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Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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1

GEA Development Phases | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » GEA Development Phases Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home GEA Development Phases The information for this page was taken directly from Geothermal Reporting Terms and Definitions: A Guide to Reporting Resource Development Progress and Results to the Geothermal Energy Association (GEA, November 2010) Gea.jpg The Geothermal Energy Association's (GEA) Geothermal Reporting Terms and Definitions are a guideline for geothermal developers to use when submitting geothermal resource development information to GEA for public dissemination in its annual US Geothermal Power Production and Development

2

GEA Heat Exchangers GEA Searle Cooler and Condensing Unit Ranges  

E-Print Network (OSTI)

have high efficiency EC fans as standard across the range. All our commercial unit coolers have whiteUnits GEA Searle Condensing Units are supplied as standard to a high specification with a complete controlGEA Heat Exchangers GEA Searle Cooler and Condensing Unit Ranges Top-level engineering solutions

Frandsen, Søren

3

SaGea | Open Energy Information  

Open Energy Info (EERE)

SaGea SaGea Jump to: navigation, search Name SaGea Place Cagliari, Italy Zip 9125 Sector Solar Product Cagliari-based PV developer that designs, installs and maintains equipment for solar energy generation for both private and corporate users. Coordinates 39.214525°, 9.110492° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.214525,"lon":9.110492,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

4

GEA Geothermal Summit Presentation ? Lauren Boyd | Department...  

Energy Savers (EERE)

Summit Presentation Lauren Boyd GEA Geothermal Summit Presentation Lauren Boyd GEA geothermal energy industry briefing presentation on February 26, 2013 in Washington, D.C....

5

Hydrothermal industrialization: direct heat development. Final report  

SciTech Connect

A description of hydrothermal resources suitable for direct applications, their associated temperatures, geographic distribution and developable capacity are given. An overview of the hydrothermal direct-heat development infrastructure is presented. Development activity is highlighted by examining known and planned geothermal direct-use applications. Underlying assumptions and results for three studies conducted to determine direct-use market penetration of geothermal energy are discussed.

Not Available

1982-05-01T23:59:59.000Z

6

GEA | OpenEI Community  

Open Energy Info (EERE)

GEA GEA Home Kyoung's picture Submitted by Kyoung(155) Contributor 14 October, 2013 - 20:19 Geothermal NEPA Workshop at GRC Categorical Exclusions CX Database EA EIS FONSI GEA GRC GRR NEPA On Tuesday, October 2, the Geothermal Technology Office and the National Renewable Energy Laboratory held a 1/2-day NEPA workshop. The workshop was held at the MGM Grand in Las Vegas, in conjunction with the GEA/GRC Tradeshow and Conference. Three presentations were given, describing the NEPA database and associated analysis that had been conducted in 2013. Files: application/vnd.openxmlformats-officedocument.presentationml.presentation icon 2. NEPA History - Presentation application/vnd.openxmlformats-officedocument.presentationml.presentation icon 3. Categorical Exclusions - Presentation

7

GEA Refrigeration Technologies / GEA Refrigeration Germany GmbH Wolfgang Dietrich / Dr. Ole Fredrich  

E-Print Network (OSTI)

GEA Refrigeration Technologies / GEA Refrigeration Germany GmbH Wolfgang Dietrich / Dr. Ole Technologies3 Achema 2012 // heat pumps using ammonia Industrial demand on heat in Germany Heatdemandin

Oak Ridge National Laboratory

8

GEA Group | Open Energy Information  

Open Energy Info (EERE)

Group Group Place Bochum, Germany Zip 44809 Sector Biofuels, Solar Product Bochum-based, engineering group specialising in process engineering and components for the food, pharmaceutical and petrochemical industries. GEA through its subsidiaries is involved in the solar and biofuels sector. Coordinates 51.485955°, 7.210866° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":51.485955,"lon":7.210866,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

9

Development of a Hydrothermal Spallation Drilling System for EGS Geothermal  

Open Energy Info (EERE)

Hydrothermal Spallation Drilling System for EGS Geothermal Hydrothermal Spallation Drilling System for EGS Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Development of a Hydrothermal Spallation Drilling System for EGS Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis Project Type / Topic 2 Drilling Systems Project Description Potter Drilling has recently demonstrated hydrothermal spallation drilling in the laboratory. Hydrothermal spallation drilling creates boreholes using a focused jet of superheated water, separating individual grains ("spalls") from the rock surface without contact between the rock and the drill head. This process virtually eliminates the need for tripping. Previous tests of flame-jet spallation achieved ROP of 50 ft/hr and higher in hard rock with minimal wear on the drilling assembly, but operating this technology in an air-filled borehole created challenges related to cuttings transport and borehole stability. The Potter Drilling system uses a water based jet technology in a fluid-filled borehole and as a result has the potential to achieve similarly high ROP that is uncompromised by stability or cuttings transport issues.

10

GEA Caldemon formerly known as Caldemon Iberica | Open Energy Information  

Open Energy Info (EERE)

Caldemon formerly known as Caldemon Iberica Caldemon formerly known as Caldemon Iberica Jump to: navigation, search Name GEA Caldemon (formerly known as Caldemon Iberica) Place Spain Sector Solar Product GEA Caldemon manufacturers shell and tube heat exchangers and surface condensers, commonly used in solar thermal power plants. References GEA Caldemon (formerly known as Caldemon Iberica)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. GEA Caldemon (formerly known as Caldemon Iberica) is a company located in Spain . References ↑ "GEA Caldemon (formerly known as Caldemon Iberica)" Retrieved from "http://en.openei.org/w/index.php?title=GEA_Caldemon_formerly_known_as_Caldemon_Iberica&oldid=34572

11

Hydrothermal industrialization electric-power systems development. Final report  

SciTech Connect

The nature of hydrothermal resources, their associated temperatures, geographic locations, and developable capacity are described. The parties involved in development, required activities and phases of development, regulatory and permitting requirements, environmental considerations, and time required to complete development activities ae examined in detail. These activities are put in proper perspective by detailing development costs. A profile of the geothermal industry is presented by detailing the participants and their operating characteristics. The current development status of geothermal energy in the US is detailed. The work on market penetration is summarized briefly. Detailed development information is presented for 56 high temperature sites. (MHR)

Not Available

1982-03-01T23:59:59.000Z

12

The Geothermal Technologies Office Congratulates this Year's GEA Honors Awardees  

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

On December 10, the Geothermal Energy Association announced its 2013 GEA Honors awards for advances and achievements in geothermal energy. Among this year's eleven winners and honorable mentions are five projects that the Energy Department investe

13

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

and J.C. Paraj, Hydrothermal processing of lignocellulosicHydrothermal Equipment. Journal of the Mining and Materials Processing

He, Wei

2011-01-01T23:59:59.000Z

14

Phase III - Permitting and Initial Development | Open Energy Information  

Open Energy Info (EERE)

III - Permitting and Initial Development III - Permitting and Initial Development Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home GEA Development Phase III: Permitting and Initial Development GEA Development Phases The Geothermal Energy Association's (GEA) Geothermal Reporting Terms and Definitions are a guideline for geothermal developers to use when submitting geothermal resource development information to GEA for public dissemination in its annual US Geothermal Power Production and Development Update. GEA's Geothermal Reporting Terms and Definitions serve to increase the consistency, accuracy, and reliability of industry information presented in the development updates. Phase I - Resource Procurement and Identification Phase II - Resource Exploration and Confirmation Phase III - Permitting and Initial Development

15

GRC Annual Meeting and GEA Geothermal Energy Expo | Department of Energy  

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

GRC Annual Meeting and GEA Geothermal Energy Expo GRC Annual Meeting and GEA Geothermal Energy Expo GRC Annual Meeting and GEA Geothermal Energy Expo September 29, 2013 12:00AM EDT to October 2, 2013 12:00PM EDT "A Global Resource, from Larderello to Las Vegas" This year's GRC Annual Meeting and GEA Geothermal Energy Expo will take place at the MGM Grand Hotel and Casino in Las Vegas, Nevada. This four-day event is industry's largest annual gathering of leading geothermal energy scientists, producers, renewable energy industry stakeholders, regulators, utilities, and key associated business leaders. Last year, it hosted representatives from more than 39 countries. Participants from six continents were present. In 2013, an even broader attendance is anticipated. The GRC Annual Meeting will offer technical, policy, and market conference

16

Hydrothermal research and development assessment. Task force report: projections for electric systems  

SciTech Connect

It is estimated that high temperature (greater than 150/sup 0/C or 300/sup 0/F) hydrothermal resources in the western United States have the potential for producing about 140,000 megawatts of electric power for 30 years. The objectives of the present analysis were to realistically evaluate the extent to which these resources might be utilized over the next 20 years, and to assess the probably impact of Federal programs on that utilization. The R and D assessment team interviewed industry personnel to determine the nature and the relative significance of investment decision criteria for developers and utilities. The results of these interviews were used to develop a probabilistic model to simulate the investment decision behavior of these two groups toward hydrothermal resources. Estimations of the characteristics of anticipated available resources (e.g., temperature, salinity, depth) and predictions of the geographic distribution of new resource discoveries were based upon the characteristics and distribution of known reservoirs. The impact of a minimal R and D program and the impact of expanded R and D program were estimated on the basis of its effect upon industry investment decision criteria (e.g., the cost of power). The Task Force estimates comparing three different scenarios: (1) no program, (2) minimal R and D, and (3) expanded R and D are presented.

Not Available

1982-05-01T23:59:59.000Z

17

Funding Opportunity: Geothermal Technologies Program Seeks Technologies to Reduce Levelized Cost of Electricity for Hydrothermal Development and EGS  

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

The Geothermal Technologies Program seeks non-prime mover technologies that have the potential to contribute to reducing the levelized cost of electricity from new hydrothermal development to 6/ kWh by 2020 and Enhanced Geothermal Systems (EGS) to 6/ kWh by 2030.

18

Patterns in Global Hydrothermal  

E-Print Network (OSTI)

Patterns in Global Hydrothermal Activity noaa ocean exploration Presenter: Edward T. Baker #12) High-T vents High = hydrothermal discharge Low = active or inactive discharge sites B. Davy, GNS NZ #12 Lc(km) #12;Future Directions Quantify processes: ·Employ or develop new technologies (AUVs, solid

19

Hydrothermal Processing  

SciTech Connect

This chapter is a contribution to a book on Thermochemical Conversion of Biomass being edited by Prof. Robert Brown of Iowa State University. It describes both hydrothermal liquefaction and hydrothermal gasification of biomass to fuels.

