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1

Membrane Technology Workshop  

Energy.gov (U.S. Department of Energy (DOE))

Presentation by Charles Page (Air Products & Chemicals, Inc.) for the Membrane Technology Workshop held July 24, 2012

2

Membrane Technology Workshop  

Energy.gov (U.S. Department of Energy (DOE))

At the Membrane Technology Workshop (held July 24, 2012, in Rosemont, IL), stakeholders from industry and academia explored the status of membrane research and development (R&D). Participants...

3

Membrane Technology Workshop  

Energy.gov (U.S. Department of Energy (DOE))

At the Membrane Technology Workshop (held July 24, 2012, in Rosemont, IL), stakeholders from industry and academia explored the status of membrane research and development (R&D). Participants ...

4

Membrane Technology Workshop Summary Report, November 2012  

Energy.gov (U.S. Department of Energy (DOE))

Final report summarizing discussions held at the Membrane Technology Workshop (July 24, 2012, Rosemont, Illinois)

5

Pollution prevention drives membrane technologies  

SciTech Connect

Currently, such membrane technologies as crossflow micro-, ultra-, and nanofiltration, reverse osmosis, electrodialysis and pervaporation offer interesting possibilities, each tackling a specific aspect of pollution control. Although none of these methods can, on its own, alter or break down pollutants, each has the ability to separate, fractionate and concentrate contaminants. In addition, they: permit continuous, uninterrupted processing via automatic control; use far less energy than traditional treatment methods; require only minimal temperature changes and no chemical additives; exert no impact on contaminants, and keep them physically separated from the stream; and are easy to install, either alone or combined with other treatment systems, since they are modular and contain few moving parts. The paper discusses the benefits and disadvantages of membrane technology and recommends thorough testing.

Cartwright, P.

1994-09-01T23:59:59.000Z

6

Stretched-membrane heliostat technology  

SciTech Connect

The stretched-membrane concept is a potentially low-cost and structurally efficient method of attaining and supporting a large, optically accurate surface for heliostat applications. In this concept, a high-strength structural film coated with a highly reflective surface is stretched uniformly on a torroidal frame. Prior and current research, directed at allowing the full potential of this novel concept to be realized, is described. Technical issues and results described include membrane attachment approaches, focusing, and the numerous structural response mechanisms specific to this concept.

Murphy, L.M.

1986-08-01T23:59:59.000Z

7

New Membrane Technology Boosts Efficiency in Industrial Gas Processes  

Office of Energy Efficiency and Renewable Energy (EERE)

Fact sheet from Membrane Technology and Research, Inc. about its pilot-scale industrial membrane system that was funded by the SBIR program.

8

Membrane technology works on North Sea platform  

SciTech Connect

The world`s first sulfate removal facility (SRF) on the Brae A production platform in the central North Sea demonstrates the effectiveness of membrane technology with only a few minor problems caused by the retrofit nature of the installation. This is the second in a three-part series that details experiences with membrane technology on the Brae A platform that future users of this membrane technology can use for optimizing their SRF installations. Formation water in the south and central Brae reservoirs contains very high levels of barium ions. Consequently, there is a high potential for forming barium sulfate scale when Brae formation water is mixed with seawater. Because of high levels of barium, conventional methods for preventing barium sulfate scale with chemical scale inhibitors proved difficult and expensive, and are of limited value for protecting the reservoir matrix. Therefore, the Brae field required a process that could selectively remove sulfate ions from seawater yet retain most other salt components. Reverse osmosis appeared to be one option, and subsequent collaboration with FilmTec identified a membrane that would only pass particles of 1 x 10{sup {minus}9} m (nanofiltration) and smaller. This membrane permitted passage of most sodium and chloride ions but let only a small percentage of sulfate ions through.

O`Donnell, K. [Marathon Oil UK Ltd., Aberdeen (United Kingdom)

1996-12-02T23:59:59.000Z

9

Thermal analysis of a nano-pore silicon-based substrate using a YAG phosphor supported COB packaged LED module  

Science Journals Connector (OSTI)

Abstract This paper presents the development of a nano-pore silicon-based (NPSB) substrate as a thermal substrate for multi-chip array light-emitting diodes (LEDs) using a YAG phosphor supported chip-on-board (COB) package structure. The proposed structure of the substrate has a nanoporous anodised aluminium oxide (AAO) layer and silicon dioxide (SiO2), that are deposited by electroplating plasma-enhanced chemical vapour deposition (PECVD) on a thermally oxidised silicon wafer, respectively. To analyse the thermal characteristics of the proposed substrate, we use an InGaN blue LED with a 5 W multi-chip array and an individual LED chip size of 900 ?m × 900 ?m × 150 ?m. The thermal performance was investigated, the junction temperature was estimated using the computational fluid dynamic (CFD) solver package, and the measurement results were validated using an infrared (IR) camera and the thermal transient tester (T3ster). Due to the effect of the cerium-activated yttrium aluminum garnet (YAG:Ce3+) yellow phosphor package on an NPSB thermal substrate, the parallel heat flow generates and induces reduction of the overall thermal resistance by as much as 0.3 K/W.

Z. Chuluunbaatar; C. Wang; E.S. Kim; N.Y. Kim

2014-01-01T23:59:59.000Z

10

Novel Membrane Technology for Green Ethylene Production - Energy...  

NLE Websites -- All DOE Office Websites (Extended Search)

Find More Like This Return to Search Novel Membrane Technology for Green Ethylene Production Argonne National Laboratory Contact ANL About This Technology

Dehydrogenation1:...

11

Fuel Cell Technologies Office: 2009 High Temperature Membrane Working Group  

NLE Websites -- All DOE Office Websites (Extended Search)

9 High Temperature 9 High Temperature Membrane Working Group Meeting Archives to someone by E-mail Share Fuel Cell Technologies Office: 2009 High Temperature Membrane Working Group Meeting Archives on Facebook Tweet about Fuel Cell Technologies Office: 2009 High Temperature Membrane Working Group Meeting Archives on Twitter Bookmark Fuel Cell Technologies Office: 2009 High Temperature Membrane Working Group Meeting Archives on Google Bookmark Fuel Cell Technologies Office: 2009 High Temperature Membrane Working Group Meeting Archives on Delicious Rank Fuel Cell Technologies Office: 2009 High Temperature Membrane Working Group Meeting Archives on Digg Find More places to share Fuel Cell Technologies Office: 2009 High Temperature Membrane Working Group Meeting Archives on AddThis.com...

12

Fuel Cell Technologies Office: 2005 High Temperature Membrane Working Group  

NLE Websites -- All DOE Office Websites (Extended Search)

About About Printable Version Share this resource Send a link to Fuel Cell Technologies Office: 2005 High Temperature Membrane Working Group Meeting Archives to someone by E-mail Share Fuel Cell Technologies Office: 2005 High Temperature Membrane Working Group Meeting Archives on Facebook Tweet about Fuel Cell Technologies Office: 2005 High Temperature Membrane Working Group Meeting Archives on Twitter Bookmark Fuel Cell Technologies Office: 2005 High Temperature Membrane Working Group Meeting Archives on Google Bookmark Fuel Cell Technologies Office: 2005 High Temperature Membrane Working Group Meeting Archives on Delicious Rank Fuel Cell Technologies Office: 2005 High Temperature Membrane Working Group Meeting Archives on Digg Find More places to share Fuel Cell Technologies Office: 2005 High

13

Fuel Cell Technologies Office: 2004 High Temperature Membrane Working Group  

NLE Websites -- All DOE Office Websites (Extended Search)

About About Printable Version Share this resource Send a link to Fuel Cell Technologies Office: 2004 High Temperature Membrane Working Group Meeting Archives to someone by E-mail Share Fuel Cell Technologies Office: 2004 High Temperature Membrane Working Group Meeting Archives on Facebook Tweet about Fuel Cell Technologies Office: 2004 High Temperature Membrane Working Group Meeting Archives on Twitter Bookmark Fuel Cell Technologies Office: 2004 High Temperature Membrane Working Group Meeting Archives on Google Bookmark Fuel Cell Technologies Office: 2004 High Temperature Membrane Working Group Meeting Archives on Delicious Rank Fuel Cell Technologies Office: 2004 High Temperature Membrane Working Group Meeting Archives on Digg Find More places to share Fuel Cell Technologies Office: 2004 High

14

Fuel Cell Technologies Office: 2010 High Temperature Membrane Working Group  

NLE Websites -- All DOE Office Websites (Extended Search)

About About Printable Version Share this resource Send a link to Fuel Cell Technologies Office: 2010 High Temperature Membrane Working Group Meeting Archives to someone by E-mail Share Fuel Cell Technologies Office: 2010 High Temperature Membrane Working Group Meeting Archives on Facebook Tweet about Fuel Cell Technologies Office: 2010 High Temperature Membrane Working Group Meeting Archives on Twitter Bookmark Fuel Cell Technologies Office: 2010 High Temperature Membrane Working Group Meeting Archives on Google Bookmark Fuel Cell Technologies Office: 2010 High Temperature Membrane Working Group Meeting Archives on Delicious Rank Fuel Cell Technologies Office: 2010 High Temperature Membrane Working Group Meeting Archives on Digg Find More places to share Fuel Cell Technologies Office: 2010 High

15

Fuel Cell Technologies Office: 2007 High Temperature Membrane Working Group  

NLE Websites -- All DOE Office Websites (Extended Search)

About About Printable Version Share this resource Send a link to Fuel Cell Technologies Office: 2007 High Temperature Membrane Working Group Meeting Archives to someone by E-mail Share Fuel Cell Technologies Office: 2007 High Temperature Membrane Working Group Meeting Archives on Facebook Tweet about Fuel Cell Technologies Office: 2007 High Temperature Membrane Working Group Meeting Archives on Twitter Bookmark Fuel Cell Technologies Office: 2007 High Temperature Membrane Working Group Meeting Archives on Google Bookmark Fuel Cell Technologies Office: 2007 High Temperature Membrane Working Group Meeting Archives on Delicious Rank Fuel Cell Technologies Office: 2007 High Temperature Membrane Working Group Meeting Archives on Digg Find More places to share Fuel Cell Technologies Office: 2007 High

16

New Membrane Technology Boosts Efficiency in Industrial Gas Processes  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Membrane Technology and Membrane Technology and Research, Inc. (MTR), based in Menlo Park, CA, is a privately- owned developer, manufacturer, and supplier of customized membrane process solutions. Currently, the company's principal membrane products are * VaporSep® systems to remove organic vapors from air and nitrogen * NitroSep TM and fuel gas conditioning systems for natural gas treatment * Hydrogen recovery systems for refinery and other applications MTR's current R&D is extending use of membranes to carbon sequestration and biofuels separations. www.mtrinc.com New Membrane Technology Boosts Efficiency in Industrial Gas Processes Challenge Membrane technology was first commercialized in the 1960s and 1970s for well-known applications such as water filtration

17

Novel membrane technology for green ethylene production.  

SciTech Connect

Ethylene is currently produced by pyrolysis of ethane in the presence of steam. This reaction requires substantial energy input, and the equilibrium conversion is thermodynamically limited. The reaction also produces significant amounts of greenhouse gases (CO and CO{sub 2}) because of the direct contact between carbon and steam. Argonne has demonstrated a new way to make ethylene via ethane dehydrogenation using a dense hydrogen transport membrane (HTM) to drive the unfavorable equilibrium conversion. Preliminary experiments show that the new approach can produce ethylene yields well above existing pyrolysis technology and also significantly above the thermodynamic equilibrium limit, while completely eliminating the production of greenhouse gases. With Argonne's approach, a disk-type dense ceramic/metal composite (cermet) membrane is used to produce ethylene by dehydrogenation of ethane at 850 C. The gas-transport membrane reactor combines a reversible chemical reaction with selective separation of one product species and leads to increased reactant conversion to the desired product. In an experiment ethane was passed over one side of the HTM membrane and air over the other side. The hydrogen produced by the dehydrogenation of ethane was removed and transported through the HTM to the air side. The air provided the driving force required for the transport of hydrogen through the HTM. The reaction between transported hydrogen and oxygen in air can provide the energy needed for the dehydrogenation reaction. At 850 C and 1-atm pressure, equilibrium conversion of ethane normally limits the ethylene yield to 64%, but Argonne has shown that an ethylene yield of 69% with a selectivity of 88% can be obtained under the same conditions. Coking was not a problem in runs extending over several weeks. Further improved HTM materials will lower the temperature required for high conversion at a reasonable residence time, while the lower temperature will suppress unwanted side reactions and prolong membrane life. With the Argonne approach, oxygen does not contact the ethane/ethylene stream, so oxidation products are not formed. Consequently, higher selectivity to ethylene and fewer by-products can be achieved. Some benefits are: (1) Simplifies overall product purification and processing schemes; (2) Results in greater energy efficiency; (3) Completely eliminates greenhouse gases from the reactor section; and (4) Lowers the cost of the 'back end' purification train, which accounts for about 70% of the capital cost of a conventional ethylene production unit.

Balachandran, U.; Lee, T. H.; Dorris, S. E.; Udovich, C. A.; Scouten, C. G.; Marshall, C. L. (Energy Systems); ( CSE)

2008-01-01T23:59:59.000Z

18

Research and development of hydrogen separation technology with inorganic membranes  

SciTech Connect

Inorganic membrane technology has long been expected to provide new economical methods for industrial and waste management processes. At this time, the only commercially valuable inorganic membranes are the ultra filters derived from the French process that was used to produce the barrier for the French Gaseous Diffusion Plants. But these membranes are very expensive and have limited areas of application. Over the past fifteen years, scientists now in the Inorganic Membrane Technology Laboratory (IMTL) in Oak Ridge, Tennessee have developed theories and processes for inorganic membranes that can be used to design and produce inorganic membranes for a very broad range of applications. A part of the fabrication process is an adaptive spinoff from the still classified process used to manufacture barriers for the U.S. Gaseous Diffusion Process. Although that part of the process is classified, it is a very flexible and adaptable process and it can be used with a broad range of materials. With the theories and design capabilities developed in the last fifteen years, this new adaptive manufacturing technology can be used to manufacture commercial inorganic membranes that are not useful for the separation of uranium isotopes and they have little or no relation to the barriers that were used to separate uranium isotopes. The development and deployment of such inorganic membranes can be very beneficial to U.S. industry. Inorganic membranes can be specifically designed and manufactured for a large number of different applications. Such membranes can greatly improve the efficiency of a broad range of industrial processes and provide new technology for waste management. These inorganic membranes have the potential for major energy savings and conservation of energy. They can provide the means for significant improvements in the competitiveness of US Industry and improve the economy and health and welfare of the nation.

Fain, D.E.

1999-07-01T23:59:59.000Z

19

Renewable Energy Powered Membrane Technology. 1. Development and Characterization of a Photovoltaic Hybrid Membrane System  

Science Journals Connector (OSTI)

Renewable Energy Powered Membrane Technology. 1. Development and Characterization of a Photovoltaic Hybrid Membrane System ... In isolated communities where potable water sources as well as energy grids are limited or nonexistent, treating brackish groundwater aquifers with small-scale desalination systems can be a viable alternative to existing water infrastructures. ...

A.I. Schäfer; A. Broeckmann; B.S. Richards

2006-12-29T23:59:59.000Z

20

Phase Transition and Interpore Correlations of Water in Nanopore Membranes Georg Menzl,1  

E-Print Network (OSTI)

to electric fields, high flow rates, and rapid proton transport [1­4]. In biological systems, pro- tein pores spanning the cell membrane are filled with single-file water and regulate proton, ion, and water trans the behavior of nano- pore water. In this Letter, we use computer simulations to investigate such cooperative

Dellago, Christoph

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Institute for Critical Technology and Applied Science Seminar Series Polymer Membranes for Energy and  

E-Print Network (OSTI)

Institute for Critical Technology and Applied Science Seminar Series Polymer Membranes for Energyst century for reliable, sustainable, efficient access to clean energy and clean water for Excellence in Industrial Gases Technology (2008), and the Strategic Environmental Research and Development

Crawford, T. Daniel

22

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

The objectives of the second year of the program are to define a material composition and composite architecture that enable the oxygen flux and stability targets to be obtained in high-pressure flux tests. Composite technology will be developed to enable the production of high-quality, defect free membranes of a thickness that allows the oxygen flux target to be obtained. The fabrication technology will be scaled up to produce three feet composite tubes with the desired leak rate. A laboratory scale, multi-tube pilot reactor will be designed and constructed to produce oxygen. In the third quarter of the second year of the program, work has focused on materials optimization, composite and manufacturing development and oxygen flux testing at high pressures. This work has led to several major achievements, summarized by the following statements: Oxygen has been produced under conditions similar to IGCC operation using composite OTM elements at a flux greater than the 2001 target. Under conditions with a greater driving force the commercial target flux has been met. Methods to significantly increase the oxygen flux without compromise to its mechanical integrity have been identified. Composite OTM elements have demonstrated stable operation at {Delta}P > 250 psi Design of the pilot plant is complete and construction will begin next quarter.

Ravi Prasad

2001-08-01T23:59:59.000Z

23

Advancing the technology base for high-temperature membranes  

SciTech Connect

This is the final report of a two-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). This project addresses the major issues confronting the implementation of high-temperature membranes for separations and catalysis. We are pursuing high-temperature membrane systems that can have a large impact for DOE and be industrially relevant. A major obstacle for increased use of membranes is that most applications require the membrane material to withstand temperatures above those acceptable for polymer-based systems. Advances made by this project have helped industry and DOE move toward high-temperature membrane applications to improve overall energy efficiency.

Dye, R.C.; Birdsell, S.A.; Snow, R.C. [and others

1997-10-01T23:59:59.000Z

24

MHK Technologies/WaveBlanket PolymerMembrane | Open Energy Information  

Open Energy Info (EERE)

WaveBlanket PolymerMembrane WaveBlanket PolymerMembrane < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage WaveBlanket PolymerMembrane.jpg Technology Profile Primary Organization Wind Waves and Sun Technology Resource Click here Wave Technology Type Click here Oscillating Wave Surge Converter Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description WaveBlanket could be called the accordion of the sea Poetically speaking It is simply a bellows played upon by the swells of the ocean WaveBlanket is a flexible polymer membrane which uses air pressure rather than steel to achieve its lateral strength and as a result produces about 1000 times more energy per unit of mass than rigid green energy designs

25

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

The objective of this program is to conduct a technology development program to advance the state-of-the-art in ceramic Oxygen Transport Membranes (OTM) to the level required to produce step change improvements in process economics, efficiency, and environmental benefits for commercial IGCC systems and other applications. The IGCC program is focused on addressing key issues in materials, processing, manufacturing, engineering and system development that will make the OTM a commercial reality. The objective of the OTM materials development task is to identify a suitable material that can be formed into a thin film to produce the target oxygen flux. This requires that the material have an adequate permeation rate, and thermo-mechanical and thermo-chemical properties such that the material is able to be supported on the desired substrate and sufficient mechanical strength to survive the stresses involved in operation. The objective of the composite OTM development task is to develop the architecture and fabrication techniques necessary to construct stable, high performance, thin film OTMs supported on suitable porous, load bearing substrates. The objective of the process development task of this program to demonstrate the program objectives on a single OTM tube under test conditions simulating those of the optimum process cycle for the power plant.

Ravi Prasad

2000-04-01T23:59:59.000Z

26

Fuel Cell Technologies Office: High Temperature Membrane Working Group  

NLE Websites -- All DOE Office Websites (Extended Search)

High Temperature Membrane Working Group High Temperature Membrane Working Group The High Temperature Membrane Working Group consists of government, industry, and university researchers interested in developing high temperature membranes for fuel cells. Description Technical Targets Meetings Contacts Description Polymer electrolyte membrane (PEM) fuel cells typically operate at temperatures no higher than 60°C-80°C due to structural limitations of the membrane. Operating PEM fuel cell stacks at higher temperatures (120°C for transportation and 150°C for stationary applications), however, would yield significant energy benefits. For example, heat rejection is easier at higher temperatures, which would allow use of smaller heat exchangers in fuel cell power systems. In addition, for reformate fuel cell systems, carbon monoxide (CO) tolerance of the stack is less problematic at higher temperatures, which would reduce the size requirements or possibly eliminate the need for some CO clean-up beds in the fuel processor.

27

Advances in ion transport membrane technology for Syngas production  

Science Journals Connector (OSTI)

Abstract Ceramic, ion transport membranes for the production of Syngas (ITM Syngas) produce high pressure synthesis gas in a single unit operation from low pressure air and pre-reformed natural gas. Oxygen transport through ITM Syngas membranes occurs through a series of processes, including solid phase oxygen anion diffusion through the dense membrane and surface reactions on the air and reducing sides of the membrane. This paper focuses on the effect of adding porous layers to the syngas side or both sides of the membrane to increase the available surface area for the surface reactions. The highest fluxes are achieved by increasing the surface area on both sides of the membrane, indicating that both surface reactions are a significant resistance to oxygen transport.

C.F. Miller; Jack Chen; M.F. Carolan; E.P. Foster

2014-01-01T23:59:59.000Z

28

Separation of heavy metals from industrial waste streams by membrane separation technology  

SciTech Connect

Industrial membrane technology is becoming increasingly attractive as a low-cost generic separation technique for volume reduction, recovery, and/or purification of the liquid phase and concentration and/or recovery of the contaminant or solute. It offers outstanding future potential in the reduction and/or recycling of hazardous pollutants from waste streams. Membrane separation technology may include: (1) commercial processes such as electrodialysis, reverse osmosis, nanofiltration, and ultrafiltration and (2) the development of hybrid processes such as liquid membranes, Donnan dialysis, and membrane bioreactor technology. Membrane separation technology as applied to waste treatment/reduction and environmental engineering problems has several advantages over conventional treatment processes. In contrast to distillation and solvent extraction membrane separation is achieved without a phase change and use of expensive solvents. The advantages of this technology are (1) low energy requirements; (2) small volumes of retentate that need to be handled; (3) selective removal of pollutants with the use of complexing agents and biocatalysts or by membrane surface modification; (4) the possibility for achieving zero discharge'' with reuse of product water, binding media and target, compounds; (5) continuous operation; (6) modular design without significant size limitations; (7) discrete membrane barrier to ensure physical separation of contaminants; and (8) minimal labor requirement.

Yichu Huang; Koseoglu, S.S. (Texas A and M Univ. System, College Station, TX (United States). Engineering Biosciences Research Center)

1993-01-01T23:59:59.000Z

29

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

The objective of this program is to conduct a technology development program to advance the state-of-the-art in ceramic Oxygen Transport Membranes (OTM) to the level required to produce step change improvements in process economics, efficiency, and environmental benefits for commercial IGCC systems and other applications. The IGCC program is focused on addressing key issues in materials, processing, manufacturing, engineering and system development that will make the OTM a commercial reality. The objective of the OTM materials development task is to identify a suitable material that can be formed into a thin film to produce the target oxygen flux. This requires that the material have an adequate permeation rate, and thermo-mechanical and thermo-chemical properties such that the material is able to be supported on the desired substrate and sufficient mechanical strength to survive the stresses involved in operation. The objective of the composite OTM development task is to develop the architecture and fabrication techniques necessary to construct stable, high performance, thin film OTMs supported on suitable porous, load bearing substrates. The objective of the process development task of this program to demonstrate the program objectives on a single OTM tube under test conditions simulating those of the optimum process cycle for the power plant. Good progress has been made towards achieving the DOE-IGCC program objectives. Two promising candidates for OTM materials have been identified and extensive characterization will continue. New compositions are being produced and tested which will determine if the material can be further improved in terms of flux, thermo-mechanical and thermo-chemical properties. Process protocols for the composite OTM development of high quality films on porous supports continues to be optimized. Dense and uniform PSO1 films were successfully applied on porous disc and tubular substrates with good bonding between the films and substrates, and no damage to the substrates or films.

Ravi Prasad

2000-04-01T23:59:59.000Z

30

Sartobind IDA 75 A Separation Technology Based on Metal Chelate Membrane Adsorbers  

E-Print Network (OSTI)

Sartobind® IDA 75 A Separation Technology Based on Metal Chelate Membrane Adsorbers Operating Instructions 85030-517-46 Storage before use Unused Sartobind Metal Chelate Membrane Adsorbers can be stored. Introduction Sartobind Metal Chelate adsorbers represent a new generation of Immobilized Metal Affinity

Lebendiker, Mario

31

Application of membrane technology to power generation waters  

SciTech Connect

Three membrane technlogies (reverse osmosis, ultrafiltration, and electrodialysis) for wastewater treatment and reuse at electric generating power plants were examined. Recirculating condenser water, ash sluice water, coal pile drainage, boiler blowdown and makeup treatment wastes, chemical cleaning wastes, wet SO/sub 2/ scrubber wastes, and miscellaneous wastes were studied. In addition, membrane separation of toxic substances in wastewater was also addressed. Waste characteristics, applicable regulations, feasible membrane processes, and cost information were analyzed for each waste stream. A users' guide to reverse osmosis was developed and is provided in an appendix.

Tang, T.L.D.; Chu, T.J.; Boroughs, R.D.

1980-03-01T23:59:59.000Z

32

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

This quarterly technical progress report will summarize work accomplished for Phase 1 Program during the quarter April to June 2002. In task 1 improvements to the membrane material have shown increased flux, stability and strength. In task 2, composite development has demonstrated the ability to cycle membranes. In task 3, scale-up issues associated with manufacturing large elements have been identified and are being addressed. The work in task 4 has demonstrated that composite OTM elements can produce oxygen at greater than 95% purity after 10 thermal and pressure cycles. In task 5 the multi-tube OTM reactor has been operated and produced oxygen.

Ravi Prasad

2002-08-01T23:59:59.000Z

33

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

This quarterly technical progress report will summarize work accomplished for Phase 1 Program during the quarter January to March 2002. In task 1 improvements to the membrane material have shown increased flux, and high temperature mechanical properties are being measured. In task 2, composite development has shown that alternative fabrication routes of the substrate can improve membrane performance under certain conditions. In task 3, scale-up issues associated with manufacturing large tubes have been identified and are being addressed. The work in task 4 has demonstrated that composite OTM elements can produce oxygen at greater than 95% purity for more than 1000 hours of the target flux under simulated IGCC operating conditions. In task 5 the multi-tube OTM reactor has been operated and produced oxygen.

Ravi Prasad

2002-05-01T23:59:59.000Z

34

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

This quarterly technical progress report will summarize work accomplished for Phase 1 Program during the quarter July to September 2002. In task 1 characterization of PSO1x has shown no decrease in strength at operating temperature. In task 2, composite development has demonstrated the ability to fabricate membranes of the new material PSO1x. In task 3, increased length elements have been fabricated. The work in task 4 testing of PSO1x has demonstrated oxygen purity of greater than 95% after more than 500 hours of testing. In task 5 the multi-element OTM reactor has been operated and produced oxygen at greater than target purity and flux.

Ravi Prasad

2002-11-01T23:59:59.000Z

35

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

This quarterly technical progress report will summarize work accomplished for Phase 1 Program during the quarter October to December 2001. In task 1 optimization of the substrate material has yielded substantial improvements to membrane life. In task 2, composite development has enabled 50% of the target flux under Type 1B process conditions. In task 3, manufacturing development has demonstrated that 36 inch long tubes can be produced. The work in task 4 has demonstrated that composite OTM elements can produce oxygen at greater than 95% purity for more than 500 hours of the target flux. In task 5 construction of the multi-tube OTM reactor is completed and initial startup testing was carried out.

Ravi Prasad

2002-02-01T23:59:59.000Z

36

Wool scouring waste treatment by a combination of coagulation–flocculation process and membrane separation technology  

Science Journals Connector (OSTI)

Wool scouring produces a highly polluting effluent. This study discusses a process based on a combination of coagulation–flocculation process followed by a membrane separation technology to improve the removal efficiency. The optimum operating conditions for the coagulation–flocculation process were pH 4 and 500 mg/L in ferric chloride. Under these conditions, the settled liquor was treated with ceramic and polymeric membranes of various molecular weight cut-offs (MWCO). Rejection of total organic carbon (TOC) reached a maximum value of 86% for a 0.3 kDa MWCO polymeric membrane. Membrane fouling was more significant in the ceramic membranes than the polymeric ones. High quality permeate effluent was obtained by operating in a batch retentate-recycling mode for a 0.3 kDa MWCO membrane. A mathematical model permits estimates of TOC concentrations in the retentate and permeate obtainable by working in the batch retentate-recycling mode with different MWCO membranes.

Jordi Labanda; Joan Llorens

2008-01-01T23:59:59.000Z

37

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

The objectives of the first year of phase 2 of the program are to construct and operate an engineering pilot reactor for OTM oxygen. Work to support this objective is being undertaken in the following areas in this quarter: Element reliability; Element fabrication; Systems technology; Power recovery; and IGCC process analysis and economics. The major accomplishments this quarter were Preferred OTM architectures have been identified through stress analysis; and The 01 reactor was operated at target flux and target purity for 1000 hours.

Ravi Prasad

2003-04-30T23:59:59.000Z

38

SingleSep Disposable Capsules A Separation Technology Based on Microporous Membranes  

E-Print Network (OSTI)

Sartobind SingleSep Disposable Capsules A Separation Technology Based on Microporous Membranes into a conventional housing for easy and quick handling, making ion exchange purification nearly as easy as filtration procedures. For upscaling to production and downstream pro- cessing, Sartorius offers Sartobind Multi

Lebendiker, Mario

39

Ceramic Membrane Enabling Technology for Improved IGCC Efficiency  

SciTech Connect

This final report summarizes work accomplished in the program from October 1, 1999 through December 31,2004. While many of the key technical objectives for this program were achieved, after a thorough economic and OTM (Oxygen Transport Membrane) reliability analysis were completed, a decision was made to terminate the project prior to construction of a second pilot reactor. In the program, oxygen with purity greater than 99% was produced in both single tube tests and multi-tube pilot plant tests for over 1000 hours. This demonstrated the technical viability of using ceramic OTM devices for producing oxygen from a high pressure air stream. The oxygen fluxes that were achieved in single tube tests exceeded the original target flux for commercial operation. However, extended testing showed that the mean time to failure of the ceramics was insufficient to enable a commercially viable system. In addition, manufacturing and material strength constraints led to size limitations of the OTM tubes that could be tested. This has a severe impact on the cost of both the ceramic devices, but also the cost of assembling the OTM tubes in a large reactor. As such and combined with significant progress in cost reduction of large cryogenic oxygen separation devices, an economic gain that justifies continued development could not be derived.

John Sirman; Bart vanHassel

2005-06-01T23:59:59.000Z

40

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

This quarterly technical progress report will summarize work accomplished for Phase 2 Program during the quarter April to June 2004. In task 7, reactor cost analysis was performed to determine whether OTM technology when integrated with IGCC provides a commercially attractive process. In task 9, discussions with DOE regarding restructuring the program continued. The objectives of the second year of phase 2 of the program are to construct and operate an engineering pilot reactor for OTM oxygen. Work to support this objective is being undertaken in the following areas in this quarter: IGCC process analysis and economics.

John Sirman

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

This yearly technical progress report will summarize work accomplished for Phase 1 Program during the program year 2000/2001. In task 1, the lead material composition was modified to enable superior fluxes and its mechanical properties improved. In task 2, composite OTM elements were fabricated that enable oxygen production at the commercial target purity and 75% of the target flux. In task 3, manufacturing development demonstrated the technology to fabricate an OTM tube of the size required for the multi-tube tester. The work in task 4 has enabled a preferred composite architecture and process conditions to be predicted. In task 5, the multi-tube reactor is designed and fabrication almost complete.

Ravi Prasad

2001-10-01T23:59:59.000Z

42

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

This quarterly technical progress report will summarize work accomplished for Phase 2 Program during the quarter July to September 2003. In task 1 OTM development has led to improved strength and composite design. In task 2, the manufacture of robust PSO1d elements has been scaled up. In task 3, operational improvements in the lab-scale pilot reactor have reduced turn-around time and increased product purity. In task 7, economic models show substantial benefit of OTM IGCC over CRYO based oxygen production. The objectives of the first year of phase 2 of the program are to construct and operate an engineering pilot reactor for OTM oxygen. Work to support this objective is being undertaken in the following areas in this quarter: Element reliability; Element fabrication; Systems technology; Power recovery; and IGCC process analysis and economics. The major accomplishments this quarter were Element production at Praxair's manufacturing facility is being scaled up and Substantial improvements to the OTM high temperature strength have been made.

Ravi Prasad

2003-11-01T23:59:59.000Z

43

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

The objectives of the first year of phase 2 of the program are to construct and operate an engineering pilot reactor for OTM oxygen. Work to support this objective is being undertaken in the following areas in this quarter: Element reliability; Element fabrication; Systems technology; Power recovery; and IGCC process analysis and economics. The major accomplishments this quarter were: (1) Methods to improve the strength and stability of PSO1x were identified. (2) The O1 reactor was operated at target flux and target purity for 1000 hours. This quarterly technical progress report will summarize work accomplished for Phase 2 Program during the quarter October to December 2002. In task 1 improvements to PSO1x have shown increased performance in strength and stability. In task 2, PSO1d and PSO1x elements have been fabricated for testing in the pilot reactor. In task 3, the lab-scale pilot reactor has been operated for 1000 hours. In task 6 initial power recovery simulation has begun. In task 7, HYSIS models have been developed to optimize the process for a future demonstration unit.

Ravi Prasad

2003-03-01T23:59:59.000Z

44

Control Technology - Multi-Pollutant Control Using Membrane-Based Up-Flow  

NLE Websites -- All DOE Office Websites (Extended Search)

Control Control Control Technologies - Multi-Pollutant Control Using Membrane-Based Up-Flow Wet Precipitation Up-Flow Wet Precipitation The primary objective of this work is to compare the performance of metallic collecting surfaces to the performance of membrane collecting surfaces in a wet electrostatic precipitator (ESP), in terms of their efficiency in removing fine particulates, acid aerosols, and mercury from an actual power plant flue gas stream. The relative durability and overall cost-effectiveness of the membrane collectors versus metallic collectors will also be evaluated. Due to the higher specific powers, superior corrosion resistance, and better wetting and cleaning qualities, the membrane-collecting surface is expected to perform better than the metallic surface. The second objective of the project will be to compare the overall fine particulate, acid aerosol, and mercury removal efficiency of the baseline flue gas treatment system on BMP Units 1 and 2 to the efficiencies obtained when the two wet ESP systems (metallic and membrane collectors) are added to the existing treatment system.

45

Reducing the cost of CO{sub 2} capture from flue gases using membrane technology  

SciTech Connect

Studies of CO{sub 2} capture using membrane technology from coal-fired power-plant flue gas typically assume compression of the feed to achieve a driving force across the membrane. The high CO{sub 2} capture cost of these systems reflects the need to compress the low-pressure feed gas (1 bar) and the low CO{sub 2} purity of the product stream. This article investigates how costs for CO{sub 2} capture using membranes can be reduced by operating under vacuum conditions. The flue gas is pressurized to 1.5 bar, whereas the permeate stream is at 0.08 bar. Under these operating conditions, the capture cost is U.S. $54/tonne CO{sub 2} avoided compared to U.S. $82/tonne CO{sub 2} avoided using membrane processes with a pressurized feed. This is a. reduction of 35%. The article also investigates the effect on the capture cost of improvements in CO{sub 2} permeability and selectivity. The results show that the capture cost can be reduced to less than U.S. $25/tonne CO{sub 2} avoided when the CO{sub 2} permeability is 300 bar, CO{sub 2}/N{sub 2} selectivity is 250, and the membrane cost is U.S. $10/m{sup 2}.

Ho, M.T.; Allinson, G.W.; Wiley, D.E. [University of New South Wales, Kensington, NSW (Australia)

2008-03-15T23:59:59.000Z

46

Advanced Membrane Separation Technologies for Energy Recovery from Industrial Process Streams  

SciTech Connect

Recovery of energy from relatively low-temperature waste streams is a goal that has not been achieved on any large scale. Heat exchangers do not operate efficiently with low-temperature streams and thus require such large heat exchanger surface areas that they are not practical. Condensing economizers offer one option for heat recovery from such streams, but they have not been widely implemented by industry. A promising alternative to these heat exchangers and economizers is a prototype ceramic membrane system using transport membrane technology for separation of water vapor and recovery of heat. This system was successfully tested by the Gas Technology Institute (GTI) on a natural gas fired boiler where the flue gas is relatively clean and free of contaminants. However, since the tubes of the prototype system were constructed of aluminum oxide, the brittle nature of the tubes limited the robustness of the system and even limited the length of tubes that could be used. In order to improve the robustness of the membrane tubes and make the system more suitable for industrial applications, this project was initiated with the objective of developing a system with materials that would permit the system to function successfully on a larger scale and in contaminated and potentially corrosive industrial environments. This required identifying likely industrial environments and the hazards associated with those environments. Based on the hazardous components in these environments, candidate metallic materials were identified that are expected to have sufficient strength, thermal conductivity and corrosion resistance to permit production of longer tubes that could function in the industrial environments identified. Tests were conducted to determine the corrosion resistance of these candidate alloys, and the feasibility of forming these materials into porous substrates was assessed. Once the most promising metallic materials were identified, the ability to form an alumina membrane layer on the surface of the metallic tubes was evaluated. Evaluation of this new style of membrane tube involved exposure to SO{sub 2} containing gases as well as to materials with a potential for fouling. Once the choice of substrate and membrane materials and design were confirmed, about 150 tubes were fabricated and assembled into three modules. These modules were mounted on an industrial size boiler and their performance carefully monitored during a limited testing period. The positive results of this performance test confirm the feasibility of utilizing such a system for recovery of heat and water from industrial waste streams. The improved module design along with use of long metallic substrate tubes with a ceramic membrane on the outer surface resulted in the successful, limited scale demonstration of the Transport Membrane Condenser (TMC) technology in the GTI test facility. This test showed this technology can successfully recover a significant amount of heat and water from gaseous waste streams. However, before industry will make the investment to install a full scale TMC, a full scale system will need to be constructed, installed and successfully operated at a few industrial sites. Companies were identified that had an interest in serving as a host site for a demonstration system.

Keiser, J.R.; Wang, D. (Gas Technology Institute); Bischoff, B.; Ciora (Media and Process Technology); Radhakrishnan, B.; Gorti, S.B.

2013-01-14T23:59:59.000Z

47

Renewable energy powered membrane technology. 2. The effect of energy fluctuations on performance of a photovoltaic hybrid membrane system   

E-Print Network (OSTI)

This paper reports on the performance fluctuations during the operation of a batteryless hybrid ultrafiltration – nanofiltration / reverse osmosis (UF-NF/RO) membrane desalination system powered by photovoltaics treating ...

Richards, B.S.; Capão, D.P.S.; Schäfer, Andrea

2008-01-01T23:59:59.000Z

48

ESS 2012 Peer Review - Low-Cost, High-Performance Hybrid Membranes for Redox Flow Batteries - Hongxing Hu, Amsen Technologies  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DESIGN © 2008 DESIGN © 2008 www.PosterPresentations.com Low-Cost, High-Performance Hybrid Membranes for Redox Flow Batteries Hongxing Hu, Amsen Technologies LLC DOE SBIR Project, Program Manager at DOE: Dr. Imre Gyuk Objectives and Technical Approach Objectives: This SBIR project aims to develop low-cost, high performance hybrid polymeric PEMs for redox flow batteries (RFBs). Such membranes shall have high chemical stability in RFB electrolytes, high proton conductivity, low permeability of vanadium ions, along with high dimensional stability, high mechanical strength and durability, and lower cost than Nafion membranes. Approach: * Hybrid membranes of sulfonated polymers * Balance between different types of polymers for proton conductivity and chemical stability

49

Cost-effectiveness analysis of the SEAMIST{trademark} membrane system technology  

SciTech Connect

SEAMIST{trademark} is a new technology that consists of an airtight membrane liner that is pneumatically emplaced inside the borehole. The positive air pressure inside the liner maintains the integrity of the borehole structure. Sampling ports with attached tubing, absorbent collectors, or various in situ measuring devices can be fabricated into the liner and used for monitoring volatile organic compounds (VOCs), semivolatile organic compounds (SVOCs), pesticides, herbicides, polynuclear aromatic hydrocarbons, polychlorinated biphenyls, or radioactive substances. In addition, small instruments can be guided through the lined borehole and measurements taken inside at specified intervals. The purpose of this study is to analyze the cost and performance effectiveness of this new technology. To do so, the authors constructed five hypothetical scenarios in which utilization of the SEAMIST{trademark} system can address various needs of the Department of Energy`s environmental remediation program. Two of the scenarios involve vertical boreholes (or vertical instrument configurations) and two involve horizontal boreholes (or horizontal instrument configurations). The four scenarios jointly address contamination by VOCS, SVOCS, various water-soluble toxic substances, and low-level radioactive waste. One of the scenarios involves towing an instrument through a borehole and taking measurements of moisture levels in the surrounding soil.

Henriksen, A.D.; Booth, S.R.

1995-03-01T23:59:59.000Z

50

ESS 2012 Peer Review - Redox Flow Battery (RFB) with Low-cost Electrolyte and Membrane Technologies - Thomas Kodenkandath, ITN Energy Systems  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Innovative, high energy density Mn-V based RFB electrolytes as a Innovative, high energy density Mn-V based RFB electrolytes as a low-cost alternate to all-Vanadium systems * Low-cost membrane technology, based on renewable biopolymer Chitosan with improved proton conduction & chemical stability, adaptable to Mn-V system * Scale-up of electrolyte and membrane technologies in pursuit of ARPA-E's goal for a 2.5kW/10kWh RFB stack with integrated BoS at a total cost of ~$1000/unit and ~1.2 m 3 footprint ITN Energy Systems, Inc., Littleton, CO 2.5kW/10kWh Redox Flow Battery (RFB) with Low-cost Electrolyte and Membrane Technologies $2.1 M, 33-month program awarded by ARPA-E Sept 7, 2012 Dr. Thomas Kodenkandath High-Performance, Low-cost RFB through Electrolyte & Membrane Innovations Technology Summary

51

Final Report - Energy Reduction and Advanced Water Removal via Membrane Solvent Extraction Technology  

SciTech Connect

3M and Archer Daniels Midland (ADM) collaborated with the U.S. Department of Energy (DOE) to develop and demonstrate a novel membrane solvent extraction (MSE) process that can substantially reduce energy and water consumption in ethanol production, and accelerate the fermentation process. A cross-flow membrane module was developed, using porous membrane manufactured by 3M. A pilot process was developed that integrates fermentation, MSE and vacuum distillation. Extended experiments of 48-72 hours each were conducted to develop the process, verify its performance and begin establishing commercial viability.

Reed, John; Fanselow, Dan; Abbas, Charles; Sammons, Rhea; Kinchin, Christopher

2014-08-06T23:59:59.000Z

52

Creation Of New Composite Materials For Hydrogen Energy Purposes. I. New Lines Of Membrane Production Technology  

Science Journals Connector (OSTI)

One of the main problems of hydrogen energy is separation and purification of hydrogen produced by various conversion methods from raw hydrocarbons. Carbon membranes can become ... and polymeric ones and enlarge ...

O. K. Alexeeva; M. M. Chelyak; A. A. Kotenko…

2008-01-01T23:59:59.000Z

53

Low cost hydrogen/novel membrane technology for hydrogen separation from synthesis gas  

SciTech Connect

To make the coal-to-hydrogen route economically attractive, improvements are being sought in each step of the process: coal gasification, water-carbon monoxide shift reaction, and hydrogen separation. This report addresses the use of membranes in the hydrogen separation step. The separation of hydrogen from synthesis gas is a major cost element in the manufacture of hydrogen from coal. Separation by membranes is an attractive, new, and still largely unexplored approach to the problem. Membrane processes are inherently simple and efficient and often have lower capital and operating costs than conventional processes. In this report current ad future trends in hydrogen production and use are first summarized. Methods of producing hydrogen from coal are then discussed, with particular emphasis on the Texaco entrained flow gasifier and on current methods of separating hydrogen from this gas stream. The potential for membrane separations in the process is then examined. In particular, the use of membranes for H{sub 2}/CO{sub 2}, H{sub 2}/CO, and H{sub 2}/N{sub 2} separations is discussed. 43 refs., 14 figs., 6 tabs.

Not Available

1986-02-01T23:59:59.000Z

54

Investigation of dynamic driving cycle effect on the degradation of proton exchange membrane fuel cell by segmented cell technology  

Science Journals Connector (OSTI)

Abstract Durability is one of the most important limiting factors for the commercialization of proton exchange membrane fuel cell (PEMFC). Fuel cells are more vulnerable to degradation under operating conditions as dynamic load cycle or start up/shut down. The purpose of this study is to evaluate influences of driving cycles on the durability of fuel cells through analyzing the degradation mechanism of a segmented cell in real time. This study demonstrates that the performance of the fuel cell significantly decreases after 200 cycles. The segmented cell technology is used to measure the local current density distribution, which shows that the current density at the exit region and the inlet region declines much faster than the other parts. Meanwhile, electro-chemical impedance spectroscopy (EIS) reveals that after 200 cycles the ohmic resistance of fuel cell increases, especially at the cathode, and electro-chemical surface area (ESA) decreases from 392 to 307 cm2 mg?1. Furthermore, scanning electron microscopy (SEM) images of the membrane–electrode assembly (MEA) in cross-section demonstrate crackle flaw on the surface of the catalyst layer and the delamination of the electrodes from the membrane. Transmission electron microscope (TEM) results also show that the Pt particle size increases distinctly after driving cycles.

R. Lin; F. Xiong; W.C. Tang; L. Técher; J.M. Zhang; J.X. Ma

2014-01-01T23:59:59.000Z

55

Technical and economic feasibility of membrane technology. Fourth technical progress report, June 17-September 16, 1980  

SciTech Connect

Progress is reported on the investigation of the potential application of reverse osmosis, ultrafiltration and electrodialysis to the system of solids concentration in beet sugar process streams. During this period, emphasis was put on running reverse osmosis tests with a new prototype machine to select the most suitable membranes for the concentrating of sugar solutions. An economic analysis of using reverse osmosis in a factory producing 10/sup 6/ gal/day of thin juice is discussed. (DMC)

Sandre, A.

1980-10-01T23:59:59.000Z

56

Nano-pore based characterization of branched polymers  

E-Print Network (OSTI)

We propose a novel characterization method of randomly branched polymers based on the geometrical property of such objects in confined spaces. The central idea is that randomly branched polymers exhibit passing/clogging transition across the nano-channel as a function of the channel size. This critical channel size depends on the degree of the branching, whereby allowing the extraction of the branching information of the molecule.

Takahiro Sakaue; Françoise Brochard-Wyart

2014-01-31T23:59:59.000Z

57

New Membrane Technology for Post-Combustion Carbon Capture Begins Pilot-Scale Test  

Energy.gov (U.S. Department of Energy (DOE))

A promising new technology sponsored by the U.S. Department of Energy (DOE) for economically capturing 90 percent of the carbon dioxide (CO2) emitted from a coal-burning power plant has begun pilot-scale testing.

58

Desalting and water treatment membrane manual: A guide to membranes for municipal water treatment. Water treatment technology program report No. 1  

SciTech Connect

The Bureau of Reclamation prepared this manual to provide an overview of microfiltration, ultrafiltration, nanofiltration, reverse osmosis, and electrodialysis processes as they are used for water treatment. Membrane composition, the chemical processes, and the physical processes involved with each membrane type are described and compared. Because care and maintenance of water treatment membranes are vital to their performance and life expectancy, pretreatment, cleaning, and storage requirements are discussed in some detail. Options for concentrate disposal, also a problematic feature of membrane processes, are discussed. The culmination of this wealth of knowledge is an extensive comparison of water treatment membranes commercially available at this time. The tables cover physical characteristics, performance data, and operational tolerances.

Chapman-Wilbert, M.

1993-09-01T23:59:59.000Z

59

Membrane magic  

SciTech Connect

The Kansas Power and Light Co.'s La Cyne generating station has found success with membrane filtration water pretreatment technology. The article recounts the process followed in late 2004 to install a Pall Aria 4 microfilter in Unit 1 makeup water system at the plant to produce cleaner water for reverse osmosis feed. 2 figs., 2 photos.

Buecker, B. [Kansas City Power and Light Co. (United States)

2005-09-01T23:59:59.000Z

60

Theoretical and experimental investigation of membrane distillation.  

E-Print Network (OSTI)

??Invented in the 1960s, membrane distillation is an emerging technology for water treatment attracting more attention since 1980s. There are four configurations of membrane distillations… (more)

Zhang, Jianhua

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

ADVANCED MATERIALS Membranes for Clean Water  

E-Print Network (OSTI)

and security. Polymer-based membrane separation technologies based on reverse osmosis, forward osmosis active layer used in reverse osmosis membranes, interfacial polymerization of trimesoyl chloride (TMC

62

Evaluation of Membrane Treatment Technology to Optimize and Reduce Hypersalinity Content of Produced Brine for Reuse in Unconventional Gas Wells  

E-Print Network (OSTI)

scale were performed using pretreatment, microfiltration and nanofiltration processes. Membrane performance was selected based on high flux separation efficiency, high tolerance for solids and fluid treatments. Over 95 % solids rejection and greater...

Eboagwu, Uche

2012-10-19T23:59:59.000Z

63

Low cost hydrogen/novel membrane technology for hydrogen separation from synthesis gas. Task 1, Literature survey  

SciTech Connect

To make the coal-to-hydrogen route economically attractive, improvements are being sought in each step of the process: coal gasification, water-carbon monoxide shift reaction, and hydrogen separation. This report addresses the use of membranes in the hydrogen separation step. The separation of hydrogen from synthesis gas is a major cost element in the manufacture of hydrogen from coal. Separation by membranes is an attractive, new, and still largely unexplored approach to the problem. Membrane processes are inherently simple and efficient and often have lower capital and operating costs than conventional processes. In this report current ad future trends in hydrogen production and use are first summarized. Methods of producing hydrogen from coal are then discussed, with particular emphasis on the Texaco entrained flow gasifier and on current methods of separating hydrogen from this gas stream. The potential for membrane separations in the process is then examined. In particular, the use of membranes for H{sub 2}/CO{sub 2}, H{sub 2}/CO, and H{sub 2}/N{sub 2} separations is discussed. 43 refs., 14 figs., 6 tabs.

Not Available

1986-02-01T23:59:59.000Z

64

Economical Large Scale Advanced Membrane and Sorbent Strategies  

Energy.gov (U.S. Department of Energy (DOE))

Presentation by William Koros (Georgia Institute of Technology) for the Membrane Technology Workshop held July 24, 2012

65

Challenges in Bio-Inspired Membranes  

Energy.gov (U.S. Department of Energy (DOE))

Presentation by Jun Lin (Pacific Northwest National Laboratory, PNNL) for the Membrane Technology Workshop held July 24, 2012

66

Review of Historical Membrane Workshop Results  

Energy.gov (U.S. Department of Energy (DOE))

Presentation by Sharon Robinson (Oak Ridge National Laboratory) for the Membrane Technology Workshop held July 24, 2012

67

Engineering Development of Ceramic Membrane Reactor  

E-Print Network (OSTI)

ceramic Ion Transport Membrane (ITM) reactor system for low-cost conversion of natural gas to hydrogen;7 A Revolutionary Technology Using Ceramic Membranes Ion Transport Membranes (ITM) ­ Non-porous multiEngineering Development of Ceramic Membrane Reactor Systems for Converting Natural Gas to Hydrogen

68

CENTRIFUGAL MEMBRANE FILTRATION  

SciTech Connect

The overall project consists of several integrated research phases related to the applicability, continued development, demonstration, and commercialization of the SpinTek centrifugal membrane filtration process. Work performed during this reporting period consisted of Phase 2 evaluation of the SpinTek centrifugal membrane filtration technology and Phase 3, Technology Partnering. During Phase 1 testing conducted at the EERC using the SpinTek ST-IIL unit operating on a surrogate tank waste, a solids cake developed on the membrane surface. The solids cake was observed where linear membrane velocities were less than 17.5 ft/s and reduced the unobstructed membrane surface area up to 25%, reducing overall filtration performance. The primary goal of the Phase 2 research effort was to enhance filtration performance through the development and testing of alternative turbulence promoter designs. The turbulence promoters were designed to generate a shear force across the entire membrane surface sufficient to maintain a self-cleaning membrane capability and improve filtration efficiency and long-term performance. Specific Phase 2 research activities included the following: System modifications to accommodate an 11-in.-diameter, two-disk rotating membrane assembly; Development and fabrication of alternative turbulence promoter designs; Testing and evaluation of the existing and alternative turbulence promoters under selected operating conditions using a statistically designed test matrix; and Data reduction and analysis; The objective of Phase 3 research was to demonstrate the effectiveness of SpinTek's centrifugal membrane filtration as a pretreatment to remove suspended solids from a liquid waste upstream of 3M's WWL cartridge technology for the selective removal of technetium (Tc).

Daniel J. Stepan; Bradley G. Stevens; Melanie D. Hetland

1999-10-01T23:59:59.000Z

69

membrane-process2 | netl.doe.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Membrane Process to Capture CO2 from Power Plant Flue Gas Project No.: DE-NT0005312 MTR membrane test skid. (click on image to enlarge) Membrane Technology and Research (MTR) Inc....

70

Hybrid Membranes for Light Gas Separations  

E-Print Network (OSTI)

Membrane separations provide a potentially attractive technology over conventional processes due to their advantages, such as low capital cost and energy consumption. The goal of this thesis is to design hybrid membranes that facilitate specific gas...

Liu, Ting

2012-07-16T23:59:59.000Z

71

Energy Conservation Possibilities Using Gas Separating Membranes  

E-Print Network (OSTI)

The separation of gases using semi permeable membranes is a viable unit operation. A novel composite membrane combined with hollow fiber spinning technology enable Monsanto Co. to offer PRISM (TM); Separators to the industrial market. The separator...

Knieriem, H.; Henis, J. M. S.

1980-01-01T23:59:59.000Z

72

Technolog  

NLE Websites -- All DOE Office Websites (Extended Search)

Research in Research in Science and Technolog y Sandia pushes frontiers of knowledge to meet the nation's needs, today and tomorrow Sandia National Laboratories' fundamental science and technology research leads to greater understanding of how and why things work and is intrinsic to technological advances. Basic research that challenges scientific assumptions enables the nation to push scientific boundaries. Innovations and breakthroughs produced at Sandia allow it to tackle critical issues, from maintaining the safety, security and effectiveness of the nation's nuclear weapons and preventing domestic and interna- tional terrorism to finding innovative clean energy solutions, develop- ing cutting-edge nanotechnology and moving the latest advances to the marketplace. Sandia's expertise includes:

73

Use of Membranes in Non-Traditional Applications and Emerging Markets  

Energy.gov (U.S. Department of Energy (DOE))

Presentation by Zissis Dardas (United Technologies Research Center, UTRC) for the Membrane Technology Workshop held July 24, 2012

74

An Industrial Wish List for Membrane-Based Separations  

Energy.gov (U.S. Department of Energy (DOE))

Presentation by Shawn Feist (The Dow Chemical Company) for the Membrane Technology Workshop held July 24, 2012

75

Efficacy of rhBMP-2 loaded PCL/PLGA/?-TCP guided bone regeneration membrane fabricated by 3D printing technology for reconstruction of calvaria defects in rabbit  

Science Journals Connector (OSTI)

We successfully fabricated a three-dimensional (3D) printing-based PCL/PLGA/?-TCP guided bone regeneration (GBR) membrane that slowly released rhBMP-2. To impregnate the GBR membrane with intact rhBMP-2, collagen solution encapsulating rhBMP-2 (5?µg?ml?1) was infused into pores of a PCL/PLGA/?-TCP membrane constructed using a 3D printing system with four dispensing heads. In a release profile test, sustained release of rhBMP-2 was observed for up to 28?d. To investigate the efficacy of the GBR membrane on bone regeneration, PCL/PLGA/?-TCP membranes with or without rhBMP-2 were implanted in an 8?mm calvaria defect of rabbits. Bone formation was evaluated at weeks 4 and 8 histologically and histomorphometrically. A space making ability of the GBR membrane was successfully maintained in both groups, and significantly more new bone was formed at post-implantation weeks 4 and 8 by rhBMP-2 loaded GBR membranes. Interestingly, implantation with rhBMP-2 loaded GBR membranes led to almost entire healing of calvaria defects within 8?weeks.

Jin-Hyung Shim; Min-Chul Yoon; Chang-Mo Jeong; Jinah Jang; Sung-In Jeong; Dong-Woo Cho; Jung-Bo Huh

2014-01-01T23:59:59.000Z

76

Technology transfer | Argonne National Laboratory  

NLE Websites -- All DOE Office Websites (Extended Search)

Technology transfer Technology transfer Technology available for licensing: CURLSNovember 21, 2013 Containment Unidirectional Resource Loading System expands flexibility of glove boxes and other containment systems. Read more about Technology available for licensing: CURLS Rhodobacter System for the Expression of Membrane Proteins Using photosynthetic bacteria (Rhodobacter) for the expression of heterologous membrane proteins Read more about Rhodobacter System for the Expression of Membrane Proteins Synthesizing Membrane Proteins Using In Vitro Methodology This in vitro, cell-free expression system caters to the production of protein types that are challenging to study: membrane proteins, membrane-associated proteins, and soluble proteins that require complex redox cofactors.

77

Durable, Low Cost, Improved Fuel Cell Membranes  

NLE Websites -- All DOE Office Websites (Extended Search)

Durable, Low-cost, Improved Durable, Low-cost, Improved Fuel Cell Membranes US Department of Energy Office of Hydrogen, Fuel Cells and Infrastructure Technologies Kickoff Meeting, Washington DC, February 13, 2007 Michel Fouré Project Objectives z To develop a low cost (vs. perfluorosulfonated ionomers), durable membrane. z To develop a membrane capable at 80°C at low relative humidity (25-50%). z To develop a membrane capable of operating at 120°C for brief periods of time. z To elucidate membrane degradation and failure mechanisms. U:jen/slides/pres.07/FC kickoff Washington DC 2-13-07 2 Technical Barriers Addressed z Membrane Cost z Membrane Durability z Membrane capability to operate at low relative humidity. z Membrane capability to operate at 120ºC for brief period of times.

78

Scaling exponents of Forced Polymer Translocation through a nano-pore  

E-Print Network (OSTI)

We investigate several scaling properties of a translocating homopolymer through a thin pore driven by an external field present inside the pore only using Langevin Dynamics (LD) simulation in three dimension (3D). Specifically motivated by several recent theoretical and numerical studies that are apparently at odds with each other, we determine the chain length dependence of the scaling exponents of the average translocation time, the average velocity of the center of mass, $$, the effective radius of gyration during the translocation process, and the scaling exponent of the translocation coordinate ($s$-coordinate) as a function of the translocation time. We further discuss the possibility that in the case of driven translocation the finite pore size and its geometry could be responsible that the veclocity scaling exponent is less than unity and discuss the dependence of the scaling exponents on the pore geometry for the range of $N$ studied here.

Aniket Bhattacharya; William H. Morrison; Kaifu Luo; Tapio Ala-Nissila; See-Chen Ying; Andrey Milchev; Kurt Binder

2008-11-10T23:59:59.000Z

79

Microporous Inorganic Membranes for Hydrogen Purification  

NLE Websites -- All DOE Office Websites (Extended Search)

Microporous Microporous Inorganic Membranes for Hydrogen Purification Brian L. Bischoff, Roddie R. Judkins, and Timothy R. Armstrong Oak Ridge National Laboratory Presented at: DOE Workshop on Hydrogen Separations and Purification Technologies Arlington, Virginia September 8, 2004 2 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY Hydrogen Separation Membranes * Non-Porous - Palladium based films - Ion transport membranes * Porous - Ordered microporous membranes (IUPAC Recommendations 2001), e.g. zeolite membranes - Microporous membranes 3 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY Microporous Membranes * IUPAC defines micropores as pores smaller than 2nm in diameter * Generally a microporous membrane is made by applying 1 to 3 thin layers to a porous support * Porous support can be ceramic or metallic

80

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect

Conversion of natural gas to liquid fuels and chemicals is a major goal for the Nation as it enters the 21st Century. Technically robust and economically viable processes are needed to capture the value of the vast reserves of natural gas on Alaska's North Slope, and wean the Nation from dependence on foreign petroleum sources. Technologies that are emerging to fulfill this need are all based syngas as an intermediate. Syngas (a mixture of hydrogen and carbon monoxide) is a fundamental building block from which chemicals and fuels can be derived. Lower cost syngas translates directly into more cost-competitive fuels and chemicals. The currently practiced commercial technology for making syngas is either steam methane reforming (SMR) or a two-step process involving cryogenic oxygen separation followed by natural gas partial oxidation (POX). These high-energy, capital-intensive processes do not always produce syngas at a cost that makes its derivatives competitive with current petroleum-based fuels and chemicals. This project has the following 6 main tasks: Task 1--Design, fabricate and evaluate ceramic to metal seals based on graded ceramic powder/metal braze joints. Task 2--Evaluate the effect of defect configuration on ceramic membrane conductivity and long term chemical and structural stability. Task 3--Determine materials mechanical properties under conditions of high temperatures and reactive atmospheres. Task 4--Evaluate phase stability and thermal expansion of candidate perovskite membranes and develop techniques to support these materials on porous metal structures. Task 5--Assess the microstructure of membrane materials to evaluate the effects of vacancy-impurity association, defect clusters, and vacancy-dopant association on the membrane performance and stability. Task 6--Measure kinetics of oxygen uptake and transport in ceramic membrane materials under commercially relevant conditions using isotope labeling techniques.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2001-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Membranes solve North Sea waterflood sulfate problems  

SciTech Connect

To prevent barium sulfate scale from forming in the North Sea Brae field producing wells, Marathon Oil Co. UK Ltd. is successfully employing thin-film composite (nanofiltration) membranes for removing sulfate from injected seawater. In the early 1980s, FilmTec Corp., a Dow Chemical Co. subsidiary, first developed these composite membranes, which now are in their third generation. Marathon Oil Co. holds the patent for the specific nanofiltration membrane process for mitigating scale formation and deleterious reservoir effects. This first article in a three-part series describes membrane technology. The remaining articles detail specific membrane performance characteristics and field experiences in the Brae fields.

Davis, R. [Dow Chemical Co., Midland, MI (United States); Lomax, I. [Dow Chemical Co., Dubai (United Arab Emirates); Plummer, M. [Marathon Oil Co., Littleton, CO (United States)

1996-11-25T23:59:59.000Z

82

Flame aerosol nano-technology has been developed to preparation of thin and defect-free porous membrane from the gas phase as a one step method in preparation of membrane for gas  

E-Print Network (OSTI)

Abstract Flame aerosol nano-technology has been developed to preparation of thin and defect on deposition of nano particles (-Al2O3, MgO or spinel MgAl2O4), formed in the premixed flame reactor through/or aluminium precursors in the flame to form nano-particles of -Al2O3, MgO or MgAl2O4 spinel. The generated

83

NETL: Hydrogen Selective Exfoliated Zeolite Membranes  

NLE Websites -- All DOE Office Websites (Extended Search)

Hydrogen Selective Exfoliated Zeolite Membranes Hydrogen Selective Exfoliated Zeolite Membranes Project No.: DE-FE0001322 The University of Minnesota is developing a technically and economically viable membrane for carbon dioxide (CO2) separation from typical water-gas-shift (WGS) mixture feeds. The goal of this project is to further develop recently developed membrane technology based on exfoliated zeolite coatings as components for carbon capture in integrated gasification combined cycle plants. These membranes have the potential to contribute to carbon capture by high-temperature separation of hydrogen from CO2 and other gases present in shifted synthesis gas. Molecular sieve membrane for the pre-combustion capture of CO2. Molecular sieve membrane for the pre-combustion capture of CO2. Related Papers and Publications:

84

Hydrogen Production by Polymer Electrolyte Membrane (PEM)Electrolysis...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

on Giner and Proton Presentation slides and speaker biographies from the DOE Fuel Cell Technologies Office webinar "Hydrogen Production by Polymer Electrolyte Membrane...

85

Low Cost Fabrication of Thin-Film Ceramic Membranes for Nonshrinking...  

NLE Websites -- All DOE Office Websites (Extended Search)

Low Cost Fabrication of Thin-Film Ceramic Membranes for Nonshrinking Substrates Lawrence Berkeley National Laboratory Contact LBL About This Technology Technology Marketing...

86

Novel Catalytic Membrane Reactors  

SciTech Connect

There are many industrial catalytic organic reversible reactions with amines or alcohols that have water as one of the products. Many of these reactions are homogeneously catalyzed. In all cases removal of water facilitates the reaction and produces more of the desired chemical product. By shifting the reaction to right we produce more chemical product with little or no additional capital investment. Many of these reactions can also relate to bioprocesses. Given the large number of water-organic compound separations achievable and the ability of the Compact Membrane Systems, Inc. (CMS) perfluoro membranes to withstand these harsh operating conditions, this is an ideal demonstration system for the water-of-reaction removal using a membrane reactor. Enhanced reaction synthesis is consistent with the DOE objective to lower the energy intensity of U.S. industry 25% by 2017 in accord with the Energy Policy Act of 2005 and to improve the United States manufacturing competitiveness. The objective of this program is to develop the platform technology for enhancing homogeneous catalytic chemical syntheses.

Stuart Nemser, PhD

2010-10-01T23:59:59.000Z

87

Sartobind Protein A 75 Membrane Adsorbers Operating Instructions  

E-Print Network (OSTI)

Sartobind Protein A 75 Membrane Adsorbers Operating Instructions A Separation Technology Based on Microporous Membranes 85030-517-47 Storage conditions Sartobind Protein A 75 Membrane Adsorbers have. Introduction Sartobind Protein A adsorbers represent a new generation of anti- body purification devices based

Lebendiker, Mario

88

Cleaning Membranes with Focused Ultrasound Beams for Drinking Water Treatment  

E-Print Network (OSTI)

Cleaning Membranes with Focused Ultrasound Beams for Drinking Water Treatment Jian-yu Lu1 , Xi Du2 micro pollutants such as harmful organics and cannot meet the demand for high-quality drinking water. Membrane technologies are known to produce drinking water of the highest quality. However, membrane fouling

Lu, Jian-yu

89

Membrane separation processes for clean production  

SciTech Connect

Clean production can be considered as a strategic element in manufacturing technology for present and future products in the chemical industry. Demand is focused on the development of cost-effective technologies, the optimization of processes including separation steps, alternative processes for the reduction of waste, optimization of the use of resources and improvements in production efficiency. In many cases an environmentally friendly alternative to conventional separation processes could be membrane separation. Membrane separation techniques are suitable for mixtures of liquids, gases and vapors. Some examples of successful applications in the areas of waste water treatment and vapor recovery are given. Demands, advantages and problems of separation with membranes are also discussed.

Paul, D.; Ohlrogge, K. [GKSS Research Center, Geesthacht (Germany)

1998-12-31T23:59:59.000Z

90

Application of Oak Ridge Inorganic Membrane  

NLE Websites -- All DOE Office Websites (Extended Search)

Oak Ridge Inorganic Membrane Oak Ridge Inorganic Membrane Technology to Cat Cracker Recycle Gas Hydrogen* FINAL REPORT DOE FEW FEAC324 June 2003 L.D. Trowbridge *AKA: Application of Inorganic Membrane Technology to Hydrogen-Hydrocarbon Separations ORNL/TM-2003/139 Application of Inorganic Membrane Technology To Hydrogen-hydrocarbon Separations June 2003 Prepared by L. D. Trowbridge DOCUMENT AVAILABILITY Reports produced after January 1, 1996, are generally available free via the U.S. Department of Energy (DOE) Information Bridge: Web site: http://www.osti.gov/bridge Reports produced before January 1, 1996, may be purchased by members of the public from the following source: National Technical Information Service 5285 Port Royal Road Springfield, VA 22161 Telephone: 703-605-6000 (1-800-553-6847)

91

Advanced membrane devices. Interim report for October 1996--September 1997  

SciTech Connect

Under this Cooperative Agreement, Air Products and Chemicals, Inc. has continued to investigate and develop improved membrane technology for removal of carbon dioxide from natural gas. The task schedule for this reporting period included a detailed assessment of the market opportunity (Chapter 2), continued development and evaluation of membranes and membrane polymers (Chapter 3) and a detailed economic analysis comparing the potential of Air Products membranes to that of established acid gas removal processes (Chapter 4).

Laciak, D.V.; Langsam, M.; Lewnard, J.J.; Reichart, G.C.

1997-12-31T23:59:59.000Z

92

Membrane-patch Excision  

Science Journals Connector (OSTI)

Mechanical manipulation of the cell using glass micropipettes that leads to the extraction of a narrow region of cell membrane. The excision can lead to an isolated membrane patch in which the side of the membran...

2009-01-01T23:59:59.000Z

93

Membrane cleaning in membrane bioreactors: A review  

Science Journals Connector (OSTI)

Abstract Membrane bioreactors (MBRs) have been widely used in wastewater treatment and reclamation. Membrane cleaning is an essential part during the operation of \\{MBRs\\} since membrane fouling is an unavoidable problem. In past decades, with the in-depth understanding on membrane fouling, significant advances in membrane cleaning have been achieved. However, a comprehensive review on membrane cleaning in \\{MBRs\\} is still lacking. This paper attempts to critically review the recent developments of membrane cleaning. Firstly, the fouling and cleaning fundamentals are addressed, and then a comprehensive review on physical, chemical, and biological/biochemical cleaning is presented. The procedures of determining proper cleaning protocols for MBR systems are also proposed. Finally, the existing challenges and future research efforts are discussed in order to ensure the development of membrane cleaning toward a more effective and sustainable way in MBRs.

Zhiwei Wang; Jinxing Ma; Chuyang Y. Tang; Katsuki Kimura; Qiaoying Wang; Xiaomeng Han

2014-01-01T23:59:59.000Z

94

Microcomposite Fuel Cell Membranes  

Energy.gov (U.S. Department of Energy (DOE))

Summary of microcomposite fuel cell membrane work presented to the High Temperature Membrane Working Group Meeting, Orlando FL, October 17, 2003

95

Membrane-Transistor Cable  

Science Journals Connector (OSTI)

Membrane-Transistor Cable ... The system is the basis for a development of bioelectronic transducers and for the study of nonlinear phenomena in membrane cables. ...

Marion Rentschler; Peter Fromherz

1998-01-20T23:59:59.000Z

96

Hydrogen Selective Exfoliated Zeolite Membranes  

NLE Websites -- All DOE Office Websites (Extended Search)

Hydrogen Selective Exfoliated Zeolite Hydrogen Selective Exfoliated Zeolite Membranes Background An important component of the Department of Energy (DOE) Carbon Sequestration Program is the development of carbon capture technologies for power systems. Capturing carbon dioxide (CO 2 ) from mixed-gas streams is a first and critical step in carbon sequestration. To be technically and economically viable, a successful separation method must be applicable to industrially relevant gas streams at realistic

97

Membranes for corrosive oxidations. Final CRADA report.  

SciTech Connect

The objective of this project is to develop porous hydrophilic membranes that are highly resistant to oxidative and corrosive conditions and to deploy them for recovery and purification of high tonnage chemicals such as hydrogen peroxide and other oxychemicals. The research team patented a process for membrane-based separation of hydrogen peroxide (US Patent No. 5,662,878). The process is based on using a hydrophilic membrane to separate hydrogen peroxide from the organic working solution. To enable this process, a new method for producing hydrophilic membrane materials (Patent No.6,464,880) was reported. We investigated methods of producing these hydrophilic materials and evaluated separations performance in comparison to membrane stability. It was determined that at the required membrane flux, membrane stability was not sufficient to design a commercial process. This work was published (Hestekin et al., J. Membrane Science 2006). To meet the performance needs of the process, we developed a membrane contactor method to extract the hydrogen peroxide, then we surveyed several commercial and pre-commercial membrane materials. We identified pre-commercial hydrophilic membranes with the required selectivity, flux, and stability to meet the needs of the process. In addition, we invented a novel reaction/separations format that greatly increases the performance of the process. To test the performance of the membranes and the new formats we procured and integrated reactor/membrane separations unit that enables controlled mixing, flow, temperature control, pressure control, and sampling. The results were used to file a US non-provisional patent application (ANL-INV 03-12). Hydrogen peroxide is widely used in pulp and paper applications, environmental treatment, and other industries. Virtually all hydrogen peroxide production is now based on a process featuring catalytic hydrogenation followed by auto-oxidation of suitable organic carrier molecules. This process has several drawbacks, particularly in the extraction phase. One general disadvantage of this technology is that hydrogen peroxide must be produced at large centralized plants where it is concentrated to 70% by distillation and transported to the users plant sites where it is diluted before use. Advanced membranes have the potential to enable more efficient, economic, and safe manufacture of hydrogen peroxide. Advanced membrane technology would allow filtration-based separation to replace the difficult liquid-liquid extraction based separation step of the hydrogen peroxide process. This would make it possible for hydrogen peroxide to be produced on-site in mini-plants at 30% concentration and used at the same plant location without distillation and transportation. As a result, production could become more cost-effective, safe and energy efficient.

Snyder, S. W.; Energy Systems

2010-02-01T23:59:59.000Z

98

Ceramic membrane treatment of petrochemical wastewater  

SciTech Connect

Ceramic alumina microfiltration membranes were evaluated for treatment of 3 aqueous streams containing heavy metals, oils, and solids at petrochemical manufacturing facilities. To the best of the author's knowledge, this is the first reported use of ceramic alumina membranes for process water and wastewater treatment in a US petrochemical plant. In a pilot test at a vinyl chloride monomer (VCM) plant, precipitated heavy metal solids were filtered with the membranes. On another stream at that site, the ceramic membrane pilot system successfully treated emulsions of 1,2-dichloroethane (EDC), water, and solids. Membrane filtration of a linear alkyl benzene (LAB) oily wastewater stream produced water with less than 5 ppmw oil and grease, after pretreatment with HCl and ferric chloride. A preliminary financial analysis shows that the installed system cost for a ceramic membrane unit is comparable to other membrane technologies, while operating costs are anticipated to be lower. Specific process conditions that are particularly amenable to treatment by ceramic membrane microfiltration are also given in the paper. 10 refs., 11 figs., 7 tabs.

Lahiere, R.J. (Vista Chemical Co., Houston, TX (United States)); Goodboy, K.P.

1993-05-01T23:59:59.000Z

99

Advanced Hydrogen Transport Membranes for Vision 21 Fossil Fuel Plants  

SciTech Connect

The objective of this project was to develop an environmentally benign, inexpensive, and efficient method for separating hydrogen from gas mixtures produced during industrial processes, such as coal gasification. A family of hydrogen separation membranes was developed including single phase mixed conducting ceramics, ceramic/ceramic composites, cermet membranes, cermet membranes containing a hydrogen permeable metal, and intermediate temperature composite layered membranes. Each membrane type had different operating parameters, advantages, and disadvantages that were documented over the course of the project. Research on these membranes progressed from ceramics to cermets to intermediate temperature composite layered membranes. During this progression performance was increased from 0.01 mL x min{sup -1} x cm{sup -2} up to 423 mL x min{sup -1} x cm{sup -2}. Eltron and team membranes not only developed each membrane type, but also membrane surface catalysis and impurity tolerance, creation of thin film membranes, alternative applications such as membrane promoted alkane dehydrogenation, demonstration of scale-up testing, and complete engineering documentation including process and mechanical considerations necessary for inclusion of Eltron membranes in a full scale integrated gasification combined cycle power plant. The results of this project directly led to a new $15 million program funded by the Department of Energy. This new project will focus exclusively on scale-up of this technology as part of the FutureGen initiative.

Carl R. Evenson; Shane E. Roark

2006-03-31T23:59:59.000Z

100

NETL: Gasification - Advanced Hydrogen Transport Membranes for Coal  

NLE Websites -- All DOE Office Websites (Extended Search)

Syngas Processing Systems Syngas Processing Systems Advanced Hydrogen Transport Membranes for Coal Gasification Praxair Inc. Project Number: FE0004908 Project Description Praxair is conducting research to develop hydrogen transport membrane (HTM) technology to separate carbon dioxide (CO2) and hydrogen (H2) in coal-derived syngas for IGCC applications. The project team has fabricated palladium based membranes and measured hydrogen fluxes as a function of pressure, temperature, and membrane preparation conditions. Membranes are a commercially-available technology in the chemical industry for CO2 removal and H2 purification. There is, however, no commercial application of membrane processes that aims at CO2 capture for IGCC syngas. Due to the modular nature of the membrane process, the design does not exhibit economy of scale-the cost of the system will increase linearly as the plant system scale increases making the use of commercially available membranes, for an IGCC power plant, cost prohibitive. For a membrane process to be a viable CO2 capture technology for IGCC applications, a better overall performance is required, including higher permeability, higher selectivity, and lower membrane cost.

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Membrane separation advances in FE hydrogen program  

SciTech Connect

Since its inception in Fiscal Year 2003 the US Office of Fossil Energy (FE) Hydrogen from Coal Program has sponsored more than 60 projects and made advances in the science of separating out pure hydrogen from syngas produced through coal gasification. The Program is focusing on advanced hydrogen separation technologies, which include membranes, and combining the WGS reaction and hydrogen separation in a single operation known as process intensification. The article explains the technologies and describes some key FE membrane projects. More details are available from http://www.fossil.energy.gov. 1 fig.

NONE

2007-12-31T23:59:59.000Z

102

Membrane Technology Workshop Summary Report, November 2012  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

and engine applications Hydrogen recovery from ammonia purge Low CO 2 level biogas and natural gas separation Monomer recovery from storage vessels, capturing and...

103

Membrane-based carbon capture from flue gas: A review  

Science Journals Connector (OSTI)

Abstract There has been an increasing interest in the application of membranes to flue gas separation, primarily driven by the need of carbon capture for significantly reducing greenhouse gas emissions. Historically, there has not been general consensus about the advantage of membranes against other methods such as liquid solvents for carbon capture. However, recent research indicates that advances in materials and process designs could significantly improve the separation performance of membrane capture systems, which make membrane technology competitive with other technologies for carbon capture. This paper mainly reviews membrane separation for the application to post-combustion CO2 capture with a focus on the developments and breakthroughs in membrane material design, process engineering, and engineering economics.

Rajab Khalilpour; Kathryn Mumford; Haibo Zhai; Ali Abbas; Geoff Stevens; Edward S. Rubin

2014-01-01T23:59:59.000Z

104

Composite zeolite membranes  

DOE Patents (OSTI)

A new class of composite zeolite membranes and synthesis techniques therefor has been invented. These membranes are essentially defect-free, and exhibit large levels of transmembrane flux and of chemical and isotopic selectivity.

Nenoff, Tina M. (Albuquerque, NM); Thoma, Steven G. (Albuquerque, NM); Ashley, Carol S. (Albuquerque, NM); Reed, Scott T. (Albuquerque, NM)

2002-01-01T23:59:59.000Z

105

Hybrid adsorptive membrane reactor  

DOE Patents (OSTI)

A hybrid adsorbent-membrane reactor in which the chemical reaction, membrane separation, and product adsorption are coupled. Also disclosed are a dual-reactor apparatus and a process using the reactor or the apparatus.

Tsotsis, Theodore T. (Huntington Beach, CA); Sahimi, Muhammad (Altadena, CA); Fayyaz-Najafi, Babak (Richmond, CA); Harale, Aadesh (Los Angeles, CA); Park, Byoung-Gi (Yeosu, KR); Liu, Paul K. T. (Lafayette Hill, PA)

2011-03-01T23:59:59.000Z

106

Supertubes and Superconducting Membranes  

SciTech Connect

We show the equivalence between configurations that arise from string theory of type IIA, called supertubes, and superconducting membranes at the bosonic level. We find equilibrium and oscillating configurations for a tubular membrane carrying a current along its axis.

Cordero, Ruben; Miguel-Pilar, Zelin [Departamento de Fisica, Escuela Superior de Fisica y Matematicas del IPN, Edificio 9, Unidad Profesional 'Adolfo Lopez Mateos', Zacatenco, 07738 Mexico D.F. (Mexico)

2007-02-09T23:59:59.000Z

107

Membrane Separations Research  

E-Print Network (OSTI)

MEMBRANE SEPARATIONS RESEARCH James R. Fair Chemical Engineering Department The University of Texas at Austin Austin, TX 78712 ABSTRACT The use of membranes for separating gaseous and liquid mixtures has grown dramatically in the past 15... years. Applications have been dominated by light gas separations and water purification. During this pioneering period, equipment containing the membrane suIfaces has been developed to a point where failures are minimal and the membranes themselves...

Fair, J. R.

108

Study of hydrogen isotopes super permeation through vanadium membrane on 'Prometheus' setup  

SciTech Connect

To develop the membrane pumping technology by means of superpermeable membranes at RFNC-VNIIEF in the 'Prometheus' setup, the experiments on superpermeation of hydrogen isotopes through metal membranes were carried out. The experimental results on superpermeation of thermal atoms of hydrogen isotopes including tritium through a cylindrical vanadium membrane are presented. The possibility of effective pumping, compression and recuperation of hydrogen isotopes by means of superpermeable membrane was demonstrated. The evaluation of membrane pumping rates and asymmetry degree of pure vanadium membrane was given. The work was performed under the ISTC-2854 project. (authors)

Musyaev, R. K.; Yukhimchuk, A. A.; Lebedev, B. S. [Russian Federal Nuclear Center-All-Russian Research Inst. of Experimental Physics RFNC-VNIIEF, 607188, Sarov, Nizhny Novgorod Region (Russian Federation); Busnyuk, A. O.; Notkin, M. E.; Samartsev, A. A.; Livshits, A. I. [St. Peterburg State Univ. of Telecommunications SUT, St. Peterburg (Russian Federation)

2008-07-15T23:59:59.000Z

109

Polyphosphazene semipermeable membranes  

DOE Patents (OSTI)

A semipermeable, inorganic membrane is disclosed; the membrane is prepared from a phosphazene polymer and, by the selective substitution of the constituent groups bound to the phosphorous in the polymer structure, the selective passage of fluid from a feedstream can be controlled. Resistance to high temperatures and harsh chemical environments is observed in the use of the phosphazene polymers as semipermeable membranes.

Allen, Charles A. (Idaho Falls, ID); McCaffrey, Robert R. (Idaho Falls, ID); Cummings, Daniel G. (Idaho Falls, ID); Grey, Alan E. (Idaho Falls, ID); Jessup, Janine S. (Darlington, ID); McAtee, Richard E. (Idaho Falls, ID)

1988-01-01T23:59:59.000Z

110

NETL: Low-Pressure Membrane Contactors for CO2 Capture  

NLE Websites -- All DOE Office Websites (Extended Search)

Low-Pressure Membrane Contactors for CO2 Capture Low-Pressure Membrane Contactors for CO2 Capture Project No.: DE-FE0007553 Membrane Technology and Research, Inc. (MTR) is developing a new type of membrane contactor (or mega-module) to separate carbon dioxide (CO2) from power plant flue gas. This module's membrane area is 500 square meters, 20 to 25 times larger than that of current modules used for CO2 capture. A 500-MWe coal power plant requires 0.5 to 1 million square meters of membrane to achieve 90 percent CO2 capture. The new mega-modules can drastically reduce the cost, complexity, and footprint of commercial-scale membrane module integration. Energy savings due to low-pressure drops for gases circulated through the modules, as well as improved countercurrent flow, are additional benefits. The feasibility of using mega-modules in several different hybrid process designs is being evaluated for future development potential.

111

Synthesis and design of optimal thermal membrane distillation networks  

E-Print Network (OSTI)

the separation of a feed mixture into two streams- a permeate and a retentate stream. Traditionally, studies on this technology have focused on the performance of individual modules as a function of material of the membrane and also configuration of the membrane...

Nyapathi Seshu, Madhav

2006-10-30T23:59:59.000Z

112

Hydrogen Production by Polymer Electrolyte Membrane (PEM) Electrolysis—Spotlight on Giner and Proton  

Energy.gov (U.S. Department of Energy (DOE))

Slides presented at the DOE Fuel Cell Technologies Office webinar "Hydrogen Production by Polymer Electrolyte Membrane (PEM) Electrolysis—Spotlight on Giner and Proton" on May 23, 2011.

113

Enhanced membrane gas separations  

SciTech Connect

An improved membrane gas separation process is described comprising: (a) passing a feed gas stream to the non-permeate side of a membrane system adapted for the passage of purge gas on the permeate side thereof, and for the passage of the feed gas stream in a counter current flow pattern relative to the flow of purge gas on the permeate side thereof, said membrane system being capable of selectively permeating a fast permeating component from said feed gas, at a feed gas pressure at or above atmospheric pressure; (b) passing purge gas to the permeate side of the membrane system in counter current flow to the flow of said feed gas stream in order to facilitate carrying away of said fast permeating component from the surface of the membrane and maintaining the driving force for removal of the fast permeating component through the membrane from the feed gas stream, said permeate side of the membrane being maintained at a subatmospheric pressure within the range of from about 0.1 to about 5 psia by vacuum pump means; (c) recovering a product gas stream from the non-permeate side of the membrane; and (d) discharging purge gas and the fast permeating component that has permeated the membrane from the permeate side of the membrane, whereby the vacuum conditions maintained on the permeate side of the membrane by said vacuum pump means enhance the efficiency of the gas separation operation, thereby reducing the overall energy requirements thereof.

Prasad, R.

1993-07-13T23:59:59.000Z

114

EM Task 9 - Centrifugal Membrane Filtration  

SciTech Connect

This project is designed to establish the utility of a novel centrifugal membrane filtration technology for the remediation of liquid mixed waste streams at US Department of Energy (DOE) facilities in support of the DOE Environmental Management (EM) program. The Energy and Environmental Research Center (EERC) has teamed with SpinTek Membrane Systems, Inc., a small business and owner of the novel centrifugal membrane filtration technology, to establish the applicability of the technology to DOE site remediation and the commercial viability of the technology for liquid mixed waste stream remediation. The technology is a uniquely configured process that makes use of ultrafiltration and centrifugal force to separate suspended and dissolved solids from liquid waste streams, producing a filtered water stream and a low-volume contaminated concentrate stream. This technology has the potential for effective and efficient waste volume minimization, the treatment of liquid tank wastes, the remediation of contaminated groundwater plumes, and the treatment of secondary liquid waste streams from other remediation processes, as well as the liquid waste stream generated during decontamination and decommissioning activities.

Stevens, B.G.; Stepan, D.J.; Hetland, M.D.

1998-11-01T23:59:59.000Z

115

NREL Develops Technique to Measure Membrane Thickness and Defects in Polymer Electrode Membrane Fuel Cells (Fact Sheet)  

SciTech Connect

This fact sheet describes NREL's accomplishments in fuel cell membrane electrode assembly research and development. Work was performed by the Hydrogen Technologies and Systems Center and the National Center for Photovoltaics.

Not Available

2010-11-01T23:59:59.000Z

116

CO2 Capture by Sub-Ambient Membrane Operation  

NLE Websites -- All DOE Office Websites (Extended Search)

by Sub-Ambient Membrane by Sub-Ambient Membrane Operation Background The mission of the U.S. Department of Energy/National Energy Technology Laboratory (DOE/NETL) Existing Plants, Emissions & Capture (EPEC) Research & Development (R&D) Program is to develop innovative environmental control technologies to enable full use of the nation's vast coal reserves, while at the same time allowing the current fleet of coal-fired power plants to comply with existing

117

Conductivity Measurements of Synthesized Heteropoly Acid Membranes for Proton Exchange Membrane Fuel Cells  

SciTech Connect

Fuel cell technology is receiving attention due to its potential to be a pollution free method of electricity production when using renewably produced hydrogen as fuel. In a Proton Exchange Membrane (PEM) fuel cell H2 and O2 react at separate electrodes, producing electricity, thermal energy, and water. A key component of the PEM fuel cell is the membrane that separates the electrodes. DuPont’s Nafion® is the most commonly used membrane in PEM fuel cells; however, fuel cell dehydration at temperatures near 100°C, resulting in poor conductivity, is a major hindrance to fuel cell performance. Recent studies incorporating heteropoly acids (HPAs) into membranes have shown an increase in conductivity and thus improvement in performance. HPAs are inorganic materials with known high proton conductivities. The primary objective of this work is to measure the conductivity of Nafion, X-Ionomer membranes, and National Renewable Energy Laboratory (NREL) Developed Membranes that are doped with different HPAs at different concentrations. Four-point conductivity measurements using a third generation BekkTech? conductivity test cell are used to determine membrane conductivity. The effect of multiple temperature and humidification levels is also examined. While the classic commercial membrane, Nafion, has a conductivity of approximately 0.10 S/cm, measurements for membranes in this study range from 0.0030 – 0.58 S/cm, depending on membrane type, structure of the HPA, and the relative humidity. In general, the X-ionomer with H6P2W21O71 HPA gave the highest conductivity and the Nafion with the 12-phosphotungstic (PW12) HPA gave the lowest. The NREL composite membranes had conductivities on the order of 0.0013 – 0.025 S/cm.

Record, K.A.; Haley, B.T.; Turner, J.

2006-01-01T23:59:59.000Z

118

NETL: Electrochemical Membranes for Carbon Dioxide Capture and Power  

NLE Websites -- All DOE Office Websites (Extended Search)

Electrochemical Membranes for Carbon Dioxide Capture and Power Generation Electrochemical Membranes for Carbon Dioxide Capture and Power Generation Project No.: DE-FE0007634 FuelCell Energy, Inc. has developed a novel system concept for the separation of carbon dioxide (CO2) from greenhouse gas (GHG) emission sources using an electrochemical membrane. The proposed membrane has its genesis from the company's patented Direct FuelCell® (DFC®) technology. The prominent feature of the DFC membrane is its capability to produce power while capturing CO2 from the flue gas from a pulverized coal (PC) plant. The DFC membrane does not require flue gas compression as it operates on the principles of electrochemistry, resulting in net efficiency gains. The membrane utilizes a fuel (different from the plant flue gas, such as coal-derived syngas, natural gas, or a renewable resource) as the driver for the combined carbon capture and electric power generation. The electrochemical membrane consists of ceramic-based layers filled with carbonate salts, separating CO2 from the flue gas. Because of the electrode's high reaction rates, the membrane does not require a high CO2 concentration in its feed gas. The planar geometry of the membrane offers ease of scalability to large sizes suitable for deployment in PC plants, which is an important attribute in membrane design. The membrane has been tested at the laboratory scale, verifying the feasibility of the technology for CO2 separation from simulated flue gases of PC plants as well as combined cycle power plants and other industrial facilities. Fuel Cell Energy, Inc. is advancing the technology to a maturity level suitable for adaption by industry for pilot-scale demonstration and subsequent commercial deployment.

119

NatriFloTM HD-Q Membrane Adsorbers: Method Development and Buffer Selection  

E-Print Network (OSTI)

NatriFloTM HD-Q Membrane Adsorbers: Method Development and Buffer Selection Introduction Anion for the resin beads. Conventional membrane adsorbers cannot provide sufficient process robustness due to low adsorber with competing technologies. Table 1: NatriFlo HD-Q membrane adsorber versus column chromatography

Lebendiker, Mario

120

Alkaline membrane fuel cells with in-situ cross-linked ionomers Yongjun Leng a  

E-Print Network (OSTI)

optimization is needed for the commercialization of alkaline membrane fuel cell (AMFC) technologiesAlkaline membrane fuel cells with in-situ cross-linked ionomers Yongjun Leng a , Lizhu Wang b membrane fuel cell (AMFC) in-situ cross-linking ionomer net water transport coefficient A B S T R A C

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Substituted polyacetylene separation membrane  

DOE Patents (OSTI)

A separation membrane is described which is useful for gas separation, particularly separation of C{sub 2+} hydrocarbons from natural gas. The invention encompasses the membrane itself, methods of making it and processes for using it. The membrane comprises a polymer having repeating units of a hydrocarbon-based, disubstituted polyacetylene, having the general formula shown in the accompanying diagram, wherein R{sub 1} is chosen from the group consisting of C{sub 1}-C{sub 4} alkyl and phenyl, and wherein R{sub 2} is chosen from the group consisting of hydrogen and phenyl. In the most preferred embodiment, the membrane comprises poly(4-methyl-2-pentyne) [PMP]. The membrane exhibits good chemical resistance and has super-glassy properties with regard to separating certain large, condensable permeant species from smaller, less-condensable permeant species. The membranes may also be useful in other fluid separations. 4 figs.

Pinnau, I.; Morisato, Atsushi

1998-01-13T23:59:59.000Z

122

Substituted polyacetylene separation membrane  

DOE Patents (OSTI)

A separation membrane useful for gas separation, particularly separation of C.sub.2+ hydrocarbons from natural gas. The invention encompasses the membrane itself, methods of making it and processes for using it. The membrane comprises a polymer having repeating units of a hydrocarbon-based, disubstituted polyacetylene, having the general formula: ##STR1## wherein R.sub.1 is chosen from the group consisting of C.sub.1 -C.sub.4 alkyl and phenyl, and wherein R.sub.2 is chosen from the group consisting of hydrogen and phenyl. In the most preferred embodiment, the membrane comprises poly(4-methyl-2-pentyne) ›PMP!. The membrane exhibits good chemical resistance and has super-glassy properties with regard to separating certain large, condensable permeant species from smaller, less-condensable permeant species. The membranes may also be useful in other fluid separations.

Pinnau, Ingo (Palo Alto, CA); Morisato, Atsushi (Tokyo, JP)

1998-01-13T23:59:59.000Z

123

Biomimetric Membrane for CO2 Capture from Flue Gas  

NLE Websites -- All DOE Office Websites (Extended Search)

Biomimetic memBrane for co Biomimetic memBrane for co 2 capture from flue Gas Background Carbon Capture and Sequestration (CCS) is a three-step process including capture, pipeline transport and geologic storage of which the capture of carbon dioxide (CO 2 ) is the most costly and technically challenging. Current available methods impose significant energy burdens that severely impact their overall effectiveness as a significant deployment option. Of the available capture technologies for post combustion applications - absorption, adsorption, reaction and membranes chemically facilitated absorption promises to be the most cost-effective membrane solution for post combustion application. The Carbozyme technology extracts CO 2 from low concentration, low pressure sources by means of chemical facilitation of a polymer membrane. The chemical

124

New membranes could speed the biofuels conversion process and reduce cost  

SciTech Connect

ORNL researchers have developed a new class of membranes that could enable faster, more cost efficient biofuels production. These membranes are tunable at the nanopore level and have potential uses in separating water from fuel and acid from bio-oils. The membrane materials technology just won an R&D 100 award. ORNL and NREL are partnering, with support from the DOE Bioenergy Technologies Office, to determine the best uses of these membranes to speed the biofuels conversion process. Development of the membranes was funded by DOE BETO and ORNL's Laboratory Directed Research and Development Program.

Hu, Michael

2014-07-23T23:59:59.000Z

125

New membranes could speed the biofuels conversion process and reduce cost  

ScienceCinema (OSTI)

ORNL researchers have developed a new class of membranes that could enable faster, more cost efficient biofuels production. These membranes are tunable at the nanopore level and have potential uses in separating water from fuel and acid from bio-oils. The membrane materials technology just won an R&D 100 award. ORNL and NREL are partnering, with support from the DOE Bioenergy Technologies Office, to determine the best uses of these membranes to speed the biofuels conversion process. Development of the membranes was funded by DOE BETO and ORNL's Laboratory Directed Research and Development Program.

Hu, Michael

2014-08-06T23:59:59.000Z

126

Model Cell Membranes  

Science Journals Connector (OSTI)

... are being used as model systems to test particular hypotheses in membrane transport. Thus, Tosteson and his colleagues (Andreoli et al., J. Gen. PhysioL, 50, 1729; ...