Elliott, Douglas C.

2011-03-11T23:59:59.000Z

20

Hydrothermal Systems Rock Deformation and Geodynamics  

E-Print Network (OSTI)

Update Seminar Process Modelling of Hydrothermal Systems using SHEMAT / Processing SHEMAT 20 - 22 August to develop a process understanding of reactive transport in hydrothermal systems and to make responsible.rwth-academy.com/geophysics.html With contributions from #12;Process Modelling of Hydrothermal Systems using SHEMAT / Processing SHEMAT Hydrothermal

Note: This page contains sample records for the topic "hydrothermal gea development" 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

Development of hydrothermal liquefaction and upgrading technologies for lipid-extracted algae conversion to liquid fuels  

Science Journals Connector (OSTI)

Abstract Bench-scale tests were performed for lipid-extracted microalgae (LEA) conversion to liquid fuels via hydrothermal liquefaction (HTL) and upgrading processes. Process simulation and economic analysis for a large-scale LEA HTL and upgrading system were developed based on the best available experimental results. The system assumed an LEA feed rate of 608dry metric tons/day and that the feedstock was converted to a crude HTL bio-oil and further upgraded via hydrotreating and hydrocracking to produce liquid fuels, mainly alkanes. Performance and cost results demonstrated that HTL and upgrading is effective for converting LEA to liquid fuels. The liquid fuels annual yield was estimated to be 26.9million gallon gasoline-equivalent (GGE) and the overall energy efficiency on a higher heating value (HHV) basis was estimated to be 69.5%. The variation range of the minimum fuel selling price (MFSP) was estimated to be $2.07 to $7.11/GGE by combining the effects of selected process factors. Key factors affecting the production cost were identified to be the LEA feedstock cost, final products yields, and the upgrading equipment cost. The impact of plant scale on MFSP was also investigated.

Yunhua Zhu; Karl O. Albrecht; Douglas C. Elliott; Richard T. Hallen; Susanne B. Jones

2013-01-01T23:59:59.000Z

22

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

Hydrothermal gasification of biomass and organic wastes. Thewaste, and organic waste from anaerobic wastewater digester and black liquid from paper pulping process have been investigated in the supercritical water gasificationgasification normally exceeds 22MPa [131]. Flowable feedstocks, such as woody waste,

He, Wei

2011-01-01T23:59:59.000Z

23

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

1992, Texaco Inc. : US. EnerTech Environmental, I. Thewas also developed by EnerTech to prepare solid feedstock

He, Wei

2011-01-01T23:59:59.000Z

24

Hydrothermal Reservoirs | Open Energy Information  

Open Energy Info (EERE)

Hydrothermal Reservoirs Hydrothermal Reservoirs Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Hydrothermal Reservoirs Dictionary.png Hydrothermal Reservoir: Hydrothermal Reservoirs are underground zones of porous rock containing hot water and steam, and can be naturally occurring or human-made. Other definitions:Wikipedia Reegle Natural, shallow hydrothermal reservoirs naturally occurring hot water reservoirs, typically found at depths of less than 5 km below the Earth's surface where there is heat, water and a permeable material (permeability in rock formations results from fractures, joints, pores, etc.). Often, hydrothermal reservoirs have an overlying layer that bounds the reservoir and also serves as a thermal insulator, allowing greater heat retention. If hydrothermal reservoirs

25

Hydrothermal System | Open Energy Information  

Open Energy Info (EERE)

Hydrothermal System Hydrothermal System (Redirected from Hydrothermal Systems) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Hydrothermal Systems Geothermal Technologies There are many types of Geothermal Technologies that take advantage of the earth's heat: Hydrothermal Systems Enhanced Geothermal Systems (EGS) Sedimentary Geothermal Systems Co-Produced Geothermal Systems Geothermal Direct Use Ground Source Heat Pumps Dictionary.png Hydrothermal Systems: A hydrothermal system is one that included fluid, heat, and permeability in a naturally occurring geological formation for the production of electricity. Other definitions:Wikipedia Reegle Geothermal production well at Imperial Valley, California. The drilling of production wells, such as this one in southern California, results in

26

hydrothermal | OpenEI  

Open Energy Info (EERE)

hydrothermal hydrothermal Dataset Summary Description No description given. Source National Renewable Energy Laboratory Date Released July 03rd, 2012 (2 years ago) Date Updated July 03rd, 2012 (2 years ago) Keywords biopower csp geothermal hydropower hydrothermal Renewable Energy Technical Potential rooftop United States utility-scale wind Data text/csv icon United States Renewable Energy Technical Potential (csv, 7.7 KiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Time Period License License Open Data Commons Public Domain Dedication and Licence (PDDL) Comment Rate this dataset Usefulness of the metadata Average vote Your vote Usefulness of the dataset Average vote Your vote Ease of access Average vote Your vote Overall rating Average vote Your vote

27

The BGU/CERN solar hydrothermal reactor  

E-Print Network (OSTI)

We describe a novel solar hydrothermal reactor (SHR) under development by Ben Gurion University (BGU) and the European Organization for Nuclear Research CERN. We describe in broad terms the several novel aspects of the device and, by extension, of the niche it occupies: in particular, enabling direct off-grid conversion of a range of organic feedstocks to sterile useable (solid, liquid) fuels, nutrients, products using only solar energy and water. We then provide a brief description of the high temperature high efficiency panels that provide process heat to the hydrothermal reactor, and review the basics of hydrothermal processes and conversion taking place in this. We conclude with a description of a simulation of the pilot system that will begin operation later this year.

Bertolucci, Sergio; Caspers, Fritz; Garb, Yaakov; Gross, Amit; Pauletta, Stefano

2014-01-01T23:59:59.000Z

28

Hydrothermal Alteration | Open Energy Information  

Open Energy Info (EERE)

Hydrothermal Alteration Hydrothermal Alteration Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Hydrothermal Alteration Dictionary.png Hydrothermal Alteration: No definition has been provided for this term. Add a Definition Opalized rock is often valued for its spectacular colors and it may indicate past hydrothermal activity (reference: https://uwaterloo.ca/earth-sciences-museum/what-earth/what-earth-minerals/what-earth-precious-opal) The heat and minerals of hydrothermal waters may result in the chemical alteration of rocks that it comes in contact with. The minerals that result from this alteration may be evidence of past hydrothermal activity. Opalization - alteration to opal. Argillization- alteration to clay minerals such as smectite, illite, and kaolinite which often form caprocks.

29

Life and hydrothermal vents  

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

Life and hydrothermal vents Life and hydrothermal vents Name: williamh Status: N/A Age: N/A Location: N/A Country: N/A Date: Around 1993 Question: Are there biological communities near hydrothermal vents in the ocean? Is there any life inside the hydrothermal vent? Replies: If the presence of microorganisms in hot springs and geysers are any indication, I am certain there is life inside hydrothermal vents. These heat loving organisms are termed "thermophiles" and thrive where other life dies. They are able to survive in extreme heat due to the unique way their proteins are synthesized. The May 1993 Discover has a special article on thermophiles. wizkid Life at high temperature became very interesting to molecular biologists recently. The enormously useful technique known as PCR, (polymerase chain reaction), by which very small amounts of rare DNA can be amplified to large concentrations (Jurassic Park!), depends on having a DNA polymerase (the enzyme that synthesizes complementary DNA strands during replication of chromosomes), that can work at high temperatures, or at least can survive repeated high temperature cycles. PCR depends on synthesis of DNA followed by forced separation of the daughter strands at high temperature, followed by new synthesis, to amplify DNA exponentially. At any rate, normal bacterial polymerase will not work because the high temperature cycles kill it. Enter the now infamous, patented Taq polymerase, isolated from Thermus aquaticus, a hot spring bacterium, which works after heating to up to 94 C! So knowledge of life at high temperature allowed molecular biologists to get PCR to work, with all its benefits in cloning very rare genes and amplifying small amounts of DNA for forensic work etc.

30

Catalytic Hydrothermal Gasification of Biomass  

SciTech Connect

A recent development in biomass gasification is the use of a pressurized water processing environment in order that drying of the biomass can be avoided. This paper reviews the research undertaken developing this new option for biomass gasification. This review does not cover wet oxidation or near-atmospheric-pressure steam-gasification of biomass. Laboratory research on hydrothermal gasification of biomass focusing on the use of catalysts is reviewed here, and a companion review focuses on non-catalytic processing. Research includes liquid-phase, sub-critical processing as well as super-critical water processing. The use of heterogeneous catalysts in such a system allows effective operation at lower temperatures, and the issues around the use of catalysts are presented. This review attempts to show the potential of this new processing concept by comparing the various options under development and the results of the research.

Elliott, Douglas C.

2008-05-06T23:59:59.000Z

31

Rational control of hydrothermal nanowire synthesis and its applications  

E-Print Network (OSTI)

Hydrothermal nanowire synthesis is a rapidly emerging nanowire discipline that enables low temperature growth and batch process. It has a major impact on the development of novel energy conversion devices, high density ...

Joo, Jaebum

2010-01-01T23:59:59.000Z

32

Hydrothermal System | Open Energy Information  

Open Energy Info (EERE)

(Redirected from Hydrothermal) (Redirected from Hydrothermal) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Hydrothermal Systems Geothermal Technologies There are many types of Geothermal Technologies that take advantage of the earth's heat: Hydrothermal Systems Enhanced Geothermal Systems (EGS) Sedimentary Geothermal Systems Co-Produced Geothermal Systems Geothermal Direct Use Ground Source Heat Pumps Dictionary.png Hydrothermal Systems: A hydrothermal system is one that included fluid, heat, and permeability in a naturally occurring geological formation for the production of electricity. Other definitions:Wikipedia Reegle Geothermal production well at Imperial Valley, California. The drilling of production wells, such as this one in southern California, results in one-third to one-half of the cost of a geothermal project. Copyright ©

33

Hydrothermal Deposition | Open Energy Information  

Open Energy Info (EERE)

Hydrothermal Deposition Hydrothermal Deposition Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Hydrothermal Deposition Dictionary.png Hydrothermal Deposition: No definition has been provided for this term. Add a Definition Quartz veins indicate ancient fluid flow, possibly the result of a hydrothermal system (reference: http://www.nvcc.edu/home/cbentley/dc_rocks/) Tufa mounds indicate the location of extinct hot springs. In this photo they show the ancient extent of the surface manifestations at Mono Lake, CA (reference: http://news.medill.northwestern.edu/climatechange/page.aspx?id=170704)(photo by Scott Stine) Hydrothermal water carries minerals as it travels through the crust. These minerals are often deposited as pressure decreases as the fluid approaches

34

HYDROTHERMAL PROCESSING OF BaTiO 3/POLYMER FILMS Elliott B. Slamovich and Ilhan A. Aksay  

E-Print Network (OSTI)

HYDROTHERMAL PROCESSING OF BaTiO 3/POLYMER FILMS Elliott B. Slamovich and Ilhan A. Aksay Department temperature used in hydrothermal processing. BACKGROUND Over the last decade efforts have increased to develop hydrothermal processing not only to fabricate ceramics, but also to form thin film composites containing

Aksay, Ilhan A.