A Correspondent

1968-01-13T23:59:59.000Z

127

Anion exchange membrane  

DOE Patents (OSTI)

An anion exchange membrane and fuel cell incorporating the anion exchange membrane are detailed in which proazaphosphatrane and azaphosphatrane cations are covalently bonded to a sulfonated fluoropolymer support along with anionic counterions. A positive charge is dispersed in the aforementioned cations which are buried in the support to reduce the cation-anion interactions and increase the mobility of hydroxide ions, for example, across the membrane. The anion exchange membrane has the ability to operate at high temperatures and in highly alkaline environments with high conductivity and low resistance.

Verkade, John G; Wadhwa, Kuldeep; Kong, Xueqian; Schmidt-Rohr, Klaus

2013-05-07T23:59:59.000Z

128

Exploring knowledge diffusion among nations: a study of core technologies in fuel cells  

Science Journals Connector (OSTI)

Technological trajectory is a representation of the development of technology. Based on the analysis of the trajectories of prominent technologies, we can explore the phenomena of technology evolution and knowledge diffusion. In this study, we focus ... Keywords: Knowledge diffusion, Membrane electrode assembly (MEA), Patent citation network, Proton exchange membrane fuel cells (PEMFCs), Technological trajectory

Mei Hsiu-Ching Ho; Vincent H. Lin; John S. Liu

2014-07-01T23:59:59.000Z

129

Chapter 6 - Nanostructured Membranes for Water Purification  

Science Journals Connector (OSTI)

Application of nanotechnology to water purification is currently faced with the issue of how to design nanomaterials that are capable of collecting and preconcentrating a large number of contaminants per unit volume. Specifically, it is not clear how to interface nanoparticles with contaminants because direct addition of nanoparticles into drinking water may require extra separation steps to recover the expensive nanomaterials. Due to their large pore sizes, conventional membrane filters cannot be used for removing submicron particles, engineered nanoparticles, or biological particles within the range of 100 nm or below. To overcome these challenges, we present transformative membrane technologies that are based on the use of nanostructured conducting phase-inverted poly(amic acid) membranes to isolate and remove silver nanoparticles, quantum dots, and titanium dioxide particles in environmental samples. nPAA membranes have also been utilized to remove pathogenic bacteria in drinking water. Filtration efficiency of over 99.98% was recorded for most contaminants. The membrane pore sizes were experimentally controlled from 4 to 35 nm, and the optimized membranes were tested against three of the most common drinking water contaminants, namely Escherichia coli, Citrobacter freundii, and Staphylococcus epidermidis. Hundred percent removal of these microbial species were recorded and the results were validated with conventional plating techniques.

Omowunmi A. Sadik; Nian Du; Idris Yazgan; Veronica Okello

2014-01-01T23:59:59.000Z

130

High Efficiency Solar Integrated Roof Membrane Product  

SciTech Connect

This project was designed to address the Solar Energy Technology Program objective, to develop new methods to integrate photovoltaic (PV) cells or modules within a building-integrated photovoltaic (BIPV) application that will result in lower installed cost as well as higher efficiencies of the encapsulated/embedded PV module. The technology assessment and development focused on the evaluation and identification of manufacturing technologies and equipment capable of producing such low-cost, high-efficiency, flexible BIPV solar cells on single-ply roofing membranes.

Partyka, Eric; Shenoy, Anil

2013-05-15T23:59:59.000Z

131

NETL: Novel Polymer Membrane Process for Pre-Combustions CO2 Capture from  

NLE Websites -- All DOE Office Websites (Extended Search)

Polymer Membrane Process for Pre-Combustions CO2 Capture from Coal-Fired Syngas Polymer Membrane Process for Pre-Combustions CO2 Capture from Coal-Fired Syngas Project No.: DE-FE0001124 Membrane Technology Research (MTR) is developing a high-temperature stable polymer membrane to separate hydrogen from carbon dioxide (H2/CO2). MTR will investigate novel high-temperature-stable polymers identified by Tetramer for use in H2/CO2 selective membranes. They will also conduct bench-scale testing of optimized membranes and membrane modules with simulated syngas to evaluate the membrane performance and lifetime under expected operating conditions. The advantages of this technology are that the process can be done warm/hot to reduce the need for heat exchange and nitrogen sweep can be used to maintain permeate fuel gas at turbine pressure.

132

NETL: IEP - Post-Combustion CO2 Emissions Control - Membrane Process to  

NLE Websites -- All DOE Office Websites (Extended Search)

Membrane Process to Capture CO2 from Power Plant Flue Gas Membrane Process to Capture CO2 from Power Plant Flue Gas Project No.: DE-NT0005312 CLICK ON IMAGE TO ENLARGE MTR membrane test skid. Membrane Technology and Research (MTR) Inc. is preparing commercial-scale membrane modules that meet low pressure-drop and high packing-density performance targets using carbon dioxide (CO2) capture membranes developed under FC26-07NT43085, a previous MTR project with the U.S. Department of Energy's National Energy Technology Laboratory. These thin-film membranes utilize Pebax® polyether-polyamide copolymers. The new research will involve the construction of an approximately 1 ton of CO2 per day capacity membrane skid for use in a six-month pilot-scale field test using a slip-stream of flue gas from a coal-fired power plant.

133

Novel Metallic Membranes for Hydrogen Separation  

SciTech Connect

To reduce dependence on oil and emission of greenhouse gases, hydrogen is favored as an energy carrier for the near future. Hydrogen can be converted to electrical energy utilizing fuel cells and turbines. One way to produce hydrogen is to gasify coal which is abundant in the U.S. The coal gasification produces syngas from which hydrogen is then separated. Designing metallic alloys for hydrogen separation membranes which will work in a syngas environment poses significant challenges. In this presentation, a review of technical targets, metallic membrane development activities at NETL and challenges that are facing the development of new technologies will be given.

Dogan, Omer

2011-02-27T23:59:59.000Z

134

Ensure the best performance from membranes and demineralizers  

SciTech Connect

This article discusses how the use of various membrane technologies to provide high-purity water for power generation has increased dramatically in the last 10 years. This trend has been driven primarily by three factors: (1) reduction in costs achieved through reduced chemical, operation, and maintenance requirements; (2) reduction of waste-treatment requirements in response to new environmental legislation; and (3) reduction of man-power requirements for monitoring regeneration of ion-exchange (IX) regenerations. The economic impact of membrane technology applied ahead of a makeup water demineralizer can be illustrated by a series of examples with three different waters, each used at three different flow rates. A cost analysis is provided for each case, before and after backfitting a membrane system. For perspective, the leading membrane technologies are reviewed first.

Strauss, S.D.

1993-03-01T23:59:59.000Z

135

Membrane module assembly  

DOE Patents (OSTI)

A membrane module assembly is described which is adapted to provide a flow path for the incoming feed stream that forces it into prolonged heat-exchanging contact with a heating or cooling mechanism. Membrane separation processes employing the module assembly are also disclosed. The assembly is particularly useful for gas separation or pervaporation. 2 figures.

Kaschemekat, J.

1994-03-15T23:59:59.000Z

136

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect

This report covers the following tasks: Task 1--Design, fabricate and evaluate ceramic to metal seals based on graded ceramic powder/metal braze joints; Task 2--Evaluate the effect of defect configuration on ceramic membrane conductivity and long term chemical and structural stability; Task 3--Determine materials mechanical properties under conditions of high temperatures and reactive atmospheres; Task 4--Evaluate phase stability and thermal expansion of candidate perovskite membranes and develop techniques to support these materials on porous metal structures; Task 5--Assess the microstructure of membrane materials to evaluate the effects of vacancy-impurity association, defect clusters, and vacancy-dopant association on the membrane performance and stability; and Task 6--Measure kinetics of oxygen uptake and transport in ceramic membrane materials under commercially relevant conditions using isotope labeling techniques.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2002-04-01T23:59:59.000Z

137

Novel Ceramic-Polymer Composite Membranes for the Separation of Hazardous Liquid Waste  

SciTech Connect

The present project was conceived to address the need for robust yet selective membranes suitable for operating in harsh ph, solvent, and temperature environments. An important goal of the project was to develop a membrane chemical modification technology that would allow one to tailor-design membranes for targeted separation tasks. The method developed in the present study is based on the process of surface graft polymerization. Using essentially the same base technology of surface modification the research was aimed at demonstrating that improved membranes can be designed for both pervaporation separation and ultrafiltration. In the case of pervaporation, the present study was the first to demonstrate that pervaporation can be achieved with ceramic support membranes modified with an essentially molecular layer of terminally anchored polymer chains. The main advantage of the above approach, relative to other proposed membranes, is that the separating polymer layer is covalently attached to the ceramic support. Therefore, such membranes have a potential use in organic-organic separations where the polymer can swell significantly yet membrane robustness is maintained due to the chemical linkage of the chains to be inorganic support. The above membrane technology was also useful in developing fouling resistant ultrafiltration membranes. The prototype membrane developed in the project was evaluated for the treatment of oil-in-water microemulsions, demonstrating lack of irreversible fouling common with commercial membranes.

Yoram Cohen

2001-12-01T23:59:59.000Z

138

Diffraction-Based Density Restraints for Membrane and Membrane-Peptide Molecular Dynamics Simulations  

E-Print Network (OSTI)

or neutron scattering-length density projected along the bilayer normal (5). These profiles represent, California; and z NIST Center for Neutron Research, National Institute of Standards and Technology. INTRODUCTION X-ray and neutron diffraction are commonly used for studying the structure of membrane systems (1

White, Stephen

139

High performance and antifouling vertically aligned carbon nanotube membrane for water purification  

Science Journals Connector (OSTI)

Abstract A vertically aligned carbon nanotube (VA CNT) membrane created from the successful fusion of nanotechnology and membrane technology has been stated to be a next generation membrane due to its fast water transport and antimicrobial properties. Although previous studies of the VA CNT membrane reported the potential for fast water transport or desalination by molecular dynamics simulation, this study is the first to report on the feasibility of using the VA CNT membrane for water purification. The VA CNT membrane (4.8 nm of pore diameter and 6.8×1010 #/cm2 of pore density) was fabricated and its flux, rejection performance, and membrane biofouling tendency were evaluated in comparison to the commercial ultrafiltration (UF) membrane. The VA CNT membrane appeared to have a water flux approximately three times higher than the UF membrane and water transport approximately 70,000 times faster than conventional no-slip flow. This higher flux was peculiarly observed in water, the most hydrophilic solvent, while other solvents showed that permeate flux decreased with higher viscosity. The rejection property of the VA CNT membrane as examined by the MWCO measurement was similar to the commercial UF membrane. Additionally, the VA CNT membrane showed better biofouling resistance with approximately 15% less permeate flux reduction and 2 log less bacterial attachment than the UF membrane. This study reports the high potential of the VA CNT membrane with antifouling property in the water purification process.

Youngbin Baek; Cholin Kim; Dong Kyun Seo; Taewoo Kim; Jeong Seok Lee; Yong Hyup Kim; Kyung Hyun Ahn; Sang Seek Bae; Sang Cheol Lee; Jaelim Lim; Kyunghyuk Lee; Jeyong Yoon

2014-01-01T23:59:59.000Z

140

Original article Flat ceramic membranes  

E-Print Network (OSTI)

membranes. The orig- inal intellectual concept is protected by two international patents. Strategically of investment and functioning costs while keeping the interest of ceramics. ceramic membrane / plate / tubular

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

High Temperature Membrane Working Group  

Energy.gov (U.S. Department of Energy (DOE))

The High Temperature Membrane Working Group consists of government, industry, and university researchers interested in developing high temperature membranes for fuel cells.

142

Borla Performance Industries, Inc. | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Borla Borla Performance Industries, Inc. America's Next Top Energy Innovator Challenge 1830 likes Borla Performance Industries, Inc. Oak Ridge National Laboratory Borla Performance Industries is a 35-year technology leader, manufacturer and marketer of exhaust for the automotive industry, delivering innovative, patented exhaust systems that enhance the performance of internal combustion engines. Borla has an option to license a novel, nano-pore membrane technology from OakRidge National Laboratory. Combining this innovation with Borla's diesel exhaust technology will lead to a low cost, unique exhaust system that will double as a neutral energy device to recover and reclaim potable water from diesel and other internal combustion exhaust. Using capillary condensation - which contrasts to thermodynamic

143

Borla Performance Industries, Inc. | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Borla Borla Performance Industries, Inc. America's Next Top Energy Innovator Challenge 1830 likes Borla Performance Industries, Inc. Oak Ridge National Laboratory Borla Performance Industries is a 35-year technology leader, manufacturer and marketer of exhaust for the automotive industry, delivering innovative, patented exhaust systems that enhance the performance of internal combustion engines. Borla has an option to license a novel, nano-pore membrane technology from OakRidge National Laboratory. Combining this innovation with Borla's diesel exhaust technology will lead to a low cost, unique exhaust system that will double as a neutral energy device to recover and reclaim potable water from diesel and other internal combustion exhaust. Using capillary condensation - which contrasts to thermodynamic

144

Borla Performance Industries, Inc. | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Borla Borla Performance Industries, Inc. America's Next Top Energy Innovator Challenge 1830 likes Borla Performance Industries, Inc. Oak Ridge National Laboratory Borla Performance Industries is a 35-year technology leader, manufacturer and marketer of exhaust for the automotive industry, delivering innovative, patented exhaust systems that enhance the performance of internal combustion engines. Borla has an option to license a novel, nano-pore membrane technology from OakRidge National Laboratory. Combining this innovation with Borla's diesel exhaust technology will lead to a low cost, unique exhaust system that will double as a neutral energy device to recover and reclaim potable water from diesel and other internal combustion exhaust. Using capillary condensation - which contrasts to thermodynamic

145

Ordered ceramic membranes  

SciTech Connect

Ceramic membranes have been formed from colloidal sols coated on porous clay supports. These supported membranes have been characterized in terms of their permeabilities and permselectivities to various aqueous test solutions. The thermal stabilities and pore structures of these membranes have been characterized by preparing unsupported membranes of the correpsonding material and performing N{sub 2} adsorption-desorption and X-ray diffraction studies on these membranes. To date, membranes have been prepared from a variety of oxides, including TiO{sub 2}, SiO{sub 2}, ZrO{sub 2}, and Al{sub 2}O{sub 3}, as well as Zr-, Fe-, and Nb-doped TiO{sub 2}. In many of these membranes pore diameters are less than 2 nm, while in others the pore diameters are between 3 and 5 nm. Procedures for fabricating porous clay supports with reproducible permeabilities for pure water are also discussed. 30 refs., 59 figs., 22 tabs.

Anderson, M.A.; Hill, C.G. Jr.; Zeltner, W.A.

1991-10-01T23:59:59.000Z

146

Catalytic nanoporous membranes  

DOE Patents (OSTI)

A nanoporous catalytic membrane which displays several unique features Including pores which can go through the entire thickness of the membrane. The membrane has a higher catalytic and product selectivity than conventional catalysts. Anodic aluminum oxide (AAO) membranes serve as the catalyst substrate. This substrate is then subjected to Atomic Layer Deposition (ALD), which allows the controlled narrowing of the pores from 40 nm to 10 nm in the substrate by deposition of a preparatory material. Subsequent deposition of a catalytic layer on the inner surfaces of the pores reduces pore sizes to less than 10 nm and allows for a higher degree of reaction selectivity. The small pore sizes allow control over which molecules enter the pores, and the flow-through feature can allow for partial oxidation of reactant species as opposed to complete oxidation. A nanoporous separation membrane, produced by ALD is also provided for use in gaseous and liquid separations. The membrane has a high flow rate of material with 100% selectivity. Also provided is a method for producing a catalytic membrane having flow-through pores and discreet catalytic clusters adhering to the inside surfaces of the pores.

Pellin, Michael J; Hryn, John N; Elam, Jeffrey W

2013-08-27T23:59:59.000Z

147

Current status and development of membranes for CO2/CH4 separation: A review  

Science Journals Connector (OSTI)

Carbon dioxide (CO2) is a greenhouse gas found primarily as a main combustion product of fossil fuel as well as a component in natural gas, biogas and landfill gas. The interest to remove CO2 from those gas streams to obtain fuel with enhanced energy content and prevent corrosion problems in the gas transportation system, in addition to CO2 implications to the climate change, has driven the development of CO2 separation process technology. One type of technology which has experienced substantial growth, breakthroughs and advances during past decades is membrane-based technology. The attractive features offered by this technology include high energy efficiency, simplicity in design and construction of membrane modules and environmental compatibility. The objective of this review is to overview the different types of membranes available for use including their working principles, current status and development which form the primary determinants of separation performance and efficiency. The emphasis is toward CO2/CH4 separation, considering its substantial and direct relevance to the gas industry. To this end, discussion is made to cover polymeric gas permeation membranes; CO2-selective facilitated transport membranes, hollow fiber gas–liquid membrane contactors, inorganic membranes and mixed matrix membranes. The market for CO2 separation is currently dominated by polymeric membranes due to their relatively low manufacturing cost and processing ability into flat sheet and hollow fiber configurations as well as well-documented research studies. While there have been immensely successful membrane preparation and development techniques with consequential remarkable performance for each type of membrane. Each type of membrane brings associated advantages and drawbacks related to the characteristic transport mechanism for specific application conditions. Inorganic membranes, for example, are very suitable for high temperature CO2 separation in excess of 400 °C while all other membranes can be applied at lower temperatures. The recent emergence of mixed matrix membranes has allowed the innovative approach to combine the advantages offered by inorganic and polymeric materials.

Yuan Zhang; Jaka Sunarso; Shaomin Liu; Rong Wang

2013-01-01T23:59:59.000Z

148

Composite metal membrane  

DOE Patents (OSTI)

A composite metal membrane including a first metal layer of Group IVB met or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof is provided together with a process for the recovery of hydrogen from a gaseous mixture including contacting a hydrogen-containing gaseous mixture with a first side of a nonporous composite metal membrane including a first metal of Group IVB metals or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof, and, separating hydrogen from a second side of the nonporous composite metal membrane.

Peachey, Nathaniel M. (Espanola, NM); Dye, Robert C. (Los Alamos, NM); Snow, Ronny C. (Los Alamos, NM); Birdsell, Stephan A. (Los Alamos, NM)

1998-01-01T23:59:59.000Z

149

Composite metal membrane  

DOE Patents (OSTI)

A composite metal membrane including a first metal layer of Group IVB met or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof is provided together with a process for the recovery of hydrogen from a gaseous mixture including contacting a hydrogen-containing gaseous mixture with a first side of a nonporous composite metal membrane including a first metal of Group IVB metals or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof, and, separating hydrogen from a second side of the nonporous composite metal membrane.

Peachey, N.M.; Dye, R.C.; Snow, R.C.; Birdsell, S.A.

1998-04-14T23:59:59.000Z

150

Novel, Ceramic Membrane System For Hydrogen Separation  

SciTech Connect

Separation of hydrogen from coal gas represents one of the most promising ways to produce alternative sources of fuel. Ceramatec, teamed with CoorsTek and Sandia National Laboratories has developed materials technology for a pressure driven, high temperature proton-electron mixed conducting membrane system to remove hydrogen from the syngas. This system separates high purity hydrogen and isolates high pressure CO{sub 2} as the retentate, which is amenable to low cost capture and transport to storage sites. The team demonstrated a highly efficient, pressure-driven hydrogen separation membrane to generate high purity hydrogen from syngas using a novel ceramic-ceramic composite membrane. Recognizing the benefits and limitations of present membrane systems, the all-ceramic system has been developed to address the key technical challenges related to materials performance under actual operating conditions, while retaining the advantages of thermal and process compatibility offered by the ceramic membranes. The feasibility of the concept has already been demonstrated at Ceramatec. This project developed advanced materials composition for potential integration with water gas shift rectors to maximize the hydrogenproduction.

Elangovan, S.

2012-12-31T23:59:59.000Z

151

A membrane interferometer  

Science Journals Connector (OSTI)

...bilayer membranes from lipid monolayers. A critique . Biophys J 16 : 481 – 489 . Acknowledgments We thank Profs. Nick Melosh, Merritt Maduke, and Stephen White for useful insights and suggestions. The Cy5-DNA-lipid conjugate was synthesized...

Prasad V. Ganesan; Steven G. Boxer

2009-01-01T23:59:59.000Z

152

Wrinkling in polygonal membranes  

E-Print Network (OSTI)

boundary conditions of the polygons. When pressurised, the polygonal membranes naturally reach a parabolic shape towards their centre, the extent of which varies greatly depending on a large number of parameters, including most particularly pre...

Bonin, Arnaud Stephane

2012-02-07T23:59:59.000Z

153

Reverse Osmosis Membranes  

Science Journals Connector (OSTI)

A bibliography of citations from the U.S. National Technical Information Service data base with 183 abstracts on membranes for reverse osmosis desalination, electro-dialysis desalination and other osmotic desa...

Prof. Dr. Anthony Delyannis; Dr. Euridike-Emmy Delyannis

1980-01-01T23:59:59.000Z

154

Oxy-combustion: Oxygen Transport Membrane Development  

NLE Websites -- All DOE Office Websites (Extended Search)

combustion: Oxygen Transport combustion: Oxygen Transport Membrane Development Background The mission of the U.S. Department of Energy's (DOE) Existing Plants, Emissions & Capture (EPEC) Research & Development (R&D) Program is to develop innovative environmental control technologies to enable full use of the nation's vast coal reserves, while at the same time allowing the current fleet of coal-fired power plants to comply with existing and emerging environmental regulations. The EPEC R&D

155

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect

This is the third quarterly report on oxygen Transport Ceramic Membranes. In the following, the report describes the progress made by our university partners in Tasks 1 through 6, experimental apparatus that was designed and built for various tasks of this project, thermodynamic calculations, where applicable and work planned for the future. (Task 1) Design, fabricate and evaluate ceramic to metal seals based on graded ceramic powder/metal braze joints. (Task 2) Evaluate the effect of defect configuration on ceramic membrane conductivity and long term chemical and structural stability. (Task 3) Determine materials mechanical properties under conditions of high temperatures and reactive atmospheres. (Task 4) Evaluate phase stability and thermal expansion of candidate perovskite membranes and develop techniques to support these materials on porous metal structures. (Task 5) Assess the microstructure of membrane materials to evaluate the effects of vacancy-impurity association, defect clusters, and vacancy-dopant association on the membrane performance and stability. (Task 6) Measure kinetics of oxygen uptake and transport in ceramic membrane materials under commercially relevant conditions using isotope labeling techniques.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2000-10-01T23:59:59.000Z

156

High Temperature Membrane Working Group  

Energy.gov (U.S. Department of Energy (DOE))

This presentation provides an overview of the High Temperature Membrane Working Group Meeting in May 2007.

157

Membrane fusion: Ready ? aim ? fire!  

Science Journals Connector (OSTI)

... All cells use a programme of membrane fusion and fission to assemble membranes, both internally and on their surface. Given that biological ... internally and on their surface. Given that biological membranes are essentially two-dimensional fluids, fusion must obey certain restrictions that prevent incompatible membranes from intermixing. Without such selective contact, ...

Randy Schekman

1998-12-10T23:59:59.000Z

158

The State of Water in Proton Conducting Membranes  

SciTech Connect

The research carried out under grant No. DE-FG02-07ER46371, "The State of Water in Proton Conducting Membranes", during the period June 1, 2008 -May 31, 2010 was comprised of three related parts. These are: 1. An examination of the state of water in classical proton conduction membranes with the use of deuterium T1 NMR spectroscopy (Allcock and Benesi groups). 2. A dielectric relaxation examination of the behavior of water in classical ionomer membranes (Macdonald program). 3. Attempts to synthesize new proton-conduction polymers and membranes derived from the polyphosphazene system. (Allcock program) All three are closely related, crucial aspects of the design and development of new and improved polymer electrolyte fuel cell membranes on which the future of fuel cell technology for portable applications depends.

Allcock, Harry R., Benesi, Alan, Macdonald, Digby, D.

2010-08-27T23:59:59.000Z

159

Biominetic Membrane for Co2 Capture from Flue Gas  

NLE Websites -- All DOE Office Websites (Extended Search)

Biomimetic Membrane for CO Biomimetic Membrane for CO 2 Capture from Flue Gas Background Carbon Capture and Sequestration (CCS) is a three-step process including capture, pipeline transport, and geologic storage of which the capture of carbon dioxide (CO 2 ) is the most costly and technically challenging. Current available methods impose significant energy burdens that severely impact their overall effectiveness as a significant deployment option. Of the available capture technologies for post

160

Advanced Palladium Membrane Scale-up for Hydrogen Separation  

NLE Websites -- All DOE Office Websites (Extended Search)

Palladium Membrane Scale-up Palladium Membrane Scale-up for Hydrogen Separation Background Among the options being considered to establish greater U.S. independence from foreign energy sources is to increase the use of the nation's domestic coal reserves. The Department of Energy (DOE) is committed to supporting research and development of technologies for the reliable, efficient and environmentally friendly conversion of coal to hydrogen for utilization in advanced gasification-based electric power generation

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161

Pilot Scale Water Gas Shift - Membrane Device for Hydrogen from Coal  

SciTech Connect

The objectives of the project were to build pilot scale hydrogen separation systems for use in a gasification product stream. This device would demonstrate fabrication and manufacturing techniques for producing commercially ready facilities. The design was a 2 lb/day hydrogen device which included composite hydrogen separation membranes, a water gas shift monolith catalyst, and stainless steel structural components. Synkera Technologies was to prepare hydrogen separation membranes with metallic rims, and to adjust the alloy composition in their membranes to a palladium-gold composition which is sulfur resistant. Chart was to confirm their brazing technology for bonding the metallic rims of the composite membranes to their structural components and design and build the 2 lbs/day device incorporating membranes and catalysts. WRI prepared the catalysts and completed the testing of the membranes and devices on coal derived syngas. The reactor incorporated eighteen 2'' by 7'' composite palladium alloy membranes. These membranes were assembled with three stacks of three paired membranes. Initial vacuum testing and visual inspection indicated that some membranes were cracked, either in transportation or in testing. During replacement of the failed membranes, while pulling a vacuum on the back side of the membranes, folds were formed in the flexible composite membranes. In some instances these folds led to cracks, primarily at the interface between the alumina and the aluminum rim. The design of the 2 lb/day device was compromised by the lack of any membrane isolation. A leak in any membrane failed the entire device. A large number of tests were undertaken to bring the full 2 lb per day hydrogen capacity on line, but no single test lasted more than 48 hours. Subsequent tests to replace the mechanical seals with brazing have been promising, but the technology remains promising but not proven.

Barton, Tom

2013-06-30T23:59:59.000Z

162

Oxygen Transport Ceramic Membranes  

SciTech Connect

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. In the current research, the electrical conductivity and Seebeck coefficient were measured as a function of temperature in air. Based on these measurements, the charge carrier concentration, net acceptor dopant concentration, activation energy of conduction and mobility were estimated. The studies on the fracture toughness of the LSFT and dual phase membranes at room temperature have been completed and reported previously. The membranes that are exposed to high temperatures at an inert and a reactive atmosphere undergo many structural and chemical changes which affects the mechanical properties. To study the effect of temperature on the membranes when exposed to an inert environment, the membranes (LAFT and Dual phase) were heat treated at 1000 C in air and N{sub 2} atmosphere and hardness and fracture toughness of the membranes were studied after the treatment. The indentation method was used to find the fracture toughness and the effect of the heat treatment on the mechanical properties of the membranes. Further results on the investigation of the origin of the slow kinetics on reduction of ferrites have been obtained. The slow kinetics appears to be related to a non-equilibrium reduction pathway that initially results in the formation of iron particles. At long times, equilibrium can be reestablished with recovery of the perovskite phase. 2-D modeling of oxygen movement has been undertaken in order to fit isotope data. The model will serve to study ''frozen'' profiles in patterned or composite membranes.

S. Bandopadhyay; T. Nithyanantham; X.-D Zhou; Y-W. Sin; H.U. Anderson; Alan Jacobson; C.A. Mims

2005-11-01T23:59:59.000Z

163

Polyvinylidene Fluoride-Based Membranes for Direct Methanol Fuel Cell Applications  

NLE Websites -- All DOE Office Websites (Extended Search)

Polyvinylidene Fluoride-Based Polyvinylidene Fluoride-Based Membranes for Direct Methanol Fuel Cell Applications Wensheng He, David Mountz, Tao Zhang, Chris Roger July 17, 2012 2 Outline Background on Arkema's polyvinylidene fluoride (PVDF) blend membrane technology Overview of membrane properties and performance Summary 3 Membrane Technology Polymer Blend * Kynar ® PVDF * Chemical and electrochemical stability * Mechanical strength * Excellent barrier against methanol * Polyelectrolyte * H + conduction and water uptake Flexible Blending Process  PVDF can be compatibilized with a number of polyelectrolytes  Process has been scaled to a pilot line Property Control * Morphology: 10-100s nm domains * Composition can be tailored to minimize methanol permeation, while optimizing

164

ENGINEERING TECHNOLOGY Engineering Technology  

E-Print Network (OSTI)

, Mechatronics Technology, and Renewable Energy Technology. Career Opportunities Graduates of four: business administration, wind farm management, aircraft maintenance, tooling production, quality and safety or selected program track focus. Transfer students must talk to their advisor about transferring their courses

165

ENGINEERING TECHNOLOGY Engineering Technology  

E-Print Network (OSTI)

: business administration, energy management, wind farm management, automation and controls, aircraft, Mechatronics Technology, and Renewable Energy Technology. Career Opportunities Graduates of four students must talk to their advisor about transferring their courses over for WSU credit. Laboratory

166

Building Technologies Office: Emerging Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Emerging Technologies Emerging Technologies Printable Version Share this resource Send a link to Building Technologies Office: Emerging Technologies to someone by E-mail Share Building Technologies Office: Emerging Technologies on Facebook Tweet about Building Technologies Office: Emerging Technologies on Twitter Bookmark Building Technologies Office: Emerging Technologies on Google Bookmark Building Technologies Office: Emerging Technologies on Delicious Rank Building Technologies Office: Emerging Technologies on Digg Find More places to share Building Technologies Office: Emerging Technologies on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Technology Research, Standards, & Codes Popular Links Success Stories Previous Next Lighten Energy Loads with System Design.

167

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect

In the present quarter, oxygen transport perovskite ceramic membranes are evaluated for strength and fracture in oxygen gradient conditions. Oxygen gradients are created in tubular membranes by insulating the inner surface from the reducing environment by platinum foils. Fracture in these test conditions is observed to have a gradient in trans and inter-granular fracture as opposed to pure trans-granular fracture observed in homogeneous conditions. Fracture gradients are reasoned to be due to oxygen gradient set up in the membrane, variation in stoichiometry across the thickness and due to varying decomposition of the parent perovskite. The studies are useful in predicting fracture criterion in actual reactor conditions and in understanding the initial evolution of fracture processes.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2002-07-01T23:59:59.000Z

168

Oxygen Transport Ceramic Membranes  

SciTech Connect

In this quarter a systematic analysis on the decomposition behavior of the OTM membranes at air and nitrogen were initiated to understand the structural and stoichiometric changes associated with elevated temperatures. Evaluation of the flexural strengths using 4-point bend test was also started for the dual phase membranes. Initial results on the synthesis of dual phase composite materials have been obtained. The measurements have focused on the compatibility of mixed conductors with the pure ionic conductors yttria stabilized zirconia (YSZ) and gadolinium doped ceria (GDC). The initial results obtained for three different mixed conductors suggest that (GDC) is the better choice. A new membrane permeation system has been designed and tested and sintering studies of biphasic systems are in progress.

S. Bandopadhyay; T. Nithyanantham; X.-D Zhou; Y-W. Sin; H.U. Anderson; Alan Jacobson; C.A. Mims

2006-05-01T23:59:59.000Z

169

Colloidal fouling of reverse osmosis membranes  

E-Print Network (OSTI)

the rate of fouling of reverse osmosis membranes treating32, 127-135. fouling of reverse osmosis membranes." Buros,Colloidal fouling of reverse osmosis membranes." J. Colloid

Elimelech, Menachem

1994-01-01T23:59:59.000Z

170

Composite oxygen transport membrane  

DOE Patents (OSTI)

A method of producing a composite oxygen ion membrane and a composite oxygen ion membrane in which a porous fuel oxidation layer and a dense separation layer and optionally, a porous surface exchange layer are formed on a porous support from mixtures of (Ln.sub.1-xA.sub.x).sub.wCr.sub.1-yB.sub.yO.sub.3-.delta. and a doped zirconia. In the porous fuel oxidation layer and the optional porous surface exchange layer, A is Calcium and in the dense separation layer A is not Calcium and, preferably is Strontium. Preferred materials are (La.sub.0.8Ca.sub.0.2).sub.0.95Cr.sub.0.5Mn.sub.0.5O.sub.3-.delta. for the porous fuel oxidation and optional porous surface exchange layers and (La.sub.0.8Sr.sub.0.2).sub.0.95Cr.sub.0.5Fe.sub.0.5O.sub.3-.delta. for the dense separation layer. The use of such materials allows the membrane to sintered in air and without the use of pore formers to reduce membrane manufacturing costs. The use of materials, as described herein, for forming the porous layers have application for forming any type of porous structure, such as a catalyst support.

Christie, Gervase Maxwell; Lane, Jonathan A.

2014-08-05T23:59:59.000Z

171

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect

This is the fifth quarterly report on a new study to develop a ceramic membrane/metal joint. Results of wetting experiments on commercially available Nickel based brazing alloys on perovskite surfaces are described. Additionally, experimental and numerical investigations on the strength of concentric ceramic/metal joints are presented.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2001-02-01T23:59:59.000Z

172

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect

In the present quarter, the possibility of using a more complex interfacial engineering approach to the development of reliable and stable oxygen transport perovskite ceramic membranes/metal seals is discussed. Experiments are presented and ceramic/metal interactions are characterized. Crack growth and fracture toughness of the membrane in the reducing conditions are also discussed. Future work regarding this approach is proposed are evaluated for strength and fracture in oxygen gradient conditions. Oxygen gradients are created in tubular membranes by insulating the inner surface from the reducing environment by platinum foils. Fracture in these test conditions is observed to have a gradient in trans and inter-granular fracture as opposed to pure trans-granular fracture observed in homogeneous conditions. Fracture gradients are reasoned to be due to oxygen gradient set up in the membrane, variation in stoichiometry across the thickness and due to varying decomposition of the parent perovskite. The studies are useful in predicting fracture criterion in actual reactor conditions and in understanding the initial evolution of fracture processes.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2003-01-01T23:59:59.000Z

173

Hydrogen-Selective Membrane  

DOE Patents (OSTI)

A hydrogen-selective membrane comprises a tubular porous ceramic support having a palladium metal layer deposited on an inside surface of the ceramic support. The thickness of the palladium layer is greater than about 10 .mu.m but typically less than about 20 .mu.m. The hydrogen permeation rate of the membrane is greater than about 1.0 moles/m.sup.2.s at a temperature of greater than about 500.degree. C. and a transmembrane pressure difference of about 1,500 kPa. Moreover, the hydrogen-to-nitrogen selectivity is greater than about 600 at a temperature of greater than about 500.degree. C. and a transmembrane pressure of about 700 kPa. Hydrogen can be separated from a mixture of gases using the membrane. The method may include the step of heating the mixture of gases to a temperature of greater than about 400.degree. C. and less than about 1000.degree. C. before the step of flowing the mixture of gases past the membrane. The mixture of gases may include ammonia. The ammonia typically is decomposed to provide nitrogen and hydrogen using a catalyst such as nickel. The catalyst may be placed inside the tubular ceramic support. The mixture of gases may be supplied by an industrial process such as the mixture of exhaust gases from the IGCC process.

Collins, John P. (Boulder, CO); Way, J. Douglas (Boulder, CO)

1995-09-19T23:59:59.000Z

174

Hydrogen-selective membrane  

DOE Patents (OSTI)

A hydrogen-selective membrane comprises a tubular porous ceramic support having a palladium metal layer deposited on an inside surface of the ceramic support. The thickness of the palladium layer is greater than about 10 {micro}m but typically less than about 20 {micro}m. The hydrogen permeation rate of the membrane is greater than about 1.0 moles/m{sup 2} s at a temperature of greater than about 500 C and a transmembrane pressure difference of about 1,500 kPa. Moreover, the hydrogen-to-nitrogen selectivity is greater than about 600 at a temperature of greater than about 500 C and a transmembrane pressure of about 700 kPa. Hydrogen can be separated from a mixture of gases using the membrane. The method may include the step of heating the mixture of gases to a temperature of greater than about 400 C and less than about 1000 C before the step of flowing the mixture of gases past the membrane. The mixture of gases may include ammonia. The ammonia typically is decomposed to provide nitrogen and hydrogen using a catalyst such as nickel. The catalyst may be placed inside the tubular ceramic support. The mixture of gases may be supplied by an industrial process such as the mixture of exhaust gases from the IGCC process. 9 figs.

Collins, J.P.; Way, J.D.

1997-07-29T23:59:59.000Z

175

Hydrogen-selective membrane  

DOE Patents (OSTI)

A hydrogen-selective membrane comprises a tubular porous ceramic support having a palladium metal layer deposited on an inside surface of the ceramic support. The thickness of the palladium layer is greater than about 10 {micro}m but typically less than about 20 {micro}m. The hydrogen permeation rate of the membrane is greater than about 1.0 moles/m{sup 2}s at a temperature of greater than about 500 C and a transmembrane pressure difference of about 1,500 kPa. Moreover, the hydrogen-to-nitrogen selectivity is greater than about 600 at a temperature of greater than about 500 C and a transmembrane pressure of about 700 kPa. Hydrogen can be separated from a mixture of gases using the membrane. The method may include the step of heating the mixture of gases to a temperature of greater than about 400 C and less than about 1000 C before the step of flowing the mixture of gases past the membrane. The mixture of gases may include ammonia. The ammonia typically is decomposed to provide nitrogen and hydrogen using a catalyst such as nickel. The catalyst may be placed inside the tubular ceramic support. The mixture of gases may be supplied by an industrial process such as the mixture of exhaust gases from the IGCC process. 9 figs.

Collins, J.P.; Way, J.D.

1995-09-19T23:59:59.000Z

176

Membrane Scientist Los Angeles, CA  

E-Print Network (OSTI)

and working hands on to ensure quality and commercial viability of reverse osmosis products including hand cast and commercial reverse osmosis membrane testing and synthesis, prototype membrane testing and new

Alpay, S. Pamir

177

Sunnyside Technologies Inc | Open Energy Information  

Open Energy Info (EERE)

Technologies Inc Technologies Inc Jump to: navigation, search Name Sunnyside Technologies, Inc Place Minneapolis, Minnesota Zip 55413 Sector Carbon, Hydro, Hydrogen Product Technology firm developing advanced materials and nanotechnologies including carbon nanofiber reinforced composite fabrication, polymer membranes, thin film deposition, inorganic membranes, low-cost hydrogen and single crystal growth. References Sunnyside Technologies, Inc[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Sunnyside Technologies, Inc is a company located in Minneapolis, Minnesota . References ↑ "Sunnyside Technologies, Inc" Retrieved from "http://en.openei.org/w/index.php?title=Sunnyside_Technologies_Inc&oldid=351815"

178

Automotive Perspective on Membrane Evaluation  

Energy.gov (U.S. Department of Energy (DOE))

Presentation at the 2008 High Temperature Membrane Working Group Meeting held June 9, 2008, in Washington, DC

179

Cu-Pd Hydrogen Separation Membranes with Reduced Palladium Content and Improved Performance  

NLE Websites -- All DOE Office Websites (Extended Search)

Cu-Pd Hydrogen Separation Membranes with Reduced Cu-Pd Hydrogen Separation Membranes with Reduced Palladium Content and Improved Performance Opportunity This patent-pending technology, "Cu-Pd Hydrogen Separation Membranes with Reduced Palladium Content and Improved Performance," consists of copper-palladium alloy compositions for hydrogen separation membranes that use less palladium and have a potential increase in hydrogen permeability and resistance to sulfur degradation compared to currently available copper-palladium membranes. This technology is available for licensing and/or further collaborative research with the U.S. Department of Energy's National Energy Technology Laboratory. Overview NETL is working to help produce and deliver hydrogen from fossil fuels including coal in commercially applicable and environmentally

180

Summary - Caustic Recovery Technology  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Caustic Recovery Technology Caustic Recovery Technology ETR Report Date: July 2007 ETR-7 United States Department of Energy Office of Environmental Management (DOE-EM) External Technical Review of Caustic Recovery Technology Why DOE-EM Did This Review The Department of Energy (DOE) Environmental Management Office (EM-21) has been developing caustic recovery technology for application to the Hanford Waste Treatment Plant (WTP) to reduce the amount of Low Activity Waste (LAW) vitrified. Recycle of sodium hydroxide with an efficient caustic recovery process could reduce the amount of waste glass produced by greater than 30%. The Ceramatec Sodium (Na), Super fast Ionic CONductors (NaSICON) membrane has shown promise for directly producing 50% caustic with high sodium selectivity. The external review

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181

LOW-PRESSURE MEMBRANE CONTACTORS FOR CARBON DIOXIDE CAPTURE  

SciTech Connect

This final technical progress report describes work conducted by Membrane Technology and Research, Inc. (MTR) for the Department of Energy (DOE NETL) on development of low-pressure membrane contactors for carbon dioxide (CO2) capture from power plant flue gas (award number DE-FE0007553). The work was conducted from October 1, 2011 through September 30, 2014. The overall goal of this three-year project was to build and operate a prototype 500 m2 low-pressure sweep membrane module specifically designed to separate CO2 from coal-fired power plant flue gas. MTR was assisted in this project by a research group at the University of Toledo, which contributed to the computational fluid dynamics (CFD) analysis of module design and process simulation. This report details the work conducted to develop a new type of membrane contactor specifically designed for the high-gas-flow, low-pressure, countercurrent sweep operation required for affordable membrane-based CO2 capture at coal power plants. Work for this project included module development and testing, design and assembly of a large membrane module test unit at MTR, CFD comparative analysis of cross-flow, countercurrent, and novel partial-countercurrent sweep membrane module designs, CFD analysis of membrane spacers, design and fabrication of a 500 m2 membrane module skid for field tests, a detailed performance and cost analysis of the MTR CO2 capture process with low-pressure sweep modules, and a process design analysis of a membrane-hybrid separation process for CO2 removal from coal-fired flue gas. Key results for each major task are discussed in the report.

Baker, Richard; Kniep, Jay; Hao, Pingjiao; Chan, Chi Cheng; Nguyen, Vincent; Huang, Ivy; Amo, Karl; Freeman, Brice; Fulton, Don; Ly, Jennifer; Lipscomb, Glenn; Lou, Yuecun; Gogar, Ravikumar

2014-09-30T23:59:59.000Z

182

OXIDATIVE COUPLING OF METHANE USING INORGANIC MEMBRANE REACTORS  

SciTech Connect

The objective of this research is to study the oxidative coupling of methane in catalytic inorganic membrane reactors. A specific target is to achieve conversion of methane to C{sub 2} hydrocarbons at very high selectivity and higher yields than in conventional non-porous, co-feed, fixed bed reactors by controlling the oxygen supply through the membrane. A membrane reactor has the advantage of precisely controlling the rate of delivery of oxygen to the catalyst. This facility permits balancing the rate of oxidation and reduction of the catalyst. In addition, membrane reactors minimize the concentration of gas phase oxygen thus reducing non selective gas phase reactions, which are believed to be a main route for the formation of CO{sub x} products. Such gas phase reactions are a cause of decreased selectivity in the oxidative coupling of methane in conventional flow reactors. Membrane reactors could also produce higher product yields by providing better distribution of the reactant gases over the catalyst than the conventional plug flow reactors. Membrane reactor technology also offers the potential for modifying the membranes both to improve catalytic properties as well as to regulate the rate of the permeation/diffusion of reactants through the membrane to minimize by-product generation. Other benefits also exist with membrane reactors, such as the mitigation of thermal hot-spots for highly exothermic reactions such as the oxidative coupling of methane. The application of catalytically active inorganic membranes has potential for drastically increasing the yield of reactions which are currently limited by either thermodynamic equilibria, product inhibition, or kinetic selectivity.

Dr. Y.H. Ma; Dr. W.R. Moser; Dr. A.G. Dixon; Dr. A.M. Ramachandra; Dr. Y. Lu; C. Binkerd

1998-04-01T23:59:59.000Z

183

Robust Polymer Composite Membranes for Hydrogen Separation |...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Robust Polymer Composite Membranes for Hydrogen Separation Robust Polymer Composite Membranes for Hydrogen Separation polymercompositemembranes.pdf More Documents & Publications...

184

Characterization and applications of nanofiltration membranes: State of the art  

Science Journals Connector (OSTI)

There is a voluminous literature on the determination of structural and electrical properties of a nanofiltration (NF) membrane and its separation performance. Theories used to characterize a NF membrane usually include: the non-equilibrium thermodynamic model, the pore model, the TMS model, the electrostatic and steric-hindrance pore model, and the semi-emprical model. In the article, we briefly trace the origins or the general ideas of the above-mentioned theories. From there, recent researches on the evaluation of membrane structural and electrical properties are reviewed. We then turn to research on the separation performance of a NF membrane for single component solutions of inorganic electrolytes, neutral organic solutions, and mixture solution of inorganic electrolytes or that of electrolyte and neutral organic solute. Finally, we conclude with suggestions as to the role of models in the contributions to the application of the NF technology in product separation processes.

Xiao-Lin Wang; Wei-Juan Shang; Da-Xin Wang; Ling Wu; Cong-Hui Tu

2009-01-01T23:59:59.000Z

185

Tunable water desalination across Graphene Oxide Framework membranes  

SciTech Connect

The performance of graphene oxide framework (GOF) membranes for water desalination is assessed using classical molecular dynamics (MD) simulations. The coupling between water permeability and salt rejection GOF membranes is studied as a function of linker concentration n, thickness h and applied pressure DP. The simulations reveal that water permeability in GOF-(n,h) membranes can be tuned from 5 (n = 32 and h = 6.5 nm) to 400 L/cm2/day/MPa (n = 64 and h = 2.5 nm) and follows the law Cnh an . For a given pore size (n = 16 or 32), water permeability of GOF membranes increases when the pore spacing decreases, whereas for a given pore spacing (n = 32 or 64), water permeability increases by up to two orders of magnitude when the pore size increases. Furthermore, for linker concentrations n 32, the high water permeability corresponds to a 100% salt rejection, elevating this type of GOF membrane as an ideal candidate for water desalination. Compared to experimental performance of reverse osmosis membranes, our calculations suggest that under the same conditions of applied pressure and characteristics of membranes (DP 10 MPa and h 100 nm), one can expect a perfect salt rejection coupled to a water permeability two orders of magnitude higher than existing technologies, i.e., from a few cL/cm2/day/MPa to a few L/cm2/day/MPa.

Nicolai, Adrien [Rensselaer Polytechnic Institute (RPI)] [Rensselaer Polytechnic Institute (RPI); Sumpter, Bobby G [ORNL] [ORNL; Meunier, V. [Rensselaer Polytechnic Institute (RPI)] [Rensselaer Polytechnic Institute (RPI)

2014-01-01T23:59:59.000Z

186

Chapter 11 - Nanofluidic Carbon Nanotube Membranes: Applications for Water Purification and Desalination  

Science Journals Connector (OSTI)

This chapter presents a brief overview of the basic physical processes that govern the structure and transport of water inside CNT pores, basic properties that make nanotube pore technologies attractive for water purification and desalination, the fabrication approaches for producing CNT membranes, and the experimental observations of water transport and ion exclusion properties in CNT membranes.