35

Other Hydrothermal Deposits | Open Energy Information  

Open Energy Info (EERE)

hydrothermal deposits dot the landscape at the Hverir Geothermal Area, Iceland. Photo by Darren Atkins User-specified field for unlisted hydrothermally deposited rock and...

36

Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange  

Open Energy Info (EERE)

Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange on Openei Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange on Openei Abstract Though exploring for hydrothermal resources is not new, advances in exploration technologies and the pursuit of less visible resources have created a need to outline exploration best practices. This multi-year study outlines 21 geothermal exploration regions in the Western United States. These regions were developed based on the U.S. Geological Survey (USGS) physiographic regions, then adjusted to fit geothermal parameters such as differences in geologic regime, structure, heat source, surface effects

37

Hydrothermal System | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Hydrothermal Systems Geothermal Technologies There are many types of Geothermal Technologies that take advantage of the earth's heat: Hydrothermal Systems Enhanced Geothermal Systems (EGS) Sedimentary Geothermal Systems Co-Produced Geothermal Systems Geothermal Direct Use Ground Source Heat Pumps Dictionary.png Hydrothermal Systems: A hydrothermal system is one that included fluid, heat, and permeability in a naturally occurring geological formation for the production of electricity. Other definitions:Wikipedia Reegle Geothermal production well at Imperial Valley, California. The drilling of production wells, such as this one in southern California, results in one-third to one-half of the cost of a geothermal project. Copyright ©

38

Hydrothermal Growth of Brucite Crystals  

Science Journals Connector (OSTI)

Brucite occurs most commonly in nature as an alteration product of periclase; it is also found as a low-temperature hydrothermal vein mineral in serpentinites and in chloritic schists.1...There hav...

Kazuo Nakamura; Shin-Ichi Hirano

1989-01-01T23:59:59.000Z

39

Hydrothermal Processing of Wet Wastes  

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

Breakout Session 3AConversion Technologies III: Energy from Our WasteWill we Be Rich in Fuel or Knee Deep in Trash by 2025? Hydrothermal Processing of Wet Wastes James R. Oyler, President, Genifuel Corporation

40

Biocatalytic transformations of hydrothermal fluids  

Science Journals Connector (OSTI)

...emission into oxygenated ambient seawater. The large metabolic and physiological...emission into oxygenated ambient seawater. The large metabolic and physiological...DNA (the reproducing genetic storage for each species), individual...where entrained oxygenated seawater mixes with hydrothermal fluid...

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" 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

Geothermal hydrothermal direct heat use: US market size and market penetration estimates  

SciTech Connect

This study estimates the future regional and national market penetration path of hydrothermal geothermal direct heat applications in the United States. A Technology Substitution Model (MARPEN) is developed and used to estimate the energy market shares captured by low-temperature (50 to 150/sup 0/C) hydrothermal geothermal energy systems over the period 1985 to 2020. The sensitivity of hydrothermal direct heat market shares to various government hydrothermal commercialization policies is examined. Several substantive recommendations to help accelerate commercialization of geothermal direct heat utilization in the United States are indicated and possible additional analyses are discussed.

El Sawy, A.H.; Entingh, D.J.

1980-09-01T23:59:59.000Z

42

Hydrothermal combustion of biofuels in supercritical water  

SciTech Connect

Supercritical water oxidation (SCWO) has long been recognized as a safe, clean and energy efficient method for destroying a wide range of organic materials and hazardous wastes. As SCWO systems operate at elevated pressure, all effluent streams are fully contained allowing efficient recovery of thermal energy using compact heat exchangers. Water vapor produced by the combustion efficiency, especially for fuels with increasing moisture content such as biomass. This paper compares the performance of a simple Rankine vapor power cycle which derives it`s heat input from (1) a hydrothermal combustion system, and (2) a conventionally-fired steam boiler. The study is based on a hypothetical cellulose-based organic fuel with a higher heating value of 7,000 BT/1bm (dry). For a constant organic feedrate of 100 tons/day (bone dry) mixed in 20:80 fuel/water ratio with water, the calculated net electric power output from the 31.93%. Whereas, for an organic feedrate of 100 tons/day (bone dry) with zero of 5,382 kW, at an overall thermal efficiency of 31.48%. The hydrothermal combustion power cycle is unaffected by free moisture in the fuel, and thereby uniquely well-suited for use in biomass power generation applications. The hydrothermal combustion process is exceptionally clean burning, and allows full control over carbon dioxide and SOx emissions. NOx levels are inherently ultra-low due to lower combustion temperatures. Hydrothermal combustion technology is ready for pilot-scale engineering development and demonstration.

McGuinness, T.G. [Summit Research Corporation, Sante Fe, NM (United States); Marentis, R. [Summit Research Corporation, Allentown, PA (United States)

1994-12-31T23:59:59.000Z

43

Annual US Geothermal Power Production and Development Report | Open Energy  

Open Energy Info (EERE)

US Geothermal Power Production and Development Report US Geothermal Power Production and Development Report Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Annual US Geothermal Power Production and Development Report Details Activities (0) Areas (0) Regions (0) Abstract: To increase the accuracy and value of information presented in its annual US Geothermal Power Production and Development Report, the Geothermal Energy Association (GEA) developed a reporting system, known as the Geothermal Reporting Terms and Definitions, in 2010. The Geothermal Reporting Terms and Definitions serve as a guideline to project developers in reporting geothermal project development information to the GEA. A basic understanding of the Geothermal Reporting Terms and Definitions will also aid the reader in fully understanding the information presented in this

44

GEOLOGY AND HYDROTHERMAL ALTERATION OF THE RAFT RIVER GEOTHERMAL SYSTEM,  

Open Energy Info (EERE)

GEOLOGY AND HYDROTHERMAL ALTERATION OF THE RAFT RIVER GEOTHERMAL SYSTEM, GEOLOGY AND HYDROTHERMAL ALTERATION OF THE RAFT RIVER GEOTHERMAL SYSTEM, IDAHO Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: GEOLOGY AND HYDROTHERMAL ALTERATION OF THE RAFT RIVER GEOTHERMAL SYSTEM, IDAHO Details Activities (3) Areas (1) Regions (0) Abstract: The Raft River geothermal system is located in southern Idaho, near the Utah-Idaho state boarder in the Raft River Valley. The field, which is owned and operated by U.S. Geothermal, has been selected as an EGS demonstration site by the U. S. Department of Energy. This paper summarizes ongoing geologic and petrologic investigations being conducted in support of this project. The reservoir is developed in fractured Proterozoic schist and quartzite, and Archean quartz monzonite cut by younger diabase

45

Structural Settings Of Hydrothermal Outflow- Fracture Permeability  

Open Energy Info (EERE)

Settings Of Hydrothermal Outflow- Fracture Permeability Settings Of Hydrothermal Outflow- Fracture Permeability Maintained By Fault Propagation And Interaction Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Structural Settings Of Hydrothermal Outflow- Fracture Permeability Maintained By Fault Propagation And Interaction Details Activities (1) Areas (1) Regions (0) Abstract: Hydrothermal outflow occurs most commonly at the terminations of individual faults and where multiple faults interact. These areas of fault propagation and interaction are sites of elevated stress termed breakdown regions. Here, stress concentrations cause active fracturing and continual re-opening of fluid-flow conduits, permitting long-lived hydrothermal flow despite potential clogging of fractures due to mineral precipitation. As

46

Hydrothermal Exploration Data Gap Analysis Update  

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

Hydrothermal Exploration Data Gap Analysis presentation by Kate Young, Dan Getman, and Ariel Esposito at the 2012 Peer Review Meeting on May 10, 2012

47

Colorado's Hydrothermal Resource Base - An Assessment | Open...  

Open Energy Info (EERE)

Hydrothermal Resource Base - An Assessment Author Richard Howard Pearl Published Colorado Geological Survey in Cooperation with the U.S. Department of Energy, 1979 Report...

48

Basement Structure and Implications for Hydrothermal Circulation...  

Open Energy Info (EERE)

collapse. Recent hydrothermal alteration occurs along Discovery fault strands and composite vertical offset of intracaldera volcanic units across the entire fault zone may be...

49

Production of Advanced Biofuels via Liquefaction Hydrothermal...  

Office of Scientific and Technical Information (OSTI)

Laboratory Production of Advanced Biofuels via Liquefaction Golden, Colorado April 5, 2013 REPORT 30352.0001 HYDROTHERMAL LIQUEFACTION REACTOR DESIGN REPORT TABLE OF CONTENTS...

50

Other Hydrothermal Alteration Products | Open Energy Information  

Open Energy Info (EERE)

alterations compose the landscape at Kerlingarfjoll Geothermal area, Iceland. Photo by Darren Atkins User-specified field for unlisted hydrothermal alteration products....

51

Hydrothermal Exploration Data Gap Analysis Update  

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

term using rapid reconnaissance surveys, surface exploration, stress measurements, fracture mapping, temperature gradient drilling. Accelerate near-term hydrothermal growth by:...

52

Structural Settings Of Hydrothermal Outflow- Fracture Permeability...  

Open Energy Info (EERE)

Settings Of Hydrothermal Outflow- Fracture Permeability Maintained By Fault Propagation And Interaction Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal...

53

Hydraulic characterization of hydrothermally altered Nopal tuff  

SciTech Connect

Understanding the mechanics of variably saturated flow in fractured-porous media is of fundamental importance to evaluating the isolation performance of the proposed high-level radioactive waste repository for the Yucca Mountain site. Developing that understanding must be founded on the analysis and interpretation of laboratory and field data. This report presents an analysis of the unsaturated hydraulic properties of tuff cores from the Pena Blanca natural analog site in Mexico. The basic intent of the analysis was to examine possible trends and relationships between the hydraulic properties and the degree of hydrothermal alteration exhibited by the tuff samples. These data were used in flow simulations to evaluate the significance of a particular conceptual (composite) model and of distinct hydraulic properties on the rate and nature of water flow.

Green, R.T.; Meyer-James, K.A. [Southwest Research Institute, San Antonio, TX (United States); Rice, G. [George Rice and Associates, San Antonio, TX (United States)

1995-07-01T23:59:59.000Z

54

Whole Algae Hydrothermal Liquefaction Technology Pathway  

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

This technology pathway case investigates the feasibility of using whole wet microalgae as a feedstock for conversion via hydrothermal liquefaction. Technical barriers and key research needs have been assessed in order for the hydrothermal liquefaction of microalgae to be competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks.

55

AUTOMATED PLANNING FOR HYDROTHERMAL VENT PROSPECTING USING  

E-Print Network (OSTI)

AUTOMATED PLANNING FOR HYDROTHERMAL VENT PROSPECTING USING AUVS by ZEYN A SAIGOL A thesis submitted of searching the ocean floor for hydrothermal vents, using autonomous underwater vehicles (AUVs process (POMDP), but with a very large state space (of the order of 10123 states). This size of problem

Yao, Xin

56

Supply of geothermal power from hydrothermal sources: A study of the cost of power in 20 and 40 years  

SciTech Connect

This study develops estimates for the amount of hydrothermal geothermal power that could be on line in 20 and 40 years. This study was intended to represent a snapshot'' in 20 and 40 years of the hydrothermal energy available for electric power production should a market exist for this power. This does not represent the total or maximum amount of hydrothermal power, but is instead an attempt to estimate the rate at which power could be on line constrained by the exploration, development and support infrastructure available to the geothermal industry, but not constrained by the potential market for power.

Petty, S. (Petty (Susan) Consulting, Solano Beach, CA (United States)); Livesay, B.J. (Livesay Consultants, Inc., Encinitas, CA (United States)); Long, W.P. (Carlin Gold Co., Inc., Grass Valley, CA (United States)); Geyer, J. (Geyer (John) and Associates, Vancouver, WA (United States))

1992-11-01T23:59:59.000Z

57

NMR Studies of Cu/zeolite SCR Catalysts Hydrothermally Aged with...  

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

Cuzeolite SCR Catalysts Hydrothermally Aged with Urea. NMR Studies of Cuzeolite SCR Catalysts Hydrothermally Aged with Urea. Abstract: The effects of hydrothermal aging of Cu...

58

Fluid Inclusions in Hydrothermally Synthesized Brucite Crystals  

Science Journals Connector (OSTI)

Brucite crystals were grown hydrothermally from Mg(OH)2 powder in 7.5 and 15 mol% NaOH solutions. It is established from the observation of the surface microtopographs that the crystals grew by the spiral mechani...

Kazuo Nakamura; Shin-Ichi Hirano

1989-01-01T23:59:59.000Z

59

Water geochemistry of hydrothermal systems, Wood River District, Idaho  

SciTech Connect

Hydrothermal systems of the Wood River District, central Idaho, have been studied by geologic mapping of thermal spring areas and geochemical investigations of thermal and non-thermal waters. This report summarizes the new geochemical data gathered during the study. Integration of the results of geological and geochemical studies has led to development of a target model for hydrothermal resources on the margin of the Idaho Batholith. Warfield Hot Springs, with temperatures up to 58/sup 0/C, flow from a major shear zone along the margin of an apophysis of the batholith. Hailey Hot Springs, with temperatures up to 60/sup 0/C, occur in an area of multiple thrust faults and newly recognized, closely spaced normal faults in the Paleozoic Milligen and Wood River Formations, 2.5 km from a highly brecciated batholith contact. Other Wood River district hydrothermal systems also occur along the margins of batholith apophyses or in adjacent highly fractured Paleozoic rocks, where there are indications of batholith rocks at shallow depths (100 to 300 m) in water wells.

Zeisloft, J.; Foley, D.; Blackett, R.

1983-08-01T23:59:59.000Z

60

Anhydrite precipitation and the extent of hydrothermal recharge zones at ocean ridge crests  

E-Print Network (OSTI)

) and hydrothermal processes; 8135 Tectonophysics: Hydrothermal systems (8424); 3035 Marine Geology and Geophysics: Midocean ridge processes; 4832 Oceanography: Biological and Chemical: Hydrothermal systems; KEYWORDS, and biological processes on Earth. Seafloor hydrothermal systems transport nearly 33% of the global oceanic heat

Manga, Michael

Note: This page contains sample records for the topic "hydrothermal gea development" 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

Reconnaissance of the hydrothermal resources of Utah  

SciTech Connect

Geologic factors in the Basin and Range province in Utah are more favorable for the occurrence of geothermal resources than in other areas on the Colorado Plateaus or in the Middle Rocky Mountains. These geologic factors are principally crustal extension and crustal thinning during the last 17 million years. Basalts as young as 10,000 years have been mapped in the area. High-silica volcanic and intrusive rocks of Quaternary age can be used to locate hydrothermal convection systems. Drilling for hot, high-silica, buried rock bodies is most promising in the areas of recent volcanic activity. Southwestern Utah has more geothermal potential than other parts of the Basin and Range province in Utah. The Roosevelt Hot Springs area, the Cove Fort-Sulphurdale area, and the area to the north as far as 60 kilometers from them probably have the best potential for geothermal development for generation of electricity. Other areas with estimated reservoir temperatures greater than 150/sup 0/C are Thermo, Monroe, Red Hill (in the Monroe-Joseph Known Geothermal Resource Area), Joseph Hot Springs, and the Newcastle area. The rates of heat and water discharge are high at Crater, Meadow, and Hatton Hot Springs, but estimated reservoir temperatures there are less than 150/sup 0/C. Additional exploration is needed to define the potential in three additional areas in the Escalante Desert. 28 figs., 18 tabs.

Rush, F.E.

1983-01-01T23:59:59.000Z

62

RESEARCH Open Access The fate of lignin during hydrothermal  

E-Print Network (OSTI)

RESEARCH Open Access The fate of lignin during hydrothermal pretreatment Heather L Trajano1 lignin removal, relocation, and/or modification during hydrothermal pretreatment. Phase transition, depolymerization/repolymerization, and solubility effects may all influence these lignin changes. To better

California at Riverside, University of

63

Hydrothermal monitoring data from the Cascade Range, northwestern United States  

E-Print Network (OSTI)

Hydrothermal monitoring data from the Cascade Range, northwestern United States By S.E. Ingebritsen., and Evans, W.C., 2014, Hydrothermal monitoring data from the Cascade Range, northwestern United States: U ...................................................................................................................................27 (8) Carbonate springs

64

Controls on the physics and chemistry of seafloor hydrothermal circulation  

Science Journals Connector (OSTI)

...convected at the supply temperature T1, ignoring...A (1997) Controls on hydrothermal...rock from these temperatures to the temperatures...A (1997) Controls on hydrothermal...conditions. The temperature at the base of...

1997-01-01T23:59:59.000Z

65

The Effects of Hydrothermal Agingon a Commercial Cu SCR Catalyst  

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

Examines the effect of hydrothermal aging on the Nox reduction over a commercial Cu-zeolite SCR catalyst.

66

Characterization of advanced preprocessed materials (Hydrothermal)  

SciTech Connect

The initial hydrothermal treatment parameters did not achieve the proposed objective of this effort; the reduction of intrinsic ash in the corn stover. However, liquid fractions from the 170C treatments was indicative that some of the elements routinely found in the ash that negatively impact the biochemical conversion processes had been removed. After reviewing other options for facilitating ash removal, sodium-citrate (chelating agent) was included in the hydrothermal treatment process, resulting in a 69% reduction in the physiological ash. These results indicated that chelation hydrothermal treatment is one possible approach that can be utilized to reduce the overall ash content of feedstock materials and having a positive impact on conversion performance.

Rachel Emerson; Garold Gresham

2012-09-01T23:59:59.000Z

67

Calibrated Hydrothermal Parameters, Barrow, Alaska, 2013  

DOE Data Explorer (OSTI)

A model-observation-experiment process (ModEx) is used to generate three 1D models of characteristic micro-topographical land-formations, which are capable of simulating present active thaw layer (ALT) from current climate conditions. Each column was used in a coupled calibration to identify moss, peat and mineral soil hydrothermal properties to be used in up-scaled simulations. Observational soil temperature data from a tundra site located near Barrow, AK (Area C) is used to calibrate thermal properties of moss, peat, and sandy loam soil to be used in the multiphysics Advanced Terrestrial Simulator (ATS) models. Simulation results are a list of calibrated hydrothermal parameters for moss, peat, and mineral soil hydrothermal parameters.

Adam Atchley; Scott Painter; Dylan Harp; Ethan Coon; Cathy Wilson; Anna Liljedahl; Vladimir Romanovsky

68

Potential impact of R and D on hydrothermal energy cost  

SciTech Connect

The potentital impact of the DOE/Geothermal Technology Development programs on the cost of geothermal power has been estimated using the computer program IMGEO.300. Results indicate a potential 30 to 40% cost reduction for hydrothermal systems with a 40 to 50% cost reduction potential for binary systems. The purpose of this document is to demonstrate the use of IMGEO. The initial results are tentative because the R and D goals have not been finalized and the code has not been completely validated.

Traeger, R.K.

1988-01-01T23:59:59.000Z

69

1 INRODUCTION The physico-chemical conditions in hydrothermal  

E-Print Network (OSTI)

processes. At present, however, our greatest unknown with respect to hydrothermal systems is time1 INRODUCTION The physico-chemical conditions in hydrothermal systems change through time and have made great progress understanding the physico-chemical conditions that control hydrothermal

Pichler, Thomas

70

Magma to Microbe: Modeling Hydrothermal Processes at Ocean Spreading Centers  

E-Print Network (OSTI)

215 Magma to Microbe: Modeling Hydrothermal Processes at Ocean Spreading Centers Geophysical is very limited. Low-temperature diffuse vent fluids, ubiquitous at hydrothermal systems, provide one microorganisms from diffuse hydrothermal vent fluids and the subseafloor at basalt-hosted mid-ocean ridges

Holden, James F.