Olgica Bakajin; Aleksandr Noy; Francesco Fornasiero; Costas P. Grigoropoulos; Jason K. Holt; Jung Bin In; Sangil Kim; Hyung Gyu Park

2014-01-01T23:59:59.000Z

187

Thin-Film Composite Pressure Retarded Osmosis Membranes for Sustainable Power Generation from Salinity Gradients  

Science Journals Connector (OSTI)

Thin-Film Composite Pressure Retarded Osmosis Membranes for Sustainable Power Generation from Salinity Gradients ... Pressure retarded osmosis has the potential to produce renewable energy from natural salinity gradients. ... Pressure retarded osmosis (PRO) and reverse electrodialysis (RED) are emerging membrane-based technologies that can convert chemical energy in salinity gradients to useful work. ...

Ngai Yin Yip; Alberto Tiraferri; William A. Phillip; Jessica D. Schiffman; Laura A. Hoover; Yu Chang Kim; Menachem Elimelech

2011-04-14T23:59:59.000Z

188

A versatile route to modify polyethersulfone membranes by chemical reduction of aryldiazonium salts  

E-Print Network (OSTI)

. Introduction The widespread technological and economical importance of membrane processes in various fields such as food industry, desalination, fuel cells, water treatment and chemistry, has been the driving force. Because of economical stakes, the detailed composition of commercial membranes is generally not provided

Paris-Sud XI, Université de

189

CO2 Capture Membrane Process for Power Plant Flue Gas  

NLE Websites -- All DOE Office Websites (Extended Search)

CO CO 2 Capture Membrane Process for Power Plant Flue Gas Background The U.S. Department of Energy's (DOE) Existing Plants, Emissions & Capture (EPEC) Program is performing research to develop advanced technologies focusing on carbon dioxide (CO 2 ) emissions control for existing pulverized coal-fired plants. This new focus on post-combustion and oxy-combustion CO 2 emissions control technology, CO 2 compression, and beneficial reuse is in response to the priority for advanced

190

Oxygen Transport Ceramic Membranes  

SciTech Connect

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. Thermogravimetric analysis (TGA) was carried out on La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} to investigate oxygen deficiency ({delta}) of the sample. The TGA was performed in a controlled atmosphere using oxygen, argon, carbon monoxide and carbon dioxide with adjustable gas flow rates. In this experiment, the weight loss and gain of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} was directly measured by TGA. The weight change of the sample was evaluated at between 600 and 1250 C in air or 1000 C as a function of oxygen partial pressure. The oxygen deficiencies calculated from TGA data as a function of oxygen activity and temperature will be estimated and compared with that from neutron diffraction measurement in air. The LSFT and LSFT/CGO membranes were fabricated from the powder obtained from Praxair Specialty Ceramics. The sintered membranes were subjected to microstructure analysis and hardness analysis. The LSFT membrane is composed of fine grains with two kinds of grain morphology. The grain size distribution was characterized using image analysis. In LSFT/CGO membrane a lot of grain pullout was observed from the less dense, porous phase. The hardness of the LSFT and dual phase membranes were studied at various loads. The hardness values obtained from the cross section of the membranes were also compared to that of the values obtained from the surface. An electrochemical cell has been designed and built for measurements of the Seebeck coefficient as a function of temperature and pressure. Measurements on La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} as a function of temperature an oxygen partial pressure are reported. Further analysis of the dilatometry data obtained previously is presented. A series of isotope transients under air separation mode (small gradient) were completed on the membrane of LSCrF-2828 at 900 C. Low pO{sub 2} atmospheres based on with CO-CO{sub 2} mixtures have also been admitted to the delivery side of the LSCrF-2828 membrane to produce the gradients which exist under syngas generation conditions. The CO-CO{sub 2} mixtures have normal isotopic {sup 18}O abundances. The evolution of {sup 18}O on the delivery side in these experiments after an {sup 18}O pulse on the air side reveals a wealth of information about the oxygen transport processes.

S. Bandopadhyay; N. Nagabhushana; T. Nithyanantham; X.-D Zhou; Y-W. Sin; H.U. Anderson; Alan Jacobson; C.A. Mims

2005-02-01T23:59:59.000Z

191

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect

In the present quarter, experiments are presented on ceramic/metal interactions of Zirconia/Ni-B-Si system and with a thin Ti coating deposited on zirconia surface. Processing of perovskites of LSC, LSF and LSCF composition for evaluation of mechanical properties as a function of environment are begun. The studies are to be in parallel with LSFCO composition to characterize the segregation of cations and slow crack growth in environmental conditions. La{sub 1-x}Sr{sub x}FeO{sub 3-d} has also been characterized for paramagnetic ordering at room temperature and the evolution of magnetic moments as a function of temperature are investigated. Investigation on the thermodynamic properties of the membrane materials are continued to develop a complete model for the membrane transport.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2003-01-01T23:59:59.000Z

192

Solid-state membrane module  

DOE Patents (OSTI)

Solid-state membrane modules comprising at least one membrane unit, where the membrane unit has a dense mixed conducting oxide layer, and at least one conduit or manifold wherein the conduit or manifold comprises a dense layer and at least one of a porous layer and a slotted layer contiguous with the dense layer. The solid-state membrane modules may be used to carry out a variety of processes including the separating of any ionizable component from a feedstream wherein such ionizable component is capable of being transported through a dense mixed conducting oxide layer of the membrane units making up the membrane modules. For ease of construction, the membrane units may be planar.

Gordon, John Howard (Salt Lake City, UT); Taylor, Dale M. (Murray, UT)

2011-06-07T23:59:59.000Z

193

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect

This is the fourth quarterly report on a new study to develop a ceramic membrane/metal joint. The first experiments using the La-Sr-Fe-O ceramic are reported. Some of the analysis performed on the samples obtained are commented upon. A set of experiments to characterize the mechanical strength and thermal fatigue properties of the joints has been designed and begun. Finite element models of joints used to model residual stresses are described.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2000-07-01T23:59:59.000Z

194

Numerical simulations of ion transport membrane oxy-fuel reactors for CO? capture applications  

E-Print Network (OSTI)

Numerical simulations were performed to investigate the key features of oxygen permeation and hydrocarbon conversion in ion transport membrane (ITM) reactors. ITM reactors have been suggested as a novel technology to enable ...

Hong, Jongsup

2013-01-01T23:59:59.000Z

195

Composite Membranes for CO2 Capture: High Performance Metal Organic Frameworks/Polymer Composite Membranes for Carbon Dioxide Capture  

SciTech Connect

IMPACCT Project: A team of six faculty members at Georgia Tech are developing an enhanced membrane by fitting metal organic frameworks, compounds that show great promise for improved carbon capture, into hollow fiber membranes. This new material would be highly efficient at removing CO2 from the flue gas produced at coal-fired power plants. The team is analyzing thousands of metal organic frameworks to identify those that are most suitable for carbon capture based both on their ability to allow coal exhaust to pass easily through them and their ability to select CO2 from that exhaust for capture and storage. The most suitable frameworks would be inserted into the walls of the hollow fiber membranes, making the technology readily scalable due to their high surface area. This composite membrane would be highly stable, withstanding the harsh gas environment found in coal exhaust.

None

2010-07-01T23:59:59.000Z

196

Slipstream Testing of a Membrane CO2 Capture Process for Existing Coal-Fired Power Plants  

NLE Websites -- All DOE Office Websites (Extended Search)

Testing of a Membrane CO Testing of a Membrane CO 2 Capture Process for Existing Coal-Fired Power Plants Background The mission of the U.S. Department of Energy/National Energy Technology Laboratory (DOE/NETL) Existing Plants, Emissions & Capture (EPEC) Research & Development (R&D) Program is to develop innovative environmental control technologies to enable full use of the nation's vast coal reserves, while at the same time allowing the current fleet of

197

Membrane Process to Capture CO2 from Power Plant Flue Gas  

NLE Websites -- All DOE Office Websites (Extended Search)

Membrane Process to Capture CO Membrane Process to Capture CO 2 from Power Plant Flue Gas Background The U.S. Department of Energy's (DOE) Innovations for Existing Plants (IEP) Program is performing research to develop advanced technologies focusing on carbon dioxide (CO 2 ) emissions control for existing pulverized coal-fired plants. This new focus on post-combustion and oxy-combustion CO 2 emissions control technology, CO 2 compression, and beneficial reuse is in response to the priority for advanced

198

Technology Transfer: Available Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

test test Please refer to the list of technologies below for licensing and research collaboration availability. If you can't find the technology you're interested in, please contact us at TTD@lbl.gov. Energy ENERGY EFFICIENT TECHNOLOGIES Aerosol Sealing Aerosol Remote Sealing System Clog-free Atomizing and Spray Drying Nozzle Air-stable Nanomaterials for Efficient OLEDs Solvent Processed Nanotube Composites OLEDS with Air-stable Structured Electrodes APIs for Online Energy Saving Tools: Home Energy Saver and EnergyIQ Carbon Dioxide Capture at a Reduced Cost Dynamic Solar Glare Blocking System Electrochromic Device Controlled by Sunlight Electrochromic Windows with Multiple-Cavity Optical Bandpass Filter Electrochromic Window Technology Portfolio Universal Electrochromic Smart Window Coating

199

Membranes, methods of making membranes, and methods of separating gases using membranes  

DOE Patents (OSTI)

Membranes, methods of making membranes, and methods of separating gases using membranes are provided. The membranes can include at least one hydrophilic polymer, at least one cross-linking agent, at least one base, and at least one amino compound. The methods of separating gases using membranes can include contacting a gas stream containing at least one of CO.sub.2, H.sub.2S, and HCl with one side of a nonporous and at least one of CO.sub.2, H.sub.2S, and HCl selectively permeable membrane such that at least one of CO.sub.2, H.sub.2S, and HCl is selectively transported through the membrane.

Ho, W. S. Winston

2012-10-02T23:59:59.000Z

200

Final Report - Membranes and MEA's for Dry, Hot Operating Conditions  

SciTech Connect

The focus of this program was to develop a new Proton Exchange Membrane (PEM) which can operate under hotter, dryer conditions than the state of the art membranes today and integrate it into a Membrane Electrode Assembly (MEA). These MEA's should meet the performance and durability requirements outlined in the solicitation, operating under low humidification conditions and at temperatures ranging from -20���ºC to 120���ºC, to meet 2010 DOE technical targets for membranes. This membrane should operate under low humidification conditions and at temperatures ranging from -20���ºC to 120���ºC in order to meet DOE HFCIT 2010 commercialization targets for automotive fuel cells. Membranes developed in this program may also have improved durability and performance characteristics making them useful in stationary fuel cell applications. The new membranes, and the MEA�¢����s comprising them, should be manufacturable at high volumes and at costs which can meet industry and DOE targets. This work included: A) Studies to better understand factors controlling proton transport within the electrolyte membrane, mechanisms of polymer degradation (in situ and ex situ) and membrane durability in an MEA; B) Development of new polymers with increased proton conductivity over the range of temperatures from -20���ºC to 120���ºC and at lower levels of humidification and with improved chemical and mechanical stability; C) Development of new membrane additives for increased durability and conductivity under these dry conditions; D) Integration of these new materials into membranes and membranes into MEA�¢����s, including catalyst and gas diffusion layer selection and integration; E) Verification that these materials can be made using processes which are scalable to commercial volumes using cost effective methods; F) MEA testing in single cells using realistic automotive testing protocols. This project addresses technical barriers A (Durability) and C (Performance) from the Fuel Cells section of the 2005 Hydrogen, Fuel Cells and Infrastructure Technologies Program Multi-Year R&D Plan. In the course of this four-year program we developed a new PEM with improved proton conductivity, chemical stability and mechanical stability. We incorporated this new membrane into MEAs and evaluated performance and durability.

Hamrock, Steven J.

2011-06-30T23:59:59.000Z

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

A Novel Anaerobic Electrochemical Membrane Bioreactor (AnEMBR) with Conductive Hollow-fiber Membrane for Treatment of Low-  

E-Print Network (OSTI)

-6 By excluding oxygen from the system and applying an additional voltage to the circuit, hydrogen is evolved and Engineering Division, Water Desalination and Reuse Center, Thuwal 23955-6900, Saudi Arabia King Abdullah University of Science and Technology, Advanced Membranes and Porous Materials Research Center, Thuwal 23955

202

NETL: Hydrogen Selective Exfoliated Zeolite Membranes  

NLE Websites -- All DOE Office Websites (Extended Search)

Designing and Validating Ternay Pd Alloys for Optimum Sulfur/Carbon Resistance Designing and Validating Ternay Pd Alloys for Optimum Sulfur/Carbon Resistance Project No.: DE-FE0001181 Gas Permeation Cell and Test Stand Pall Corporation is developing an economically-viable hydrogen/carbon dioxide (H2/CO2) separation membrane system that would allow efficient capture of CO2 at high temperature and pressure from gasified coal in the presence of typical contaminants. Goals for the project include creating an advanced palladium alloy for optimum hydrogen separation performance using combinatorial material methods for high-throughput screening, testing, and characterization and demonstrating durability by long term testing of a pilot membrane module at a commercial coal gasification facility. The advantages of this technology are reduction of CO2 compression costs, lack of need for both upstream and downstream heat exchange and complex heat integration, and the potential for integration with water gas shift in a single compact membrane reactor system.

203

Oxygen Transport Ceramic Membranes  

SciTech Connect

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. In the previous research, the reference point of oxygen occupancy was determined and verified. In the current research, the oxygen occupancy was investigated at 1200 C as a function of oxygen activity and compared with that at 1000 C. The cause of bumps at about 200 C was also investigated by using different heating and cooling rates during TGA. The fracture toughness of LSFT and dual phase membranes at room temperature is an important mechanical property. Vicker's indentation method was used to evaluate this toughness. Through this technique, a K{sub Ic} (Mode-I Fracture Toughness) value is attained by means of semi-empirical correlations between the indentation load and the length of the cracks emanating from the corresponding Vickers indentation impression. In the present investigation, crack propagation behavior was extensively analyzed in order to understand the strengthening mechanisms involved in the non-transforming La based ceramic composites. Cracks were generated using Vicker's indenter and used to identify and evaluate the toughening mechanisms involved. Preliminary results of an electron microscopy study of the origin of the slow kinetics on reduction of ferrites have been obtained. The slow kinetics appear to be related to a non-equilibrium reduction pathway that initially results in the formation of iron particles. At long times, equilibrium can be reestablished with recovery of the perovskite phase. Modeling of the isotopic transients on operating membranes (LSCrF-2828 at 900 C) and a ''frozen'' isotope profile have been analyzed in conjunction with a 1-D model to reveal the gradient in oxygen diffusivity through the membrane under conditions of high chemical gradients.

S. Bandopadhyay; T. Nithyanantham; X.-D Zhou; Y-W. Sin; H.U. Anderson; Alan Jacobson; C.A. Mims

2005-08-01T23:59:59.000Z

204

Oxygen Transport Ceramic Membranes  

SciTech Connect

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. The in situ electrical conductivity and Seebeck coefficient measurements were made on LSFT at 1000 and 1200 C over the oxygen activity range from air to 10{sup -15} atm. The electrical conductivity measurements exhibited a p to n type transition at an oxygen activity of 1 x 10{sup -10} at 1000 C and 1 x 10{sup -6} at 1200 C. Thermogravimetric studies were also carried out over the same oxygen activities and temperatures. Based on the results of these measurements, the chemical and mechanical stability range of LSFT were determined and defect structure was established. The studies on the fracture toughness of the LSFT and dual phase membranes exposed to air and N{sub 2} at 1000 C was done and the XRD and SEM analysis of the specimens were carried out to understand the structural and microstructural changes. The membranes that are exposed to high temperatures at an inert and a reactive atmosphere undergo many structural and chemical changes which affect the mechanical properties. A complete transformation of fracture behavior was observed in the N{sub 2} treated LSFT samples. Further results to investigate the origin of the slow kinetics on reduction of ferrites have been obtained. The slow kinetics appear to be related to a non-equilibrium reduction pathway that initially results in the formation of iron particles. At long times, equilibrium can be reestablished with recovery of the perovskite phase. Recent results on transient kinetic data are presented. The 2-D modeling of oxygen movement has been undertaken in order to fit isotope data. The model is used to study ''frozen'' profiles in patterned or composite membranes.

S. Bandopadhyay; T. Nithyanantham; X.-D Zhou; Y-W. Sin; H.U. Anderson; Alan Jacobson; C.A. Mims

2005-02-01T23:59:59.000Z

205

Oxygen Transport Ceramic Membranes  

SciTech Connect

The present quarterly report describes some of the initial studies on newer compositions and also includes newer approaches to address various materials issues such as in metal-ceramic sealing. The current quarter's research has also focused on developing a comprehensive reliability model for predicting the structural behavior of the membranes in realistic conditions. In parallel to industry provided compositions, models membranes have been evaluated in varying environment. Of importance is the behavior of flaws and generation of new flaws aiding in fracture. Fracture mechanics parameters such as crack tip stresses are generated to characterize the influence of environment. Room temperature slow crack growth studies have also been initiated in industry provided compositions. The electrical conductivity and defect chemistry of an A site deficient compound (La{sub 0.55}Sr{sub 0.35}FeO{sub 3}) was studied. A higher conductivity was observed for La{sub 0.55}Sr{sub 0.35}FeO{sub 3} than that of La{sub 0.60}Sr{sub 0.40}FeO{sub 3} and La{sub 0.80}Sr{sub 0.20}FeO{sub 3}. Defect chemistry analysis showed that it was primarily contributed by a higher carrier concentration in La{sub 0.55}Sr{sub 0.35}FeO{sub 3}. Moreover, the ability for oxygen vacancy generation is much higher in La{sub 0.55}Sr{sub 0.35}FeO{sub 3} as well, which indicates a lower bonding strength between Fe-O and a possible higher catalytic activity for La{sub 0.55}Sr{sub 0.35}FeO{sub 3}. The program continued to investigate the thermodynamic properties (stability and phase separation behavior) and total conductivity of prototype membrane materials. The data are needed together with the kinetic information to develop a complete model for the membrane transport. Previous report listed initial measurements on a sample of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-x} prepared in-house by Praxair. Subsequently, a second sample of powder from a larger batch of sample were characterized and compared with the results from the previous batch.

S. Bandopadhyay; N. Nagabhushana; Thomas W. Eagar; Harold R. Larson; Raymundo Arroyave; X.-D Zhou; Y.-W. Shin; H.U. Anderson; Nigel Browning; Alan Jacobson; C.A. Mims

2003-11-01T23:59:59.000Z

206

Oxygen Transport Ceramic Membranes  

SciTech Connect

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. In this report, in situ neutron diffraction was used to characterize the chemical and structural properties of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} (here after as L2SF55T) specimen, which was subject to measurements of neutron diffraction from room temperature to 900 C. It was found that space group of R3c yielded a better refinement than a cubic structure of Pm3m. Oxygen occupancy was nearly 3 in the region from room temperature to 700 C, above which the occupancy decreased due to oxygen loss. Dense OTM bars provided by Praxair were loaded to fracture at varying stress rates. Studies were done at room temperature in air and at 1000 C in a specified environment to evaluate slow crack growth behavior. The X-Ray data and fracture mechanisms points to non-equilibrium decomposition of the LSFCO OTM membrane. The non-equilibrium conditions could probably be due to the nature of the applied stress field (stressing rates) and leads to transition in crystal structures and increased kinetics of decomposition. The formations of a Brownmillerite or Sr2Fe2O5 type structures, which are orthorhombic are attributed to the ordering of oxygen vacancies. The cubic to orthorhombic transitions leads to 2.6% increase in strains and thus residual stresses generated could influence the fracture behavior of the OTM membrane. Continued investigations on the thermodynamic properties (stability and phase-separation behavior) and total conductivity of prototype membrane materials were carried out. The data are needed together with the kinetic information to develop a complete model for the membrane transport. Previously characterization, stoichiometry and conductivity measurements for samples of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} were reported. In this report, measurements of the chemical and thermal expansion as a function of temperature and p{sub O2} are described.

S. Bandopadhyay; N. Nagabhushana; X.-D Zhou; Q. Cai; J. Yang; W.B. Yelon; W.J. James; H.U. Anderson; Alan Jacobson; C.A. Mims

2004-05-01T23:59:59.000Z

207

Gas Separation Using Membranes  

E-Print Network (OSTI)

.133.132, May 12. 1964. 45. Kesting, R. E., Synthetic Polymeric Membranes. McGraw-Hill, N. Y. (1971). 46. Strathmann, H., Kock. K., Amar. P., and Baker, R. W., Desalination 16, 179 (1975). 47. Strathmann, H., Schel""ble, P?? and Baker. R. W?? J. Appl...?? Desalination 21. 241 (1977). 51. Cohen. C?? Tanny, G. B?? and Prager, S., J. Polym. Sci.. Polym. Phys. Ed. 17, 477 (1979). 52. Tanny, G. B., J. App], Polym. ~i. 1!. 2149 (1974). 53. Cabasso, I?? Klein, E?? and smith. J. K., "Research and Development...

Koros, W. J.; Paul, D. R.

1984-01-01T23:59:59.000Z

208

Microsoft PowerPoint - Nano Sep Membrane for H2 Flux brief.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

Membrane separations are a key enabling technology for energy conversion devices. Ionic transport Membrane separations are a key enabling technology for energy conversion devices. Ionic transport membranes must have both proton and electronic conductivity to function as hydrogen separation membranes without an external power supply. In addition, membrane materials electronic conductivity or material crystal stability should not be greatly affected by the presence of contaminant gases such as CO 2 , CO, CH 4 , and H 2 O that are associated with steam reforming/water gas shift reactions. SRNL is managed and operated for the U.S. Department of Energy by Savannah River Nuclear Solutions, LLC glance at a  improved electronic conduction  suitable for hydrogen separation  separates contaminant gases  patent pending Background SRNL-L5210-2011-00005

209

DOE Approves Field Test for Promising Carbon Capture Technology |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Approves Field Test for Promising Carbon Capture Technology Approves Field Test for Promising Carbon Capture Technology DOE Approves Field Test for Promising Carbon Capture Technology November 20, 2012 - 12:00pm Addthis Washington, DC - A promising post combustion membrane technology that can separate and capture 90 percent of the carbon dioxide (CO2) from a pulverized coal plant has been successfully demonstrated and received Department of Energy (DOE) approval to advance to a larger-scale field test. In an $18.75 million project funded by the American Recovery and Reinvestment Act of 2009, Membrane Technology and Research Inc. (MTR) and its partners tested the Polaris™ membrane system, which uses a CO2-selective polymeric membrane (micro-porous films which act as semi-permeable barriers to separate two different mediums) material and

210

Technology Transfer: Available Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Please refer to the list of technologies below for licensing and research Please refer to the list of technologies below for licensing and research collaboration availability. If you can't find the technology you're interested in, please contact us at TTD@lbl.gov. Biotechnology and Medicine DIAGNOSTICS AND THERAPEUTICS CANCER CANCER PROGNOSTICS 14-3-3 Sigma as a Biomarker of Basal Breast Cancer ANXA9: A Therapeutic Target and Predictive Marker for Early Detection of Aggressive Breast Cancer Biomarkers for Predicting Breast Cancer Patient Response to PARP Inhibitors Breast Cancer Recurrence Risk Analysis Using Selected Gene Expression Comprehensive Prognostic Markers and Therapeutic Targets for Drug-Resistant Breast Cancers Diagnostic Test to Personalize Therapy Using Platinum-based Anticancer Drugs Early Detection of Metastatic Cancer Progenitor Cells

211

Chapter 2 - Water Electrolysis Technologies  

Science Journals Connector (OSTI)

Abstract The purpose of this chapter is to provide an overview of the different water electrolysis technologies. In the introduction section, the general characteristics of water electrolysis (thermodynamics, kinetics, efficiency) are described. Main electrolysis technologies used to produce hydrogen and oxygen of electrolytic grade are then described in the following sections. Alkaline water electrolysis is described in Section 2.2, proton-exchange membrane water electrolysis in Section 2.3 and high-temperature water electrolysis in Section 2.4. For each technology, state-of-the-art performances are analyzed, limitations are identified and some perspectives are discussed.

Pierre Millet; Sergey Grigoriev

2013-01-01T23:59:59.000Z

212

Technology Transfer: Available Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Software and Information Technologies Software and Information Technologies Algorithm for Correcting Detector Nonlinearites Chatelet: More Accurate Modeling for Oil, Gas or Geothermal Well Production Collective Memory Transfers for Multi-Core Processors Energy Efficiency Software EnergyPlus:Energy Simulation Software for Buildings Tools, Guides and Software to Support the Design and Operation of Energy Efficient Buildings Flexible Bandwidth Reservations for Data Transfer Genomic and Proteomic Software LABELIT - Software for Macromolecular Diffraction Data Processing PHENIX - Software for Computational Crystallography Vista/AVID: Visualization and Allignment Software for Comparative Genomics Geophysical Software Accurate Identification, Imaging, and Monitoring of Fluid Saturated Underground Reservoirs

213

Oxygen Transport Ceramic Membranes  

SciTech Connect

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped Ti-substituted perovskites, La{sub 0.7}Sr{sub 0.3}Mn{sub 1-x}Ti{sub x}O{sub 3}, with 0 {le} x {le} 0.20, were investigated by neutron diffraction, magnetization, electric resistivity, and magnetoresistance (MR) measurements. All samples show a rhombohedral structure (space group R3C) from 10 K to room temperature. At room temperature, the cell parameters a, c and the unit cell volume increase with increasing Ti content. However, at 10 K, the cell parameter a has a maximum value for x = 0.10, and decreases for x > 0.10, while the unit cell volume remains nearly constant for x > 0.10. The average (Mn,Ti)-O bond length increases up to x = 0.15, and the (Mn,Ti)-O-(Mn,Ti) bond angle decreases with increasing Ti content to its minimum value at x = 0.15 at room temperature. Below the Curie temperature TC, the resistance exhibits metallic behavior for the x {le} 0.05 samples. A metal (semiconductor) to insulator transition is observed for the x {ge} 0.10 samples. A peak in resistivity appears below TC for all samples, and shifts to a lower temperature as x increases. The substitution of Mn by Ti decreases the 2p-3d hybridization between O and Mn ions, reduces the bandwidth W, and increases the electron-phonon coupling. Therefore, the TC shifts to a lower temperature and the resistivity increases with increasing Ti content. A field-induced shift of the resistivity maximum occurs at x {le} 0.10 compounds. The maximum MR effect is about 70% for La{sub 0.7}Sr{sub 0.3}Mn{sub 0.8}Ti{sub 0.2}O{sub 3}. The separation of TC and the resistivity maximum temperature T{sub {rho},max} enhances the MR effect in these compounds due to the weak coupling between the magnetic ordering and the resistivity as compared with La{sub 0.7}Sr{sub 0.3}MnO{sub 3}. The bulk densities of the membranes were determined using the Archimedes method. The bulk density was 5.029 and 5.57 g/cc for LSFT and dual phase membranes, respectively. The microstructure of the dual phase membrane was analyzed using SEM. It is evident from the micrograph that the microstructure is composed of dual phases. The dense circular regions are enclosed by the less dense, continuous phase which accommodates most of the pores. The pores are normally aggregated and found clustered along the dense regions where as the dense regions do not have pores. Upon closer observation of the micrograph it is revealed that the dense region has a clear circular cleavage or crack as their boundary. The circular cleavage clearly encompasses a dense region and which consists of no pore or any flaw that is visible. The size distribution of the dense, discontinuous regions is varying from 5 to 20 {micro}m with a D{sub 50} of 15 {micro}m. The grain size distribution was estimated from the micrographs using image analysis and a unimodal distribution of grains was observed with an average grain size of 1.99 {micro}m. The chemical compositions of the membranes were analyzed using EDS analysis and no other impurities were observed. The XRD analysis was carried out for the membranes and the phase purity was confirmed. The fracture toughness of LSFT membranes at room temperature has to be calculated using the Vickers indentation method. An electrochemical cell has been designed and built for measurements of the ionic conductivity by the use of blocking electrodes. Preliminary measurements on La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} are reported. Modifications to the apparatus to improve the data quality have been completed. Electron microscopy studies of the origin of the slow kinetics on reduction of ferrites have been initiated. A series of isotope transients under air separation mode (small gradient) were completed on the membrane of LSCrF-2828 at 900 C. Low pO{sub 2} atmospheres based on with CO-CO{sub 2} mixtures have also been admitted to the delivery side of the LSCrF-2828 membrane to produce the gradient

S. Bandopadhyay; T. Nithyanantham; X.-D Zhou; Y-W. Sin; H.U. Anderson; Alan Jacobson; C.A. Mims

2005-05-01T23:59:59.000Z

214

Operation of staged membrane oxidation reactor systems  

SciTech Connect

A method of operating a multi-stage ion transport membrane oxidation system. The method comprises providing a multi-stage ion transport membrane oxidation system with at least a first membrane oxidation stage and a second membrane oxidation stage, operating the ion transport membrane oxidation system at operating conditions including a characteristic temperature of the first membrane oxidation stage and a characteristic temperature of the second membrane oxidation stage; and controlling the production capacity and/or the product quality by changing the characteristic temperature of the first membrane oxidation stage and/or changing the characteristic temperature of the second membrane oxidation stage.

Repasky, John Michael

2012-10-16T23:59:59.000Z

215

Ohio State Develops Game-Changing CO2 Capture Membranes in DOE-Funded  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ohio State Develops Game-Changing CO2 Capture Membranes in Ohio State Develops Game-Changing CO2 Capture Membranes in DOE-Funded Project Ohio State Develops Game-Changing CO2 Capture Membranes in DOE-Funded Project November 15, 2012 - 12:00pm Addthis Washington, DC - In a project funded by the U.S. Department of Energy's Office of Fossil Energy (FE), researchers at The Ohio State University have developed a groundbreaking new hybrid membrane that combines the separation performance of inorganic membranes with the cost-effectiveness of polymer membranes. The breakthrough technology has vast commercial potential for use at coal-fired power plants with carbon capture, utilization, and storage (CCUS), a key element in national efforts to mitigate climate change. Before the carbon dioxide (CO2) generated at a power plant can be securely

216

A Novel Membrane Reactor for Direct Hydrogen Production From Coal  

SciTech Connect

Gas Technology Institute has developed a novel concept of a membrane reactor closely coupled with a coal gasifier for direct extraction of hydrogen from coal-derived syngas. The objective of this project is to determine the technical and economic feasibility of this concept by screening, testing and identifying potential candidate membranes under the coal gasification conditions. The best performing membranes were selected for preliminary reactor design and cost estimate. The overall economics of hydrogen production from this new process was assessed and compared with conventional hydrogen production technologies from coal. Several proton-conducting perovskite membranes based on the formulations of BCN (BaCe{sub 0.8}Nd{sub 0.2}O{sub 3-x}), BCY (BaCe{sub 0.8}Y{sub 0.2}O{sub 3-x}), SCE (Eu-doped SrCeO{sub 3}) and SCTm (SrCe{sub 0.95}Tm{sub 0.05}O{sub 3}) were successfully tested in a new permeation unit at temperatures between 800 and 1040 C and pressures from 1 to 12 bars. The experimental data confirm that the hydrogen flux increases with increasing hydrogen partial pressure at the feed side. The highest hydrogen flux measured was 1.0 cc/min/cm{sup 2} (STP) for the SCTm membrane at 3 bars and 1040 C. The chemical stability of the perovskite membranes with respect to CO{sub 2} and H{sub 2}S can be improved by doping with Zr, as demonstrated from the TGA (Thermal Gravimetric Analysis) tests in this project. A conceptual design, using the measured hydrogen flux data and a modeling approach, for a 1000 tons-per-day (TPD) coal gasifier shows that a membrane module can be configured within a fluidized bed gasifier without a substantial increase of the gasifier dimensions. Flowsheet simulations show that the coal to hydrogen process employing the proposed membrane reactor concept can increase the hydrogen production efficiency by more than 50% compared to the conventional process. Preliminary economic analysis also shows a 30% cost reduction for the proposed membrane reactor process, assuming membrane materials meeting DOE's flux and cost target. Although this study shows that a membrane module can be configured within a fluidized bed gasifier, placing the membrane module outside the gasifier in a closely coupled way in terms of temperature and pressure can still offer the same performance advantage. This could also avoid the complicated fluid dynamics and heat transfer issues when the membrane module is installed inside the gasifier. Future work should be focused on improving the permeability and stability for the proton-conducting membranes, testing the membranes with real syngas from a gasifier and scaling up the membrane size.

Shain Doong; Estela Ong; Mike Atrosphenko; Francis Lau; Mike Roberts

2006-01-20T23:59:59.000Z

217

Reactive Membrane Barriers for Containment of Subsurface Contamination  

SciTech Connect

The overall goal of this project was to develop reactive membrane barriers--a new and flexible technique to contain and stabilize subsurface contaminants. Polymer membranes will leak once a contaminant is able to diffuse through the membrane. By incorporating a reactive material in the polymer, however, the contaminant is degraded or immobilized within the membrane. These processes increase the time for contaminants to breakthrough the barrier (i.e. the lag time) and can dramatically extend barrier lifetimes. In this work, reactive barrier membranes containing zero-valent iron (Fe{sup 0}) or crystalline silicotitanate (CST) were developed to prevent the migration of chlorinated solvents and cesium-137, respectively. These studies were complemented by the development of models quantifying the leakage/kill time of reactive membranes and describing the behavior of products produced via the reactions within the membranes. First, poly(vinyl alcohol) (PVA) membranes containing Fe{sup 0} and CST were prepared and tested. Although PVA is not useful in practical applications, it allows experiments to be performed rapidly and the results to be compared to theory. For copper ions (Cu{sup 2+}) and carbon tetrachloride, the barrier was effective, increasing the time to breakthrough over 300 times. Even better performance was expected, and the percentage of the iron used in the reaction with the contaminants was determined. For cesium, the CST laden membranes increased lag times more than 30 times, and performed better than theoretical predictions. A modified theory was developed for ion exchangers in reactive membranes to explain this result. With the PVA membranes, the effect of a groundwater matrix on barrier performance was tested. Using Hanford groundwater, the performance of Fe{sup 0} barriers decreased compared to solutions containing a pH buffer and high levels of chloride (both of which promote iron reactivity). For the CST bearing membrane, performance improved by a factor of three when groundwater was used in place of deionized water. The performance of high density polyethylene (HDPE) membranes containing Fe{sup 0} was then evaluating using carbon tetrachloride as the target contaminant. Only with a hydrophilic additive (glycerol), was the iron able to extend lag times. Lag times were increased by a factor of 15, but only 2-3% of the iron was used, likely due to formation of oxide precipitates on the iron surface, which slowed the reaction. With thicker membranes and lower carbon tetrachloride concentrations, it is expected that performance will improve. Previous models for reactive membranes were also extended. The lag time is a measurement of when the barrier is breached, but contaminants do slowly leak through prior to the lag time. Thus, two parameters, the leakage and the kill time, were developed to determine when a certain amount of pollutant has escaped (the kill time) or when a given exposure (concentration x time) occurs (the leakage). Finally, a model was developed to explain the behavior of mobile reaction products in reactive barrier membranes. Although the goal of the technology is to avoid such products, it is important to be able to predict how these products will behave. Interestingly, calculations show that for any mobile reaction products, one half of the mass will diffuse into the containment area and one half will escape, assuming that the volumes of the containment area and the surrounding environment are much larger than the barrier membrane. These parameters/models will aid in the effective design of barrier membranes.

William A. Arnold; Edward L. Cussler

2007-02-26T23:59:59.000Z

218

Durable, Low-cost, Improved Fuel Cell Membranes  

SciTech Connect

The development of low cost, durable membranes and membranes electrode assemblies (MEAs) that operate under reduced relative humidity (RH) conditions remain a critical challenge for the successful introduction of fuel cells into mass markets. It was the goal of the team lead by Arkema, Inc. to address these shortages. Thus, this project addresses the following technical barriers from the fuel cells section of the Hydrogen Fuel Cells and Infrastructure Technologies Program Multi-Year Research, Development and Demonstration Plan: (A) Durability (B) Cost Arkema’s approach consisted of using blends of polyvinylidenefluoride (PVDF) and proprietary sulfonated polyelectrolytes. In the traditional approach to polyelectrolytes for proton exchange membranes (PEM), all the required properties are “packaged” in one macromolecule. The properties of interest include proton conductivity, mechanical properties, durability, and water/gas transport. This is the case, for example, for perfluorosulfonic acid-containing (PFSA) membranes. However, the cost of these materials is high, largely due to the complexity and the number of steps involved in their synthesis. In addition, they suffer other shortcomings such as mediocre mechanical properties and insufficient durability for some applications. The strength and originality of Arkema’s approach lies in the decoupling of ion conductivity from the other requirements. Kynar® PVDF provides an exceptional combination of properties that make it ideally suited for a membrane matrix (Kynar® is a registered trademark of Arkema Inc.). It exhibits outstanding chemical resistance in highly oxidative and acidic environments. In work with a prior grant, a membrane known as M41 was developed by Arkema. M41 had many of the properties needed for a high performance PEM, but had a significant deficiency in conductivity at low RH. In the first phase of this work, the processing parameters of M41 were explored as a means to increase its proton conductivity. Optimizing the processing of M41 was found to increase its proton conductivity by almost an order of magnitude at 50% RH. Characterization of the membrane morphology with Karren More at Oak Ridge National Laboratory showed that the membrane morphology was complex. This technology platform was dubbed M43 and was used as a baseline in the majority of the work on the project. Although its performance was superior to M41, M43 still showed proton conductivity an order of magnitude lower than that of a PFSA membrane at 50% RH. The MEA performance of M43 could be increased by reducing the thickness from 1 to 0.6 mils. However, the performance of the thinner M43 still did not match that of a PFSA membrane.

Chris Roger; David Mountz; Wensheng He; Tao Zhang

2011-03-17T23:59:59.000Z

219

A NOVEL MEMBRANE REACTOR FOR DIRECT HYDROGEN PRODUCTION FROM COAL  

SciTech Connect

Gas Technology Institute is developing a novel concept of membrane reactor coupled with a gasifier for high efficiency, clean and low cost production of hydrogen from coal. The concept incorporates a hydrogen-selective membrane within a gasification reactor for direct extraction of hydrogen from coal-derived synthesis gases. The objective of this project is to determine the technical and economic feasibility of this concept by screening, testing and identifying potential candidate membranes under high temperature, high pressure, and harsh environments of the coal gasification conditions. The best performing membranes will be selected for preliminary reactor design and cost estimates. Hydrogen permeation data for several perovskite membranes BCN (BaCe{sub 0.9}Nd{sub 0.1}O{sub 3-x}), SCE (SrCe{sub 0.9}Eu{sub 0.1}O{sub 3}) and SCTm (SrCe{sub 0.95}Tm{sub 0.05}O{sub 3}) have been successfully obtained for temperatures between 800 and 950 C and pressures from 1 to 12 bar in this project. However, it is known that the cerate-based perovskite materials can react with CO{sub 2}. Therefore, the stability issue of the proton conducting perovskite materials under CO{sub 2} or H{sub 2}S environments was examined. Tests were conducted in the Thermo Gravimetric Analyzer (TGA) unit for powder and disk forms of BCN and SCE. Perovskite materials doped with zirconium (Zr) are known to be resistant to CO{sub 2}. The results from the evaluation of the chemical stability for the Zr doped perovskite membranes are presented. During this reporting period, flowsheet simulation was also performed to calculate material and energy balance based on several hydrogen production processes from coal using high temperature membrane reactor (1000 C), low temperature membrane reactor (250 C), or conventional technologies. The results show that the coal to hydrogen process employing both the high temperature and the low temperature membrane reactors can increase the hydrogen production efficiency (cold gas efficiency) by more than 50% compared to the conventional process. Using either high temperature or low temperature membrane reactor process also results in an increase of the cold gas efficiencies as well as the thermal efficiencies of the overall process.

Shain Doong; Estela Ong; Mike Atroshenko; Francis Lau; Mike Roberts

2005-07-29T23:59:59.000Z

220

Oxygen Transport Membranes  

SciTech Connect

The focus of this research was to develop new membrane materials by synthesizing different compounds and determining their defect structures, crystallographic structures and electrical properties. In addition to measuring electrical conductivity, oxygen vacancy concentration was also evaluated using thermogravimetry, Neutron diffraction and Moessbauer Spectroscopy. The reducing conditions (CO{sub 2}/CO/H{sub 2} gas mixtures with steam) as encountered in a reactor environment can be expected to have significant influence on the mechanical properties of the oxides membranes. Various La based materials with and without Ti were selected as candidate membrane materials for OTM. The maximum electrical conductivity of LSF in air as a function of temperature was achieved at < 600 C and depends on the concentration of Sr (acceptor dopant). Oxygen occupancy in LSF was estimated using Neutron diffractometry and Moessbauer Spectroscopy by measuring magnetic moment changes depending on the Fe{sup 3+} and Fe{sup 4+} ratio. After extensive studies of candidate materials, lanthanum ferrites (LSF and LSFT) were selected as the favored materials for the oxygen transport membrane (OTM). LSF is a very good material for an OTM because of its high electronic and oxygen ionic conductivity if long term stability and mechanical strength are improved. LSFT not only exhibits p-type behavior in the high oxygen activity regime, but also has n-type conduction in reducing atmospheres. Higher concentrations of oxygen vacancies in the low oxygen activity regime may improve the performance of LSFT as an OTM. The hole concentration is related to the difference in the acceptor and donor concentration by the relation p = [Sr'{sub La}]-[Ti{sm_bullet}{sub Fe}]. The chemical formulation predicts that the hole concentration is, p = 0.8-0.45 or 0.35. Experimental measurements indicated that p is about {approx} 0.35. The activation energy of conduction is 0.2 eV which implies that LSCF conducts via the small polaron conduction mechanism. Scanning transmission electron microscopy (STEM) and electron energy loss spectroscopy (EELS) were used to develop strategies to detect and characterize vacancy creation, dopant segregations and defect association in the oxygen conducting membrane material. The pO{sub 2} and temperature dependence of the conductivity, non-stoichiometry and thermal-expansion behavior of compositions with increasing complexity of substitution on the perovskite A and B sites were studied. Studies with the perovskite structure show anomalous behavior at low oxygen partial pressures (<10{sup -5} atm). The anomalies are due to non-equilibrium effects and can be avoided by using very strict criteria for the attainment of equilibrium. The slowness of the oxygen equilibration kinetics arises from two different mechanisms. In the first, a two phase region occurs between an oxygen vacancy ordered phase such as brownmillerite SrFeO{sub 2.5} and perovskite SrFeO{sub 3-x}. The slow kinetics is associated with crossing the two phase region. The width of the miscibility gap decreases with increasing temperature and consequently the effect is less pronounced at higher temperature. The preferred kinetic pathway to reduction of perovskite ferrites when the vacancy concentration corresponds to the formation of significant concentrations of Fe{sup 2+} is via the formation of a Ruddlesden-Popper (RP) phases as clearly observed in the case of La{sub 0.5}Sr{sub 0.5}FeO{sub 3-x} where LaSrFeO{sub 4} is found together with Fe. In more complex compositions, such as LSFTO, iron or iron rich phases are observed locally with no evidence for the presence of discrete RP phase. Fracture strength of tubular perovskite membranes was determined in air and in reducing atmospheric conditions. The strength of the membrane decreased with temperature and severity of reducing conditions although the strength distribution (Weibull parameter, m) was relatively unaltered. Surface and volume dominated the fracture origins and the overall fracture was purely transgranular. The dual phas

S. Bandopadhyay

2008-08-30T23:59:59.000Z

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
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221

Emerging Technologies  

Energy.gov (U.S. Department of Energy (DOE))

The Emerging Technologies (ET) Program of the Building Technologies Office (BTO) supports applied research and development (R&D) for technologies, systems, and models that contribute to building energy consumption.

222

Oxygen Transport Ceramic Membranes  

SciTech Connect

Ti doping on La{sub 1-x}Sr{sub x}FeO{sub 3-{delta}} (LSF) tends to increase the oxygen equilibration kinetics of LSF in lower oxygen activity environment because of the high valence state of Ti. However, the addition of Ti decreases the total conductivity because the acceptor ([Sr{prime}{sub La}]) is compensated by the donor ([Ti{sub Fe}{sup {sm_bullet}}]) which decreases the carrier concentration. The properties of La{sub 0.2}Sr{sub 0.8}Fe{sub 1-x}Ti{sub x}O{sub 3-{delta}} (LSFT, x = 0.45) have been experimentally and theoretically investigated to elucidate (1) the dependence of oxygen occupancy and electrochemical properties on temperature and oxygen activity by thermogravimetric analysis (TGA) and (2) the electrical conductivity and carrier concentration by Seebeck coefficient and electrical measurements. In the present study, dual phase (La{sub 0.2}Sr{sub 0.8}Fe{sub 0.6}Ti{sub 0.4}O{sub 3-{delta}}/Ce{sub 0.9}Gd{sub 0.1}O{sub 2-{delta}}) membranes have been evaluated for structural properties such as hardness, fracture toughness and flexural strength. The effect of high temperature and slightly reducing atmosphere on the structural properties of the membranes was studied. The flexural strength of the membrane decreases upon exposure to slightly reducing conditions at 1000 C. The as-received and post-fractured membranes were characterized using XRD, SEM and TG-DTA to understand the fracture mechanisms. Changes in structural properties of the composite were sought to be correlated with the physiochemical features of the two-phases. We have reviewed the electrical conductivity data and stoichiometry data for La{sub 0.2}Sr{sub 0.8}Cr{sub 0.2}Fe{sub 0.8}O{sub 3-{delta}} some of which was reported previously. Electrical conductivity data for La{sub 0.2}Sr{sub 0.8}Cr{sub 0.2}Fe{sub 0.8}O{sub 3-{delta}} (LSCrF) were obtained in the temperature range, 752 {approx} 1055 C and in the pO{sub 2} range, 10{sup -18} {approx} 0.5 atm. The slope of the plot of log {sigma} vs. log pO{sub 2} is {approx} 1/5 in the p-type region, pO{sub 2} = 10{sup -5} {approx} 10{sup -1} atm. The pO{sub 2} at which the p-n transition is observed increases with increasing temperature. The activation energy for ionic conduction was estimated to be 0.86 eV from an Arrhenius plot of the minimum conductivity vs. reciprocal temperature. At temperatures below 940 C, a plateau in the conductivity isotherm suggests the presence of a two-phase region. Most likely, phase separation occurs to form a mixture of a perovskite phase and an oxygen vacancy ordered phase related to brownmillerite. Additional data for the oxygen non stoichiometry are presented.

S. Bandopadhyay; T. Nithyanantham

2006-12-31T23:59:59.000Z

223

Staged membrane oxidation reactor system  

DOE Patents (OSTI)

Ion transport membrane oxidation system comprising (a) two or more membrane oxidation stages, each stage comprising a reactant zone, an oxidant zone, one or more ion transport membranes separating the reactant zone from the oxidant zone, a reactant gas inlet region, a reactant gas outlet region, an oxidant gas inlet region, and an oxidant gas outlet region; (b) an interstage reactant gas flow path disposed between each pair of membrane oxidation stages and adapted to place the reactant gas outlet region of a first stage of the pair in flow communication with the reactant gas inlet region of a second stage of the pair; and (c) one or more reactant interstage feed gas lines, each line being in flow communication with any interstage reactant gas flow path or with the reactant zone of any membrane oxidation stage receiving interstage reactant gas.

Repasky, John Michael; Carolan, Michael Francis; Stein, VanEric Edward; Chen, Christopher Ming-Poh

2012-09-11T23:59:59.000Z

224

Staged membrane oxidation reactor system  

DOE Patents (OSTI)

Ion transport membrane oxidation system comprising (a) two or more membrane oxidation stages, each stage comprising a reactant zone, an oxidant zone, one or more ion transport membranes separating the reactant zone from the oxidant zone, a reactant gas inlet region, a reactant gas outlet region, an oxidant gas inlet region, and an oxidant gas outlet region; (b) an interstage reactant gas flow path disposed between each pair of membrane oxidation stages and adapted to place the reactant gas outlet region of a first stage of the pair in flow communication with the reactant gas inlet region of a second stage of the pair; and (c) one or more reactant interstage feed gas lines, each line being in flow communication with any interstage reactant gas flow path or with the reactant zone of any membrane oxidation stage receiving interstage reactant gas.