71

Hydrothermal systems on Mars:an assessment of present evidence  

E-Print Network (OSTI)

sources, and hydrothermal processes have alsobeenproposed asamechanism foraquifer rechargeneededtoHydrothermal systems on Mars:an assessment of present evidence Jack D. Farmer NASA Ames ResearchCenter, M S 2 3 9 4 , Moffett Field, CA 94035-1000, U S A Abstract. Hydrothermal processeshavebeen

Farmer, Jack D.

72

ORIGINAL PAPER Hydrothermal process synthesized electrocatalytic multi-walled  

E-Print Network (OSTI)

ORIGINAL PAPER Hydrothermal process synthesized electrocatalytic multi-walled carbon nanotubes as MWCNTs-Au, have been successfully prepared by a facile hydrothermal pro- cess of gold(III) chloride (Au. Keywords Hydrothermal Á Composites Á Au microparticles Á Multi-walled carbon nanotubes Á Ethanol oxidation

Guo, John Zhanhu

73

Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot  

Open Energy Info (EERE)

Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot Springs Thermal Area, Utah Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot Springs Thermal Area, Utah Details Activities (3) Areas (1) Regions (0) Abstract: Chemical interaction of thermal fluids with reservoir rock in the Roosevelt Hot Springs thermal area, Utah, has resulted in the development of characteristic trace-element dispersion patterns. Multielement analyses of surface rock samples, soil samples and drill cuttings from deep exploration wells provide a three-dimensional perspective of chemical redistribution within this structurally-controlled hot-water geothermal system. Five distinctive elemental suites of chemical enrichment are

74

PRIMAL AND DUAL METHODS FOR UNIT COMMITMENT IN A HYDRO-THERMAL POWER SYSTEM  

E-Print Network (OSTI)

comprising thermal and pumped-storage hydro units a large-scale mixed-integer optimization model is developed of big coal red blocks with several pumped storage plants of di ering e ciencies provides the mainPRIMAL AND DUAL METHODS FOR UNIT COMMITMENT IN A HYDRO-THERMAL POWER SYSTEM R. Gollmer1 , A. Moller

Römisch, Werner

75

Iridium material for hydrothermal oxidation environments  

DOE Patents (OSTI)

A process for hydrothermal oxidation of combustible materials in which, during at least a part of the oxidation, corrosive material is present and makes contact with at least a portion of the apparatus over a contact area on the apparatus. At least a portion of the contact surface area comprises iridium, iridium oxide, an iridium alloy, or a base metal overlaid with an iridium coating. Iridium has been found to be highly resistant to environments encountered in the process of hydrothermal oxidation. Such environments typically contain greater than 50 mole percent water, together with oxygen, carbon dioxide, and a wide range of acids, bases and salts. Pressures are typically about 27.5 to about 1000 bar while temperatures range as high as 800.degree. C.

Hong, Glenn T. (Tewksbury, MA); Zilberstein, Vladimir A. (Brookline, MA)

1996-01-01T23:59:59.000Z

76

Colorado's hydrothermal resource base: an assessment  

SciTech Connect

As part of its effort to more accurately describe the nations geothrmal resource potential, the US Department of Energy/Division of Geothermal Energy contracted with the Colorado Geological survey to appraise the hydrothermal (hot water) geothermal resources of Colorado. Part of this effort required that the amount of energy that could possibly be contained in the various hydrothermal systems in Colorado be estimated. The findings of that assessment are presented. To make these estimates the geothermometer reservoir temperatures estimated by Barrett and Pearl (1978) were used. In addition, the possible reservoir size and extent were estimated and used. This assessment shows that the total energy content of the thermal systems in Colorado could range from 4.872 x 10{sup 15} BTU's to 13.2386 x 10{sup 15} BTU's.

Pearl, R.H.

1981-01-01T23:59:59.000Z

77

Surficial Extent And Conceptual Model Of Hydrothermal System At Mount  

Open Energy Info (EERE)

Surficial Extent And Conceptual Model Of Hydrothermal System At Mount Surficial Extent And Conceptual Model Of Hydrothermal System At Mount Rainier, Washington Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Surficial Extent And Conceptual Model Of Hydrothermal System At Mount Rainier, Washington Details Activities (4) Areas (2) Regions (0) Abstract: A once massive hydrothermal system was disgorged from the summit of Mount Rainier in a highly destructive manner about 5000 years ago. Today, hydrothermal processes are depositing clayey alteration products that have the potential to reset the stage for similar events in the future. Areas of active hydrothermal alteration occur in three representative settings: 1. (1) An extensive area (greater than 12,000 m2) of heated ground and slightly acidic boiling-point fumaroles at 76-82°C at

78

SciTech Connect: Whole Algae Hydrothermal Liquefaction Technology...  

Office of Scientific and Technical Information (OSTI)

in order for the hydrothermal liquefaction of microalgae to be competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks. Authors: Biddy,...

79

Colorado's hydrothermal resource base---an assessment | Open...  

Open Energy Info (EERE)

Colorado's hydrothermal resource base---an assessment Author R.H. Pearl Published Colorado Geological Survey Resource Series, 1979 DOI Not Provided Check for DOI availability:...

80

Possible Origin of Improved High Temperature Performance of Hydrotherm...  

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

Aged CuBeta Zeolite Catalysts. Abstract: The hydrothermal stability of Cubeta NH3 SCR catalysts are explored here. In particular, this paper focuses on the interesting...

Note: This page contains sample records for the topic "hydrothermal gea development" 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

Geothermal: Sponsored by OSTI -- Hydrothermal energy: a source...  

Office of Scientific and Technical Information (OSTI)

Hydrothermal energy: a source of energy for alcohol production Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On HomeBasic Search About...

82

Energy Densification of Lignocellulosic Biomass via Hydrothermal Carbonization and Torrefaction .  

E-Print Network (OSTI)

??The work presented in this study demonstrated the potential of hydrothermal carbonization (HTC) of biomass for the production of carbon-rich solid fuel, known as hydrochar (more)

Kambo, Harpreet Singh

2014-01-01T23:59:59.000Z

83

New Evidence On The Hydrothermal System In Long Valley Caldera...  

Open Energy Info (EERE)

Hydrothermal System In Long Valley Caldera, California, From Wells, Fluid Sampling, Electrical Geophysics, And Age Determinations Of Hot-Spring Deposits Jump to: navigation,...

84

Hydrothermal Exploration at Pilgrim Hot Springs, Alaska | Department...  

Energy Savers (EERE)

Springs, Alaska Hydrothermal Exploration at Pilgrim Hot Springs, Alaska Lower Temperature Geothermal Resources are Yielding Power Thanks to Energy Department Investments Lower...

85

Hydrothermal Heat Discharge In The Cascade Range, Northwestern...  

Open Energy Info (EERE)

Heat Discharge In The Cascade Range, Northwestern United States Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Hydrothermal Heat Discharge In...

86

Altered Tectonic and Hydrothermal Breccias in Corehole VC-1,...  

Open Energy Info (EERE)

we will briefly discuss each of the major deep breccias in VC-l, examine the style, intensity and paragenesis of their hydrothermal alteration, and speculate on their...

87

Numerical investigation of transient hydrothermal processes around intrusions: heat-transfer and fluid-  

E-Print Network (OSTI)

Numerical investigation of transient hydrothermal processes around intrusions: heat the intrusion. Keywords: Hydrothermal processes, numerical modelling, magmatic intrusion, permeability- depth around magmatic intrusions have been obtained through coupled hydrothermal numerical modelling that takes

Paris-Sud XI, Université de

88

Numerical models of caldera deformation: Effects of multiphase and multicomponent hydrothermal fluid flow  

E-Print Network (OSTI)

and poroelastic deformation using a range of realistic physical parameters and processes. Hydrothermal fluidNumerical models of caldera deformation: Effects of multiphase and multicomponent hydrothermal. Although hydrothermal fluids have been discussed as a possible deformation agent, very few quantitative

89

Hydrothermally grown nanostructured WO films and their electrochromic characteristics  

E-Print Network (OSTI)

Hydrothermally grown nanostructured WO 3 films and their electrochromic characteristics.1088/0022-3727/43/28/285501 Hydrothermally grown nanostructured WO3 films and their electrochromic characteristics Zhihui Jiao1 , Xiao Wei and their electrochromic characteristics. Plate-like monoclinic WO3 nanostructures were grown directly on fluorine

Demir, Hilmi Volkan

90

MICROBIAL AMMONIA OXIDATION IN DEEP-SEA HYDROTHERMAL PLUMES  

E-Print Network (OSTI)

MICROBIAL AMMONIA OXIDATION IN DEEP-SEA HYDROTHERMAL PLUMES A DISSERTATION SUBMITTED;ABSTRACT Autotrophic ammonia oxidation has been documented for the first time in deep- sea hydrothermal autotrophic ammonia oxidation at ~ 91 nM d-1 , and potentially produces de novo organic carbon at a rate (0

Luther, Douglas S.

91

Synthesis of a Se0 /calcite composite using hydrothermal1  

E-Print Network (OSTI)

1 Synthesis of a Se0 /calcite composite using hydrothermal1 carbonation of Ca(OH)2 coupled800141p #12;2 Abstract1 2 In this study, the hydrothermal carbonation of calcium hydroxide under high CO2 "crystalline elemental selenium" (carbonate matrix was constituted

Paris-Sud XI, Université de

92

Hydrothermal Activity and Travertine Deposits in Valles Caldera Paul Withers  

E-Print Network (OSTI)

Hydrothermal Activity and Travertine Deposits in Valles Caldera Paul Withers Valles Caldera for the Valles Caldera hydrothermal system [fig]. Some fluids escape in acid springs and mud pits (Sulphur mineral deposits as they cool, specifically travertine. Travertine is a freshwater, calcium carbonate

Withers, Paul

93

Experimental investigation of single carbon compounds under hydrothermal conditions  

E-Print Network (OSTI)

Experimental investigation of single carbon compounds under hydrothermal conditions Jeffrey S; accepted in revised form 8 September 2005 Abstract The speciation of carbon in subseafloor hydrothermal reactant during the abiotic synthesis of reduced carbon compounds via Fischer­Tropsch-type processes

Rhoads, James

94

A Serpentinite-Hosted Ecosystem: The Lost City Hydrothermal Field  

E-Print Network (OSTI)

A Serpentinite-Hosted Ecosystem: The Lost City Hydrothermal Field Deborah S. Kelley,1 * Jeffrey A. Baross,1 Roger E. Summons,7 Sean P. Sylva4 The serpentinite-hosted Lost City hydrothermal field is a remarkable submarine ecosystem in which geological, chemical, and biological processes are intimately

Gilli, Adrian

95

Hydrothermal plume dynamics on Europa: Implications for chaos formation  

E-Print Network (OSTI)

Hydrothermal plume dynamics on Europa: Implications for chaos formation Jason C. Goodman,1 Geoffrey December 2003; accepted 12 January 2004; published 20 March 2004. [1] Hydrothermal plumes may a liquid ocean to the base of its ice shell. This process has been implicated in the formation of chaos

Pierrehumbert, Raymond

96

Automated Planning for Hydrothermal Vent Prospecting Using AUVs  

E-Print Network (OSTI)

Automated Planning for Hydrothermal Vent Prospecting Using AUVs Zeyn A Saigol A thesis submitted of searching the ocean floor for hydrothermal vents, using autonomous under- water vehicles (AUVs decision process (POMDP), but with a very large state space (of the order of 10123 states). This size

Yao, Xin

97

Property:PotentialGeothermalHydrothermalGeneration | Open Energy  

Open Energy Info (EERE)

PotentialGeothermalHydrothermalGeneration PotentialGeothermalHydrothermalGeneration Jump to: navigation, search Property Name PotentialGeothermalHydrothermalGeneration Property Type Quantity Description The estimated potential energy generation from Geothermal Hydrothermal for a particular place. Use this type to express a quantity of energy. The default unit for energy on OpenEI is the Kilowatt hour (kWh), which is 3,600,000 Joules. http://en.wikipedia.org/wiki/Unit_of_energy It's possible types are Watt hours - 1000 Wh, Watt hour, Watthour Kilowatt hours - 1 kWh, Kilowatt hour, Kilowatthour Megawatt hours - 0.001 MWh, Megawatt hour, Megawatthour Gigawatt hours - 0.000001 GWh, Gigawatt hour, Gigawatthour Joules - 3600000 J, Joules, joules Pages using the property "PotentialGeothermalHydrothermalGeneration"

98

Relations Of Ammonium Minerals At Several Hydrothermal Systems In The  

Open Energy Info (EERE)

Relations Of Ammonium Minerals At Several Hydrothermal Systems In The Relations Of Ammonium Minerals At Several Hydrothermal Systems In The Western Us Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Relations Of Ammonium Minerals At Several Hydrothermal Systems In The Western Us Details Activities (5) Areas (1) Regions (0) Abstract: Ammonium bound to silicate and sulfate minerals has recently been located at several major hydrothermal systems in the western U.S. utilizing newly-discovered near-infrared spectral properties. Knowledge of the origin and mineralogic relations of ammonium minerals at known hydrothermal systems is critical for the proper interpretation of remote sensing data and for testing of possible links to mineralization. Submicroscopic analysis of ammonium minerals from two mercury- and gold-bearing

99

Fluid Inclusion Gas Compositions From An Active Magmatic-Hydrothermal  

Open Energy Info (EERE)

Fluid Inclusion Gas Compositions From An Active Magmatic-Hydrothermal Fluid Inclusion Gas Compositions From An Active Magmatic-Hydrothermal System- A Case Study Of The Geysers Geothermal Field, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Fluid Inclusion Gas Compositions From An Active Magmatic-Hydrothermal System- A Case Study Of The Geysers Geothermal Field, Usa Details Activities (1) Areas (1) Regions (0) Abstract: Hydrothermal alteration and the active vapor-dominated geothermal system at The Geysers, CA are related to a composite hypabyssal granitic pluton emplaced beneath the field 1.1 to 1.2 million years ago. Deep drill holes provide a complete transect across the thermal system and samples of the modern-day steam. The hydrothermal system was liquid-dominated prior to formation of the modern vapor-dominated regime at 0.25 to 0.28 Ma. Maximum

100

Property:IdentifiedHydrothermalPotential | Open Energy Information  

Open Energy Info (EERE)

IdentifiedHydrothermalPotential IdentifiedHydrothermalPotential Jump to: navigation, search Property Name IdentifiedHydrothermalPotential Property Type Quantity Description Conventional hydrothermal electricity generation potential from identified hydrothermal sites, as determined by the USGS 2008 Geothermal Resource Assessment (Williams et al, 2008). Use this property to express potential electric energy generation, such as Nameplate Capacity. The default unit is megawatts (MW). For spatial capacity, use property Volume. Acceptable units (and their conversions) are: 1 MW,MWe,megawatt,Megawatt,MegaWatt,MEGAWATT,megawatts,Megawatt,MegaWatts,MEGAWATT,MEGAWATTS 1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS

Note: This page contains sample records for the topic "hydrothermal gea development" 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

Property:UndiscoveredHydrothermalPotential | Open Energy Information  

Open Energy Info (EERE)

UndiscoveredHydrothermalPotential UndiscoveredHydrothermalPotential Jump to: navigation, search Property Name UndiscoveredHydrothermalPotential Property Type Quantity Description Estimated conventional hydrothermal electricity generation potential from undiscovered hydrothermal sites, as determined by the USGS 2008 Geothermal Resource Assessment (Williams et al, 2008). Use this property to express potential electric energy generation, such as Nameplate Capacity. The default unit is megawatts (MW). For spatial capacity, use property Volume. Acceptable units (and their conversions) are: 1 MW,MWe,megawatt,Megawatt,MegaWatt,MEGAWATT,megawatts,Megawatt,MegaWatts,MEGAWATT,MEGAWATTS 1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS

102

Hydrothermal reactions of fly ash. Final report  

SciTech Connect

The emphasis of the work done has been to determine the reactivities of two ashes believed to be representative of those generated. A bituminous ash and a lignitic ash have been investigated. The reactions of these ashes undergo when subjected to mild hydrothermal conditions were explored. The nature of the reactions which the ashes undergo when alkaline activators, calcium hydroxide and calcium sulfate are present was also investigated. It was determined that calcium silicate hydrate, calcium aluminate hydrate, and the calcium sulfoaluminate hydrate ettringite form under these conditions. It appears 3CaO{center_dot}Al{sub 2}O{sub 3}{center_dot}3CaSO{sub 4}{center_dot}32H{sub 2}O (ettringite) formation needs to be considered in ashes which contain significant amounts of sulfate. Therefore the stability region for ettringite was established. It was also determined that calcium silicate hydrate, exhibiting a high internal surface area, will readily form with hydrothermal treatment between 50{degrees} and 100{degrees}C. This phase is likely to have a significant capacity to take up heavy metals and oxyanions and this ability is being explored.

Brown, P.W.

1995-12-31T23:59:59.000Z

103

Correlation of hydrothermal sericite composition with permeability and  

Open Energy Info (EERE)

Correlation of hydrothermal sericite composition with permeability and Correlation of hydrothermal sericite composition with permeability and temperature, Coso Hot Springs geothermal field, Inyo County, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Correlation of hydrothermal sericite composition with permeability and temperature, Coso Hot Springs geothermal field, Inyo County, California Details Activities (1) Areas (1) Regions (0) Abstract: Petrographic and geochemical analyses of cuttings from six wells in the Coso Hot Springs geothermal field show a systematic variation in the occurrence, texture, and composition of sericite that can be correlated with high permeability production zones and temperature. The wells studied intersect rhyolitic dikes and sills in the fractured granitic and dioritic

104

Development and Validation of an Advanced Stimulation Prediction...  

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

development of the Stimulation Prediction Model: * Three-dimensional hydro-thermal fracture propagation modeled using the 3D Displacement Discontinuity (DD) method and adaptive...

105

Heat extraction in fractured hydrothermal reservoirs: Final report  

SciTech Connect

The main objective of the Heat Extraction Project has been the development of means to estimate the thermal behavior of geothermal fluids from fractured hydrothermal resources based on production of mixed reservoir fluids from heat sweep by reinjected brine and resource fluid cooled by drawdown and infiltrating waters. Several reports and publications, listed in the concluding section of this report, resulted from the application of the SGP heat sweep model to achieve this objective. The Heat Extraction Project made major advances in the development of the 1-D Heat Sweep Model and its application in geothermal fields in several countries. Heat sweep joint studies are underway for reinjection evaluation at the Los Azufres, Los Humeros, and La Primavera fields in Mexico, for the 500 t/h reinjection test for the redevelopment program at Wairakei, New Zealand, for two hot water supply recirculation systems to be developed in the USSR, and for the phase 2 test at the Hot Dry Rock project at Fenton Hill, New Mexico. Advances were also made in the cooperative studies with CFE at Los Azufres on the evaluation of the effects of early operation of small wellhead generators on the reservoirs of potentially large geothermal fields. 9 refs., 5 figs.

Kruger, P.

1988-06-30T23:59:59.000Z

106

Deposition of WO3 on Al2O3 via a microwave hydrothermal method to prepare highly dispersed W/Al2O3 hydrodesulfurization catalyst  

Science Journals Connector (OSTI)

Abstract A microwave hydrothermal method was developed to deposit WO3 on Al2O3 for rapidly preparing W/Al2O3 hydrodesulfurization (HDS) catalysts with both high tungsten dispersion and weak tungstenalumina interaction. The catalysts were characterized by XRD, XPS, N2 adsorption, H2-TPR, NH3-TPD and HRTEM; their activity was tested by HDS of dibenzothiophene. Compared to the previous hydrothermal deposition method, the microwave hydrothermal method can further increase the dispersion of tungsten and attain the similar weak tungstenalumina interaction, leading to the shorter and similar stacked WS2 and hence higher HDS activity, whereas the hydrothermal period is dramatically reduced from 12h to 15min. Moreover, this method can highly disperse more tungsten on alumina than the hydrothermal deposition and impregnation methods. It is attributed to the rapid nucleation and inhibited growth of WO3, and the enhanced mobility induced by microwave hydrothermal conditions. The significance of this method lies in its simplicity and efficiency for preparing tungsten-based catalysts with superior HDS activity.

Hao Wang; Yan Wu; Zhenwei Liu; Li He; Zhenyu Yao; Wanying Zhao

2014-01-01T23:59:59.000Z

107

E-Print Network 3.0 - aspects experimental developments Sample...  