Repasky, John Michael; Carolan, Michael Francis; Stein, VanEric Edward; Chen, Christopher Ming-Poh

2014-05-20T23:59:59.000Z

225

Staged membrane oxidation reactor system  

DOE Patents (OSTI)

Ion transport membrane oxidation system comprising (a) two or more membrane oxidation stages, each stage comprising a reactant zone, an oxidant zone, one or more ion transport membranes separating the reactant zone from the oxidant zone, a reactant gas inlet region, a reactant gas outlet region, an oxidant gas inlet region, and an oxidant gas outlet region; (b) an interstage reactant gas flow path disposed between each pair of membrane oxidation stages and adapted to place the reactant gas outlet region of a first stage of the pair in flow communication with the reactant gas inlet region of a second stage of the pair; and (c) one or more reactant interstage feed gas lines, each line being in flow communication with any interstage reactant gas flow path or with the reactant zone of any membrane oxidation stage receiving interstage reactant gas.

Repasky, John Michael; Carolan, Michael Francis; Stein, VanEric Edward; Chen, Christopher Ming-Poh

2013-04-16T23:59:59.000Z

226

Oxygen Transport Ceramic Membranes  

SciTech Connect

A non-agglomerated and nanocrystalline-sized powder was successfully produced using ethylene glycol nitrate methods. The LSFT powder prepared using this method exhibits well dispersed and nano-sized particles about 100-200 nm. The density of LSFT sintered at 1300 C was about 90% of the theoretical density at which is 100 C less than that of the previous LSFT which was sintered at 1400 C. The sample sintered at 1400 C exhibited the evidence of a liquid phase at the grain boundaries and 2nd phase formation which probably caused low mechanical stability. The electrical conductivity and Seebeck coefficient were measured as a function of temperature. The LSFT-CGO specimens were cut from the as sintered bars and used for the evaluation of Mechanical Properties after polishing. The effect of strain rate on the flexural strength of the LSFT-CGO test specimens was studied. Three strain rates 6, 60 and 600 {micro}m/ min were chosen for this study. It is observed from the results that with increasing cross head speed the membrane takes higher loads to fail. A reduction in the strength of the membrane was observed at 1000 C in N{sub 2}. Two different routes were investigated to synthesis GDC using either formate or carbonate precursors. The precursor and CGO particle morphologies were examined by scanning electron microscopy. The thermal decomposition behaviors of Ce(Gd)(HCOO){sub 3} and Ce(Gd)(CO{sub 3})(OH) were determined by thermogravimetric analysis (TGA) at a rate of 3 C/min in air. The X-ray powder diffraction patterns of the precursor and CGO were collected and nitrogen adsorption isotherms were measured. Conductivity measurements were made by AC impedance spectroscopy on sintered disks in air using platinum electrodes.

S. Bandopadhyay; T. Nithyanantham

2006-06-30T23:59:59.000Z

227

Oxygen Transport Ceramic Membranes  

SciTech Connect

In the present quarter, experiments are presented on ceramic/metal interactions of Zirconia/ Ni-B-Si system and with a thin Ti coating deposited on zirconia surface. Existing facilities were modified for evaluation of environmental assisted slow crack growth and creep in flexural mode. Processing of perovskites of LSC, LSF and LSCF composition were continued for evaluation of mechanical properties as a function of environment. These studies in parallel to those on the LSFCO composition is expect to yield important information on questions such as the role of cation segregation and the stability of the perovskite structure on crack initiation vs. crack growth. Studies have been continued on the La{sub 1-x}Sr{sub x}FeO{sub 3-d} composition using neutron diffraction and TGA studies. A transition from p-type to n-type of conductor was observed at relative low pO{sub 2}, at which the majority carriers changed from the holes to electrons because of the valence state decreases in Fe due to the further loss of oxygen. Investigation on the thermodynamic properties of the membrane materials are continued to develop a complete model for the membrane transport. Data obtained at 850 C show that the stoichiometry in La{sub 0.2}Sr{sub 0.8}Fe{sub 0.8}Cr{sub 0.2}O{sub 3-x} vary from {approx}2.85 to 2.6 over the pressure range studied. From the stoichiometry a lower limit of 2.6 corresponding to the reduction of all Fe{sup 4+} to Fe{sup 3+} and no reduction of Cr{sup 3+} is expected.

S. Bandopadhyay; N. Nagabhushana

2003-08-07T23:59:59.000Z

228

NREL Develops Technique to Measure Membrane Thickness and Defects in Polymer Electrode Membrane Fuel Cells (Fact Sheet), Hydrogen and Fuel Cell Technical Highlights (HFCTH)  

NLE Websites -- All DOE Office Websites (Extended Search)

4 * November 2010 4 * November 2010 2-D image of a PEM fuel cell membrane sample measured with the NREL device (corresponding optical image in inset). The image shows bubble defects and a color shift in the sample. An area of approximately three inches by three inches is shown. NREL Develops Technique to Measure Membrane Thickness and Defects in Polymer Electrode Membrane Fuel Cells Project: Fuel Cell MEA Manufacturing R&D NREL Team: Hydrogen Technologies & Systems Center and National Center for Photovoltaics Accomplishment: NREL developed a technique to measure the two-dimensional thickness of polymer electrolyte membrane (PEM) fuel cell membranes for in-line quality control during manufacturing (first reported in May 2009). The technique is based on an NREL-developed instrument currently used in continuous manufacturing of photovoltaic cells. This

229

Technology Transfer  

NLE Websites -- All DOE Office Websites (Extended Search)

Technology Transfer Since 1974, the Federal Laboratory Consortium (FLC) Award for Excellence in Technology Transfer has recognized scientists and engineers at federal government...

230

Tools & Technologies  

Energy.gov (U.S. Department of Energy (DOE))

We provide leadership for transforming workforce development through the power of technology. It develops corporate educational technology policy and enables the use of learning tools and...

231

Technology Transfer: Available Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Ion Sources and Beam Technologies Ion Sources and Beam Technologies GENERATORS AND DETECTORS Compact, Safe and Energy Efficient Neutron Generator Fast Pulsed Neutron Generator High Energy Gamma Generator Lithium-Drifted Silicon Detector with Segmented Contacts Low Power, High Energy Gamma Ray Detector Calibration Device Nested Type Coaxial Neutron Generator Neutron and Proton Generators: Cylindrical Neutron Generator with Nested Option, IB-1764 Neutron-based System for Nondestructive Imaging, IB-1794 Mini Neutron Tube, IB-1793a Ultra-short Ion and Neutron Pulse Production, IB-1707 Mini Neutron Generator, IB-1793b Compact Spherical Neutron Generator, IB-1675 Plasma-Driven Neutron/Gamma Generators Portable, Low-cost Gamma Source for Active Interrogation ION SOURCES WITH ANTENNAS External Antenna for Ion Sources

232

Membrane-based systems for carbon capture and hydrogen purification  

SciTech Connect

This presentation describes the activities being conducted at Los Alamos National Laboratory to develop carbon capture technologies for power systems. This work is aimed at continued development and demonstration of a membrane based pre- and post-combustion carbon capture technology and separation schemes. Our primary work entails the development and demonstration of an innovative membrane technology for pre-combustion capture of carbon dioxide that operates over a broad range of conditions relevant to the power industry while meeting the US DOE's Carbon Sequestration Program goals of 90% CO{sub 2} capture at less than a 10% increase in the cost of energy services. Separating and capturing carbon dioxide from mixed gas streams is a first and critical step in carbon sequestration. To be technically and economically viable, a successful separation method must be applicable to industrially relevant gas streams at realistic temperatures and pressures as well as be compatible with large gas volumes. Our project team is developing polymer membranes based on polybenzimidazole (PBI) chemistries that can purify hydrogen and capture CO{sub 2} at industrially relevant temperatures. Our primary objectives are to develop and demonstrate polymer-based membrane chemistries, structures, deployment platforms, and sealing technologies that achieve the critical combination of high selectivity, high permeability, chemical stability, and mechanical stability all at elevated temperatures (> 150 C) and packaged in a scalable, economically viable, high area density system amenable to incorporation into an advanced Integrated Gasification Combined-Cycle (IGCC) plant for pre-combustion CO{sub 2} capture. Stability requirements are focused on tolerance to the primary synthesis gas components and impurities at various locations in the IGCC process. Since the process stream compositions and conditions (temperature and pressure) vary throughout the IGCC process, the project is focused on the optimization of a technology that could be positioned upstream or downstream of one or more of the water-gas-shift reactors (WGSRs) or integrated with a WGSR.

Berchtold, Kathryn A [Los Alamos National Laboratory

2010-11-24T23:59:59.000Z

233

General Aspects of Membrane Separation Processes  

Science Journals Connector (OSTI)

This chapter focuses on the current challenges of water and wastewater treatment aiming reuse. Membrane separation processes are presented and electrodialysis is compared to pressure driven membrane processes,...

Andréa Moura Bernardes

2014-01-01T23:59:59.000Z

234

Acid Doped Membranes for High Temperature PEMFC  

Energy.gov (U.S. Department of Energy (DOE))

Presentation on Acid Doped Membranes for High Temperature PEMFC to the High Temperature Membrane Working Group, May 25, 2004 in Philadelphia, PA.

235

Webinar: Hydrogen Production by Polymer Electrolyte Membrane...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Production by Polymer Electrolyte Membrane (PEM) Electrolysis-Spotlight on Giner and Proton Webinar: Hydrogen Production by Polymer Electrolyte Membrane (PEM) Electrolysis-Spotligh...

236

Extracorporeal membrane oxygenation promotes long chain fatty...  

NLE Websites -- All DOE Office Websites (Extended Search)

membrane oxygenation promotes long chain fatty acid oxidation in the immature swine heart in vivo. Extracorporeal membrane oxygenation promotes long chain fatty acid oxidation...

237

Controlling membrane protein folding using photoresponsive surfactant.  

E-Print Network (OSTI)

??Membrane proteins perform a number of roles in biological function. Membrane lipids can self assembly into numerous different phases in aqueous solution, including micelles, vesicles… (more)

Chang, Chia Hao

2012-01-01T23:59:59.000Z

238

Some durability considerations for proton exchange membranes...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Oct. 14, 2010 hightemphamrock.pdf More Documents & Publications New Membranes for PEM Fuel Cells Model Compound Studies of Fuel Cell Membrane Degradation Processing-Performance...

239

Sandia National Laboratories: fuel cell membrane  

NLE Websites -- All DOE Office Websites (Extended Search)

membrane ECIS-Automotive Fuel Cell Corporation: Hydrocarbon Membrane Fuels the Success of Future Generation Vehicles On February 14, 2013, in CRF, Energy, Energy Efficiency,...

240

New Membranes for PEM Fuel Cells  

Energy.gov (U.S. Department of Energy (DOE))

Presentation on New Membranes for PEM Fuel Cells to the High Temperature Membrane Working Group Meeting held in Arlington, Virginia, May 26,2005.

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Some durability considerations for proton exchange membranes  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

creates an aggressive environment for the electrolyte membrane. This includes: - Mechanical stresses related to changes in the level of membrane hydration. - Thermal...

242

Fullerene-Nafion Composite Recast Membranes  

Energy.gov (U.S. Department of Energy (DOE))

Presentation on Fullerene-Nafion Composite Recast Membranes to the High Temperature Membrane Working Group Meeting held in Arlington, Virginia, May 26,2005.

243

Achieving very low mercury levels in refinery wastewater by membrane filtration.  

SciTech Connect

Microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO) membranes were evaluated for their ability to achieve the world's most stringent Hg discharge criterion (<1.3 ng/L) in an oil refinery's wastewater. The membrane processes were operated at three different pressures to demonstrate the potential for each membrane technology to achieve the targeted effluent mercury concentrations. The presence of mercury in the particulate form in the refinery wastewater makes the use of MF and UF membrane technologies more attractive in achieving very low mercury levels in the treated wastewater. Both NF and RO were also able to meet the target mercury concentration at lower operating pressures (20.7 bar). However, higher operating pressures ({ge}34.5 bar) had a significant effect on NF and RO flux and fouling rates, as well as on permeate quality. SEM images of the membranes showed that pore blockage and narrowing were the dominant fouling mechanisms for the MF membrane while surface coverage was the dominant fouling mechanism for the other membranes. The correlation between mercury concentration and particle size distribution was also investigated to understand mercury removal mechanisms by membrane filtration. The mean particle diameter decreased with filtration from 1.1 {+-} 0.0 {micro}m to 0.74 {+-} 0.2 {micro}m after UF.

Urgun Demirtas, M.; Benda, P.; Gillenwater, P. S.; Negri, M. C.; Xiong, H.; Snyder, S. W. (Center for Nanoscale Materials); ( ES)

2012-05-15T23:59:59.000Z

244

Exploration Technologies Technology Needs Assessment  

Energy.gov (U.S. Department of Energy (DOE))

The Exploration Technologies Needs Assessment is a critical component of ongoing technology roadmapping efforts, and will be used to guide the program's research and development.

245

UNDERSTANDING THE EFFECT OF DYNAMIC FEED CONDITIONS ON WATER RECOVERY FROM IC ENGINE EXHAUST BY CAPILLARY CONDENSATION WITH INORGANIC MEMBRANES  

SciTech Connect

An inorganic membrane water recovery concept is evaluated as a method to recovering water from the exhaust of an internal combustion engine. Integrating the system on-board a vehicle would create a self-sustaining water supply that would make engine water injection technologies consumer transparent . In laboratory experiments, water recovery from humidified air was measured to evaluate how different operating parameters affect the membrane system s efficiency. The observed impact of transmembrane pressure and gas flow rate suggest that gas residence time is more important than water flux through the membrane. Heat transfer modeling suggests that increasing membrane length can be used to improve efficiency and allow greater flow per membrane, an important parameter for practical applications where space is limited. The membrane water recovery concept was also experimentally validated by extracting water from diesel exhaust coming from a stationary generator. The insight afforded by these studies provides a basis for developing improved membrane designs that balance both efficiency and cost.

DeBusk, Melanie Moses [ORNL] [ORNL; Bischoff, Brian L [ORNL] [ORNL; Hunter, James A [ORNL] [ORNL; Klett, James William [ORNL] [ORNL; Nafziger, Eric J [ORNL] [ORNL; Daw, C Stuart [ORNL] [ORNL

2014-01-01T23:59:59.000Z

246

Gas Separations using Ceramic Membranes  

SciTech Connect

This project has been oriented toward the development of a commercially viable ceramic membrane for high temperature gas separations. A technically and commercially viable high temperature gas separation membrane and process has been developed under this project. The lab and field tests have demonstrated the operational stability, both performance and material, of the gas separation thin film, deposited upon the ceramic membrane developed. This performance reliability is built upon the ceramic membrane developed under this project as a substrate for elevated temperature operation. A comprehensive product development approach has been taken to produce an economically viable ceramic substrate, gas selective thin film and the module required to house the innovative membranes for the elevated temperature operation. Field tests have been performed to demonstrate the technical and commercial viability for (i) energy and water recovery from boiler flue gases, and (ii) hydrogen recovery from refinery waste streams using the membrane/module product developed under this project. Active commercializations effort teaming with key industrial OEMs and end users is currently underway for these applications. In addition, the gas separation membrane developed under this project has demonstrated its economical viability for the CO2 removal from subquality natural gas and landfill gas, although performance stability at the elevated temperature remains to be confirmed in the field.

Paul KT Liu

2005-01-13T23:59:59.000Z

247

Amorphous Alloy Membranes for High Temperature Hydrogen Separation  

SciTech Connect

At the beginning of this project, thin film amorphous alloy membranes were considered a nascent but promising new technology for industrial-scale hydrogen gas separations from coal- derived syngas. This project used a combination of theoretical modeling, advanced physical vapor deposition fabricating, and laboratory and gasifier testing to develop amorphous alloy membranes that had the potential to meet Department of Energy (DOE) targets in the testing strategies outlined in the NETL Membrane Test Protocol. The project is complete with Southwest Research Institute® (SwRI®), Georgia Institute of Technology (GT), and Western Research Institute (WRI) having all operated independently and concurrently. GT studied the hydrogen transport properties of several amorphous alloys and found that ZrCu and ZrCuTi were the most promising candidates. GT also evaluated the hydrogen transport properties of V, Nb and Ta membranes coated with different transition-metal carbides (TMCs) (TM = Ti, Hf, Zr) catalytic layers by employing first-principles calculations together with statistical mechanics methods and determined that TiC was the most promising material to provide catalytic hydrogen dissociation. SwRI developed magnetron coating techniques to deposit a range of amorphous alloys onto both porous discs and tubular substrates. Unfortunately none of the amorphous alloys could be deposited without pinhole defects that undermined the selectivity of the membranes. WRI tested the thermal properties of the ZrCu and ZrNi alloys and found that under reducing environments the upper temperature limit of operation without recrystallization is ~250 °C. There were four publications generated from this project with two additional manuscripts in progress and six presentations were made at national and international technical conferences. The combination of the pinhole defects and the lack of high temperature stability make the theoretically identified most promising candidate amorphous alloys unsuitable for application as hydrogen separation membranes in coal fire systems.

Coulter, K

2013-09-30T23:59:59.000Z

248

Novel Membranes and Processes for Oxygen Enrichment  

SciTech Connect

The overall goal of this project is to develop a membrane process that produces air containing 25-35% oxygen, at a cost of $25-40/ton of equivalent pure oxygen (EPO2). Oxygen-enriched air at such a low cost will allow existing air-fueled furnaces to be converted economically to oxygen-enriched furnaces, which in turn will improve the economic and energy efficiency of combustion processes significantly, and reduce the cost of CO{sub 2} capture and sequestration from flue gases throughout the U.S. manufacturing industries. During the 12-month Concept Definition project: We identified a series of perfluoropolymers (PFPs) with promising oxygen/nitrogen separation properties, which were successfully made into thin film composite membranes. The membranes showed oxygen permeance as high as 1,200 gpu and oxygen/nitrogen selectivity of 3.0, and the permeance and selectivity were stable over the time period tested (60 days). We successfully scaled up the production of high-flux PFP-based membranes, using MTR's commercial coaters. Two bench-scale spiral-wound modules with countercurrent designs were made and parametric tests were performed to understand the effect of feed flow rate and pressure, permeate pressure and sweep flow rate on the membrane module separation properties. At various operating conditions that modeled potential industrial operating conditions, the module separation properties were similar to the pure-gas separation properties in the membrane stamps. We also identified and synthesized new polymers [including polymers of intrinsic microporosity (PIMs) and polyimides] with higher oxygen/nitrogen selectivity (3.5-5.0) than the PFPs, and made these polymers into thin film composite membranes. However, these membranes were susceptible to severe aging; pure-gas permeance decreased nearly six-fold within two weeks, making them impractical for industrial applications of oxygen enrichment. We tested the effect of oxygen-enriched air on NO{sub x} emissions using a Bloom baffle burner at GTI. The results are positive and confirm that oxygen-enriched combustion can be carried out without producing higher levels of NOx than normal air firing, if lancing of combustion air is used and the excess air levels are controlled. A simple economic study shows that the membrane processes can produce O{sub 2} at less than $40/ton EPO{sub 2} and an energy cost of 1.1-1.5 MMBtu/ton EPO{sub 2}, which are very favorable compared with conventional technologies such as cryogenics and vacuum pressure swing adsorption processes. The benefits of integrated membrane processes/combustion process trains have been evaluated, and show good savings in process costs and energy consumption, as well as reduced CO{sub 2} emissions. For example, if air containing 30% oxygen is used in natural gas furnaces, the net natural gas savings are an estimated 18% at a burner temperature of 2,500 F, and 32% at a burner temperature of 3,000 F. With a 20% market penetration of membrane-based oxygen-enriched combustion in all combustion processes by 2020, the energy savings would be 414-736 TBtu/y in the U.S. The comparable net cost savings are estimated at $1.2-2.1 billion per year by 2020, calculated as the value of fuel savings subtracted from the cost of oxygen production. The fuel savings of 18%-32% by the membrane/oxygen-enriched combustion corresponds to an 18%-32% reduction in CO{sub 2} emissions, or 23-40 MM ton/y less CO{sub 2} from natural gas-fired furnaces by 2020. In summary, results from this project (Concept Definition phase) are highly promising and clearly demonstrate that membrane processes can produce oxygen-enriched air in a low cost manner that will lower operating costs and energy consumption in industrial combustion processes. Future work will focus on proof-of-concept bench-scale demonstration in the laboratory.

Lin, Haiqing

2011-11-15T23:59:59.000Z

249

Membrane Purification Cell for Aluminum Recycling  

SciTech Connect

Recycling mixed aluminum scrap usually requires adding primary aluminum to the scrap stream as a diluent to reduce the concentration of non-aluminum constituents used in aluminum alloys. Since primary aluminum production requires approximately 10 times more energy than melting scrap, the bulk of the energy and carbon dioxide emissions for recycling are associated with using primary aluminum as a diluent. Eliminating the need for using primary aluminum as a diluent would dramatically reduce energy requirements, decrease carbon dioxide emissions, and increase scrap utilization in recycling. Electrorefining can be used to extract pure aluminum from mixed scrap. Some example applications include producing primary grade aluminum from specific scrap streams such as consumer packaging and mixed alloy saw chips, and recycling multi-alloy products such as brazing sheet. Electrorefining can also be used to extract valuable alloying elements such as Li from Al-Li mixed scrap. This project was aimed at developing an electrorefining process for purifying aluminum to reduce energy consumption and emissions by 75% compared to conventional technology. An electrolytic molten aluminum purification process, utilizing a horizontal membrane cell anode, was designed, constructed, operated and validated. The electrorefining technology could also be used to produce ultra-high purity aluminum for advanced materials applications. The technical objectives for this project were to: - Validate the membrane cell concept with a lab-scale electrorefining cell; - Determine if previously identified voltage increase issue for chloride electrolytes holds for a fluoride-based electrolyte system; - Assess the probability that voltage change issues can be solved; and - Conduct a market and economic analysis to assess commercial feasibility. The process was tested using three different binary alloy compositions (Al-2.0 wt.% Cu, Al-4.7 wt.% Si, Al-0.6 wt.% Fe) and a brazing sheet scrap composition (Al-2.8 wt.% Si-0.7 wt.% Fe-0.8 wt.% Mn),. Purification factors (defined as the initial impurity concentration divided by the final impurity concentration) of greater than 20 were achieved for silicon, iron, copper, and manganese. Cell performance was measured using its current and voltage characteristics and composition analysis of the anode, cathode, and electrolytes. The various cells were autopsied as part of the study. Three electrolyte systems tested were: LiCl-10 wt. % AlCl3, LiCl-10 wt. % AlCl3-5 wt.% AlF3 and LiF-10 wt.% AlF3. An extended four-day run with the LiCl-10 wt.% AlCl3-5 wt.% AlF3 electrolyte system was stable for the entire duration of the experiment, running at energy requirements about one third of the Hoopes and the conventional Hall-Heroult process. Three different anode membranes were investigated with respect to their purification performance and survivability: a woven graphite cloth with 0.05 cm nominal thickness & > 90 % porosity, a drilled rigid membrane with nominal porosity of 33%, and another drilled rigid graphite membrane with increased thickness. The latter rigid drilled graphite was selected as the most promising membrane design. The economic viability of the membrane cell to purify scrap is sensitive to primary & scrap aluminum prices, and the cost of electricity. In particular, it is sensitive to the differential between scrap and primary aluminum price which is highly variable and dependent on the scrap source. In order to be economically viable, any scrap post-processing technology in the U.S. market must have a total operating cost well below the scrap price differential of $0.20-$0.40 per lb to the London Metal Exchange (LME), a margin of 65%-85% of the LME price. The cost to operate the membrane cell is estimated to be < $0.24/lb of purified aluminum. The energy cost is estimated to be $0.05/lb of purified aluminum with the remaining costs being repair and maintenance, electrolyte, labor, taxes and depreciation. The bench-scale work on membrane purification cell process has demonstrated technological advantages and subs

David DeYoung; James Wiswall; Cong Wang

2011-11-29T23:59:59.000Z

250

Energy Technologies  

Energy.gov (U.S. Department of Energy (DOE))

Best practices, project resources, and other tools on energy efficiency and renewable energy technologies.

251

Oxygen Transport Ceramic Membranes  

SciTech Connect

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. In this report, Moessbauer spectroscopy was used to study the local environmentals of LSFT with various level of oxygen deficiency. Ionic valence state, magnetic interaction and influence of Ti on superexchange are discussed Stable crack growth studies on Dense OTM bars provided by Praxair were done at elevated temperature, pressure and elevated conditions. Post-fracture X-ray data of the OTM fractured at 1000 C in environment were refined by FullProf code and results indicate a distortion of the parent cubic perovskite to orthorhombic structure with reduced symmetry. TGA-DTA studies on the post-fracture samples also indicated residual effect arising from the thermal and stress history of the samples. An electrochemical cell has been designed and built for measurements of the Seebeck coefficient as a function of temperature and pressure. The initial measurements on La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} are reported. Neutron diffraction measurements of the same composition are in agreement with both the stoichiometry and the kinetic behavior observed in coulometric titration measurements. A series of isotope transients under air separation mode (small gradient) were completed on the membrane of LSCrF-2828 at 900 C. Low pO{sub 2} atmospheres based on with CO-CO{sub 2} mixtures have also been admitted to the delivery side of the LSCrF-2828 membrane to produce the gradients which exist under syngas generation conditions. The COCO{sub 2} mixtures have normal isotopic {sup 18}O abundances. The evolution of {sup 18}O on the delivery side in these experiments after an {sup 18}O pulse on the air side reveals a wealth of information about the oxygen transport processes.

S. Bandopadhyay; N. Nagabhushana; X.-D Zhou; Q. Cai; J. Yang; W.B. Yelon; W.J. James; H.U. Anderson; Alan Jacobson; C.A. Mims

2004-10-01T23:59:59.000Z

252

STUDYING MEMBRANE ANCHOR ORGANIZATION IN LIVING CELL MEMBRANES  

E-Print Network (OSTI)

17 Figure 2.2. PIE-FCCS acquisition generates cross-talkin Cell Membranes is Revealed by PIE-FCCS .. 11 2.115 2.3.5 PIE-

Huang, Hector Han-Li

2011-01-01T23:59:59.000Z

253

Oxygen Transport Ceramic Membranes  

SciTech Connect

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and initial studies on newer composition of Ti doped LSF. Dense OTM bars provided by Praxair were loaded to fracture at varying stress rates. Studies were done at room temperature in air and at 1000 C in a specified environment to evaluate slow crack growth behavior. In addition, studies were also begun to obtain reliable estimates of fracture toughness and stable crack growth in specific environments. Newer composition of Ti doped LSF membranes were characterized by neutron diffraction analysis. Quench studies indicated an apparent correlation between the unit cell volume and oxygen occupancy. The studies however, indicated an anomaly of increasing Fe/Ti ratio with change in heat treatment. Ti doped LSF was also characterized for stoichiometry as a function of temp and pO{sub 2}. The non stoichiometry parameter {delta} was observed to increase almost linearly on lowering pO{sub 2} until a ideal stoichiometric composition of {delta} = 0.175 was approached.

S. Bandopadhyay; N. Nagabhushana; X.-D Zhou; W.B. Yelon; H.U. Anderson; Alan Jacobson; C.A. Mims

2004-02-01T23:59:59.000Z

254

A Membrane Process for Recycling Die Lube from Wastewater Solutions  

SciTech Connect

An active-surface membrane technology was used to separate a die lube manufacturing wastewater stream consisting of various oils, hydrocarbons, heavy metals, and silicones. The ultrafiltration membranes reduced organics from initial oil and grease contents by 20–25X, carbon oxygen demand (COD) by 1.5 to 2X, and total organic carbon (TOC) by 0.6, while the biological oxygen demand (BOD) remained constant. The active-surface membranes were not fouled as badly as non-active-surface systems and the active-surface membrane flux levels were consistently higher and more stable than those of the non-active-surface membranes tested. Field testing demonstrated that the rotary microfilter can concentrate the die lube, i.e. remove the glycerin component, and produce a die lube suitable for recycling. The recycling system operated for six weeks with only seven cleaning cycles and no mechanical or electrical failures. Test data and quality records indicate that the die casting scrap was reduced from 8.4 to 7.8%. There is no doubt that this test yielded tremendous results. This separation process presents significant opportunities that can be evaluated further.

Eric S. Peterson; Jessica Trudeau; Bill Cleary; Michael Hackett; William A. Greene

2003-04-01T23:59:59.000Z

255

A Membrane Process for Recycling Die Lube from Wastewater Solutions  

SciTech Connect

An active-surface membrane technology was used to separate a die lube manufacturing wastewater stream consisting of various oils, hydrocarbons, heavy metals, and silicones. The ultrafiltration membranes reduced organics from initial oil and grease contents by 20?25X, carbon oxygen demand (COD) by 1.5 to 2X, and total organic carbon (TOC) by 0.6, while the biological oxygen demand (BOD) remained constant. The active-surface membranes were not fouled as badly as non-active-surface systems and the active-surface membrane flux levels were consistently higher and more stable than those of the non-active-surface membranes tested. Field testing demonstrated that the rotary microfilter can concentrate the die lube, i.e. remove the glycerin component, and produce a die lube suitable for recycling. The recycling system operated for six weeks with only seven cleaning cycles and no mechanical or electrical failures. Test data and quality records indicate that the die casting scrap was reduced from 8.4 to 7.8%. There is no doubt that this test yielded tremendous results. This separation process presents significant opportunities that can be evaluated further.

Peterson, E.S.; Trudeau, J.; Cleary, B.; Hackett, M.; Greene, W.A.

2003-04-30T23:59:59.000Z

256

804 JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 12, NO. 6, DECEMBER 2003 A Wafer-Scale Membrane Transfer Process  

E-Print Network (OSTI)

Transfer Process for the Fabrication of Optical Quality, Large Continuous Membranes Eui-Hyeok Yang Institute of Technology, Pasadena, CA 91109 USA (e-mail: Eui-Hyeok.Yang@ jpl.nasa.gov). Digital Object

Yang, Eui-Hyeok

257

ADVANCED HYDROGEN TRANSPORT MEMBRANES FOR VISION 21 FOSSIL FUEL PLANTS  

SciTech Connect

Eltron Research Inc., and team members CoorsTek, McDermott Technology, inc., Sued Chemie, Argonne National Laboratory, and Oak Ridge National Laboratory are developing an environmentally benign, inexpensive, and efficient method for separating hydrogen from gas mixtures produced during industrial processes, such as coal gasification. This project was motivated by the National Energy Technology Laboratory (NETL) Vision 21 initiative which seeks to economically eliminate environmental concerns associated with the use of fossil fuels. This objective is being pursued using dense membranes based in part on Eltron-patented ceramic materials with a demonstrated ability for proton and electron conduction. The technical goals are being addressed by modifying single-phase and composite membrane composition and microstructure to maximize proton and electron conductivity without loss of material stability. Ultimately, these materials must enable hydrogen separation at practical rates under ambient and high-pressure conditions, without deactivation in the presence of feedstream components such as carbon dioxide, water, and sulfur.

Shane E. Roark; Anthony F. Sammells; Richard A. Mackay; Lyrik Y. Pitzman; Thomas A. Zirbel; Thomas F. Barton; Sara L. Rolfe; U. (Balu) Balachandran; Richard N. Kleiner; James E. Stephan; Frank E. Anderson; George Farthing; Dan Rowley; Tim R. Armstrong; R.D. Carneim; P.F. Becher; C-H. Hsueh; Aaron L. Wagner; Jon P. Wagner

2002-04-30T23:59:59.000Z

258

ADVANCED HYDROGEN TRANSPORT MEMBRANES FOR VISION 21 FOSSIL FUEL PLANTS  

SciTech Connect

Eltron Research Inc., and team members, are developing an environmentally benign, inexpensive, and efficient method for separating hydrogen from gas mixtures produced during industrial processes, such as coal gasification. This project was motivated by the National Energy Technology Laboratory (NETL) Vision 21 initiative which seeks to economically eliminate environmental concerns associated with the use of fossil fuels. This objective is being pursued using dense membranes based in part on Eltron-patented ceramic materials with a demonstrated ability for proton and electron conduction. The technical goals are being addressed by modifying single-phase and composite membrane composition and microstructure to maximize proton and electron conductivity without loss of material stability. Ultimately, these materials must enable hydrogen separation at practical rates under ambient and high-pressure conditions, without deactivation in the presence of feedstream components such as carbon dioxide, water, and sulfur. During this quarter, ceramic, cermet (ceramic/metal), and thin film membranes were prepared, characterized, and evaluated for H{sub 2} transport. For selected ceramic membrane compositions an optimum range for transition metal doping was identified, and it was determined that highest proton conductivity occurred for two-phase ceramic materials. Furthermore, a relationship between transition metal dopant atomic number and conductivity was observed. Ambipolar conductivities of {approx}6 x 10{sup -3} S/cm were achieved for these materials, and {approx} 1-mm thick membranes generated H{sub 2} transport rates as high as 0.3 mL/min/cm{sup 2}. Cermet membranes during this quarter were found to have a maximum conductivity of 3 x 10{sup -3} S/cm, which occurred at a metal phase contact of 36 vol.%. Homogeneous dense thin films were successfully prepared by tape casting and spin coating; however, there remains an unacceptably high difference in shrinkage rates between the film and support, which led to membrane instability. Further improvements in high pressure membrane seals also were achieved during this quarter, and a maximum pressure of 100 psig was attained. CoorsTek optimized many of the processing variables relevant to manufacturing scale production of ceramic H{sub 2} transport membranes, and SCI used their expertise to deposit a range of catalysts compositions onto ceramic membrane surfaces. Finally, MTI compiled relevant information regarding Vision 21 fossil fuel plant operation parameters, which will be used as a starting point for assessing the economics of incorporating a H{sub 2} separation unit.

Shane E. Roark; Tony F. Sammells; Richard A. Mackay; Adam E. Calihman; Lyrik Y. Pitzman; Tom F. Barton; Sara L. Rolfe; Richard N. Kleiner; James E. Stephan; Mike J. Holmes; Aaron L. Wagner

2001-07-30T23:59:59.000Z

259

ADVANCED HYDROGEN TRANSPORT MEMBRANES FOR VISION 21 FOSSIL FUEL PLANTS  

SciTech Connect

Eltron Research Inc., and team members, are developing an environmentally benign, inexpensive, and efficient method for separating hydrogen from gas mixtures produced during industrial processes, such as coal gasification. This project was motivated by the National Energy Technology Laboratory (NETL) Vision 21 initiative which seeks to economically eliminate environmental concerns associated with the use of fossil fuels. This objective is being pursued using dense membranes based in part on Eltron-patented ceramic materials with a demonstrated ability for proton and electron conduction. The technical goals are being addressed by modifying single-phase and composite membrane composition and microstructure to maximize proton and electron conductivity without loss of material stability. Ultimately, these materials must enable hydrogen separation at practical rates under ambient and high-pressure conditions, without deactivation in the presence of feedstream components such as carbon dioxide, water, and sulfur. During this quarter, it was demonstrated that increasing the transition metal loading in a model perovskite composition resulted in an increase in hydrogen flux. Improved flux corresponded to the emergence of additional phases in the ceramic membrane, and highest flux was achieved for a composite consisting of pseudo-cubic and rhombohedral perovskite phases. A 0.9-mm thick membrane of this material generated a hydrogen flux in excess of 0.1 mL/min/cm{sup 2}, which was approximately 35 times greater than analogs with lower transition metal levels. The dopant level and crystal structure also correlated with membrane density and coefficient of thermal expansion, but did not appear to affect grain size or shape. Additionally, preliminary ceramic-metal (cermet) composite membranes demonstrated a 10-fold increase in flux relative to analogous membranes composed of only the ceramic component. The hydrogen flux for these cermet samples corresponded to a conductivity of {approx} 10{sup -3} S/cm, which was consistent with the predicted proton conductivity of the ceramic phase. Increasing the sweep gas flow rate in test reactors was found to significantly increase hydrogen flux, as well as apparent material conductivity for all samples tested. Adding humidity to the feed gas stream produced a small increase in hydrogen flux. However, the catalyst on ceramic membrane surfaces did not affect flux, which suggested that the process was membrane-diffusion limited. Representative samples and fabrication processes were evaluated on the basis of manufacturing practicality. it was determined that optimum membrane densification occurs over a very narrow temperature range for the subject ceramics. Additionally, calcination temperatures currently employed result in powders that are difficult mill and screen. These issues must be addressed to improve large-scale fabricability.

Shane E. Roark; Tony F. Sammells; Adam E. Calihman; Lyrik Y. Pitzman; Pamela M. Van Calcar; Richard A. Mackay; Tom F. Barton; Sara L. Rolfe; Richard N. Kleiner; James E. Stephan; Tim R. Armstrong; Mike J. Holmes; Aaron L. Wagner

2001-04-30T23:59:59.000Z

260

Evaluation of electrodialysis for scaling prevention of nanofiltration membranes at high water recoveries  

Science Journals Connector (OSTI)

The water recovery of nanofiltration in drinking water production is limited to 80–85%. When the water recovery is increased, there is a risk of scaling of sparingly soluble salts, such as CaSO4 or CaCO3, onto the membrane surface. There is a need for robust technologies that handle the problem of mineral scaling in nanofiltration and reverse osmosis, allowing operation at higher recoveries, i.e., with a higher production of potable water. In this study, the retentate stream of a nanofiltration unit was therefore desalinated by electrodialysis. Two different ion exchange membrane pairs, namely AMX-CMX (Neosepta, Japan) and FTAM-FTCM (Fumasep, Germany) were used for this purpose. The membrane pairs were compared on the basis of their removal efficiency of the main ions present in natural waters, with special attention to calcium and sulphate ions. The economic feasibility of retentate treatment by electrodialysis is discussed as well. The FTAM anion exchange membranes of Fumasep were able to remove sulphate ions faster, relative to chloride or nitrate ions. This is unexpected, because sulphate ions have a high hydrated ionic radius and steric hindrance typically obstructs their transport through anion exchange membranes, as is the case with the AMX membranes. This feature makes the FTAM membranes appropriate for the desalination of retentate streams of nanofiltration and reverse osmosis membranes, in water recycling applications. The other membranes can be regarded as non-selective.

Steven Van Geluwe; Leen Braeken; Thomas Robberecht; Maarten Jans; Claude Creemers; Bart Van der Bruggen

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Alkaline Membrane Fuel Cell Workshop  

Energy.gov (U.S. Department of Energy (DOE))

A workshop on alkaline membrane fuel cells (AMFC) was held May 8-9, 2011, before the 2011 Hydrogen and Fuel Cells Annual Merit Review, at Crystal Gateway Marriott in Arlington, Virginia.

262

Layered plasma polymer composite membranes  

DOE Patents (OSTI)

Layered plasma polymer composite fluid separation membranes are disclosed, which comprise alternating selective and permeable layers for a total of at least 2n layers, where n is [>=]2 and is the number of selective layers. 2 figs.

Babcock, W.C.

1994-10-11T23:59:59.000Z

263

Membrane Separations of Liquid Mixtures  

E-Print Network (OSTI)

MEMBRANE SEPARATIONS OF LIQUID MIXTURES Douglas R. Lloyd Separations Research Program Department of Chemical Engineering The University of Texas at Austin Austin, Texas In recent years considerable attention has been given to the need... for reduced energy costs in the chemical processing industry. A major portion of the energy consumed in this industry is associated with the separation and recovery of chemicals. Membrane processes offer energy-efficient, cost effective methods...

Lloyd, D. R.

264

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

This quarterly technical progress report will summarize work accomplished for Phase 2 Program during the quarter April to June 2004. In task 1, long term testing of OTM elements at different temperatures and process conditions continued. In task 2, OTM elements were manufactured as necessary for task 1. In task 7, advanced OTM and cryogenic IGCC cases for near-term integration were developed, leading to cost requirements for commercial viability. In task 9, discussion with DOE regarding restructuring the program for subsequent phases were initiated. The objectives of the second year of phase 2 of the program are to construct and operate an engineering pilot reactor for OTM oxygen. Work to support this objective is being undertaken in the following areas in this quarter: Element reliability; Element fabrication; and IGCC process analysis and economics. The major accomplishments this quarter were: Long term life test of OTM element passed nine months at different testing conditions.

Ravi Prasad

2004-09-01T23:59:59.000Z

265

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

This quarterly technical progress report will summarize work accomplished for Phase 2 Program during the quarter January to March 2004. In task 1 OTM development has led to improved strength and composite design for lower temperatures. In task 2, the measurement system of OTM element dimensions was improved. In task 3, a 10-cycle test of a three-tube submodule was reproduced successfully. In task 5, sizing of several potential heat recovery systems was initiated. In task 7, advanced OTM and cryogenic IGCC cases for near-term integration were developed.

Ravi Prasad

2004-03-31T23:59:59.000Z

266

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

This quarterly technical progress report will summarize work accomplished for Phase 1 Program during the quarter January to March 2001. In task 1 careful modification of the composition and processing conditions of the OTM has enabled manufacture of high quality OTM elements. In addition, finite element modeling has been used to identify a suitable composition and geometry for successful pilot plant operation. In task 2, composite elements of materials with improved mechanical properties have been developed. In task 3, development of preferred fabrication methods has resulted in production of pilot plant scale composite elements. The work in task 4 has demonstrated that composite OTM elements can produce oxygen at atmospheric pressure of greater than 95% purity from a high-pressure air feed gas. The work in task 5 to construct a multi-tube OTM reactor is ongoing.

Ravi Prasad

2001-04-01T23:59:59.000Z

267

CERAMIC MEMBRANE ENABLING TECHNOLOGY FOR IMPROVED IGCC EFFICIENCY  

SciTech Connect

This quarterly technical progress report will summarize work accomplished for Phase 1 Program during the quarter October to December 2000. In task 1 careful modification of the processing conditions of the OTM has improved the properties of the final element. In addition, finite element modeling has been used to predict the mechanical behavior of OTM tubes and to identify strategies for improving OTM robustness. In task 2, composite elements of PSO1d have been prepared and tested for over 800 hours without degradation in oxygen flux. Alternative materials for composite OTM and architectures have been examined with success. In task 3, modification of fabrication routes has resulted in a substantial increase in the yield of PSO1d composite elements. The work in task 4 has demonstrated that composite OTM elements can produce oxygen at atmospheric pressure of greater than 95% purity from a high-pressure air feed gas. The work in task 5 to construct a multi-tube OTM reactor has begun.

Ravi Prasad

2001-01-01T23:59:59.000Z

268

New Membrane Technology for Post-Combustion Carbon Capture Begins...  

Office of Environmental Management (EM)

research portfolio and has the potential to support the reduction of greenhouse gas emissions from coal-fired power plants while minimizing the increase in electricity...

269

Membrane reactor technology for C5/C6 hydroisomerization  

Science Journals Connector (OSTI)

...produce high octane, clean-burning gasoline. Many of the recent attempts to improve...the case for the hydroisomerization of straight chain paraffins. Currently in industry...with H2 during the catalytic reaction runs was required because hydrogen also takes...

2005-01-01T23:59:59.000Z

270

Oxygen Transport Ceramic Membranes Quarterly Report  

E-Print Network (OSTI)

/Reaction rates in Ion 21 Transport Membranes using Isotope Tracer and Transient Kinetic Techniques CONCLUSIONS 30Oxygen Transport Ceramic Membranes Quarterly Report January 2003 ­ March 2003 Principal Authors on the thermodynamic properties of the membrane materials are continued to develop a complete model for the membrane

Eagar, Thomas W.

271

Ninth International Workshop on Plant Membrane Biology  

SciTech Connect

This report is a compilation of abstracts from papers which were discussed at a workshop on plant membrane biology. Topics include: plasma membrane ATP-ases; plant-environment interactions, membrane receptors; signal transduction; ion channel physiology; biophysics and molecular biology; vaculor H+ pumps; sugar carriers; membrane transport; and cellular structure and function.

Not Available

1993-12-31T23:59:59.000Z

272

Chapter 1. Basic principles of membrane contactors  

Science Journals Connector (OSTI)

Publisher Summary This chapter discusses the basic principles of membrane contactors. The membrane contactors identify the membrane systems that are employed to keep two phases in contact. To avoid the mixing of the two phases, the operating pressures must be controlled. The pressure of the aqueous/polar phase has to be equal to or higher than the pressure of the wetting/filling phase. In membrane strippers and scrubbers, a liquid is in contact with a gas, the difference between the two systems being the direction in which the species are transferred: from the liquid to the gas and vice versa, respectively. In supported liquid membranes, the micropores of the membrane are filled by an organic phase and the membrane is located between two aqueous phases. Membrane distillation is the only example of membrane contactor where the driving force is related to a temperature gradient across the membrane. Osmotic distillation performs the same work of the membrane distillation but uses a different method for creating the partial pressure gradient. Membrane crystallizers represent a particular application of membrane and osmotic distillation. Membrane emulsifiers employ both hydrophobic and hydrophilic membranes for creating microemulsions. Membrane contactors can be also used to carry out catalytic reactions.

2005-01-01T23:59:59.000Z

273

Hydrogen purifier module with membrane support  

DOE Patents (OSTI)

A hydrogen purifier utilizing a hydrogen-permeable membrane to purify hydrogen from mixed gases containing hydrogen is disclosed. Improved mechanical support for the permeable membrane is described, enabling forward or reverse differential pressurization of the membrane, which further stabilizes the membrane from wrinkling upon hydrogen uptake.

A hydrogen purifier utilizing a hydrogen-permeable membrane to purify hydrogen from mixed gases containing hydrogen is disclosed. Improved mechanical support for the permeable membrane is described, enabling forward or reverse differential pressurization of the membrane, which further stabilizes the membrane from wrinkling upon hydrogen uptake.

2012-07-24T23:59:59.000Z

274

Oxygen Transport Ceramic Membranes  

SciTech Connect

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. In this report, in situ neutron diffraction was used to characterize the chemical and structural properties of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} (here after as L2SF55T) specimen, which was subject to measurements of neutron diffraction from room temperature to 900 C in N{sub 2}. Space group of R3c was found to result in a better refinement and is used in this study. The difference for crystal structure, lattice parameters and local crystal chemistry for LSFT nearly unchanged when gas environment switched from air to N{sub 2}. Stable crack growth studies on Dense OTM bars provided by Praxair were done at room temperature in air. A bridge-compression fixture was fabricated to achieve stable pre-cracks from Vickers indents. Post fracture evaluation indicated stable crack growth from the indent and a regime of fast fracture. Post-fracture X-ray data of the OTM fractured at 1000 C in environment were refined by FullProf code and results indicate a distortion of the parent cubic perovskite to orthorhombic structure with reduced symmetry. TGA-DTA studies on the post-fracture samples also indicated residual effect arising from the thermal and stress history of the samples. The thermal and chemical expansion of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} were studied at 800 {le} T {le} 1000 C and at {approx} 1 x 10{sup -15} {le} pO{sub 2} {le} 0.21 atm. The thermal expansion coefficient of the sample was calculated from the dilatometric analysis in the temperature range between room temperature and 1200 C in air. A series of isotope transients under air separation mode (small gradient) were completed on the membrane of LSCrF-2828 at 900 C. Low pO{sub 2} atmospheres based on with CO-CO{sub 2} mixtures have also been admitted to the delivery side of the LSCrF-2828 membrane to produce the gradients which exist under syngas generation conditions. The CO-CO{sub 2} mixtures have normal isotopic {sup 18}O abundances. The evolution of {sup 18}O on the delivery side in these experiments after an {sup 18}O pulse on the air side reveals a wealth of information about the oxygen transport processes.

S. Bandopadhyay; N. Nagabhushana; X.-D Zhou; Q. Cai; J. Yang; W.B. Yelon; W.J. James; H.U. Anderson; Alan Jacobson; C.A. Mims

2004-05-01T23:59:59.000Z

275

Membrane Process to Sequester CO2 from Power Plant Flue Gas  

NLE Websites -- All DOE Office Websites (Extended Search)

MeMbrane Process to sequester co MeMbrane Process to sequester co 2 froM Power Plant flue Gas Background Carbon dioxide emissions from coal-fired power plants are believed to contribute significantly to global warming climate change. The direct approach to address this problem is to capture the carbon dioxide in flue gas and sequester it underground. However, the high cost of separating and capturing CO 2 with conventional technologies prevents the adoption of this approach. This project investigates the technical and economic feasibility of a new membrane process to capture CO 2 from power plant flue gas. Description Direct CO 2 capture from power plant flue gas has been the subject of many studies. Currently, CO 2 capture with amine absorption seems to be the leading candidate technology-although membrane processes have been suggested. The principal

276

Wind effects on a stretched membrane heliostat  

SciTech Connect

Wind effects on stretched membrane heliostat were investigated in a boundary layer wind tunnel. The membrane response was measured at stow and representative operational conditions. It was found that both at the stow and operational conditions the mean response was much higher than the rms response. At stow conditions the largest response occurred near the leading edge of the membrane, while the rms response was the largest at the membrane center point. For the operational conditions, the largest mean and rms responses were found at the membrane centerpoint. The membrane response was significantly reduced by the membrane focusing induced through the internal underpressure.

Bienkiewicz, B. (Colorado State Univ., Fort Collins, CO (United States). Dept. of Civil Engineering)

1993-08-01T23:59:59.000Z

277

FY05 LDRD Final Report Molecular Engineering of Electrodialysis Membranes 03-ERD-060  

SciTech Connect

Using a combination of modeling and experimental work we have developed a new method for purifying water that uses less energy than conventional methods and that can be made selective for removing targeted contaminants. The method uses nanoporous membranes that are permselective for anion or cation transfer. Ion selectivity results from double layer overlap inside the pores such that they dominantly contain ions opposite in charge to the surface charge of the membrane. Membrane charge can be adjusted through functionalization. Experiments confirm membrane permselectivity and overall energy use less than that for conventional electrodialysis. The nanoporous membranes are used in a conventional electrodialysis configuration and can be incorporated in existing electrodialysis systems without modification. The technology merits further development and testing in real systems, and could result in a significant reduction in water treatment costs.

Bourcier, W; O'Brien, K; Sawvel, A; Johnson, M; Bettencourt, K; Letant, S; Felter, T; Langry, K; Wilson, B; Haslam, J; Schaldach, C; Sopchak, D

2006-02-22T23:59:59.000Z

278

Nanofiltration of Electrolyte Solutions by Sub-2nm Carbon Nanotube Membranes  

SciTech Connect

Both MD simulations and experimental studies have shown that liquid and gas flow through carbon nanotubes with nanometer size diameter is exceptionally fast. For applications in separation technology, selectivity is required together with fast flow. In this work, we use pressure-driven filtration experiments to study ion exclusion in silicon nitride/sub-2-nm CNT composite membranes as a function of solution ionic strength, pH, and ion valence. We show that carbon nanotube membranes exhibit significant ion exclusion at low salt concentration. Our results support a rejection mechanism dominated by electrostatic interactions between fixed membrane charges and mobile ions, while steric and hydrodynamic effects appear to be less important. Comparison with commercial nanofiltration membranes for water softening reveals that our carbon nanotube membranes provides far superior water fluxes for similar ion rejection capabilities.

Fornasiero, F; Park, H G; Holt, J K; Stadermann, M; Kim, S; In, J B; Grigoropoulos, C P; Noy, A; Bakajin, O

2008-03-13T23:59:59.000Z

279

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect

Conversion of natural gas to liquid fuels and chemicals is a major goal for the Nation as it enters the 21st Century. Technically robust and economically viable processes are needed to capture the value of the vast reserves of natural gas on Alaska's North Slope, and wean the Nation from dependence on foreign petroleum sources. Technologies that are emerging to fulfill this need are all based syngas as an intermediate. Syngas (a mixture of hydrogen and carbon monoxide) is a fundamental building block from which chemicals and fuels can be derived. Lower cost syngas translates directly into more cost-competitive fuels and chemicals. The currently practiced commercial technology for making syngas is either steam methane reforming (SMR) or a two-step process involving cryogenic oxygen separation followed by natural gas partial oxidation (POX). These high-energy, capital-intensive processes do not always produce syngas at a cost that makes its derivatives competitive with current petroleum-based fuels and chemicals.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2002-01-01T23:59:59.000Z

280

Renewable Energy Powered Membrane Technology. 1. Development and Characterization of a Photovoltaic Hybrid Membrane System   

E-Print Network (OSTI)

the unavailability of power in many such situations, renewable energy is an obvious solution to power such systems. However, renewable energy is an intermittent power supply and with regards to the performance of intermittently operated desalination systems, only...

Schäfer, Andrea; Broeckmann, Andreas; Richards, Bryce

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Sythhesis and Optimization of Hybrid Membrane Desalination Networks with Value Extraction  

E-Print Network (OSTI)

) ? (35) 29 In addition, a number of inequality constraints, that limits the maximum permissible salts contamination of final permeate product, the required maximum contamination of salts in brine I stream for the value extraction technology... Brine : Indices denoting property related to brine stream connected to a membrane unit Permeate : Indices denoting property related to permeate stream connected to a membrane unit or the final permeate stream vii Brine I : Indices denoting...

AlNouss, Ahmed M

2014-02-04T23:59:59.000Z

282

SWNT?MWNT Hybrid Architecture for Proton Exchange Membrane Fuel Cell Cathodes  

Science Journals Connector (OSTI)

SWNT?MWNT Hybrid Architecture for Proton Exchange Membrane Fuel Cell Cathodes ... A thin film of single-wall carbon nanotubes (SWNTs) and SWNT?multiwall carbon nanotube (MWNT) hybrids loaded with Pt have been evaluated as the cathode catalyst layer in proton exchange membrane fuel cells. ... Hydrogen, Fuel Cells & Infrastructure Technologies Program: Multi-Year Research, Development and Demonstration Plan: Planned Program Activities for 2003?2010; U.S. Department of Energy: Energy Efficiency and Renewable Energy: January 21, 2005. ...

Palanisamy Ramesh; Mikhail E. Itkis; Jason M. Tang; Robert C. Haddon

2008-05-28T23:59:59.000Z

283

Anisotropic surface tension of buckled fluid membrane  

E-Print Network (OSTI)

Solid sheets and fluid membranes exhibit buckling under lateral compression. Here, it is revealed that fluid membranes have anisotropic buckling surface tension contrary to solid sheets. Surprisingly, the surface tension perpendicular to the buckling direction shows stronger dependence than that parallel to it. Our theoretical predictions are supported by numerical simulations of a meshless membrane model. This anisotropic tension can be used to measure the membrane bending rigidity. It is also found phase synchronization occurs between multilayered buckled membranes.

Hiroshi Noguchi

2011-06-01T23:59:59.000Z

284

Technology Roadmaps  

Energy.gov (U.S. Department of Energy (DOE))

This page contains links to DOE's Technology Roadmaps, multi-year plans outlining solid-state lighting goals, research and development initiatives aimed at accelerating technology advances and...

285

Technology Development  

Science Journals Connector (OSTI)

In presenting this chapter on technology development, it must be stated that attempts to make an up-to-date technology survey are restricted, unfortunately, by the proprietary nature of recent advances, detail...

B. E. Conway

1999-01-01T23:59:59.000Z

286

An investigation of gas separation membranes for reduction of thermal treatment emissions  

SciTech Connect

Gas permeable membranes were evaluated for possible use as air pollution control devices on a fluidized bed catalytic incineration unit. The unit is a candidate technology for treatment of certain mixed hazardous and radioactive wastes at the Rocky Flats Plant. Cellulose acetate and polyimide membranes were tested to determine the permeance of typical off-gas components such as carbon dioxide, nitrogen, and oxygen. Multi-component permeation studies included gas mixtures containing light hydrocarbons. Experiments were also conducted to discover information about potential membrane degradation in the presence of organic compounds.

Stull, D.M.; Logsdon, B.W. [EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant; Pellegrino, J.J. [National Inst. of Standards and Technology, Gaithersburg, MD (United States)

1994-05-16T23:59:59.000Z

287

NETL: Gasification - Recovery Act: Scale-Up of Hydrogen Transport Membranes  

NLE Websites -- All DOE Office Websites (Extended Search)

Recovery Act: Scale-Up of Hydrogen Transport Membranes for IGCC and FutureGen Plants Recovery Act: Scale-Up of Hydrogen Transport Membranes for IGCC and FutureGen Plants Eltron Research & Development Inc. Project Number: FC26-05NT42469 Project Description The Eltron Hydrogen Transport Membrane (HTM) technology uses composite metal alloy materials to separate H2 from coal-derived syngas (a mixture of H2, CO, CO2, and steam). Carbon dioxide on the feed side of the membrane remains at high pressure and in a concentrated form suitable for capture and re-use or storage. The Eltron HTM system is an enabling technology for the production of high purity H2 and the capture of CO2 at high pressure that is applicable to future integrated gasification combined cycle (IGCC) and central station H2 production plants. These novel membranes have an operating temperature of 280 to 440 degrees Celsius (°C), which is well-matched with emerging coal gas cleaning technologies and has the potential to significantly improve the overall efficiency and process economics for future gasification-based power, fuels, and chemical production plants. Eltron's membranes can withstand differential pressures of up to 1,000 pounds per square inch gauge (psig) without structural failure, allowing for successful integration into advanced, high-pressure coal gasification plants.

288

Waste treatment by reverse osmosis and membrane processes: Industrial. (Latest citations from the EI compendex*plus database). Published Search  

SciTech Connect

The bibliography contains citations concerning the use of membranes in the treatment of industrial wastewaters. Reverse osmosis, ion exchange, electrodialysis, liquid membranes, and ultrafiltration techniques are described. Wastewater treatments for removal of metals, ammonia, sodium compounds, nitrates, fluorides, dyes, biologicals, and radioactive waste using membrane technology are discussed. Applications of this technology to the chemical, petrochemical, pulp, textile, steel, ore treatment, electro-plating, and other wastewater and groundwater-remediation industries are included.(Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

NONE

1995-09-01T23:59:59.000Z

289

Waste treatment by reverse osmosis and membrane processes: Industrial. (Latest citations from the EI Compendex*Plus database). Published Search  

SciTech Connect

The bibliography contains citations concerning the use of membranes in the treatment of industrial wastewaters. Reverse osmosis, ion exchange, electrodialysis, liquid membranes, and ultrafiltration techniques are described. Wastewater treatments for removal of metals, ammonia, sodium compounds, nitrates, fluorides, dyes, biologicals, and radioactive waste using membrane technology are discussed. Applications of this technology to the chemical, petrochemical, pulp, textile, steel, ore treatment, electro-plating, and other wastewater and groundwater-remediation industries are included. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1993-12-01T23:59:59.000Z

290

Waste treatment by reverse osmosis and membrane processes: Industrial. (Latest citations from the Compendex database). Published Search  

SciTech Connect

The bibliography contains citations concerning the use of membranes in the treatment of industrial wastewaters. Reverse osmosis, ion exchange, electrodialysis, liquid membranes, and ultrafiltration techniques are described. Wastewater treatments for removal of metals, ammonia, sodium compounds, nitrates, fluorides, dyes, biologicals, and radioactive waste using membrane technology are discussed. Applications of this technology to the chemical, petrochemical, pulp, textile, steel, ore treatment, electro-plating, and other wastewater and groundwater-remediation industries are included. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1993-05-01T23:59:59.000Z

291

Hydrogen Separation Membranes for Vision 21 Fossil Fuel Plants  

SciTech Connect

Eltron Research and team members CoorsTek, McDermott Technology, Sued Chemie, Argonne National Laboratory, and Oak Ridge National Laboratory are developing an environmentally benign, inexpensive, and efficient method for separating hydrogen from gas mixtures produced during industrial processes, such as coal gasification. This objective is being pursued using dense membranes based in part on Eltron-patented ceramic materials with a demonstrated ability for proton and electron conduction. The technical goals are being addressed by modifying single-phase and composite membrane composition and microstructure to maximize proton and electron conductivity without loss of material stability. Ultimately, these materials must enable hydrogen separation at practical rates under ambient and high-pressure conditions, without deactivation in the presence of feedstream components such as carbon dioxide, water, and sulfur. This project was motivated by the Department of Energy (DOE) National Energy Technology Laboratory (NETL) Vision 21 initiative which seeks to economically eliminate environmental concerns associated with the use of fossil fuels. The proposed technology addresses the DOE Vision 21 initiative in two ways. First, this process offers a relatively inexpensive solution for pure hydrogen separation that can be easily incorporated into Vision 21 fossil fuel plants. Second, this process could reduce the cost of hydrogen, which is a clean burning fuel under increasing demand as supporting technologies are developed for hydrogen utilization and storage. Additional motivation for this project arises from the potential of this technology for other applications. By appropriately changing the catalysts coupled with the membrane, essentially the same system can be used to facilitate alkane dehydrogenation and coupling, aromatics processing, and hydrogen sulfide decomposition.

Roark, Shane E.; Mackay, Richard; Sammells, Anthony F.

2001-11-06T23:59:59.000Z

292

NanoEner Technologies | Open Energy Information  

Open Energy Info (EERE)

NanoEner Technologies NanoEner Technologies Jump to: navigation, search Name NanoEner Technologies Place Fort Lauderdale, Florida Product Develops and markets nanomaterials and related nanotechnology processes that have applications in primary and rechargeable batteries, super capacitors, electronic devices, wires, sensors and fuel cell membranes. References NanoEner Technologies[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. NanoEner Technologies is a company located in Fort Lauderdale, Florida . References ↑ "NanoEner Technologies" Retrieved from "http://en.openei.org/w/index.php?title=NanoEner_Technologies&oldid=349020" Categories: Clean Energy Organizations

293

Separation of Olefin/Paraffin Mixtures with Carrier Facilitated Membrane Final Report  

SciTech Connect

This document describes the results of a DOE funded joint effort of Membrane Technology and Research Inc. (MTR), SRI International (SRI), and ABB Lummus (ABB) to develop facilitated transport membranes for olefin/paraffin separations. Currently, olefin/paraffin separation is done by distillation—an extremely energy-intensive process because of the low relative volatilities of olefins and paraffins. If facilitated transport membranes could be successfully commercialized, the potential energy savings achievable with this membrane technology are estimated to be 48 trillion Btu per year by the year 2020. We discovered in this work that silver salt-based facilitated transport membranes are not stable even in the presence of ideal olefin/paraffin mixtures. This decline in membrane performance appears to be caused by a previously unrecognized phenomenon that we have named olefin conditioning. As the name implies, this mechanism of performance degradation becomes operative once a membrane starts permeating olefins. This project is the first study to identify olefin conditioning as a significant factor impacting the performance of facilitated olefin transport membranes. To date, we have not identified an effective strategy to mitigate the impact of olefin conditioning. other than running at low temperatures or with low olefin feed pressures. In our opinion, this issue must be addressed before further development of facilitated olefin transport membranes can proceed. In addition to olefin conditioning, traditional carrier poisoning challenges must also be overcome. Light, hydrogen, hydrogen sulfide, and acetylene exposure adversely affect membrane performance through unwanted reaction with silver ions. Harsh poisoning tests with these species showed useful membrane lifetimes of only one week. These tests demonstrate a need to improve the stability of the olefin complexing agent to develop membranes with lifetimes satisfactory for commercial application. A successful effort to improve membrane coating solution stability resulted in the finding that membrane performance loss could be reversed for all poisoning cases except hydrogen sulfide exposure. This discovery offers the potential to extend membrane lifetime through cyclic regeneration. We also found that certain mixed carriers exhibited greater stability in reducing environments than exhibited by silver salt alone. These results offer promise that solutions to deal with carrier poisoning are possible. The main achievement of this program was the progress made in gaining a more complete understanding of the membrane stability challenges faced in the use of facilitated olefin transport membranes. Our systematic study of facilitated olefin transport uncovered the full extent of the stability challenge, including the first known identification of olefin conditioning and its impact on membrane development. We believe that significant additional fundamental research is required before facilitated olefin transport membranes are ready for industrial implementation. The best-case scenario for further development of this technology would be identification of a novel carrier that is intrinsically more stable than silver ions. If the stability problems could be largely circumvented by development of a new carrier, it would provide a clear breakthrough toward finally recognizing the potential of facilitated olefin transport. However, even if such a carrier is identified, additional development will be required to insure that the membrane matrix is a benign host for the olefin-carrier complexation reaction and shows good long-term stability.

Merkel, T.C.; Blanc, R.; Zeid, J.; Suwarlim, A.; Firat, B.; Wijmans, H.; Asaro, M. (SRI); Greene, M. (Lummus)

2007-03-12T23:59:59.000Z

294

Department of Engineering Technology Technology Education  

E-Print Network (OSTI)

Department of Engineering Technology Technology Education A Teacher Education Program New Jersey Institute of Technology #12;WHAT WILL YOU LEARN? Technology teachers teach problem-based learning utilizing math, science and technology principles. Technological studies involve students: · Designing

Bieber, Michael

295

Gelled Ionic Liquid-Based Membranes: Achieving a 10,000 GPU Permeance for Post-Combustion Carbon Capture with Gelled Ionic Liquid-Based Membranes  

SciTech Connect

IMPACCT Project: Alongside Los Alamos National Laboratory and the Electric Power Research Institute, CU-Boulder is developing a membrane made of a gelled ionic liquid to capture CO2 from the exhaust of coal-fired power plants. The membranes are created by spraying the gelled ionic liquids in thin layers onto porous support structures using a specialized coating technique. The new membrane is highly efficient at pulling CO2 out of coal-derived flue gas exhaust while restricting the flow of other materials through it. The design involves few chemicals or moving parts and is more mechanically stable than current technologies. The team is now working to further optimize the gelled materials for CO2 separation and create a membrane layer that is less than 1 micrometer thick.

None

2011-02-02T23:59:59.000Z

296

High Temperature Membrane & Advanced Cathode Catalyst Development  

SciTech Connect

Current project consisted of three main phases and eighteen milestones. Short description of each phase is given below. Table 1 lists program milestones. Phase 1--High Temperature Membrane and Advanced Catalyst Development. New polymers and advanced cathode catalysts were synthesized. The membranes and the catalysts were characterized and compared against specifications that are based on DOE program requirements. The best-in-class membranes and catalysts were downselected for phase 2. Phase 2--Catalyst Coated Membrane (CCM) Fabrication and Testing. Laboratory scale catalyst coated membranes (CCMs) were fabricated and tested using the down-selected membranes and catalysts. The catalysts and high temperature membrane CCMs were tested and optimized. Phase 3--Multi-cell stack fabrication. Full-size CCMs with the down-selected and optimized high temperature membrane and catalyst were fabricated. The catalyst membrane assemblies were tested in full size cells and multi-cell stack.

Protsailo, Lesia

2006-04-20T23:59:59.000Z

297

Universal Membrane Classification Scheme: Maximizing the Return on High Temperature PEM Membrane Research  

Energy.gov (U.S. Department of Energy (DOE))

This presentation on maximizing the return of high temperature PEM membrane research was given at the High Temperature Membrane Working Group Meeting in May 2007.

298

Solid state oxygen anion and electron mediating membrane and catalytic membrane reactors containing them  

DOE Patents (OSTI)

A process for production of synthesis gas employing a catalytic membrane reactor wherein the membrane comprises a mixed metal oxide material.

Schwartz, Michael (Boulder, CO); White, James H. (Boulder, CO); Sammells, Anthony F. (Boulder, CO)

2001-01-01T23:59:59.000Z

299

Production of permeable cellulose triacetate membranes  

DOE Patents (OSTI)

A phase inversion process for the preparation of cellulose triacetate (CTA) and regenerated cellulose membranes is disclosed. Such membranes are useful as supports for liquid membranes in facilitated transport processes, as microfiltration membranes, as dialysis or ultrafiltration membranes, and for the preparation of ion-selective electrodes. The process comprises the steps of preparing a casting solution of CTA in a solvent comprising a mixture of cyclohexanone and methylene chloride, casting a film from the casting solution, and immersing the cast film in a methanol bath. The resulting CTA membrane may then be hydrolyzed to regenerated cellulose using conventional techniques.

Johnson, B.M.

1986-12-23T23:59:59.000Z

300

Production of permeable cellulose triacetate membranes  

DOE Patents (OSTI)

A phase inversion process for the preparation of cellulose triacetate (CTA) and regenerated cellulose membranes is disclosed. Such membranes are useful as supports for liquid membranes in facilitated transport processes, as microfiltration membranes, as dialysis or ultrafiltration membranes, and for the preparation of ion-selective electrodes. The process comprises the steps of preparing a casting solution of CTA in a solvent comprising a mixture of cyclohexanone and methylene chloride, casting a film from the casting solution, and immersing the cast film in a methanol bath. The resulting CTA membrane may then be hydrolyzed to regenerated cellulose using conventional techniques.

Johnson, Bruce M. (Bend, OR)

1986-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Membrane applications to control VOC emissions  

SciTech Connect

A thin film composite membrane to separate and recover organic vapors is briefly described. The membrane is designed for end of pipe installation with a separation efficiency of greater than 90%. The main components of the membrane system are feed compressor, vacuum pump, and membrane modules. The paper focuses on operating characteristics of the membrane, and provides data on various ideal selectivities for organics; dependence of toluene/nitrogen selectivity and stage cut on flow velocity; and dependence of plant capacity, recovery rate, pressure ratio, stage cut, retentate concentration, and specific energy consumption on membrane area for gasoline vapor separation process conditions. 5 refs., 6 figs., 1 tab.

Ohlrogge, K.; Wind, J. [GKSS Research Center, Geesthacht (Germany)

1996-12-31T23:59:59.000Z

302

Solvent-resistant microporous polymide membranes  

DOE Patents (OSTI)

An asymmetric microporous membrane with exceptional solvent resistance and highly desirable permeability is disclosed. The membrane is made by a solution-casting or solution-spinning process from a copolyamic acid comprising the condensation reaction product in a solvent of at least three reactants selected from certain diamines and dianhydrides and post-treated to imidize and in some cases cross-link the copolyamic acid. The membrane is useful as an uncoated membrane for ultrafiltration, microfiltration, and membrane contactor applications, or may be used as a support for a permselective coating to form a composite membrane useful in gas separations, reverse osmosis, nanofiltration, pervaporation, or vapor permeation.

Miller, W.K.; McCray, S.B.; Friesen, D.T.

1998-03-10T23:59:59.000Z

303

Solvent-resistant microporous polymide membranes  

DOE Patents (OSTI)

An asymmetric microporous membrane with exceptional solvent resistance and highly desirable permeability is disclosed. The membrane is made by a solution-casting or solution-spinning process from a copolyamic acid comprising the condensation reaction product in a solvent of at least three reactants selected from certain diamines and dianhydrides and post-treated to imidize and in some cases cross-link the copolyamic acid. The membrane is useful as an uncoated membrane for ultrafiltration, microfiltration, and membrane contactor applications, or may be used as a support for a permselective coating to form a composite membrane useful in gas separations, reverse osmosis, nanofiltration, pervaporation, or vapor permeation.

Miller, Warren K. (Bend, OR); McCray, Scott B. (Bend, OR); Friesen, Dwayne T. (Bend, OR)

1998-01-01T23:59:59.000Z

304

ADVANCED HYDROGEN TRANSPORT MEMBRANES FOR VISION 21 FOSSIL FUEL PLANTS  

SciTech Connect

Eltron Research Inc., and team members CoorsTek, McDermott Technology, Inc., Sued Chemie, Argonne National Laboratory and Oak Ridge National Laboratory are developing an environmentally benign, inexpensive, and efficient method for separating hydrogen from gas mixtures produced during industrial processes, such as coal gasification. This project was motivated by the National Energy Technology Laboratory (NETL) Vision 21 initiative which seeks to economically eliminate environmental concerns associated with the use of fossil fuels. This objective is being pursued using dense membranes based in part on Eltron-patented ceramic materials with a demonstrated ability for proton and electron conduction. The technical goals are being addressed by modifying single-phase and composite membrane composition and microstructure to maximize proton and electron conductivity without loss of material stability. Ultimately, these materials must enable hydrogen separation at practical rates under ambient and high-pressure conditions, without deactivation in the presence of feedstream components such as carbon dioxide, water, and sulfur. During this quarter, mixed proton/electron conductivity and hydrogen transport was measured as a function of metal phase content for a range of ceramic/metal (cermet) compositions. It was found that optimum performance occurred at 44 wt.% metal content for all compositions tested. Although each cermet appeared to have a continuous metal phase, it is believed that hydrogen transport increased with increasing metal content partially due to beneficial surface catalyst characteristics resulting from the metal phase. Beyond 44 wt.% there was a reduction in hydrogen transport most likely due to dilution of the proton conducting ceramic phase. Hydrogen separation rates for 1-mm thick cermet membranes were in excess of 0.1 mL/min/cm{sup 2}, which corresponded to ambipolar conductivities between 1 x 10{sup -3} and 8 x 10{sup -3} S/cm. Similar results were obtained for multiphase ceramic membranes comprised of a proton-conducting perovskite and electron conducting metal oxide. These multi-phase ceramic membranes showed only a slight improvement in hydrogen transport upon addition of a metal phase. The highest hydrogen separation rates observed this quarter were for a cermet membrane containing a hydrogen transport metal. A 1-mm thick membrane of this material achieved a hydrogen separation rate of 0.3 mL/min/cm{sup 2} at only 700 C, which increased to 0.6 mL/min/cm{sup 2} at 950 C.

Shane E. Roark; Tony F. Sammells; Richard A. Mackay; Lyrik Y. Pitzman; Alexandra Z. LaGuardia; Tom F. Barton; Sara L. Rolfe; Richard N. Kleiner; James E. Stephan; Mike J. Holmes; Aaron L. Wagner

2001-10-30T23:59:59.000Z

305

Membrane process for CO[sub 2] removal from NGLs gets trial in Louisiana plant  

SciTech Connect

Marathon Oil Co. has developed a membrane gas-processing technology for CO[sub 2] removal that lowers operating costs by reducing membrane surface-area requirements. Additionally, the technology lowers maintenance costs by eliminating the need for mechanical equipment, thereby increasing reliability. The process treats the separated NGL stream instead of the raw inlet-gas: instead of 200 MMcfd of inlet gas, only 3,000 b/d of liquid must be treated. Furthermore, large swings in inlet-gas volumes do not affect operation of the unit. The paper describes the separation process, and test results.

Thornton, D. (Marathon Oil Co., Cotton Valley, LA (United States))

1994-11-14T23:59:59.000Z

306

Membrane contactors (NDSX and EPT): an innovative alternative for the treatment of effluents containing metallic pollutants  

Science Journals Connector (OSTI)

This work presents an overview of membrane-based solvent extraction technologies using membrane contactors as an innovative alternative for the remediation of effluents containing metallic pollutants. The discussion is focused on the description of Non-Dispersive Solvent Extraction (NDSX) and Emulsion Pertraction Technologies (EPTs). Three case studies are reported to demonstrate the viability of NDSX and EPT for the removal and recovery of metallic pollutants present in aqueous streams: remediation of polluted groundwaters containing hexavalent chromium; recovery of zinc from acid spent pickling solutions; recovery of copper used as homogeneous catalyst in Wet Peroxide Oxidation (WPO) processes.

Eugenio Bringas; M. Fresnedo San Roman; A. Miren Urtiaga; Inmaculada Ortiz

2012-01-01T23:59:59.000Z

307

Spectroscopic studies of tryptophan and membrane- associated peptides  

E-Print Network (OSTI)

Thermodynamics of membrane protein folding measured byThermodynamics of Membrane Protein Folding: Lessons from theKim, Thermodynamics of membrane protein folding measured by

Schlamadinger, Diana Elizabeth

2011-01-01T23:59:59.000Z

308

Membrane and MEA Accelerated Stress Test Protocols | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Membrane and MEA Accelerated Stress Test Protocols Membrane and MEA Accelerated Stress Test Protocols This presentation on fuel cell membrane and MEA stress test protocols was...

309

Available Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

6 News Stories (and older) 6 News Stories (and older) 12.21.2005___________________________________________________________________ Genzyme acquires gene therapy technology invented at Berkeley Lab. Read more here. 07.19.2005 _________________________________________________________________ Symyx, a start up company using Berkeley Lab combinatorial chemistry technology licensed by the Technology Transfer Department and developed by Peter Schultz and colleagues in the Materials Sciences Division, will be honored with Frost & Sullivan's 2005 Technology Leadership Award at their Excellence in Emerging Technologies Awards Banquet for developing enabling technologies and methods to aid better, faster and more efficient R&D. Read more here. 07.11.2005 _________________________________________________________________ Nanosys, Inc., a Berkeley Lab startup, is among the solar nanotech companies investors along Sand Hill Road in Menlo Park hope that thinking small will translate into big profits. Read more here.

310

Fuel Technologies  

Energy.gov (U.S. Department of Energy (DOE))

Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland.

311

Layering Technologies  

Science Journals Connector (OSTI)

Planar technology requires that thin layers of materials be formed and patterned sequentially, commencing with a flat rigid substrate. The key aspects of each layer are its Thi...

Ivor Brodie; Julius J. Muray

1992-01-01T23:59:59.000Z

312

ADVANCED HYDROGEN TRANSPORT MEMBRANES FOR VISION 21 FOSSIL FUEL PLANTS  

SciTech Connect

Eltron Research Inc., and team members CoorsTek, Sued Chemie, and Argonne National Laboratory are developing an environmentally benign, inexpensive, and efficient method for separating hydrogen from gas mixtures produced during industrial processes, such as coal gasification. This project was motivated by the National Energy Technology Laboratory (NETL) Vision 21 initiative which seeks to economically eliminate environmental concerns associated with the use of fossil fuels. This objective is being pursued using dense membranes based in part on Eltron-patented ceramic materials with a demonstrated ability for proton and electron conduction. The technical goals are being addressed by modifying composite membrane composition and microstructure to maximize hydrogen permeation without loss of material stability. Ultimately, these materials must enable hydrogen separation at practical rates under ambient and high-pressure conditions, without deactivation in the presence of feedstream components such as carbon dioxide, water, and sulfur. During this quarter, a composite metal membrane based on an inexpensive hydrogen permeable metal achieved permeation rates in excess of 25 mL/min/cm{sup 2}. Preliminary attempts to incorporate this metal into a cermet were successful, and a thick cermet membrane (0.83 mm) with 40 vol.% metal phase achieved a permeation rate of nearly 0.4 mL/min/cm{sup 2}. Increasing the metal phase content and decreasing membrane thickness should significantly increase permeation, while maintaining the benefits derived from cermets. Two-phase ceramic/ceramic composite membranes had low hydrogen permeability, likely due to interdiffusion of constituents between the phases. However, these materials did demonstrate high resistance to corrosion, and might be good candidates for other composite membranes. Temperature-programmed reduction measurements indicated that model cermet materials absorbed 2.5 times as much hydrogen than the pure ceramic analogs. This characteristic, in addition to higher electron conductivity, likely explains the relatively high permeation for these cermets. Incorporation of catalysts with ceramics and cermets increased hydrogen uptake by 800 to more than 900%. Finally, new high-pressure seals were developed for cermet membranes that maintained a pressure differential of 250 psi. This result indicated that the approach for high-pressure seal development could be adapted for a range of compositions. Other items discussed in this report include mechanical testing, new proton conducting ceramics, supported thin films, and alkane to olefin conversion.

Shane E. Roark; Anthony F. Sammells; Richard A. Mackay; Lyrik Y. Pitzman; Thomas A. Zirbel; Stewart R. Schesnack; Thomas F. Barton; Sara L. Rolfe; U. (Balu) Balachandran; Richard N. Kleiner; James E. Stephan; Frank E. Anderson; Aaron L. Wagner; Jon P. Wagner

2003-01-30T23:59:59.000Z

313

Protein Flips Lipids Across Membranes  

NLE Websites -- All DOE Office Websites (Extended Search)

Protein Flips Lipids Across Membranes Print Protein Flips Lipids Across Membranes Print Found ubiquitously in both bacteria and humans, membrane proteins of the adenosine triphosphate (ATP)-binding cassette (ABC) transporter family have been implicated in both antibiotic and cancer-drug resistance. The mechanisms used by these proteins to expel toxins from cells therefore represent key targets for the development of drugs designed to combat the growing problem of multidrug resistance. Toward this end, researchers from The Scripps Research Institute have succeeded in crystallizing MsbA-an ABC transporter protein-together with a substrate (the molecule to be transported) and a hydrolyzed (spent) form of the nucleotide ATP, the transporter's source of chemical energy. The resulting molecular complex is caught at a moment following the transporter's "power stroke," the force-generating part of the transport cycle. This snapshot suggests a mechanism by which the substrate molecule gets flipped head-over-tail from one side of the membrane to the other, on its way out of the cell.

314

Protein Flips Lipids Across Membranes  

NLE Websites -- All DOE Office Websites (Extended Search)

Protein Flips Lipids Across Protein Flips Lipids Across Membranes Protein Flips Lipids Across Membranes Print Wednesday, 26 October 2005 00:00 Found ubiquitously in both bacteria and humans, membrane proteins of the adenosine triphosphate (ATP)-binding cassette (ABC) transporter family have been implicated in both antibiotic and cancer-drug resistance. The mechanisms used by these proteins to expel toxins from cells therefore represent key targets for the development of drugs designed to combat the growing problem of multidrug resistance. Toward this end, researchers from The Scripps Research Institute have succeeded in crystallizing MsbA-an ABC transporter protein-together with a substrate (the molecule to be transported) and a hydrolyzed (spent) form of the nucleotide ATP, the transporter's source of chemical energy. The resulting molecular complex is caught at a moment following the transporter's "power stroke," the force-generating part of the transport cycle. This snapshot suggests a mechanism by which the substrate molecule gets flipped head-over-tail from one side of the membrane to the other, on its way out of the cell.

315

Protein Flips Lipids Across Membranes  

NLE Websites -- All DOE Office Websites (Extended Search)

Protein Flips Lipids Across Membranes Print Protein Flips Lipids Across Membranes Print Found ubiquitously in both bacteria and humans, membrane proteins of the adenosine triphosphate (ATP)-binding cassette (ABC) transporter family have been implicated in both antibiotic and cancer-drug resistance. The mechanisms used by these proteins to expel toxins from cells therefore represent key targets for the development of drugs designed to combat the growing problem of multidrug resistance. Toward this end, researchers from The Scripps Research Institute have succeeded in crystallizing MsbA-an ABC transporter protein-together with a substrate (the molecule to be transported) and a hydrolyzed (spent) form of the nucleotide ATP, the transporter's source of chemical energy. The resulting molecular complex is caught at a moment following the transporter's "power stroke," the force-generating part of the transport cycle. This snapshot suggests a mechanism by which the substrate molecule gets flipped head-over-tail from one side of the membrane to the other, on its way out of the cell.

316

Composite carbon-ceramic hollow fiber membranes  

SciTech Connect

This work describes the synthesis of a new type of composite membrane by applying porous ceramic layers onto the surface of carbon membranes using the sol-gel process. The pore structure is discussed.

Linkov, V.M.; Kaiser, K.; Sanderson, R.; Lapidus, A.L. [Rossiiskaya Akademiya, Nauk (Russian Federation)

1994-12-31T23:59:59.000Z

317

membrane-mtr | netl.doe.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

developing a new type of membrane contactor (or mega-module) to separate carbon dioxide (CO2) from power plant flue gas. This module's membrane area is 500 square meters, 20 to 25...

318

Energy Recovery Ventilator Membrane Efficiency Testing  

E-Print Network (OSTI)

A test setup was designed and built to test energy recovery ventilator membranes. The purpose of this test setup was to measure the heat transfer and water vapor transfer rates through energy recover ventilator membranes and find their effectiveness...

Rees, Jennifer Anne

2013-05-07T23:59:59.000Z

319

Single Molecule Probes of Lipid Membrane Structure  

E-Print Network (OSTI)

structural metrics with function in biological membranes. Single-molecule fluorescence studies were used to measure membrane structure at the molecular level. Several groups have shown that polarized total internal reflection fluorescence microscopy (PTIRF...

Livanec, Philip W.

2009-12-14T23:59:59.000Z

320

Electrodialysis with Bipolar Membranes for Sustainable Development  

Science Journals Connector (OSTI)

Electrodialysis with Bipolar Membranes for Sustainable Development ... A mathematical model of a typical three-compartment electrodialysis with bipolar membranes (EDBM) process has been developed to calculate the energy consumption and total cost of the process. ...

Chuanhui Huang; Tongwen Xu

2006-07-22T23:59:59.000Z

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Table II: Technical Targets for Membranes: Automotive  

Energy.gov (U.S. Department of Energy (DOE))

Technical targets for fuel cell membranes in automotive applications defined by the High Temperature Working Group (February 2003).

322

Table IV: Technical Targets for Membranes: Stationary  

Energy.gov (U.S. Department of Energy (DOE))

"Technical targets for fuel cell membranes in stationary applications defined by the High Temperature Working Group (February 2003). "

323

Agenda: High Temperature Membrane Working Group Meeting  

Energy.gov (U.S. Department of Energy (DOE))

Agenda for the High Temperature Membrane Working Group (HTMWG) meeting on May 18, 2009, in Arlington, Virginia

324

Glass Technology  

Science Journals Connector (OSTI)

... WE have received from the Department of Glass Technology, University of Sheffield, a copy of vol. ii. of “Experimental Researches ... that department. The papers included have already appeared in the Journal of the Society of Glass Technology. They range over a somewhat wide field of the ...

1920-08-23T23:59:59.000Z

325

NREL: Technology Deployment - Technology Acceleration  

NLE Websites -- All DOE Office Websites (Extended Search)

assistance to federal and private industry to help address market barriers to sustainable energy technologies. Learn more about NREL's work in the following areas:...

326

Journal of Membrane Science 239 (2004) 1726 Highly conductive ordered heterogeneous ion-exchange membranes  

E-Print Network (OSTI)

in the matrix required for reasonable ion transport through the membrane is 50­70 wt.% [2Journal of Membrane Science 239 (2004) 17­26 Highly conductive ordered heterogeneous ion-exchange membranes are used in electrodialysis (ED) as ion-selective membranes and in power sources (such as fuel

Freger, Viatcheslav "Slava"

327

Vehicle Technologies Office: Vehicle Technologies Office Recognizes  

NLE Websites -- All DOE Office Websites (Extended Search)

Vehicle Technologies Vehicle Technologies Office Recognizes Outstanding Researchers to someone by E-mail Share Vehicle Technologies Office: Vehicle Technologies Office Recognizes Outstanding Researchers on Facebook Tweet about Vehicle Technologies Office: Vehicle Technologies Office Recognizes Outstanding Researchers on Twitter Bookmark Vehicle Technologies Office: Vehicle Technologies Office Recognizes Outstanding Researchers on Google Bookmark Vehicle Technologies Office: Vehicle Technologies Office Recognizes Outstanding Researchers on Delicious Rank Vehicle Technologies Office: Vehicle Technologies Office Recognizes Outstanding Researchers on Digg Find More places to share Vehicle Technologies Office: Vehicle Technologies Office Recognizes Outstanding Researchers on AddThis.com...

328

Vehicle Technologies Office: Graduate Automotive Technology Education  

NLE Websites -- All DOE Office Websites (Extended Search)

Deployment Deployment Site Map Printable Version Share this resource Send a link to Vehicle Technologies Office: Graduate Automotive Technology Education (GATE) to someone by E-mail Share Vehicle Technologies Office: Graduate Automotive Technology Education (GATE) on Facebook Tweet about Vehicle Technologies Office: Graduate Automotive Technology Education (GATE) on Twitter Bookmark Vehicle Technologies Office: Graduate Automotive Technology Education (GATE) on Google Bookmark Vehicle Technologies Office: Graduate Automotive Technology Education (GATE) on Delicious Rank Vehicle Technologies Office: Graduate Automotive Technology Education (GATE) on Digg Find More places to share Vehicle Technologies Office: Graduate Automotive Technology Education (GATE) on AddThis.com...

329

Building Technologies Office: Emerging Technologies Activities  

NLE Websites -- All DOE Office Websites (Extended Search)

Emerging Technologies Emerging Technologies Activities to someone by E-mail Share Building Technologies Office: Emerging Technologies Activities on Facebook Tweet about Building Technologies Office: Emerging Technologies Activities on Twitter Bookmark Building Technologies Office: Emerging Technologies Activities on Google Bookmark Building Technologies Office: Emerging Technologies Activities on Delicious Rank Building Technologies Office: Emerging Technologies Activities on Digg Find More places to share Building Technologies Office: Emerging Technologies Activities on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Appliances Research Building Envelope Research Windows, Skylights, & Doors Research Space Heating & Cooling Research Water Heating Research

330

NETL: News Release - New Oxygen-Production Technology Proving Successful  

NLE Websites -- All DOE Office Websites (Extended Search)

22, 2009 22, 2009 New Oxygen-Production Technology Proving Successful Ceramic Membrane Enables Efficient, Cost-Effective Co-Production of Power and Oxygen Washington, D.C. -The Office of Fossil Energy's National Energy Technology Laboratory (NETL) has partnered with Air Products and Chemicals Inc. of Allentown, Penn. to develop the Ion Transport Membrane (ITM) Oxygen, a revolutionary new oxygen-production technology that requires less energy and offers lower capital costs than conventional technologies. ITM Oxygen will enhance the performance of integrated gasification combined cycle (IGCC) power plants, as well as other gasification-based processes. The technology will also enhance the economics of oxy-fired combustion technologies, making it an attractive option for the capture of carbon dioxide from existing coal-fired power plants.

331

High temperature ceramic membrane reactors for coal liquid upgrading  

SciTech Connect

Membrane reactors are today finding extensive applications for gas and vapor phase catalytic reactions (see discussion in the introduction and recent reviews by Armor [92], Hsieh [93] and Tsotsis et al. [941]). There have not been any published reports, however, of their use in high pressure and temperature liquid-phase applications. The idea to apply membrane reactor technology to coal liquid upgrading has resulted from a series of experimental investigations by our group of petroleum and coal asphaltene transport through model membranes. Coal liquids contain polycyclic aromatic compounds, which not only present potential difficulties in upgrading, storage and coprocessing, but are also bioactive. Direct coal liquefaction is perceived today as a two-stage process, which involves a first stage of thermal (or catalytic) dissolution of coal, followed by a second stage, in which the resulting products of the first stage are catalytically upgraded. Even in the presence of hydrogen, the oil products of the second stage are thought to equilibrate with the heavier (asphaltenic and preasphaltenic) components found in the feedstream. The possibility exists for this smaller molecular fraction to recondense with the unreacted heavy components and form even heavier undesirable components like char and coke. One way to diminish these regressive reactions is to selectively remove these smaller molecular weight fractions once they are formed and prior to recondensation. This can, at least in principle, be accomplished through the use of high temperature membrane reactors, using ceramic membranes which are permselective for the desired products of the coal liquid upgrading process. An additional incentive to do so is in order to eliminate the further hydrogenation and hydrocracking of liquid products to undesirable light gases.

Tsotsis, T.T. (University of Southern California, Los Angeles, CA (United States). Dept. of Chemical Engineering); Liu, P.K.T. (Aluminum Co. of America, Pittsburgh, PA (United States)); Webster, I.A. (Unocal Corp., Los Angeles, CA (United States))

1992-01-01T23:59:59.000Z

332

PEM Electrolyzer Incorporating an Advanced Low Cost Membrane  

Energy Savers (EERE)

Virginia Tech University (Academic)- Membrane Development Collaborations 3M Fuel Cell Components Program- NSTF Catalyst & Membrane Entegris - Carbon Cell Separators...

333

A New Concept for the Fabrication of Hydrogen Selective Silica Membranes  

NLE Websites -- All DOE Office Websites (Extended Search)

New CoNCept for the fAbriCAtioN of New CoNCept for the fAbriCAtioN of hydrogeN SeleCtive SiliCA MeMbrANeS Background As stated in the National Research Council report on Novel Approaches to Carbon Management, a novel membrane is needed that can achieve the separation of carbon dioxide (CO 2 ) and hydrogen (H 2 ) at a high temperature and pressure. Extensive efforts over the last several decades have explored high temperature H 2 -selective membranes made of silicon dioxide (SiO 2 ) and other oxides, palladium (Pd) and other metals or alloys and, more recently, various zeolites and non-aluminosilicate molecular sieves. Although promising separation results have been reported for many of them, these technologies, they all suffer from high production costs for membrane fabrication and from long term stability problems. This project revisits

334

The kinetics of water sorption in Nafion membranes: a small-angle neutron scattering  

Science Journals Connector (OSTI)

The optimization of the water management in proton exchange membrane fuel cells is a major issue for the large-scale development of this technology. In addition to the operating conditions, the membrane water sorption and transport processes obviously control the water management. The main objective of this work is to provide new experimental evidence based on the use of the small-angle neutron scattering (SANS) technique in order to allow a better understanding of water sorption processes. SANS spectra were recorded for membranes equilibrated with either water vapor or liquid. Sorption kinetics data were determined and the SANS spectra were analyzed using the method developed for extracting water concentration profiles across the membrane in operating fuel cells. The water concentration profiles across the membrane are completely flat, which indicates that the water diffusion within the membrane is not the limiting process. This result provides new insight into the numerous data published on these properties. For the first time, the swelling kinetics of a Nafion membrane immersed in liquid water is studied and a complete swelling is obtained in less than 1 min.

Gérard Gebel; Sandrine Lyonnard; Hakima Mendil-Jakani; Arnaud Morin

2011-01-01T23:59:59.000Z

335

Waste treatment by reverse osmosis and membrane processes. January 1980-January 1992 (Citations from the NTIS Data Base). Rept. for Jan 80-Jan 92  

SciTech Connect

The bibliography contains citations concerning the use of membranes and reverse osmosis to treat wastes. Ion exchange, electrodialysis, and ultrafiltration processes are described. Removal of metals, sodium compounds, nitrates, fluorides, dyes, and radioactive waste using membranes is examined. Wastewater treatment for chemical, pulp, textile, and steel mills using this technology is included. (Contains 63 citations with title list and subject index.)

Not Available

1991-12-01T23:59:59.000Z

336

Process for restoring membrane permeation properties  

DOE Patents (OSTI)

A process for restoring the selectivity of high-flee-volume, glassy polymer membranes for condensable components over less-condensable components or non-condensable components of a gas mixture. The process involves exposing the membrane to suitable sorbent vapor, such as propane or butane, thereby reopening the microvoids that make up the free volume. The selectivity of an aged membrane may be restored to 70-100% of its original value. The selectivity of a membrane which is known to age over time can also be maintained by keeping the membrane in a vapor environment when it is not in use.

Pinnau, Ingo (Palo Alto, CA); Toy, Lora G. (San Francisco, CA); Casillas, Carlos G. (San Jose, CA)

1997-05-20T23:59:59.000Z

337

Process for restoring membrane permeation properties  

DOE Patents (OSTI)

A process is described for restoring the selectivity of high-free-volume, glassy polymer membranes for condensable components over less-condensable components or non-condensable components of a gas mixture. The process involves exposing the membrane to suitable sorbent vapor, such as propane or butane, thereby reopening the microvoids that make up the free volume. The selectivity of an aged membrane may be restored to 70--100% of its original value. The selectivity of a membrane which is known to age over time can also be maintained by keeping the membrane in a vapor environment when it is not in use. 8 figs.

Pinnau, I.; Toy, L.G.; Casillas, C.G.