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

To develop the ability to read and critically evaluate published papers dealing... with hydrothermal geochemistry; 3) To develop the ability to present your evaluation and defend...

108

GEA Honors Geothermal Leaders | Department of Energy  

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

produce power and cascade the remaining energy to support an existing geothermal district heating system and future greenhouse and aquaculture businesses. If successful, Canby...

109

Comparison Of Hydrothermal Alteration Of Carboniferous Carbonate And  

Open Energy Info (EERE)

Hydrothermal Alteration Of Carboniferous Carbonate And Hydrothermal Alteration Of Carboniferous Carbonate And Siliclastic Rocks In The Valles Caldera With Outcrops From The Socorro Caldera, New Mexico Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Comparison Of Hydrothermal Alteration Of Carboniferous Carbonate And Siliclastic Rocks In The Valles Caldera With Outcrops From The Socorro Caldera, New Mexico Details Activities (3) Areas (2) Regions (0) Abstract: Continental Scientific Drilling Program (CSDP) drill hole VC-2B (total depth 1761.7 m (5780 ft); maximum temperature 295°C) was continuously cored through the Sulphur Springs hydrothermal system in the western ring-fracture zone of the 1.14 Ma Valles caldera. Among other units, the hole penetrated 760.2 m (2494.1 ft) of Paleozoic carbonate and

110

Oxygen And Carbon Isotope Ratios Of Hydrothermal Minerals From Yellowstone  

Open Energy Info (EERE)

Oxygen And Carbon Isotope Ratios Of Hydrothermal Minerals From Yellowstone Oxygen And Carbon Isotope Ratios Of Hydrothermal Minerals From Yellowstone Drill Cores Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Oxygen And Carbon Isotope Ratios Of Hydrothermal Minerals From Yellowstone Drill Cores Details Activities (3) Areas (1) Regions (0) Abstract: Oxygen and carbon isotope ratios were measured for hydrothermal minerals (silica, clay and calcite) from fractures and vugs in altered rhyolite, located between 28 and 129 m below surface (in situ temperatures ranging from 81 to 199°C) in Yellowstone drill holes. The purpose of this study was to investigate the mechanism of formation of these minerals. The Δ18O values of the thirty-two analyzed silica samples (quartz, chalcedony, α-cristobalite, and β-cristobalite) range from -7.5 to +2.8‰. About one

111

Property:PotentialGeothermalHydrothermalCapacity | Open Energy Information  

Open Energy Info (EERE)

PotentialGeothermalHydrothermalCapacity PotentialGeothermalHydrothermalCapacity Jump to: navigation, search Property Name PotentialGeothermalHydrothermalCapacity Property Type Quantity Description The nameplate capacity technical potential from Geothermal Hydrothermal for a particular place. Use this property to express potential electric energy generation, such as Nameplate Capacity. The default unit is megawatts (MW). For spatial capacity, use property Volume. Acceptable units (and their conversions) are: 1 MW,MWe,megawatt,Megawatt,MegaWatt,MEGAWATT,megawatts,Megawatt,MegaWatts,MEGAWATT,MEGAWATTS 1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS 1000000000 mW,milliwatt,milliwatts,MILLIWATT,MILLIWATTS 0.001 GW,gigawatt,gigawatts,Gigawatt,Gigawatts,GigaWatt,GigaWatts,GIGAWATT,GIGAWATTS

112

Chemical and isotopic characteristics of the coso east flank hydrothermal  

Open Energy Info (EERE)

isotopic characteristics of the coso east flank hydrothermal isotopic characteristics of the coso east flank hydrothermal fluids: implications for the location and nature of the heat source Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Chemical and isotopic characteristics of the coso east flank hydrothermal fluids: implications for the location and nature of the heat source Details Activities (1) Areas (1) Regions (0) Abstract: Fluids have been sampled from 9 wells and 2 fumaroles from the East Flank of the Coso hydrothermal system with a view to identifying, if possible, the location and characteristics of the heat source inflows into this portion of the geothermal field. Preliminary results show that there has been extensive vapor loss in the system, most probably in response to

113

Base hydrolysis and hydrothermal processing of PBX-9404  

SciTech Connect

Base hydrolysis in combination with hydrothermal processing has been proposed as an environmentally acceptable alternative to open burning/open detonation for degradation and destruction of high explosives. In this report, the authors examine gaseous and aqueous products of base hydrolysis of the HMX-based plastic bonded explosive, PBX-9404. They also examined products from the subsequent hydrothermal treatment of the base hydrolysate. The gases produced from hydrolysis of PBX-9404 are ammonia, nitrous oxide, and nitrogen. Major aqueous products are sodium formate, acetate, nitrate, and nitrite, but not all carbon products have been identified. Hydrothermal processing of base hydrolysate destroyed up to 98% of the organic carbon in solution, and higher destruction efficiencies are possible. Major gas products detected from hydrothermal processing were nitrogen and nitrous oxide.

Flesner, R.L.; Spontarelli, T.; Dell`Orco, P.C.; Sanchez, J.A.

1994-11-01T23:59:59.000Z

114

The mild hydrothermal synthesis of hydrogrossular from coal ash  

Science Journals Connector (OSTI)

In this study, an attempt was made to synthesize hydrogrossular, a group of garnet minerals, under hydrothermal conditions at temperatures below 180C, using coal ash, which is the solid waste from thermal...

Satoru Fujita; Kenzi Suzuki; Yasuo Shibasaki

2002-04-01T23:59:59.000Z

115

Hydrothermal Syntheses of Colloidal Carbon Spheres from Cyclodextrins...  

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

from aqueous alpha-, beta-, and gamma-cyclodextrin (CD) solutions in closed systems under hydrothermal conditions at 160 oC. Both liquid and solid-state 13C NMR spectra taken for...

116

Seismic Evidence For A Hydrothermal Layer Above The Solid Roof...  

Open Energy Info (EERE)

roof is overlain by a 150-200-m-thick low-velocity zone that may correspond to a fracture zone that hosts the hydrothermal circulation, and the roof itself may be the...

117

Whole Algae Hydrothermal Liquefaction: 2014 State of Technology  

SciTech Connect

This report describes the base case yields and operating conditions for converting whole microalgae via hydrothermal liquefaction and upgrading to liquid fuels. This serves as the basis against which future technical improvements will be measured.

Jones, Susanne B.; Zhu, Yunhua; Snowden-Swan, Lesley J.; Anderson, Daniel; Hallen, Richard T.; Schmidt, Andrew J.; Albrecht, Karl O.; Elliott, Douglas C.

2014-07-30T23:59:59.000Z

118

Geochemistry and stable isotope constraints on high-temperature activity from sediment cores of the Saldanha hydrothermal field  

E-Print Network (OSTI)

hydrothermal processes occur, including reactions of the hydrothermal fluids with mafic and ultramafic rocks of seafloor hydrothermal processes. The focus on these ultramafic-hosted hydrothermal systems has increased, i of the Saldanha hydrothermal field Á.S. Dias a, ,1 , G.L. Früh-Green b,1 , S.M. Bernasconi c,1 , F.J.A.S. Barriga

Gilli, Adrian

119

The Influence of Hydrothermal Temperature on CaO-based Adsorbents Synthesized by Sol-Gel-Hydrothermal Method  

Science Journals Connector (OSTI)

Abstract To capture carbon dioxide (CO2), a major green house gas from flue gas, several kinds of adsorbents have been synthesized, characterized and tested. In this study, CaO-based adsorbents were synthesized via sol-gel-hydrothermal method and different hydrothermal temperatures (100, 120, 140 and 160C) have been investigated in order to verify their influence on the CaO-based adsorbents. Experimental results showed that the Ca(OH)2 adsorbent with a mixture of CaCO3 synthesized at 120C hydrothermal treatment possesses high CO2 adsorption capacity (0.52 g-CO2/g-sorbent) and at 160C hydrothermal treatment, CaC2O4.H2O adsorbent was observed and its CO2 adsorption capacity was 0.46 g-CO2/g-sorbent for first carbonation/calcination cycle.

Nwe Ni Hlaing; Radzali Othman; Hirofumi Hinode; Winarto Kurniawan; Aye Aye Thant; Abdul Rahman Mohamed; Chris Salim; Srimala Sreekantan

2014-01-01T23:59:59.000Z

120

Comparison of emerging metaheuristic algorithms for optimal hydrothermal system operation  

Science Journals Connector (OSTI)

Abstract Optimal hydrothermal system operation (OHSO) is one of the complex and hard-to-solve problems in power system field due to its nonlinear, dynamic, stochastic, non-separable and non-convex nature. Traditionally, this problem has been solved through classical optimization algorithms, which require some approximations to tackle a more tractable variant of the original problem formulation. Metaheuristic optimization has undergone a significant development in recent years, thus, there is a variety of tools with different conceptual differences, which offer a great potential for solving OHSO without extensive simplifications. This paper provides a comparative study on the application of six emerging metaheuristic algorithms to OHSO, namely, the Comprehensive Learning Particle Swarm Optimizer (CLPSO), Genetic algorithm with Multi-Parent Crossover (GA-MPC), Differential Evolution with Adaptive Crossover Operator (DE-ACO), Covariance Matrix Adaptation Evolution Strategy (CMA-ES), Linearized Biogeography-based Optimization (LBBO), and the Hybrid Median-Variance Mapping Optimization (MVMO-SH). Since these tools have been successfully applied to other hard-to-solve optimization problems, the goal is to ascertain their effectiveness when adapted to tackle the OHSO problem by evaluating their performance in terms of convergence speed, achieved optimum solutions, and computing effort. Numerical experiments, performed on a test system composed by four cascaded hydro plants and an equivalent thermal plant, highlight the relevance of the adopted global search mechanisms, especially for LBBO and MVMO-SH. A nonlinear programming (NLP) algorithm is used as reference to validate the results.