1997-05-20T23:59:59.000Z

338

Building Technologies Office: Emerging Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Creating the Next Generation of Energy Efficient Technology Creating the Next Generation of Energy Efficient Technology The Emerging Technologies team partners with national laboratories, industry, and universities to advance research, development, and commercialization of energy efficient and cost effective building technologies. These partnerships help foster American ingenuity to develop cutting-edge technologies that have less than 5 years to market readiness, and contribute to the goal to reduce energy consumption by at least 50%. Sandia Cooler's innovative, compact design combines a fan and a finned metal heat sink into a single element, efficiently transferring heat in microelectronics and reducing energy use. Supporting Innovative Research to Help Reduce Energy Use and Advance Manufacturing Learn More

339

Distributed Reforming of Renewable Liquids via Water Splitting using Oxygen Transport Membrane (OTM) (Presentation)  

NLE Websites -- All DOE Office Websites (Extended Search)

Reforming of Renewable Reforming of Renewable Liquids via Water Splitting using Oxygen Transport Membrane (OTM) * U. (Balu) Balachandran, T. H. Lee, C. Y. Park, and S. E. Dorris Energy Systems Division E-mail: balu@anl.gov * Work supported by the Hydrogen, Fuel Cells, and Infrastructure Technologies Program of DOE's Office of Energy Efficiency and Renewable Energy Presented at the Bio-derived Liquids Working Group (BILIWG) Meeting, Nov. 6, 2007. BILIWG Meeting, Nov. 6, 2007 2 Objective & Rationale Objective: Develop compact dense ceramic membrane reactors that enable the efficient and cost-effective production of hydrogen by reforming renewable liquid fuels using pure oxygen produced by water splitting and transported by an OTM. Rationale: Membrane technology provides the means to attack barriers to the

340

NOVEL COMPOSITE MEMBRANES FOR HYDROGEN SEPARATION IN GASIFICATION PROCESSES IN VISION 21 ENERGY PLANTS  

SciTech Connect

ITN Energy Systems, along with its team members, the Idaho National Engineering and Environmental Laboratory, Nexant Consulting, Argonne National Laboratory and Praxair, propose to develop a novel composite membrane structure for hydrogen separation as a key technology module within the future ''Vision 21'' fossil fuel plants. The ITN team is taking a novel approach to hydrogen separation membrane technology where fundamental engineering material development is fully integrated into fabrication designs; combining functionally graded materials, monolithic module concept and plasma spray manufacturing techniques. The technology is based on the use of Ion Conducting Ceramic Membranes (ICCM) for the selective transport of hydrogen. The membranes are comprised of composites consisting of a proton conducting ceramic and a second metallic phase to promote electrical conductivity. Functional grading of the membrane components allows the fabrication of individual membrane layers of different materials, microstructures and functions directly into a monolithic module. Plasma spray techniques, common in industrial manufacturing, are well suited for fabricating ICCM hydrogen separation modules inexpensively, yielding compact membrane modules that are amenable to large scale, continuous manufacturing with low costs. This program will develop and evaluate composite membranes and catalysts for hydrogen separation. Components of the monolithic modules will be fabricated by plasma spray processing. The engineering and economic characteristics of the proposed ICCM approach, including system integration issues, will also be assessed. This will result in a complete evaluation of the technical and economic feasibility of ICCM hydrogen separation for implementation within the ''Vision 21'' fossil fuel plant. The ICCM hydrogen separation technology is targeted for use within the gasification module of the ''Vision 21'' fossil fuel plant. The high performance and low-cost manufacturing of the proposed technology will benefit the deployment of ''Vision 21'' fossil fuel plant processes by improving the energy efficiency, flexibility and environmental performance of these plants. Of particular importance is that this technology will also produce a stream of pure carbon dioxide. This allows facile sequestration or other use of this greenhouse gas. These features will benefit the U.S. in allowing for the continued use of domestic fossil fuels in a more energy efficient and environmentally acceptable manner.

Michael Schwartz

2003-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

NOVEL COMPOSITE MEMBRANES FOR HYDROGEN SEPARATION IN GASIFICATION PROCESSES IN VISION 21 ENERGY PLANTS  

SciTech Connect

ITN Energy Systems, along with its team members, the Idaho National Engineering and Environmental Laboratory, Nexant Consulting, Argonne National Laboratory and Praxair, propose to develop a novel composite membrane structure for hydrogen separation as a key technology module within the future ''Vision 21'' fossil fuel plants. The ITN team is taking a novel approach to hydrogen separation membrane technology where fundamental engineering material development is fully integrated into fabrication designs; combining functionally graded materials, monolithic module concept and plasma spray manufacturing techniques. The technology is based on the use of Ion Conducting Ceramic Membranes (ICCM) for the selective transport of hydrogen. The membranes are comprised of composites consisting of a proton conducting ceramic and a second metallic phase to promote electrical conductivity. Functional grading of the membrane components allows the fabrication of individual membrane layers of different materials, microstructures and functions directly into a monolithic module. Plasma spray techniques, common in industrial manufacturing, are well suited for fabricating ICCM hydrogen separation modules inexpensively, yielding compact membrane modules that are amenable to large scale, continuous manufacturing with low costs. This program will develop and evaluate composite membranes and catalysts for hydrogen separation. Components of the monolithic modules will be fabricated by plasma spray processing. The engineering and economic characteristics of the proposed ICCM approach, including system integration issues, will also be assessed. This will result in a complete evaluation of the technical and economic feasibility of ICCM hydrogen separation for implementation within the ''Vision 21'' fossil fuel plant. The ICCM hydrogen separation technology is targeted for use within the gasification module of the ''Vision 21'' fossil fuel plant. The high performance and low-cost manufacturing of the proposed technology will benefit the deployment of ''Vision 21'' fossil fuel plant processes by improving the energy efficiency, flexibility and environmental performance of these plants. Of particular importance is that this technology will also produce a stream of pure carbon dioxide. This allows facile sequestration or other use of this greenhouse gas. These features will benefit the U.S. in allowing for the continued use of domestic fossil fuels in a more energy efficient and environmentally acceptable manner.

Michael Schwartz

2003-07-01T23:59:59.000Z

342

NOVEL COMPOSITE MEMBRANES FOR HYDROGEN SEPARATION IN GASIFICATION PROCESSES IN VISION 21 ENERGY PLANTS  

SciTech Connect

ITN Energy Systems, along with its team members, the Idaho National Engineering and Environmental Laboratory, Nexant Consulting, Argonne National Laboratory and Praxair, propose to develop a novel composite membrane structure for hydrogen separation as a key technology module within the future ''Vision 21'' fossil fuel plants. The ITN team is taking a novel approach to hydrogen separation membrane technology where fundamental engineering material development is fully integrated into fabrication designs; combining functionally graded materials, monolithic module concept and plasma spray manufacturing techniques. The technology is based on the use of Ion Conducting Ceramic Membranes (ICCM) for the selective transport of hydrogen. The membranes are comprised of composites consisting of a proton conducting ceramic and a second metallic phase to promote electrical conductivity. Functional grading of the membrane components allows the fabrication of individual membrane layers of different materials, microstructures and functions directly into a monolithic module. Plasma spray techniques, common in industrial manufacturing, are well suited for fabricating ICCM hydrogen separation modules inexpensively, yielding compact membrane modules that are amenable to large scale, continuous manufacturing with low costs. This program will develop and evaluate composite membranes and catalysts for hydrogen separation. Components of the monolithic modules will be fabricated by plasma spray processing. The engineering and economic characteristics of the proposed ICCM approach, including system integration issues, will also be assessed. This will result in a complete evaluation of the technical and economic feasibility of ICCM hydrogen separation for implementation within the ''Vision 21'' fossil fuel plant. The ICCM hydrogen separation technology is targeted for use within the gasification module of the ''Vision 21'' fossil fuel plant. The high performance and low-cost manufacturing of the proposed technology will benefit the deployment of ''Vision 21'' fossil fuel plant processes by improving the energy efficiency, flexibility and environmental performance of these plants. Of particular importance is that this technology will also produce a stream of pure carbon dioxide. This allows facile sequestration or other use of this greenhouse gas. These features will benefit the U.S. in allowing for the continued use of domestic fossil fuels in a more energy efficient and environmentally acceptable manner.

Michael Schwartz

2004-01-01T23:59:59.000Z

343

NETL: Bench-Scale Development of a Hybrid Membrane-Absorption CO2 Capture  

NLE Websites -- All DOE Office Websites (Extended Search)

Bench-Scale Development of a Hybrid Membrane-Absorption CO2 Capture Process Bench-Scale Development of a Hybrid Membrane-Absorption CO2 Capture Process Project No.: DE-FE0013118 Membrane Technology and Research (MTR) is developing and evaluating a hybrid membrane-absorption CO2 capture system. This work builds on prior DOE-funded work and combines MTR's Polaris(tm) membrane, in a low-pressure-drop, large area, plate-and-frame module, with UT Austin's piperazine (PZ) solvent and advanced, high-temperature and pressure regeneration technology. Preliminary estimates indicate that this hybrid system could lower the regeneration energy by 30 percent compared to that required with 30 weight percent monoethanolamine (MEA). MTR is evaluating two variations of the hybrid design consisting of the cross-flow Polaris membrane, which enriches flue gas to approximately 20 percent CO2, and an advanced 5 molal PZ advanced flash stripper with cold-rich bypass. The flash stripper will be optimized to take advantage of the higher CO2 concentration. In the first variation, the two systems are operated in series; in the second, the flue gas flow is split and treated by each system in parallel. The first phase of this project will include an examination of both hybrid configurations, using an integrated process model and a preliminary techno-economic assessment. In the second phase, MTR will manufacture and test a low pressure drop, large-area membrane module and UT Austin will modify their 0.1 MWe pilot plant and operate it under simulated series and parallel configurations. Based on the model and test results, the most promising configuration will be identified. In the final stage of the project, the membrane module will be integrated into the pilot plant where the fully integrated hybrid system, in its most promising cost optimized configuration, will be tested on simulated flue gas.

344

Ion transport membrane module and vessel system  

DOE Patents (OSTI)

An ion transport membrane system comprising (a) a pressure vessel having an interior, an exterior, an inlet, and an outlet; (b) a plurality of planar ion transport membrane modules disposed in the interior of the pressure vessel and arranged in series, each membrane module comprising mixed metal oxide ceramic material and having an interior region and an exterior region, wherein any inlet and any outlet of the pressure vessel are in flow communication with exterior regions of the membrane modules; and (c) one or more gas manifolds in flow communication with interior regions of the membrane modules and with the exterior of the pressure vessel. The ion transport membrane system may be utilized in a gas separation device to recover oxygen from an oxygen-containing gas or as an oxidation reactor to oxidize compounds in a feed gas stream by oxygen permeated through the mixed metal oxide ceramic material of the membrane modules.

Stein, VanEric Edward (Allentown, PA); Carolan, Michael Francis (Allentown, PA); Chen, Christopher M. (Allentown, PA); Armstrong, Phillip Andrew (Orefield, PA); Wahle, Harold W. (North Canton, OH); Ohrn, Theodore R. (Alliance, OH); Kneidel, Kurt E. (Alliance, OH); Rackers, Keith Gerard (Louisville, OH); Blake, James Erik (Uniontown, OH); Nataraj, Shankar (Allentown, PA); Van Doorn, Rene Hendrik Elias (Obersulm-Willsbach, DE); Wilson, Merrill Anderson (West Jordan, UT)

2012-02-14T23:59:59.000Z

345

Ion transport membrane module and vessel system  

DOE Patents (OSTI)

An ion transport membrane system comprising (a) a pressure vessel having an interior, an exterior, an inlet, and an outlet; (b) a plurality of planar ion transport membrane modules disposed in the interior of the pressure vessel and arranged in series, each membrane module comprising mixed metal oxide ceramic material and having an interior region and an exterior region, wherein any inlet and any outlet of the pressure vessel are in flow communication with exterior regions of the membrane modules; and (c) one or more gas manifolds in flow communication with interior regions of the membrane modules and with the exterior of the pressure vessel.The ion transport membrane system may be utilized in a gas separation device to recover oxygen from an oxygen-containing gas or as an oxidation reactor to oxidize compounds in a feed gas stream by oxygen permeated through the mixed metal oxide ceramic material of the membrane modules.

Stein, VanEric Edward (Allentown, PA); Carolan, Michael Francis (Allentown, PA); Chen, Christopher M. (Allentown, PA); Armstrong, Phillip Andrew (Orefield, PA); Wahle, Harold W. (North Canton, OH); Ohrn, Theodore R. (Alliance, OH); Kneidel, Kurt E. (Alliance, OH); Rackers, Keith Gerard (Louisville, OH); Blake, James Erik (Uniontown, OH); Nataraj, Shankar (Allentown, PA); van Doorn, Rene Hendrik Elias (Obersulm-Willsbach, DE); Wilson, Merrill Anderson (West Jordan, UT)

2008-02-26T23:59:59.000Z

346

Photo-switchable membrane and method  

DOE Patents (OSTI)

Switchable gas permeation membranes in which a photo-switchable low-molecular-weight liquid crystalline (LC) material acts as the active element, and a method of making such membranes. Different LC eutectic mixtures were doped with mesogenic azo dyes and infused into track-etched porous membranes with regular cylindrical pores. Photo-induced isothermal phase changes in the imbibed mesogenic material afforded large, reversible changes in the permeability of the photo-switchable membrane to nitrogen. For example, membranes imbibed with a photo-switchable cyanobiphenyl LC material demonstrated low permeability in the nematic state, while the photo-generated isotropic state demonstrated a 16.times.-greater sorption coefficient. Both states obey a high linear sorption behavior in accordance with Henry's Law. In contrast, membranes imbibed with a photo-switchable phenyl benzoate LC material showed the opposite permeability behavior to the biphenyl-imbibed membrane, along with nonlinear sorption behavior.

Marshall, Kenneth L; Glowacki, Eric

2013-05-07T23:59:59.000Z

347

ADVANCED HYDROGEN TRANSPORT MEMBRANES FOR VISION 21 FOSSIL FUEL PLANTS  

SciTech Connect

Eltron Research Inc. and their team members are developing an environmentally benign, inexpensive, and efficient method for separating hydrogen from gas mixtures produced during industrial processes, such as coal gasification. This project was motivated by the National Energy Technology Laboratory (NETL) Vision 21 initiative which seeks to economically eliminate environmental concerns associated with the use of fossil fuels. This objective is being pursued using dense membranes based in part on Eltron-patented ceramic materials with a demonstrated ability for proton and electron conduction. The technical goals are being addressed by modifying single-phase and composite membrane composition and microstructure to maximize proton and electron conductivity without loss of material stability. Ultimately, these materials must enable hydrogen separation at practical rates under ambient and high-pressure conditions, without deactivation in the presence of feedstream components such as carbon dioxide, water, and sulfur. During this quarter, new cermet compositions were tested that demonstrated similar performance to previous materials. A 0.5-mm thick membrane achieved at H{sub 2} transport rate of 0.2 mL/min/cm{sup 2} at 950 C, which corresponded to an ambipolar conductivity of 3 x 10{sup -3} S/cm. Although these results were equivalent to those for other cermet compositions, this new composition might be useful if it demonstrates improved chemical or mechanical stability. Ceramic/ceramic composite membranes also were fabricated and tested; however, some reaction did occur between the proton- and electron-conducting phases, which likely compromised conductivity. This sample only achieved a H{sub 2} transport rate of {approx} 0.006 mL/min/cm{sup 2} and an ambipolar conductivity of {approx}4 x 10{sup -4} S/cm. Chemical stability tests were continued, and candidate ceramic membranes were found to react slightly with carbon monoxide under extreme testing conditions. A cermet compositions did not show any reaction with carbon monoxide, but a thick layer of carbon formed on the membrane surface. The most significant technical accomplishment this quarter was a new high-pressure seal composition. This material maintained a pressure differential across the membrane of {approx} 280 psi at 800 C, and is still in operation.

Shane E. Roark; Anthony F. Sammells; Richard A. Mackay; Lyrik Y. Pitzman; Thomas A. Zirbel; Thomas F. Barton; Sara L. Rolfe; U. (Balu) Balachandran; Richard N. Kleiner; James E. Stephan; Frank E. Anderson; George Farthing; Dan Rowley; Tim R. Armstrong; M.K. Ferber; Aaron L. Wagner; Jon P. Wagner

2002-07-30T23:59:59.000Z

348

SEPARATION OF HYDROGEN AND CARBON DIOXIDE USING A NOVEL MEMBRANE REACTOR IN ADVANCED FOSSIL ENERGY CONVERSION PROCESS  

SciTech Connect

Inorganic membrane reactors offer the possibility of combining reaction and separation in a single operation at high temperatures to overcome the equilibrium limitations experienced in conventional reactor configurations. Such attractive features can be advantageously utilized in a number of potential commercial opportunities, which include dehydrogenation, hydrogenation, oxidative dehydrogenation, oxidation and catalytic decomposition reactions. However, to be cost effective, significant technological advances and improvements will be required to solve several key issues which include: (a) permselective thin solid film, (b) thermal, chemical and mechanical stability of the film at high temperatures, and (c) reactor engineering and module development in relation to the development of effective seals at high temperature and high pressure. In this project, we are working on the development and application of palladium and palladium-silver alloy thin-film composite membranes in membrane reactor-separator configuration for simultaneous production and separation of hydrogen and carbon dioxide at high temperature. From our research on Pd-composite membrane, we have demonstrated that the new membrane has significantly higher hydrogen flux with very high perm-selectivity than any of the membranes commercially available. The steam reforming of methane by equilibrium shift in Pd-composite membrane reactor is being studied to demonstrate the potential application this new development. We designed and built a membrane reactor to study the reforming reaction. A two-dimensional pseudo-homogeneous reactor model was developed to study the performance of the membrane reactor parametrically. The important results are presented in this report.

Shamsuddin Illias

2002-06-10T23:59:59.000Z

349

Technology Analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

* Heavy Vehicle Technologies * Heavy Vehicle Technologies * Multi-Path Transportation Futures * Idling Studies * EDrive Vehicle Monthly Sales Transportation Research and Analysis Computing Center Working With Argonne Contact TTRDC Technology Analysis truck Heavy vehicle techologies are one subject of study. Research Reducing Greenhouse Gas Emissions from U.S. Transportation Heavy Vehicle Technologies Multi-Path Transportation Futures Study Idling Studies Light Duty Electric Drive Vehicles Monthly Sales Updates Lithium-Ion Battery Recycling and Life Cycle Analysis Reports Propane Vehicles: Status, Challenges, and Opportunities (pdf; 525 kB) Natural Gas Vehicles: Status, Barriers, and Opportunities (pdf; 696 kB) Regulatory Influences That Will Likely Affect Success of Plug-in Hybrid and Battery Electric Vehicles (pdf; 1.02 MB)

350

Coal Technology  

Science Journals Connector (OSTI)

Several large demonstrations of FBC technology for electrical power generation have proven ... -MW(e) atmospheric pressure circulating fluidized-bed boiler at the Colorado–Ute Electric Association's...14 ...

2003-01-01T23:59:59.000Z

351

Haemocompatibility and ion exchange capability of nanocellulose polypyrrole membranes intended for blood purification  

Science Journals Connector (OSTI)

...highly purified water. The increasing...haemodialysis membranes and dialysis technology that...following groups: small water-soluble compounds...difficult to remove by dialysis. The failure to...during dialysis treatments [1]. However...extraction [11] and electric energy storage...

2012-01-01T23:59:59.000Z

352

NETL: Gasification - Development of Ion-Transport Membrane Oxygen  

NLE Websites -- All DOE Office Websites (Extended Search)

Feed Systems Feed Systems Recovery Act: Development of Ion-Transport Membrane Oxygen Technology for Integration in IGCC and Other Advanced Power Generation Systems Air Products and Chemicals, Inc. Project Number: FC26-98FT40343 Project Description Air Products and Chemicals, Inc. is developing, scaling-up, and demonstrating a novel air separation technology for large-scale production of oxygen (O2) at costs that are approximately one-third lower than conventional cryogenic plants. An Ion Transport Membrane (ITM) Oxygen plant co-produces power and oxygen. A phased technology RD&D effort is underway to demonstrate all necessary technical and economic requirements for scale-up and industrial commercialization. The ITM Oxygen production technology is a radically different approach to producing high-quality tonnage oxygen and to enhance the performance of integrated gasification combined cycle and other advanced power generation systems. Instead of cooling air to cryogenic temperatures, oxygen is extracted from air at temperatures synergistic with power production operations. Process engineering and economic evaluations of integrated gasification combined cycle (IGCC) power plants comparing ITM Oxygen with a state-of-the-art cryogenic air separation unit are aimed to show that the installed capital cost of the air separation unit and the installed capital of IGCC facility are significantly lower compared to conventional technologies, while improving power plant output and efficiency. The use of low-cost oxygen in combustion processes would provide cost-effective emission reduction and carbon management opportunities. ITM Oxygen is an enabling module for future plants for producing coal derived shifted synthesis gas (a mixture of hydrogen [H2] and carbon dioxide [CO2]) ultimately for producing clean energy and fuels. Oxygen-intensive industries such as steel, glass, non-ferrous metallurgy, refineries, and pulp and paper may also realize cost and productivity benefits as a result of employing ITM Oxygen.

353

2011 Alkaline Membrane Fuel Cell Workshop Final Report  

SciTech Connect

A workshop addressing the current state-of-the-art in alkaline membrane fuel cells (AMFCs) was held May 8-9, 2011, at the Crystal Gateway Marriott in Arlington, Virginia. This workshop was the second of its kind, with the first being held December 11-13, 2006, in Phoenix, Arizona. The 2011 workshop and associated workshop report were created to assess the current state of AMFC technology (taking into account recent advances), investigate the performance potential of AMFC systems across all possible power ranges and applications, and identify the key research needs for commercial competitiveness in a variety of areas.

Pivovar, B.

2012-02-01T23:59:59.000Z

354

On the performance of the ASM 150 stressed membrane heliostat  

SciTech Connect

A single element, 150 m{sup 2} stressed-membrane central receiver heliostat was designed and manufactured by private German companies engaged in the development of commercial central receiver technology. It was installed at the Spanish-German solar test site, the Plataforma Solar de Almeria (PSA) near Tabernas in southern Spain in spring `95 (Haeger, M. et al., 1995). It is being evaluated together with two Spanish glass-metal heliostats in the frame of an extensive test program through 1996. First results of the test program are the subject of this paper. Results of beam quality measurements, performance tests of the focusing system and power consumption data are presented.

Weinrebe, G. [Plataforma Solar de Almeria, Tabernas (Spain); Schmitz-Goeb, M. [L and C Steinmueller, Gummersbach (Germany); Schiel, W. [Schlaich Bergermann and Partner, Stuttgart (Germany)

1996-12-31T23:59:59.000Z

355

9 - Microporous silica membranes: fundamentals and applications in membrane reactors for hydrogen separation  

Science Journals Connector (OSTI)

Abstract: This chapter discusses the research and development of membrane reactors, incorporating microporous silica-based membranes, specifically for hydrogen production. Microporous silica membranes are first introduced alongside a discussion of relevant gas transport mechanisms, membrane performance parameters, membrane reactor designs and membrane reactor performance metrics. This is followed by an in-depth analysis of the various research investigations where silica membrane reactors have been used to produce hydrogen and/or syngas from hydrocarbon reforming reactions. Of particular importance here is the hydrothermal instability of silica-based membranes at the required operating temperatures and so the chapter closes by presenting the future research trends and industrial design challenges and considerations of silica-based membrane reactors.

S. Smart; J. Beltramini; J.C. Diniz da Costa; S.P. Katikaneni; T. Pham

2013-01-01T23:59:59.000Z

356

PAVEMENT TECHNOLOGY UPDATE This Technology Transfer Program  

E-Print Network (OSTI)

PAVEMENT TECHNOLOGY UPDATE This Technology Transfer Program publication is funded by the Division to them in California. TECHNOLOGY TRANSFER PROGRAM MAY 2011, VOL. 3, NO. 1 California's Transition

California at Berkeley, University of

357

Membrane-controlled processes for the energy-efficient conversion of sludges to fuels and marketable chemicals  

SciTech Connect

Studies were carried out on the concentration of primary and secondary sludges by ultrafiltration, and the operation of a membrane-assisted anaerobic digester to treat these sludges. Auxiliary devices including water-spilling and membrane solvent extraction were tested for their feasibility in the ehhancement of digester operations and the recovery of valuable byproducts. It was shown that membrane-facilitated digestion can increase the rate of these processes by a factor of ten, together with a substantial decrease in the amount going to waste, and with the ultrafiltration permeate containing appreciable concentrations of valuable byproducts which could be concentrated and recovered using a combination of other membrane technologies. The utility of electrodialytic water-splitting and membrane solvent extraction was demonstrated. All of this was accomplished with a small three-liter bench-scale digester, the operation of which presented many problems because of its very small size and the difficulty in handling real sewage sludges.

None

1982-03-01T23:59:59.000Z

358

Dynamical Observations of Membrane Proteins: The Case of Bacteriorhodopsin  

SciTech Connect

A new x-ray methodology, Diffracted X-ray Tracking (DXT), has been proven to be a valuable tool in observing intramolecular conformational changes of individual single molecules in real time and space. In order to achieve DXT, the fabrication of dispersive nanocrystals is one of the most important technologies, because DXT system monitors the diffracted x-ray (Laue) spots from nanocrystals labeled with single bio-molecules. In this study, we fabricated one-dimensional gold nanocrystals with an average diameter size of 16 nm using vacuum evaporation. Furthermore, using these nanocrystals, we succeeded in observing normal Brownian motions and momentary structural changes of a single-membrane protein (Bacteriorhodopsin: BR) in a membrane due to the expression of its function. The average movement of the momentarily structural changes in the 35th residue of BR was 76 {+-} 48 pm, and this agrees with estimated movements from known x-ray crystallography data. This result is an important step toward realizing in-vivo observations of single-molecular conformational changes in membrane proteins.

Okumura, Yasuaki [Department of Biomolecular Science and Technology, Shinshu University, Ueda, Nagano 386-8567 (Japan); Life and Environmental Science Div., Japan Synchrotron Radiation Research Institute, SPring-8, 1-1-1 Kouto Mikazuki-cho, Sayo-gun, Hyogo 679-5198 (Japan); CREST-Sasaki Team, Japan Science and Technology Corporation (JST), Tachikawa 190-0012 (Japan); Oka, Toshihiko [Life and Environmental Science Div., Japan Synchrotron Radiation Research Institute, SPring-8, 1-1-1 Kouto Mikazuki-cho, Sayo-gun, Hyogo 679-5198 (Japan); Taniguchi, Yoshio [Department of Biomolecular Science and Technology, Shinshu University, Ueda, Nagano 386-8567 (Japan); Sasaki, Yuji C. [Life and Environmental Science Div., Japan Synchrotron Radiation Research Institute, SPring-8, 1-1-1 Kouto Mikazuki-cho, Sayo-gun, Hyogo 679-5198 (Japan); CREST-Sasaki Team, Japan Science and Technology Corporation (JST), Tachikawa 190-0012 (Japan)

2004-05-12T23:59:59.000Z

359

DOE Fuel Cell Technologies Office Record 14012: Fuel Cell System Cost – 2013  

Energy.gov (U.S. Department of Energy (DOE))

This program record from the U.S. Department of Energy's Fuel Cell Technologies Office provides information about the cost of automotive polymer electrolyte membrane (PEM) fuel cell systems.

360

Technology Transfer  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Efficiency & Renewable and Energy - Commercialization Energy Efficiency & Renewable and Energy - Commercialization Deployment SBIR/STTR - Small Business Innovation Research and Small Business Technology Transfer USEFUL LINKS Contract Opportunities: FBO.gov FedConnect.net Grant Opportunities DOE Organization Chart Association of University Technology Managers (AUTM) Federal Laboratory Consortium (FLC) Feedback Contact us about Tech Transfer: Mary.McManmon@science.doe.gov Mary McManmon, 202-586-3509 link to Adobe PDF Reader link to Adobe Flash player Licensing Guide and Sample License The Technology Transfer Working Group (TTWG), made up of representatives from each DOE Laboratory and Facility, recently created a Licensing Guide and Sample License [762-KB PDF]. The Guide will serve to provide a general understanding of typical contract terms and provisions to help reduce both

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
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361

Bench-Scale Development of a Hybrid Membrane-Absorption CO{sub 2} Capture Process: Preliminary Cost Assessment  

SciTech Connect

This report describes a study of capture costs for a hybrid membrane-absorption capture system based on Membrane Technology and Research, Inc. (MTR)’s low-pressure membrane contactors and the University of Texas at Austin’s 5 m piperazine (PZ) Advanced Flash Stripper (AFS; 5 m PZ AFS) based CO2 capture system. The report is submitted for NETL review, and may be superseded by a final topical report on this topic that will be submitted to satisfy the Task 2 report requirement of the current project (DE-FE0013118).

Freeman, Brice; Kniep, Jay; Pingjiao, Hao; Baker, Richard; Rochelle, Gary; Chen, Eric; Frailie, Peter; Ding, Junyuan; Zhang, Yue

2014-03-31T23:59:59.000Z

362

Technology Application Centers: Facilitating Technology Transfer  

E-Print Network (OSTI)

transfer plus technology application. A&C Enercom has learned from experience that technology deployment will not occur unless utilities achieve both technology transfer (e.g, the dissemination of information) and technology application (e.g., the direct...

Kuhel, G. J.

363

Environmental assessment of a membrane-based air separation for a coal-fired oxyfuel power plant  

Science Journals Connector (OSTI)

Abstract CO2 reduction from fossil-fired power plants can be achieved by carbon dioxide capture and storage (CCS). Among different CO2 capture technologies for power plants the oxyfuel power plant concept is a promising option. High temperature ceramic membranes for oxygen production have the potential to reduce the associated efficiency losses significantly compared to conventional air separation using cryogenic techniques. Focus of this paper is the environmental performance of membrane-based oxygen production for oxyfuel power plant technology. Included into the analysis are the production of the perovskite membrane (BSCF=Ba0.5Sr0.5Co0.8Fe0.2O3??), the incorporation into a steel module, and the integration of several modules into an oxyfuel power plant. The membrane-based oxygen production is compared to the conventional cryogenic air separation in oxyfuel power plants in an ecological way. The evaluation is performed using life cycle assessment (LCA) methodology from “cradle to grave”. The share in the overall environmental impacts of respective life cycle elements like membrane and module production but also coal supply processes as well as the operation of the oxyfuel power plant are identified. Sensitivity analyses referring to life-time, permeability and housing conditions of the membranes set benchmarks for further membrane development.

Andrea Schreiber; Josefine Marx; Petra Zapp

2013-01-01T23:59:59.000Z

364

Hybrid Solvent-Membrane CO2 Capture: A Solvent/Membrane Hybrid Post-combustion CO2 Capture Process for Existing Coal-Fired Power Plants  

SciTech Connect

IMPACCT Project: The University of Kentucky is developing a hybrid approach to capturing CO2 from the exhaust gas of coal-fired power plants. In the first, CO2 is removed as flue gas is passed through an aqueous ammonium-based solvent. In the second, carbon-rich solution from the CO2 absorber is passed through a membrane that is designed to selectively transport the bound carbon, enhancing its concentration on the permeate side. The team’s approach would combine the best of both membrane- and solventbased carbon capture technologies. Under the ARPA-E award, the team is enabling the membrane operation to be a drop-in solution.

None

2010-07-01T23:59:59.000Z

365

Manufacturing technology  

SciTech Connect

The specific goals of the Manufacturing Technology thrust area are to develop an understanding of fundamental fabrication processes, to construct general purpose process models that will have wide applicability, to document our findings and models in journals, to transfer technology to LLNL programs, industry, and colleagues, and to develop continuing relationships with industrial and academic communities to advance our collective understanding of fabrication processes. Advances in four projects are described here, namely Design of a Precision Saw for Manufacturing, Deposition of Boron Nitride Films via PVD, Manufacturing and Coating by Kinetic Energy Metallization, and Magnet Design and Application.

Blaedel, K.L.

1997-02-01T23:59:59.000Z

366

Advanced membrane electrode assemblies for fuel cells  

DOE Patents (OSTI)

A method of preparing advanced membrane electrode assemblies (MEA) for use in fuel cells. A base polymer is selected for a base membrane. An electrode composition is selected to optimize properties exhibited by the membrane electrode assembly based on the selection of the base polymer. A property-tuning coating layer composition is selected based on compatibility with the base polymer and the electrode composition. A solvent is selected based on the interaction of the solvent with the base polymer and the property-tuning coating layer composition. The MEA is assembled by preparing the base membrane and then applying the property-tuning coating layer to form a composite membrane. Finally, a catalyst is applied to the composite membrane.

Kim, Yu Seung; Pivovar, Bryan S

2014-02-25T23:59:59.000Z

367

Waste treatment by reverse osmosis and membrane processes: Industrial. (Latest citations from the EI Compendex*plus database). NewSearch  

SciTech Connect

The bibliography contains citations concerning the use of membranes in the treatment of industrial wastewaters. Reverse osmosis, ion exchange, electrodialysis, liquid membranes, and ultrafiltration techniques are described. Wastewater treatments for removal of metals, ammonia, sodium compounds, nitrates, fluorides, dyes, biologicals, and radioactive waste using membrane technology are discussed. Applications of this technology to the chemical, petrochemical, pulp, textile, steel, ore treatment, electro-plating, and other wastewater and groundwater-remediation industries are included. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1994-10-01T23:59:59.000Z

368

MULTI-POLLUTANT CONTROL USING MEMBRANE--BASED UP-FLOW WET ELECTROSTATIC PRECIPITATION  

SciTech Connect

This is the Final Report of the ''Multi-Pollutant Control Using Membrane-Based Up-flow Wet Electrostatic Precipitation'' project funded by the US Department of Energy's National Energy Technology Laboratory under DOE Award No. DE-FC26-02NT41592 to Croll-Reynolds Clean Air Technologies (CRCAT). In this 18 month project, CRCAT and its team members conducted detailed emission tests of metallic and new membrane collection material within a wet electrostatic precipitator (WESP) at First Energy's Penn Power's Bruce Mansfield (BMP) plant in Shippingport, Pa. The Membrane WESP was designed to be as similar as the metallic WESP in terms of collection area, air-flow, and electrical characteristics. Both units are two-field units. The membrane unit was installed during the 2nd and 3rd quarters of 2003. Testing of the metallic unit was performed to create a baseline since the Mansfield plant had installed selective catalytic reduction equipment for NOx control and a sodium bisulfate injection system for SO3 control during the spring of 2003. Tests results on the metallic WESP were consistent with previous testing for PM2.5, SO3 mist and mercury. Testing on the membrane WESP demonstrated no adverse impact and equivalent removal efficiencies as that of the metallic WESP. Testing on both units was performed at 8,000 acfm and 15,000 acfm. Summary results are shown.

James Reynolds

2004-10-29T23:59:59.000Z

369

NOVEL COMPOSITE MEMBRANES FOR HYDROGEN SEPARATION IN GASIFICATION PROCESSES IN VISION 21 ENERGY PLANTS  

SciTech Connect

This report describes the work performed, accomplishments and conclusion obtained from the project entitled ''Novel Composite Membranes for Hydrogen Separation in Gasification Processes in Vision 21 Energy Plants'' under the United States Department of Energy Contract DE-FC26-01NT40973. ITN Energy Systems was the prime contractor. Team members included: the Idaho National Engineering and Environmental Laboratory; Nexant Consulting; Argonne National Laboratory and Praxair. The objective of the program was to develop a novel composite membrane structure for hydrogen separation as a key technology module within the future ''Vision 21'' fossil fuel plants. The separation technology module is targeted for use within the gasification module of the ''Vision 21'' fossil fuel plant. The high performance and low-cost manufacturing of the proposed technology will benefit the deployment of ''Vision 21'' fossil fuel plant processes by improving the energy efficiency, flexibility and environmental performance of these plants. Of particular importance is that this technology will also produce a stream of pure carbon dioxide. This allows facile sequestration or other use of this greenhouse gas. These features will benefit the U.S. in allowing for the continued use of domestic fossil fuels in a more energy efficient and environmentally acceptable manner. The program developed and evaluated composite membranes and catalysts for hydrogen separation. Components of the monolithic modules were fabricated by plasma spray processing. The engineering and economic characteristics of the proposed Ion Conducting Ceramic Membrane (ICCM) approach, including system integration issues, were also assessed. This resulted in a comprehensive evaluation of the technical and economic feasibility of integration schemes of ICCM hydrogen separation technology within Vision 21 fossil fuel plants. Several results and conclusion were obtained during this program. In the area of materials synthesis, novel pyrochlore-based proton conductors were identified, synthesized and characterized. They exhibited conductivity as high as 0.03 S/cm at 900 C. Long-term stability under CO{sub 2} and H{sub 2} atmospheres was also demonstrated. In the area of membrane fabrication by plasma spray processing, the initial results showed that the pyrochlore materials could be processed in a spray torch. Although leak-tight membranes were obtained, cracking, most likely due to differences in thermal expansion, remained a problem. More modeling and experimental work can be used to solve this problem. Finally the techno-economic analyses showed that the ITN ICCM approach for separating H{sub 2} is comparable to conventional pressure swing adsorption (PSA) technology in efficiency and economics. Enhanced membrane flux and lower operating temperatures may make the ICCM approach superior to PSA.

Michael Schwartz

2004-12-01T23:59:59.000Z

370

Novel Composite Membranes for Hydrogen Separation in Gasification Processes in Vision 21 Energy Plants  

SciTech Connect

ITN Energy Systems, Inc. (ITN) and its partners, the Idaho National Engineering and Environmental Laboratory, Argonne National Laboratory, Nexant Consulting, LLC and Praxair, Inc. are developing composite membranes for hydrogen separation as a key technology module within the future ''Vision 21'' fossil fuel plants. The ITN team is pursuing a novel approach to hydrogen separation membrane technology where fundamental engineering material development is fully integrated into module fabrication designs; combining functionally-graded materials, monolithic module concept and thermal spray manufacturing techniques. The technology is based on the use of Ion Conducting Ceramic Membranes (ICCM) for the selective transport of hydrogen. The membranes are comprised of composites consisting of a proton conducting ceramic and a second metallic phase to promote electrical conductivity. Functional grading of the membrane components allows for the fabrication of individual membrane layers of different materials, microstructures and functions directly into a monolithic module. Plasma spray techniques, common in industrial manufacturing, are well suited for fabricating ICCM hydrogen separation modules inexpensively, yielding compact membrane modules that are amenable to large scale, continuous manufacturing techniques with low costs. The engineering and economic characteristics of the proposed ICCM approach, including system integration issues, are being assessed. This will result in an evaluation of the technical and economic feasibility of the proposed ICCM hydrogen separation approach for implementation within the ''Vision 21'' fossil fuel plant. The ICCM hydrogen separation technology is targeted for use within the gasification module of the ''Vision 21'' fossil fuel plant. The high performance and low-cost manufacturing of the proposed technology will benefit the deployment of ''Vision 21'' fossil fuel plant processes by improving the energy efficiency, flexibility and environmental performance of such plants. Of particular importance is that the proposed technology also results in a stream of pure carbon dioxide. This allows for the facile sequestration or other use of this greenhouse gas. These features will benefit the U.S. in allowing for the continued use of domestic fossil fuels in a more energy efficient and environmentally acceptable manner.

Schwartz, Michael

2001-11-06T23:59:59.000Z

371

FEMP/NTDP Technology Focus New Technology  

E-Print Network (OSTI)

FEMP/NTDP Technology Focus New Technology Demonstration Program Technology Focus FEMPFederal Energy Management Program Trends in Energy Management Technology: BCS Integration Technologies ­ Open Communications into a complete EMCIS. The first article [1] covered enabling technologies for emerging energy management systems

372

membrane-ge | netl.doe.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

High-Performance Thin Film Composite Hollow Fiber Membranes for Post-Combustion Carbon Dioxide Capture Project No.: DE-FE0007514 GE Global Research is developing high...

373

Triiodothyronine facilitates weaning from extracorporeal membrane...  

NLE Websites -- All DOE Office Websites (Extended Search)

substrate utilization. Abstract: Extracorporeal membrane oxygenation (ECMO) provides a bridge to recovery after myocardial injury in infants and children, yet morbidity and...

374

Tensile strain mapping in flat germanium membranes  

SciTech Connect

Scanning X-ray micro-diffraction has been used as a non-destructive probe of the local crystalline quality of a thin suspended germanium (Ge) membrane. A series of reciprocal space maps were obtained with ?4 ?m spatial resolution, from which detailed information on the strain distribution, thickness, and crystalline tilt of the membrane was obtained. We are able to detect a systematic strain variation across the membranes, but show that this is negligible in the context of using the membranes as platforms for further growth. In addition, we show evidence that the interface and surface quality is improved by suspending the Ge.

Rhead, S. D., E-mail: S.Rhead@warwick.ac.uk; Halpin, J. E.; Myronov, M.; Patchett, D. H.; Allred, P. S.; Wilson, N. R.; Leadley, D. R. [Department of Physics, University of Warwick, Coventry, CV4 7AL (United Kingdom); Shah, V. A. [Department of Physics, University of Warwick, Coventry, CV4 7AL (United Kingdom); Department of Engineering, University of Warwick, Coventry, CV4 7AL (United Kingdom); Kachkanov, V.; Dolbnya, I. P. [Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE (United Kingdom); Reparaz, J. S. [ICN2 - Institut Catala de Nanociencia i Nanotecnologia, Campus UAB, 08193 Bellaterra (Barcelona) (Spain); Sotomayor Torres, C. M. [ICN2 - Institut Catala de Nanociencia i Nanotecnologia, Campus UAB, 08193 Bellaterra (Barcelona) (Spain)

2014-04-28T23:59:59.000Z

375

Composite membranes and methods for making same  

DOE Patents (OSTI)

Composite membranes that are adapted for separation, purification, filtration, analysis, reaction and sensing. The composite membranes can include a porous support structure having elongate pore channels extending through the support structure. The composite membrane also includes an active layer comprising an active layer material, where the active layer material is completely disposed within the pore channels between the surfaces of the support structure. The active layer is intimately integrated within the support structure, thus enabling great robustness, reliability, resistance to mechanical stress and thermal cycling, and high selectivity. Methods for the fabrication of composite membranes are also provided.

Routkevitch, Dmitri; Polyakov, Oleg G

2012-07-03T23:59:59.000Z

376

Natural gas treatment process using PTMSP membrane  

DOE Patents (OSTI)

A process is described for separating C{sub 3}+ hydrocarbons, particularly propane and butane, from natural gas. The process uses a poly(trimethylsilylpropyne) membrane. 6 figs.

Toy, L.G.; Pinnau, I.

1996-03-26T23:59:59.000Z

377

Natural gas treatment process using PTMSP membrane  

DOE Patents (OSTI)

A process for separating C.sub.3 + hydrocarbons, particularly propane and butane, from natural gas. The process uses a poly(trimethylsilylpropyne) membrane.

Toy, Lora G. (San Francisco, CA); Pinnau, Ingo (Palo Alto, CA)

1996-01-01T23:59:59.000Z

378

Fluorous membrane-based separations and reactions.  

E-Print Network (OSTI)

??Porous alumina membranes were rendered compatible with fluorous liquids by surface modification with a carboxylic acid terminated perfluoropolyether (Krytox 157FSH). FTIR and contact angle measurements… (more)

Yang, Yanhong

2011-01-01T23:59:59.000Z

379

Cryogenic wavefront correction using membrane deformable mirrors  

Science Journals Connector (OSTI)

Micro-machined membrane deformable mirrors (MMDMs) are being evaluated for their suitability as wavefront correctors at cryogenic temperatures. Presented here are experimental...

Dyson, Harold; Sharples, Ray; Dipper, N; Vdovin, Gleb

2001-01-01T23:59:59.000Z

380

Durable, Low Cost, Improved Fuel Cell Membranes  

Energy.gov (U.S. Department of Energy (DOE))

This presentation, which focuses on fuel cell membranes, was given by Michel Foure of Arkema at a meeting on new fuel cell projects in February 2007.

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Self-Assembly of Layered Membranes  

NLE Websites -- All DOE Office Websites (Extended Search)

| 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Self-Assembly of Layered Membranes October 27, 2014 Bookmark and Share Fig. 1. Schematic...

382

Measuring Physical Properties of Polymer Electrolyte Membranes  

Energy.gov (U.S. Department of Energy (DOE))

Presented by Cortney Mittelsteadt of Giner Electrochemical Systems, LLC, at the DOE High Temperature Membrane Working Group held September 14, 2006.

383

Hollow-Fiber Reverse Osmosis Membranes  

Science Journals Connector (OSTI)

Hollow-fiber membranes for reverse osmosis desalination are typically of the dense wall ... compact modules and further improve the economics of reverse osmosis desalination.

Mark E. Cohen; Michael A. Grable; Billy M. Riggleman

1972-01-01T23:59:59.000Z

384

Hybrid Membrane System for Industrial Water Reuse  

Energy.gov (U.S. Department of Energy (DOE))

Demonstrate an advanced water treatment and reuse process in a single hybrid system that combines forward osmosis with membrane distillation to achieve greater efficiency and increased water reuse.

385

High Temperature Membrane Working Group Meeting Minutes  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

membranes. He discussed the motivation for the work; electrochemistry and mechanical loads co-exist but are usually modeled separately. Additionally, there is a concern...

386

Alternate Fuel Cell Membranes for Energy Independence  

SciTech Connect

The overall objective of this project was the development and evaluation of novel hydrocarbon fuel cell (FC) membranes that possess high temperature performance and long term chemical/mechanical durability in proton exchange membrane (PEM) fuel cells (FC). The major research theme was synthesis of aromatic hydrocarbon polymers of the poly(arylene ether sulfone) (PAES) type containing sulfonic acid groups tethered to the backbone via perfluorinated alkylene linkages and in some cases also directly attached to the phenylene groups along the backbone. Other research themes were the use of nitrogen-based heterocyclics instead of acid groups for proton conduction, which provides high temperature, low relative humidity membranes with high mechanical/thermal/chemical stability and pendant moieties that exhibit high proton conductivities in the absence of water, and synthesis of block copolymers consisting of a proton conducting block coupled to poly(perfluorinated propylene oxide) (PFPO) blocks. Accomplishments of the project were as follows: 1) establishment of a vertically integrated program of synthesis, characterization, and evaluation of FC membranes, 2) establishment of benchmark membrane performance data based on Nafion for comparison to experimental membrane performance, 3) development of a new perfluoroalkyl sulfonate monomer, N,N-diisopropylethylammonium 2,2-bis(p-hydroxyphenyl) pentafluoropropanesulfonate (HPPS), 4) synthesis of random and block copolymer membranes from HPPS, 5) synthesis of block copolymer membranes containing high-acid-concentration hydrophilic blocks consisting of HPPS and 3,3'-disulfonate-4,4'-dichlorodiphenylsulfone (sDCDPS), 6) development of synthetic routes to aromatic polymer backbones containing pendent 1H-1,2,3-triazole moieties, 7) development of coupling strategies to create phase-separated block copolymers between hydrophilic sulfonated prepolymers and commodity polymers such as PFPO, 8) establishment of basic performance properties of experimental membranes, 9) fabrication and FC performance testing of membrane electrode assemblies (MEA) from experimental membranes, and 10) measurement of ex situ and in situ membrane durability of experimental membranes. Although none of the experimental hydrocarbon membranes that issued from the project displayed proton conductivities that met DOE requirements, the project contributed to our basic understanding of membrane structure-property relationships in a number of key respects. An important finding of the benchmark studies is that physical degradation associated with humidity and temperature variations in the FC tend to open new fuel crossover pathways and act synergistically with chemical degradation to accelerate overall membrane degradation. Thus, for long term membrane survival and efficient fuel utilization, membranes must withstand internal stresses due to humidity and temperature changes. In this respect, rigid aromatic hydrocarbon fuel cell membranes, e.g. PAES, offer an advantage over un-modified Nafion membranes. The benchmark studies also showed that broadband dielectric spectroscopy is a potentially powerful tool in assessing shifts in the fundamental macromolecular dynamics caused by Nafion chemical degradation, and thus, this technique is of relevance in interrogating proton exchange membrane durability in fuel cells and macromolecular dynamics as coupled to proton migration, which is of fundamental relevance in proton exchange membranes in fuel cells. A key finding from the hydrocarbon membrane synthesis effort was that rigid aromatic polymers containing isolated ion exchange groups tethered tightly to the backbone (short tether), such as HPPS, provide excellent mechanical and durability properties but do not provide sufficient conductivity, in either random or block configuration, when used as the sole ion exchange monomer. However, we continue to hypothesize that longer tethers, and tethered groups spaced more closely within the hydrophilic chain elements of the polymer, will yield highly conductive materials with excellent mech

Storey, Robson, F.; Mauritz, Kenneth, A.; Patton, Derek, L.; Savin, Daniel, A.

2012-12-18T23:59:59.000Z

387

Integration of H2 Separation Membranes with CO2 Capture and Compression  

NLE Websites -- All DOE Office Websites (Extended Search)

Integration of H Integration of H 2 Separation Membranes with CO 2 Capture and Compression November 30, 2009 DOE/NETL- 401/113009 INTEGRATION OF H 2 SEPARATION MEMBRANES WITH CO 2 CAPTURE AND COMPRESSION DOE/NETL-401/113009 FINAL REPORT November 30, 2009 NETL Contact: Eric Grol Chemical Engineer Office of Systems, Analysis, and Planning National Energy Technology Laboratory www.netl.doe.gov ii ACKNOWLEDGEMENTS This report was prepared by JM Energy Consulting, Inc. for Technology & Management Services, Inc. (TMS), at the request of the U.S. DOE National Energy Technology Laboratory (NETL). This study was conducted over a forty-three month period beginning in April 2006. Project Managers Mr. Eric Grol (Dec. 2008 - Nov. 2009) Mr. Steven Ostheim

388

(Environmental technology)  

SciTech Connect

The traveler participated in a conference on environmental technology in Paris, sponsored by the US Embassy-Paris, US Environmental Protection Agency (EPA), the French Environmental Ministry, and others. The traveler sat on a panel for environmental aspects of energy technology and made a presentation on the potential contributions of Oak Ridge National Laboratory (ORNL) to a planned French-American Environmental Technologies Institute in Chattanooga, Tennessee, and Evry, France. This institute would provide opportunities for international cooperation on environmental issues and technology transfer related to environmental protection, monitoring, and restoration at US Department of Energy (DOE) facilities. The traveler also attended the Fourth International Conference on Environmental Contamination in Barcelona. Conference topics included environmental chemistry, land disposal of wastes, treatment of toxic wastes, micropollutants, trace organics, artificial radionuclides in the environment, and the use biomonitoring and biosystems for environmental assessment. The traveler presented a paper on The Fate of Radionuclides in Sewage Sludge Applied to Land.'' Those findings corresponded well with results from studies addressing the fate of fallout radionuclides from the Chernobyl nuclear accident. There was an exchange of new information on a number of topics of interest to DOE waste management and environmental restoration needs.

Boston, H.L.

1990-10-12T23:59:59.000Z

389

COMMERCIALIZING TECHNOLOGIES &  

E-Print Network (OSTI)

measurement." Dan Gillings President Applied Technology Associates NMSBA reduced my manufacturing costs by 20 a patent for a revolutionary new, even more shock absorbent mouthguard they will manufacture from material including a new additive. 2 Animated Talking Toys Heilbron Associates had acquired rights to a fiber optic

390

Membrane dish analysis: A summary of structural and optical analysis capabilities  

SciTech Connect

Research at SERI within the Department of Energy's Solar Thermal Technology Program has focused on the development of membrane dish concentrators for space and terrestrial power applications. As potentially lightweight, inexpensive, high-performance structures, they are excellent candidates for space-deployable energy sources as well as cost-effective terrestrial energy concepts. A thorough engineering research treatment of these types of structures consists primarily of two parts: (1) structural mechanics of the membrane and ring support and (2) analysis and characterization of the concentrator optical performance. It is important to understand the effects of the membrane's structure and support system on the optical performance of the concentrator. This requires an interface between appropriate structural and optical models. Until recently, such models and the required interface have not existed. This report documents research that has been conducted at SERI in this area. It is a compilation of several papers describing structural models of membrane dish structures and optical models used to predict dish concentrator optical and thermal performance. The structural models were developed under SERI subcontract by Dr. Steele and Dr. Balch of Stanford University. The optical model was developed in-house by SERI staff. In addition, the interface between the models is described. It allows easy and thorough characterization of membrane dish systems from the mechanics to the resulting optical performance. The models described herein have been and continue to be extremely useful to SERI, industry, and universities involved with the modeling and analysis of lightweight membrane concentrators for solar thermal applications.

Steele, C.R.; Balch, C.D.; Jorgensen, G.J.; Wendelin, T.; Lewandowski, A.

1991-11-01T23:59:59.000Z

391

Metallic Membrane Materials Development for Hydrogen Production from Coal Derived Syngas  

SciTech Connect

The goals of Office of Clean Coal are: (1) Improved energy security; (2) Reduced green house gas emissions; (3) High tech job creation; and (4) Reduced energy costs. The goals of the Hydrogen from Coal Program are: (1) Prove the feasibility of a 40% efficient, near zero emissions IGCC plant that uses membrane separation technology and other advanced technologies to reduce the cost of electricity by at least 35%; and (2) Develop H{sub 2} production and processing technologies that will contribute {approx}3% in improved efficiency and 12% reduction in cost of electricity.

O.N. Dogan; B.H. Howard; D.E. Alman

2012-02-26T23:59:59.000Z

392

Vacuum Technology  

SciTech Connect

The environmental condition called vacuum is created any time the pressure of a gas is reduced compared to atmospheric pressure. On earth we typically create a vacuum by connecting a pump capable of moving gas to a relatively leak free vessel. Through operation of the gas pump the number of gas molecules per unit volume is decreased within the vessel. As soon as one creates a vacuum natural forces (in this case entropy) work to restore equilibrium pressure; the practical effect of this is that gas molecules attempt to enter the evacuated space by any means possible. It is useful to think of vacuum in terms of a gas at a pressure below atmospheric pressure. In even the best vacuum vessels ever created there are approximately 3,500,000 molecules of gas per cubic meter of volume remaining inside the vessel. The lowest pressure environment known is in interstellar space where there are approximately four molecules of gas per cubic meter. Researchers are currently developing vacuum technology components (pumps, gauges, valves, etc.) using micro electro mechanical systems (MEMS) technology. Miniature vacuum components and systems will open the possibility for significant savings in energy cost and will open the doors to advances in electronics, manufacturing and semiconductor fabrication. In conclusion, an understanding of the basic principles of vacuum technology as presented in this summary is essential for the successful execution of all projects that involve vacuum technology. Using the principles described above, a practitioner of vacuum technology can design a vacuum system that will achieve the project requirements.

Biltoft, P J

2004-10-15T23:59:59.000Z

393

Transport Membrane Condenser for Water and Energy Recovery from Power Plant Flue Gas  

SciTech Connect

The new waste heat and water recovery technology based on a nanoporous ceramic membrane vapor separation mechanism has been developed for power plant flue gas application. The recovered water vapor and its latent heat from the flue gas can increase the power plant boiler efficiency and reduce water consumption. This report describes the development of the Transport Membrane Condenser (TMC) technology in details for power plant flue gas application. The two-stage TMC design can achieve maximum heat and water recovery based on practical power plant flue gas and cooling water stream conditions. And the report includes: Two-stage TMC water and heat recovery system design based on potential host power plant coal fired flue gas conditions; Membrane performance optimization process based on the flue gas conditions, heat sink conditions, and water and heat transport rate requirement; Pilot-Scale Unit design, fabrication and performance validation test results. Laboratory test results showed the TMC system can exact significant amount of vapor and heat from the flue gases. The recovered water has been tested and proved of good quality, and the impact of SO{sub 2} in the flue gas on the membrane has been evaluated. The TMC pilot-scale system has been field tested with a slip stream of flue gas in a power plant to prove its long term real world operation performance. A TMC scale-up design approach has been investigated and an economic analysis of applying the technology has been performed.

Dexin Wang

2012-03-31T23:59:59.000Z

394

160 C PROTON EXCHANGE MEMBRANE (PEM) FUEL CELL SYSTEM DEVELOPMENT  

SciTech Connect

The objectives of this program were: (a) to develop and demonstrate a new polymer electrolyte membrane fuel cell (PEMFC) system that operates up to 160 C temperatures and at ambient pressures for stationary power applications, and (b) to determine if the GTI-molded composite graphite bipolar separator plate could provide long term operational stability at 160 C or higher. There are many reasons that fuel cell research has been receiving much attention. Fuel cells represent environmentally friendly and efficient sources of electrical power generation that could use a variety of fuel sources. The Gas Technology Institute (GTI), formerly Institute of Gas Technology (IGT), is focused on distributed energy stationary power generation systems. Currently the preferred method for hydrogen production for stationary power systems is conversion of natural gas, which has a vast distribution system in place. However, in the conversion of natural gas into a hydrogen-rich fuel, traces of carbon monoxide are produced. Carbon monoxide present in the fuel gas will in time cumulatively poison, or passivate the active platinum catalysts used in the anodes of PEMFC's operating at temperatures of 60 to 80 C. Various fuel processors have incorporated systems to reduce the carbon monoxide to levels below 10 ppm, but these require additional catalytic section(s) with sensors and controls for effective carbon monoxide control. These CO cleanup systems must also function especially well during transient load operation where CO can spike 300% or more. One way to circumvent the carbon monoxide problem is to operate the fuel cell at a higher temperature where carbon monoxide cannot easily adsorb onto the catalyst and poison it. Commercially available polymer membranes such as Nafion{trademark} are not capable of operation at temperatures sufficiently high to prevent this. Hence this project investigated a new polymer membrane alternative to Nafion{trademark} that is capable of operation at temperatures up to 160 C.

L.G. Marianowski

2001-12-21T23:59:59.000Z

395

New Oxygen-Production Technology Proving Successful | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Oxygen-Production Technology Proving Successful Oxygen-Production Technology Proving Successful New Oxygen-Production Technology Proving Successful April 22, 2009 - 1:00pm Addthis Washington, DC -- The Office of Fossil Energy's National Energy Technology Laboratory (NETL) has partnered with Air Products and Chemicals Inc. of Allentown, Penn. to develop the Ion Transport Membrane (ITM) Oxygen, a revolutionary new oxygen-production technology that requires less energy and offers lower capital costs than conventional technologies. ITM Oxygen will enhance the performance of integrated gasification combined cycle (IGCC) power plants, as well as other gasification-based processes. The technology will also enhance the economics of oxy-fired combustion technologies, making it an attractive option for the capture of carbon

396

Journal of Membrane Science 257 (2005) 8598 Membrane contactor processes for wastewater reclamation in space  

E-Print Network (OSTI)

Journal of Membrane Science 257 (2005) 85­98 Membrane contactor processes for wastewater membrane processes for reclamation and reuse of wastewater in future space missions was evaluated and used in estimating the specific energy cost of treating the wastewater generated in space. The weight

397

Journal of Membrane Science 257 (2005) 111119 Membrane contactor processes for wastewater reclamation in space  

E-Print Network (OSTI)

Journal of Membrane Science 257 (2005) 111­119 Membrane contactor processes for wastewater for treatment of metabolic wastewater Tzahi Y. Cath, Dean Adams, Amy E. Childress University of Nevada of an innovative dual membrane contactor process for treatment of combined hygiene and metabolic wastewater

398

NETL: Robust and Energy Efficient Dual-Stage Membrane-Based Process for  

NLE Websites -- All DOE Office Websites (Extended Search)

Robust and Energy Efficient Dual-Stage Membrane-Based Process for Enhanced CO2 Capture Robust and Energy Efficient Dual-Stage Membrane-Based Process for Enhanced CO2 Capture Project No.: DE-FE0013064 Media and Process Technology, Inc is developing a "one-box process" that integrates the water-gas-shift (WGS) reaction in a membrane reactor (MR) with hydrogen recovery for CO2 capture in integrated gasification combined cycle (IGCC) power systems. The process utilizes previously developed hydrogen (H2)-selective carbon molecular sieve membranes (CMS) and novel palladium (Pd) and Pd-alloy membranes for efficient residual H2 recovery. The bench-scale system will operate with simulated syngas mixtures first, and then be evaluated with real syngas at the National Carbon Capture Center for performance and long-term operation stability. Coal-derived syngas, after quenching and particulate removal, will undergo tar and contaminant removal, carbon monoxide conversion via WGS with a sour shift catalyst, and H2 separation in a single step. The bulk of the H2 produced (with purity adequate for downstream power generation) will be recovered in the permeate stream of this novel WGS/MR. The retentate stream (containing the residual H2 and the bulk of CO2 produced), after undergoing a conventional cold gas clean up for the removal of tar and contaminants, will be sent for CO2 compression for storage or use. Through the CO2 compression train, the residual H2 will be further recovered with a highly selective-Pd alloy membrane. A high degree of H2 (and consequently CO2) recovery can be achieved with the two-step membrane process. The strengths of CMS and Pd membranes are fully utilized while their weaknesses are compensated-for by the synergy that is being created by this novel two-stage process.

399

TECHNOLOGY TRANSFER  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

404-NOV. 1, 2000 404-NOV. 1, 2000 TECHNOLOGY TRANSFER COMMERCIALIZATION ACT OF 2000 VerDate 11-MAY-2000 04:52 Nov 16, 2000 Jkt 089139 PO 00000 Frm 00001 Fmt 6579 Sfmt 6579 E:\PUBLAW\PUBL404.106 APPS27 PsN: PUBL404 114 STAT. 1742 PUBLIC LAW 106-404-NOV. 1, 2000 Public Law 106-404 106th Congress An Act To improve the ability of Federal agencies to license federally owned inventions. Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, SECTION 1. SHORT TITLE. This Act may be cited as the ''Technology Transfer Commer- cialization Act of 2000''. SEC. 2. FINDINGS. The Congress finds that- (1) the importance of linking our unparalleled network of over 700 Federal laboratories and our Nation's universities with United States industry continues to hold great promise

400

Emerging technologies  

SciTech Connect

The mission of the Emerging Technologies thrust area at Lawrence Livermore National Laboratory is to help individuals establish technology areas that have national and commercial impact, and are outside the scope of the existing thrust areas. We continue to encourage innovative ideas that bring quality results to existing programs. We also take as our mission the encouragement of investment in new technology areas that are important to the economic competitiveness of this nation. In fiscal year 1992, we have focused on nine projects, summarized in this report: (1) Tire, Accident, Handling, and Roadway Safety; (2) EXTRANSYT: An Expert System for Advanced Traffic Management; (3) Odin: A High-Power, Underwater, Acoustic Transmitter for Surveillance Applications; (4) Passive Seismic Reservoir Monitoring: Signal Processing Innovations; (5) Paste Extrudable Explosive Aft Charge for Multi-Stage Munitions; (6) A Continuum Model for Reinforced Concrete at High Pressures and Strain Rates: Interim Report; (7) Benchmarking of the Criticality Evaluation Code COG; (8) Fast Algorithm for Large-Scale Consensus DNA Sequence Assembly; and (9) Using Electrical Heating to Enhance the Extraction of Volatile Organic Compounds from Soil.

Lu, Shin-yee

1993-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

IONICALLY CONDUCTING MEMBRANES FOR HYDROGEN PRODUCTION AND  

E-Print Network (OSTI)

operating experience. #12;ELTRON RESEARCH INC. Syngas Production Rate ­ 60 mL/min cm2 @ 900°C Equivalent O2IONICALLY CONDUCTING MEMBRANES FOR HYDROGEN PRODUCTION AND SEPARATION Presented by Tony Sammells for Hydrogen Production ­ Compositions ­ Feedstocks ­ Performance ­ Key Technical Hurdles · Membranes

402

The Low Polarity of Many Membrane Proteins  

Science Journals Connector (OSTI)

...buried in the hydrophobic interior of the membrane. from their Thus, the polarity index appears to be a useful parameter for edia. the characterization of membrane proteins. 45.6 46.1 48.1 48.3 50.0 52.0 37 38 12 39 27 27 This work was supported...

Roderick A. Capaldi; Garret Vanderkooi

1972-01-01T23:59:59.000Z

403

Catalyst containing oxygen transport membrane  

SciTech Connect

A composite oxygen transport membrane having a dense layer, a porous support layer and an intermediate porous layer located between the dense layer and the porous support layer. Both the dense layer and the intermediate porous layer are formed from an ionic conductive material to conduct oxygen ions and an electrically conductive material to conduct electrons. The porous support layer has a high permeability, high porosity, and a high average pore diameter and the intermediate porous layer has a lower permeability and lower pore diameter than the porous support layer. Catalyst particles selected to promote oxidation of a combustible substance are located in the intermediate porous layer and in the porous support adjacent to the intermediate porous layer. The catalyst particles can be formed by wicking a solution of catalyst precursors through the porous support toward the intermediate porous layer.

Christie, Gervase Maxwell; Wilson, Jamie Robyn; van Hassel, Bart Antonie

2012-12-04T23:59:59.000Z

404

NETL: Novel Inorganic/Polymer Composite Membranes  

NLE Websites -- All DOE Office Websites (Extended Search)

Novel Inorganic/Polymer Composite Membranes Novel Inorganic/Polymer Composite Membranes Project No.: DE-FE0007632 Ohio State University is developing a cost-effective design and manufacturing process for new membrane modules that capture carbon dioxide (CO2) from flue gas. The membranes consist of a thin, selective inorganic layer, embedded in a polymer structure so that it can be made in a continuous manufacturing process. They will be incorporated in spiral-wound modules for bench-scale tests using coal-fired flue gas. Preliminary cost calculations show that a single-stage membrane process is economically unfavorable, primarily because of the low concentration of CO2 (~14 percent) in the flue gas stream. A two-stage process is more economical, but requires plant operation with a CO2-enriched recycle stream.

405

Proton conducting ceramic membranes for hydrogen separation  

DOE Patents (OSTI)

A multi-phase proton conducting material comprising a proton-conducting ceramic phase and a stabilizing ceramic phase. Under the presence of a partial pressure gradient of hydrogen across the membrane or under the influence of an electrical potential, a membrane fabricated with this material selectively transports hydrogen ions through the proton conducting phase, which results in ultrahigh purity hydrogen permeation through the membrane. The stabilizing ceramic phase may be substantially structurally and chemically identical to at least one product of a reaction between the proton conducting phase and at least one expected gas under operating conditions of a membrane fabricated using the material. In a barium cerate-based proton conducting membrane, one stabilizing phase is ceria.

Elangovan, S. (South Jordan, UT); Nair, Balakrishnan G. (Sandy, UT); Small, Troy (Midvale, UT); Heck, Brian (Salt Lake City, UT)

2011-09-06T23:59:59.000Z

406

Fuel cell subassemblies incorporating subgasketed thrifted membranes  

DOE Patents (OSTI)

A fuel cell roll good subassembly is described that includes a plurality of individual electrolyte membranes. One or more first subgaskets are attached to the individual electrolyte membranes. Each of the first subgaskets has at least one aperture and the first subgaskets are arranged so the center regions of the individual electrolyte membranes are exposed through the apertures of the first subgaskets. A second subgasket comprises a web having a plurality of apertures. The second subgasket web is attached to the one or more first subgaskets so the center regions of the individual electrolyte membranes are exposed through the apertures of the second subgasket web. The second subgasket web may have little or no adhesive on the subgasket surface facing the electrolyte membrane.

Iverson, Eric J; Pierpont, Daniel M; Yandrasits, Michael A; Hamrock, Steven J; Obradovich, Stephan J; Peterson, Donald G

2014-01-28T23:59:59.000Z

407

Liners for ion transport membrane systems  

SciTech Connect

Ion transport membrane system comprising (a) a pressure vessel comprising an interior, an exterior, an inlet, an inlet conduit, an outlet, and an outlet conduit; (b) a plurality of planar ion transport membrane modules disposed in the interior of the pressure vessel and arranged in series, each membrane module comprising mixed metal oxide ceramic material and having an interior region and an exterior region, wherein the inlet and the outlet of the pressure vessel are in flow communication with exterior regions of the membrane modules; (c) a gas manifold having an interior surface wherein the gas manifold is in flow communication with the interior region of each of the planar ion transport membrane modules and with the exterior of the pressure vessel; and (d) a liner disposed within any of the inlet conduit, the outlet conduit, and the interior surface of the gas manifold.

Carolan, Michael Francis (Allentown, PA); Miller, Christopher Francis (Macungie, PA)

2010-08-10T23:59:59.000Z

408

Reactor process using metal oxide ceramic membranes  

DOE Patents (OSTI)

A reaction vessel for use in photoelectrochemical reactions includes as its reactive surface a metal oxide porous ceramic membrane of a catalytic metal such as titanium. The reaction vessel includes a light source and a counter electrode. A provision for applying an electrical bias between the membrane and the counter electrode permits the Fermi levels of potential reaction to be favored so that certain reactions may be favored in the vessel. The electrical biasing is also useful for the cleaning of the catalytic membrane. Also disclosed is a method regenerating a porous metal oxide ceramic membrane used in a photoelectrochemical catalytic process by periodically removing the reactants and regenerating the membrane using a variety of chemical, thermal, and electrical techniques. 2 figures.

Anderson, M.A.

1994-05-03T23:59:59.000Z

409

Immobilized fluid membranes for gas separation  

DOE Patents (OSTI)

Provided herein are immobilized liquid membranes for gas separation, methods of preparing such membranes and uses thereof. In one example, the immobilized membrane includes a porous metallic host matrix and an immobilized liquid fluid (such as a silicone oil) that is immobilized within one or more pores included within the porous metallic host matrix. The immobilized liquid membrane is capable of selective permeation of one type of molecule (such as oxygen) over another type of molecule (such as water). In some examples, the selective membrane is incorporated into a device to supply oxygen from ambient air to the device for electrochemical reactions, and at the same time, to block water penetration and electrolyte loss from the device.

Liu, Wei; Canfield, Nathan L; Zhang, Jian; Li, Xiaohong Shari; Zhang, Jiguang

2014-03-18T23:59:59.000Z

410

Building Technologies Office: About Emerging Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Emerging Technologies Emerging Technologies The Emerging Technologies team funds the research and development of cost-effective, energy-efficient building technologies within five years of commercialization. Learn more about the: Key Technologies Benefits Results Key Technologies Specific technologies pursued within the Emerging Technologies team include: Lighting: advanced solid-state lighting systems, including core technology research and development, manufacturing R&D, and market development Heating, ventilation, and air conditioning (HVAC): heat pumps, heat exchangers, and working fluids Building Envelope: highly insulating and dynamic windows, cool roofs, building thermal insulation, façades, daylighting, and fenestration Water Heating: heat pump water heaters and solar water heaters

411

CF4 plasma surface modification of asymmetric hydrophilic polyethersulfone membranes for direct contact membrane distillation  

Science Journals Connector (OSTI)

This paper describes the use of CF4 plasma modification of a hydrophilic membrane into a hydrophobic one for membrane distillation. Plasma surface modification conditions were optimized with respect to plasma glow discharge power and treatment duration using a flat sheet PES membrane. The modified membranes were characterized by X-ray photoelectron spectroscopy (XPS), SEM, contact angle measurements, pore size distribution, liquid entry pressure and atomic force microscopy. Results revealed that the plasma modification converted hydrophilic membranes of a contact angle 0° into hydrophobic ones with water contact angle above 120°. Fluorination was ascribed to the wettability change of the membrane from hydrophilic to hydrophobic via insertion and possibly deposition. Direct contact membrane distillation of the hollow fibers using 4% NaCl solution yielded a water flux of 45.4 kg/m2 h at a feed temperature of 63.3 °C. A rather high evaporation efficiency of the membrane distillation process was estimated in comparison with literature results. Direct contact membrane distillation (DCMD) stability test showed a water flux of 42.1 kg/m2 h using 4 wt% NaCl as feed (at the temperature of 60.5 ± 0.2 °C). No leakage was observed for 54 h indicating a stable membrane performance. The high evaporation efficiency and water flux were ascribed most probably to the high porosity of the base membrane.

Xing Wei; Baolong Zhao; Xue-Mei Li; Zhouwei Wang; Ben-Qiao He; Tao He; Biao Jiang

2012-01-01T23:59:59.000Z

412

The role of transmembrane domains in membrane fusion  

Science Journals Connector (OSTI)

Biological membrane fusion is driven by different types of molecular fusion machines. Most of these proteins are membrane ... . SNARE proteins are essential for intracellular membrane fusion along the secretory a...

D. Langosch; M. Hofmann; C. Ungermann

2007-04-01T23:59:59.000Z

413

Improved filtration membranes through self-organizing amphiphilic comb copolymers  

E-Print Network (OSTI)

The operating cost of a membrane filtration system is generally determined by two major factors: the permeability of the membrane to water, and the lifetime of the membrane. Both of these are strongly affected by the ...

Asatekin Alexiou, Ayse

2009-01-01T23:59:59.000Z

414

Manufacturing Science and Technology: Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Meso-Machining Meso-Machining PDF format (182 kb) Sandia's Micro-Electro Discharge Machine (Micro-EDM) (above). On the upper right inset is the Micro-EDM electode in copper that was made with the LIGA (electroforming) process. On the lower right inset is a screen fabricated into .006 inch kovar sheet using the Micro-EDM electrode. The walls of the screen are .002 inch wide by .006 inch deep. Meso-machining technologies being developed at Sandia National Laboratories will help manufacturers improve a variety of production processes, tools, and components. Meso-machining will benefit the aerospace, automotive, biomedical, and defense industries by creating feature sizes from the 1 to 50 micron range. Sandia's Manufacturing Science and Technology Center is developing the

415

Manufacturing Science and Technology: Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

LTCC multi-chip module LTCC multi-chip module A high density LTCC multi-chip module Electronic Packaging PDF format (150 kb) The Electronic Packaging technologies in the Thin Film, Vacuum, & Packaging Department are a resource for all aspects of microelectronic packaging. From design and layout to fabrication of prototype samples, the staff offers partners the opportunity for concurrent engineering and development of a variety of electronic packaging concepts. This includes assistance in selecting the most appropriate technology for manufacturing, analysis of performance characteristics and development of new and unique processes. Capabilities: Network Fabrication Low Temperature Co-Fired Ceramic (LTCC) Thick Film Thin Film Packaging and Assembly Chip Level Packaging MEMs Packaging

416

High Permeability Ternary Palladium Alloy Membranes with Improved Sulfur and Halide Tolerance  

NLE Websites -- All DOE Office Websites (Extended Search)

9 9 HigH Permeability ternary Palladium alloy membranes witH imProved sulfur and Halide tolerance Description A critical step in the transition to the hydrogen economy is the separation of hydrogen from coal gasification gases (syngas) or methane. This is typically accomplished through membrane separation. Past research has shown that palladium (Pd) alloys possess great potential as robust and economical membranes. However, the search for the optimal binary or ternary alloys is an involved and costly process due to the immense number of alloy variations that could be prepared and tested. Recent modeling work at Georgia Institute of Technology using density functional theory (DFT) identified several promising ternary alloy compositions with improved

417

TECHNOLOGY LICENSE APPLICATION Office of Technology Transfer  

E-Print Network (OSTI)

Page 1 TECHNOLOGY LICENSE APPLICATION Office of Technology Transfer UT-Battelle, LLC (UT. One of the functions of UT-BATTELLE's Office of Technology Transfer is to negotiate license agreements

Pennycook, Steve

418

Advanced, Energy-Efficient Hybrid Membrane System for Industrial...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Advanced, Energy-Efficient Hybrid Membrane System for Industrial Water Reuse Advanced, Energy-Efficient Hybrid Membrane System for Industrial Water Reuse hybridmembranesystemsfa...

419

High Temperature Polymer Membrane Development at Argonne National...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Polymer Membrane Development at Argonne National Laboratory High Temperature Polymer Membrane Development at Argonne National Laboratory Summary of ANL's high temperature polymer...

420

Membranes and MEAs for Dry Hot Operating Conditions  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

of this collaborative effort are to develop new proton exchange membranes (PEM's) for fuel cells, integrate them into membrane electrode assemblies (MEA's), and demonstrate in...

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Folding amphipathic helices into membranes: Amphiphilicity trumps hydrophobicity  

E-Print Network (OSTI)

C. (1999). Membrane protein folding and stability: PhysicalA. S. & Hristova, K. (1998). Protein folding in membranes:Mutational analysis of protein folding and stability. In

Fernández-Vidal, Mónica; Jayasinghe, Sajith; Ladokhin, Alexey S; White, Stephen H

2007-01-01T23:59:59.000Z

422

Advanced, Energy-Efficient Hybrid Membrane System for Industrial...  

Energy Savers (EERE)

MANUFACTURING OFFICE Advanced, Energy- Efficient Hybrid Membrane System for Industrial Water Reuse New Hybrid Membrane System Utilizes Industrial Waste Heat to Power Water...

423

Graphene as the Ultimate Membrane for Gas Separation Project...  

NLE Websites -- All DOE Office Websites (Extended Search)

Graphene as the Ultimate Membrane for Gas Separation Graphene as the Ultimate Membrane for Gas Separation GraphenePore.jpg Key Challenges: Investigate the permeability and...

424

Polyvinylidene Fluoride-Based Membranes for Direct Methanol Fuel...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Polyvinylidene Fluoride-Based Membranes for Direct Methanol Fuel Cell Applications Polyvinylidene Fluoride-Based Membranes for Direct Methanol Fuel Cell Applications Presentation...

425

High temperature membranes for DMFC (and PEFC) applications  

Energy.gov (U.S. Department of Energy (DOE))

Presentation on High temperature membranes for DMFCs (and PEFCs) to the High Temperature Membrane Working Group, May 25, 2004 in Philadelphia, PA.

426

Model Compound Studies of Fuel Cell Membrane Degradation  

Energy.gov (U.S. Department of Energy (DOE))

Presentation on Model Compound Studies of Fuel Cell Membrane Degradation to the High Temperature Membrane Working Group Meeting held in Arlington, Virginia, May 26,2005.

427

membrane-fuelcell-energy | netl.doe.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

a novel system concept for the separation of carbon dioxide (CO2) from greenhouse gas (GHG) emission sources using an electrochemical membrane. The proposed membrane has its...

428

Development of Advanced High Temperature Fuel Cell Membranes  

Energy.gov (U.S. Department of Energy (DOE))

Presentation on Development of Advanced High Temperature Fuel Cell Membranes to the High Temperature Membrane Working Group Meeting held in Arlington, Virginia, May 26,2005.

429

A Discussion of Conductivity Testing in High Temperature Membranes...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

A Discussion of Conductivity Testing in High Temperature Membranes (lessons learned in assessing transport) A Discussion of Conductivity Testing in High Temperature Membranes...

430

Solid Oxide Membrane (SOM) Electrolysis of Magnesium: Scale-Up...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Solid Oxide Membrane (SOM) Electrolysis of Magnesium: Scale-Up Research and Engineering for Light-Weight Vehicles Solid Oxide Membrane (SOM) Electrolysis of Magnesium: Scale-Up...

431

High Temperature Polymer Membrane Development at Argonne National Laboratory  

Energy.gov (U.S. Department of Energy (DOE))

Summary of ANL’s high temperature polymer membrane work presented to the High Temperature Membrane Working Group Meeting, Orlando FL, October 17, 2003

432

Advanced Water Removal via Membrane Solvent Extraction | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Water Removal via Membrane Solvent Extraction Advanced Water Removal via Membrane Solvent Extraction advwaterremovalmse.pdf More Documents & Publications Advance Patent Waiver...

433

Alternate Fuel Cell Membranes at the University of Southern Mississipp...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Alternate Fuel Cell Membranes at the University of Southern Mississippi Alternate Fuel Cell Membranes at the University of Southern Mississippi April 16, 2013 - 12:00am Addthis...

434

NETL: 2013 Conference Proceedings - 2013 NETL CO2 Capture Technology  

NLE Websites -- All DOE Office Websites (Extended Search)

2013 NETL CO2 Capture Technology Meeting 2013 NETL CO2 Capture Technology Meeting July 8-11, 2013 Previous Proceedings 2012: NETL CO2 Capture Technology Meeting 2011: NETL CO2 Capture Technology Meeting 2010: NETL CO2 Capture Technology Meeting 2009: Annual NETL CO2 Capture Technology for Existing Plants R&D Meeting Proceedings of the 2013 NETL CO2 Capture Technology Meeting Table of Contents Presentations Monday, July 8 Opening/Overview Post-Combustion Sorbent-Based Capture Tuesday, July 9 Post-Combustion Solvent-Based Capture CO2 Compression Wednesday, July 10 Post-Combustion Membrane-Based Capture Pre-Combustion Capture Projects Thursday, July 11 ARPA-E Capture Projects System Studies and Modeling Oxy-Combustion and Chemical Looping Posters PRESENTATIONS Monday, July 8, 2013 Opening/Overview Introduction [PDF-MB]

435

Hydrogen Technologies Group  

SciTech Connect

The Hydrogen Technologies Group at the National Renewable Energy Laboratory advances the Hydrogen Technologies and Systems Center's mission by researching a variety of hydrogen technologies.

Not Available

2008-03-01T23:59:59.000Z

436

Information Technology and Libraries  

E-Print Network (OSTI)

Sue Chesley Perry 196 INFORMATION TECHNOLOGY AND LIBRARIES |LITA - Library & Information Technology Association). ”Two of the 190 INFORMATION TECHNOLOGY AND LIBRARIES |

Hubble, Ann; Murphy, Deborah A.; Perry, Susan Chesley

2011-01-01T23:59:59.000Z

437

Technology Transfer: Success Stories: Licensed Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Licensed Technologies Licensed Technologies Here are some of our licensees and the technologies they are commercializing; see our Start-Up Company page for more of our technology licenses. Company (Licensee) Technology Life Technologies Corp. Cell lines for breast cancer research Bristol Myers Squibb; Novartis; Plexxikon Inc.; Wyeth Research; GlaxoSmithKline; Johnson & Johnson; Boehringer Ingelheim Pharmaceuticals, Inc.; Genzyme Software for automated macromolecular crystallography Shell International Exploration and Production; ConnocoPhillips Company; StatOil ASA; Schlumburger Technology Corportation; BHP Billiton Ltd.; Chevron Energy Technology Company; EniTecnologie S.p.A. Geo-Hydrophysical modeling software Microsoft Home Energy Saver software distribution Kalinex Colorimetric bioassay

438

Vehicle Technologies Office: 2008 Advanced Vehicle Technology...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

8 Advanced Vehicle Technology Analysis and Evaluation Activities and Heavy Vehicle Systems Optimization Program Annual Progress Report Vehicle Technologies Office: 2008 Advanced...

439

Vehicle Technologies Office: 2009 Advanced Vehicle Technology...  

Office of Environmental Management (EM)

Vehicle Technologies Office: 2009 Advanced Vehicle Technology Analysis and Evaluation Activities and Heavy Vehicle Systems Optimization Program Annual Progress Report Vehicle...

440

Manufacturing Science and Technology: Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Thin Films Thin Films PDF format (189 kb) Multi Layer Thin Films Multi Layer Thin Films Planetary Sputtering SystemsPlanetary Sputtering Systems Planetary Sputtering Systems The Thin Film laboratory within Manufacturing Science & Technology provides a variety of vapor deposition processes and facilities for cooperative research and development. Available capabilities include electron beam evaporation, sputter deposition, reactive deposition processes, atomic layer deposition (ALD) and specialized techniques such as focused ion beam induced chemical vapor deposition. Equipment can be reconfigured for prototyping or it can be dedicated to long-term research, development and manufacturing. Most sputter and evaporative deposition systems are capable of depositing multiple materials.

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Manufacturing Science and Technology: Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Molding, Thermoforming & Compounding Molding, Thermoforming & Compounding PDF format (89 kb) The Manufacturing Science & Technology Center helps customers choose the best materials and techniques for their product by providing a variety of conformal coatings, thermoforming, and compounding materials using established or custom designed processes. The department provides consulting services for injection molding and rubber compounding projects. Capabilities: Thermoforming: Processing thermoplastics such as polycarbonate, polymethyl methacrylate, polypropylene polystyrene, and ABS; producing holding trays, protective caps, and custom covers Injection Molding Consultation: Designing your part to be injection molded, helping you choose the best material for your application, and supporting your interface with injection molding companies

442

Anisotropic membranes for gas separation  

DOE Patents (OSTI)

A gas separation membrane has a dense separating layer about 10,000 Angstroms or less thick and a porous support layer 10 to 400 microns thick that is an integral unit with gradually and continuously decreasing pore size from the base of the support layer to the surface of the thin separating layer and is made from a casting solution comprising ethyl cellulose and ethyl cellulose-based blends, typically greater than 47.5 ethoxyl content ethyl cellulose blended with compatible second polymers, such as nitrocellulose. The polymer content of the casting solution is from about 10% to about 35% by weight of the total solution with up to about 50% of this polymer weight a compatible second polymer to the ethyl cellulose in a volatile solvent such as isopropanol, methylacetate, methanol, ethanol, and acetone. Typical nonsolvents for the casting solutions include water and formamide. The casting solution is cast in air from about zero to 10 seconds to allow the volatile solvent to evaporate and then quenched in a coagulation bath, typically water, at a temperature of 7--25 C and then air dried at ambient temperature, typically 10--30 C. 2 figs.

Gollan, A.Z.

1987-07-21T23:59:59.000Z

443

Anisotropic membranes for gas separation  

DOE Patents (OSTI)

A gas separation membrane has a dense separating layer about 10,000 Angstroms or less thick and a porous support layer 10 to 400 microns thick that is an integral unit with gradually and continuously decreasing pore size from the base of the support layer to the surface of the thin separating layer and is made from a casting solution comprising ethyl cellulose and ethyl cellulose-based blends, typically greater than 47.5 ethoxyl content ethyl cellulose blended with compatible second polymers, such as nitrocellulose. The polymer content of the casting solution is from about 10% to about 35% by weight of the total solution with up to about 50% of this polymer weight a compatible second polymer to the ethyl cellulose in a volatile solvent such as isopropanol, methylacetate, methanol, ethanol, and acetone. Typical nonsolvents for the casting solutions include water and formamide. The casting solution is cast in air from about zero to 10 seconds to allow the volatile solvent to evaporate and then quenched in a coagulation bath, typically water, at a temperature of 7.degree.-25.degree. C. and then air dried at ambient temperature, typically 10.degree.-30.degree. C.

Gollan, Arye Z. (Newton, MA)

1987-01-01T23:59:59.000Z

444

Vacancy profile in reverse osmosis membranes studied by positron annihilation lifetime measurements and molecular dynamics simulations  

Science Journals Connector (OSTI)

The positron annihilation technique using a slow positron beam can be used for the study of the vacancy profiles in typical reverse osmosis (RO) membranes. In this study, the vacancy profile in the polyamide membrane that exhibits a high permselectivity between ions and water was studied using the positron annihilation technique and molecular dynamics simulations. Ortho-positronium (o-Ps) lifetimes in the surface region of the membranes were evaluated by using a slow positron beam. The diffusion behavior of Na+ and water in the polyamides was simulated by molecular dynamics (MD) methods using the TSUBAME2 supercomputer at the Tokyo Institute of Technology and discussed with the vacancy profile probed by the o-Ps. The results suggested that the large hydration size of Na+ compared to the vacancy size in the polyamides contributes to the increased diffusivity selectivity of water/Na+ that is related to the NaCl desalination performance of the membrane. Both the hydration size of the ions and the vacancy size appeared to be significant parameters to discuss the diffusivity selectivity of water/ions in typical polyamide membranes.

A Shimazu; H Goto; T Shintani; M Hirose; R Suzuki; Y Kobayashi

2013-01-01T23:59:59.000Z

445

Integration of reverse osmosis and membrane crystallization for sodium sulphate recovery  

Science Journals Connector (OSTI)

Abstract Reverse osmosis and membrane crystallization are evaluated in this work as stand-alone and integrated technologies for the recovery of Na2SO4 from aqueous solutions. When SO2 is removed from flue gases by absorption in an aqueous solution and reacts with NaOH, a reusable product (i.e., Na2SO4) of industrial interest can be obtained. For stand-alone reverse osmosis, the effect of the concentration of the feed solution and pressure is studied. For membrane crystallization, the influence of the concentration and flow rate of the feed and osmotic solutions on the process performance has been determined. The characterization of the obtained crystals shows that Na2SO4·10H2O is obtained. From the experimental results, the potential for integration of reverse osmosis and membrane crystallization is simulated. It was concluded that using a reverse osmosis unit prior to the membrane crystallization unit minimizes the total membrane area in comparison with the stand-alone processes.

Wenqi Li; Bart Van der Bruggen; Patricia Luis

2014-01-01T23:59:59.000Z

446

Technology Name  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Development Development DE-EM0000598 D&D KM-IT For the deployment of Information Technology for D&D knowledge management Page 1 of 2 Florida International University Florida D&D Knowledge Management Information Tool Challenge Deactivation and decommissioning (D&D) work is a high priority across the DOE Complex. The D&D community associated with the various DOE sites has gained extensive knowledge and experience over the years. To prevent the D&D knowledge and expertise from being lost over time an approach is needed to capture and maintain this valuable information in a universally available and easily usable system. Technical Solution The D&D KM-IT serves as a centralized repository

447

CSIR TECHNOLOGY AWARDS -2013  

E-Print Network (OSTI)

CSIR TECHNOLOGY AWARDS - 2013 GUIDELINES & PROFORMAE FOR NOMINATIONS Planning and Performance 2013 #12;CSIR TECHNOLOGY AWARDS BRIEF DETAILS ,,CSIR Technology Awards were instituted in 1990 to encourage multi-disciplinary in- house team efforts and external interaction for technology development

Jayaram, Bhyravabotla

448

Development of Novel active transport membrane devices. Phase I. Final report, 31 October 1988--31 January 1994  

SciTech Connect

The main objective of this program was to identify and develop a technique for fabricating Active Transport Materials (ATM) into lab-scale membrane devices. Air Products met this objective by applying thin film, multilayer fabrication techniques to support the AT material on a substrate membrane. In Phase IA, spiral-wound hollow fiber membrane modules were fabricated and evaluated. These nonoptimized devices were used to demonstrate the AT-based separation of carbon dioxide from methane, hydrogen sulfide from methane, and ammonia from hydrogen. It was determined that a need exists for a more cost efficient and less energy intensive process for upgrading subquality natural gas. Air Products estimated the effectiveness of ATM for this application and concluded that an optimized ATM system could compete effectively with both conventional acid gas scrubbing technology and current membrane technology. In addition, the optimized ATM system would have lower methane loss and consume less energy than current alternative processes. Air Products made significant progress toward the ultimate goal of commercializing an advanced membrane for upgrading subquality natural gas. The laboratory program focused on developing a high performance hollow fiber substrate and fabricating and evaluating ATM-coated lab-scale hollow fiber membrane modules. Selection criteria for hollow fiber composite membrane supports were developed and used to evaluate candidate polymer compositions. A poly(amide-imide), PAI, was identified for further study. Conditions were identified which produced microporous PAI support membrane with tunable surface porosity in the range 100-1000{Angstrom}. The support fibers exhibited good hydrocarbon resistance and acceptable tensile strength though a higher elongation may ultimately be desirable. ATM materials were coated onto commercial and PAI substrate fiber. Modules containing 1-50 fibers were evaluated for permselectivity, pressure stability, and lifetime.

Laciak, D.V.; Quinn, R.; Choe, G.S.; Cook, P.J.; Tsai, Fu-Jya

1994-08-01T23:59:59.000Z

449

Carbon Nanotube Membranes: Carbon Nanotube Membranes for Energy-Efficient Carbon Sequestration  

SciTech Connect

Broad Funding Opportunity Announcement Project: Porifera is developing carbon nanotube membranes that allow more efficient removal of CO2 from coal plant exhaust. Most of today’s carbon capture methods use chemical solvents, but capture methods that use membranes to draw CO2 out of exhaust gas are potentially more efficient and cost effective. Traditionally, membranes are limited by the rate at which they allow gas to flow through them and the amount of CO2 they can attract from the gas. Smooth support pores and the unique structure of Porifera’s carbon nanotube membranes allows them to be more permeable than other polymeric membranes, yet still selective enough for CO2 removal. This approach could overcome the barriers facing membrane-based approaches for capturing CO2 from coal plant exhausts.

None

2010-03-01T23:59:59.000Z

450

Lab Visits on DOE Technology Roadmap and the Technology Advisory...  

Office of Environmental Management (EM)

DOE Technology Roadmap and the Technology Advisory Board OCIO Technology Summit: High Performance Computing Lab Visits on DOE Technology Roadmap and the Technology Advisory Board...

451

INL Technology Transfer  

NLE Websites -- All DOE Office Websites (Extended Search)

Technology Transfer Through collaboration with industry partners, INL's Technology Deployment office makes available to American agencies and international organizations unique...

452

Energy Technology Solutions  

Energy.gov (U.S. Department of Energy (DOE))

Public-private partnerships transforming industry and list of commercialized technologies, knowledge-based results, and promising technologies

453

California Institute of Technology  

NLE Websites -- All DOE Office Websites (Extended Search)

California Institute of Technology o Ivan Celanovic, Principal Research Scientist, Massachusetts Institute of Technology o Geoffrey Kinsey, Director, Photovoltaic...

454

Technology Validation Fact Sheet  

Energy.gov (U.S. Department of Energy (DOE))

Fact sheet produced by the Fuel Cell Technologies Office describing hydrogen and fuel cell technology validation efforts.

455

Table II: Technical Targets for Membranes: Automotive  

NLE Websites -- All DOE Office Websites (Extended Search)

II: Technical Targets for Membranes: Automotive II: Technical Targets for Membranes: Automotive All targets must be achieved simultaneously Characteristics Units Calendar year 2000 status a 2005 2010 Membrane conductivity, operating temperature Ω-cm -1 0.1 0.1 0.1 Room temperature Ω-cm -1 -20 o C Ω-cm -1 Oxygen cross-over b mA/cm 2 5 5 2 Hydrogen cross-over b mA/cm 2 5 5 2 Cost $/kW 50 5 Operating Temperature o C 80 120 120 Durability Hours 1000 d >4000 e >5000 f Survivability c o C -20 -30 -40 Thermal cyclability in presence of condensed water yes yes yes Notes: a) Status is present day 80 o C unless otherwise noted; targets are for new membranes/CCMs b) Tested in CCM c) Indicates temperature from which bootstrapping stack must be achieved

456

IFITM Proteins Restrict Viral Membrane Hemifusion  

E-Print Network (OSTI)

an intermediate of fusion, referred to as a cold arrestedcold arrested state (CAS), PLOS Pathogens | www.plospathogens.org January 2013 | Volume 9 | Issue 1 | e1003124 Restriction of Viral Membrane Fusion

2013-01-01T23:59:59.000Z

457

Optical rheology for live cell membranes  

E-Print Network (OSTI)

We present a novel optical methodology including both instrumentation and theory aimed at retrieving the full viscoelastic information of cell membrane material properties. Red blood cells (RBC) are chosen for this study ...

Park, YongKeun, S.M. Massachusetts Institute of Technology

2007-01-01T23:59:59.000Z

458

Membrane and MEA Accelerated Stress Test Protocols  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

and MEA Accelerated Stress Test Protocols Presented at High Temperature Membrane Working Group Meeting Washington, DC May 14, 2007 T.G. Benjamin Argonne National Laboratory 2 0 10...

459

New Membranes for PEM Fuel Cells  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Membranes for PEM Fuel Cells Steve Hamrock 3M Fuel Cell Components Program 3M Center 201-1W-28 St Paul MN 55144 USA HTMWG Meeting 52705 This research was supported in part by the...

460

Aging and weathering of cool roofing membranes  

E-Print Network (OSTI)

Canada ABSTRACT Aging and weathering can reduce the solarsolar reflectance of 25 weathered roofing membranes from 25 cities across the United States and Canada.Canada. The LBNL study included measuring the spectral solar

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "nano-pore membrane technology" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.