Martha P. Camargo; Jos L. Rueda; Istvn Erlich; Osvaldo A

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" 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

Formation of viable nuclei and particle growth in hydrothermal processing of silicon dioxide wafers: A modeling study of entrance effects  

SciTech Connect

A major problem that besets rapid hydrothermal processing of silicon dioxide wafers is the formation of particles. In this report we have used The Becker, Doering, Zeldovich theory of homogeneous condensation of viable nuclei to study particle formation in a hydrothermal processing chamber. We have further utilized a diffusive growth model that allows these nuclei to develop into larger particles. In addition, we have developed a model to partially dissolve the walls of the quartz chamber into the steam flowing by. The interplay between homogeneous nucleation and inhomogeneous nucleation is brought out via a dimensionless number that is the ratio of the timescales of these two phenomena. An analytic model was developed to prove in consonance with numerical results that unless the incoming stream is itself supersaturated, there will be no nucleation near the entrance.

Chitanvis, S.M.

1994-08-01T23:59:59.000Z

122

Hydrothermal calcite in the Elephant Moraine  

SciTech Connect

In the course of geologic mapping of the Elephant Moraine on the east antarctic ice sheet, Faure and Taylor (1985) collected several specimens of black botryoidal calcite, composed of radiating acicular crystals that resemble stromatolites. Calcite from this and other specimens is significantly enriched in strontium-87 (the strontium-87/strontium-86 ratio equals 0.71417 +/- 0.00002), carbon-12 (delta carbon-13 equals -22.9 parts per thousand, PDB standard) and oxygen-16 (delta oxygen-18 equals -21.1 parts per thousand, standard mean ocean water) compared with calcite of marine origin. The enrichment in carbon-12 is similar to that of calcite associated with coal in the Allan Hills. The enrichment in oxygen-16 indicates that the calcite from the Elephant Moraine could only have precipitated in isotopic equilibrium with glacial melt water. Therefore, the temperature at which the black calcite precipitated from water of that isotope composition was about 85/sup 0/C. A temperature of this magnitude implies that the black calcite formed as a result of volcanic activity under the east antarctic ice sheet. The enrichment of the black calcite in carbon-12 suggests that it formed in part from carbon dioxide derived from the coal seams of the Weller Formation in the Beacon Supergroup. The isotopic composition of strontium in the black calcite is similar to that of carbonate beds and concretions in the Beacon rocks of southern Victoria Land. A volcanic-hydrothermal origin is also consistent with the very low total organic carbon content of 0.15% in the calcite.

Faure, G.; Taylor, K.S.; Jones, L.M.

1986-01-01T23:59:59.000Z

123

Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands,  

Open Energy Info (EERE)

Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands, Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands, Italy) Revealed By Geophysical And Geochemical Approaches- Implications For General Fluid Flow Models On Volcanoes Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands, Italy) Revealed By Geophysical And Geochemical Approaches- Implications For General Fluid Flow Models On Volcanoes Details Activities (0) Areas (0) Regions (0) Abstract: On March 15th 2007 a paroxysmal explosion occurred at the Stromboli volcano. This event generated a large amount of products, mostly lithic blocks, some of which impacted the ground as far as down to 200 m a.s.l., about 1.5 km far away from the active vents. Two days after the

124

Hydrothermal Heat Discharge In The Cascade Range, Northwestern United  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Hydrothermal Heat Discharge In The Cascade Range, Northwestern United States Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Hydrothermal Heat Discharge In The Cascade Range, Northwestern United States Details Activities (3) Areas (1) Regions (0) Abstract: Hydrothermal heat discharge in the Cascade Range includes the heat discharged by thermal springs, by "slightly thermal" springs that are only a few degrees warmer than ambient temperature, and by fumaroles. Thermal-spring heat discharge is calculated on the basis of chloride-flux measurements and geothermometer temperatures and totals ~ 240 MW in the U.S. part of the Cascade Range, excluding the transient post-1980 discharge

125

A Helium Isotope Perspective On The Dixie Valley, Nevada, Hydrothermal  

Open Energy Info (EERE)

Helium Isotope Perspective On The Dixie Valley, Nevada, Hydrothermal Helium Isotope Perspective On The Dixie Valley, Nevada, Hydrothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Helium Isotope Perspective On The Dixie Valley, Nevada, Hydrothermal System Details Activities (3) Areas (1) Regions (0) Abstract: Fluids from springs, fumaroles, and wells throughout Dixie Valley, NV were analyzed for noble gas abundances and isotopic compositions. The helium isotopic compositions of fluids produced from the Dixie Valley geothermal field range from 0.70 to 0.76 Ra, are among the highest values in the valley, and indicate that similar to 7.5% of the total helium is derived from the mantle. A lack of recent volcanics or other potential sources requires flow of mantle-derived helium up along the

126

Spatial And Temporal Geochemical Trends In The Hydrothermal System Of  

Open Energy Info (EERE)

Spatial And Temporal Geochemical Trends In The Hydrothermal System Of Spatial And Temporal Geochemical Trends In The Hydrothermal System Of Yellowstone National Park- Inferences From River Solute Fluxes Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Spatial And Temporal Geochemical Trends In The Hydrothermal System Of Yellowstone National Park- Inferences From River Solute Fluxes Details Activities (2) Areas (1) Regions (0) Abstract: We present and analyze a chemical dataset that includes the concentrations and fluxes of HCO3-, SO42-, Cl-, and F- in the major rivers draining Yellowstone National Park (YNP) for the 2002-2004 water years (1 October 2001 - 30 September 2004). The total (molar) flux in all rivers decreases in the following order, HCO3- > Cl- > SO42- > F-, but each river is characterized by a distinct chemical composition, implying large-scale

127

Volatiles in hydrothermal fluids- A mass spectrometric study of fluid  

Open Energy Info (EERE)

Volatiles in hydrothermal fluids- A mass spectrometric study of fluid Volatiles in hydrothermal fluids- A mass spectrometric study of fluid inclusions from active geothermal systems Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Volatiles in hydrothermal fluids- A mass spectrometric study of fluid inclusions from active geothermal systems Details Activities (4) Areas (4) Regions (0) Abstract: A system for analysis of inclusion gas contents based upon quadrupole mass spectrometry has been designed, assembled and tested during the first 7 months of funding. The system is currently being tested and calibrated using inclusions with known gas contents from active geothermal systems. Analyses are in progress on inclusions from the Salton Sea, Valles Caldera, Geysers, and Coso geothermal systems. Author(s): Mckibben, M. A.

128

Are spatial variations in the diets of hydrothermal fauna linked to local environmental conditions?  

E-Print Network (OSTI)

are considered to be the main energy-acquisition path- ways of carbon fixation in hydrothermal systems (Conway etAre spatial variations in the diets of hydrothermal fauna linked to local environmental conditions conditions Hydrothermal springs Food webs Mid-Atlantic Ridge Lucky Strike (37117.290 N 32116.450 W) a b s t r

Long, Bernard

129

Microbemetal interactions in marine hydrothermal environments James F Holden and Michael W W Adams  

E-Print Network (OSTI)

the scope of carbon cycling in hydrothermal environments. The advent of genome sequences and new molecularMicrobe­metal interactions in marine hydrothermal environments James F Holden and Michael W W Adams? Marine hydrothermal microorganisms respond rapidly to changes in the concentrations and availability

Holden, James F.

130

Sulfur in peridotites and gabbros at Lost City (30N, MAR): Implications for hydrothermal alteration  

E-Print Network (OSTI)

minerals in samples from near the base of hydrothermal carbonate towers at Lost City show d34 S valuesSulfur in peridotites and gabbros at Lost City (30°N, MAR): Implications for hydrothermal of serpentinized peridotites and gabbros beneath the Lost City Hydrothermal Field at the southern face

Gilli, Adrian

131

Seaoor hydrothermal alteration at an Archaean mid-ocean ridge K. KITAJIMA,1  

E-Print Network (OSTI)

-to-boiling point curve for a ¯uid. The carbonation due to high-XCO2 hydrothermal ¯uids occurred near the ridgeSea¯oor hydrothermal alteration at an Archaean mid-ocean ridge K. KITAJIMA,1 S. MARUYAMA,1 S Sciences, Stanford University, Stanford, CA 94305, USA ABSTRACT A hydrothermally metamorphosed

Utsunomiya, Satoshi

132

Cite this: CrystEngComm, 2013, 15, Calcite formation by hydrothermal carbonation of  

E-Print Network (OSTI)

Cite this: CrystEngComm, 2013, 15, 3392 Calcite formation by hydrothermal carbonation by hydrothermal carbonation of calcium hydroxide by a simulation strategy, in which both the chemical evolution calcite formation by hydrothermal carbonation of portlandite. Calcite is an important ubiquitous mineral

Montes-Hernandez, German

133

Submeter bathymetric mapping of volcanic and hydrothermal features on the East Pacific Rise crest at 9500  

E-Print Network (OSTI)

of bathymetric changes associated with active volcanic, hydrothermal and tectonic processes. Components: 15Submeter bathymetric mapping of volcanic and hydrothermal features on the East Pacific Rise crest to produce submeter resolution bathymetric maps of five hydrothermal vent areas at the East Pacific Rise (EPR

Whitcomb, Louis L.

134

Controls on Martian hydrothermal systems: Application to valley network and magnetic anomaly formation  

E-Print Network (OSTI)

circulation can quantify limits to the role of hydrothermal activity in Martian crustal processes. We present the viability of hydrothermal circulation as the primary process responsible for the broad spatial correlationControls on Martian hydrothermal systems: Application to valley network and magnetic anomaly

Harrison, Keith

135

Ultrafast Microwave Hydrothermal Synthesis of BiFeO3 Nanoplates Riad Nechache,  

E-Print Network (OSTI)

hydrothermal processes while requiring significantly less time and energy. In addition, we show that microwaveUltrafast Microwave Hydrothermal Synthesis of BiFeO3 Nanoplates Shun Li, Riad Nechache,§ Ivan and very rapid (1­2 min) microwave-assisted hydrothermal approach. We show that the microwave treatment

136

Geological Society of America Magmatic-hydrothermal leaching and origin of late to post-tectonic  

E-Print Network (OSTI)

, Ottawa, Ontario K1A 0E8, Canada ABSTRACT Magmatic-hydrothermal processes produced significant metasomatic near the margins of the granite plu- ton. Later low-temperature hydrothermal processes mobilized silica High-temperature hydrothermal processes have long been recognized within the Adirondack Highlands

Soja, Constance M.

137

Physical response of mid-ocean ridge hydrothermal systems to local earthquakes  

E-Print Network (OSTI)

: Heat flow (benthic) and hydrothermal processes; 3035 Marine Geology and Geophysics: Midocean ridge processes; 8135 Tectonophysics: Hydrothermal systems (8424). Received 23 January 2004; Revised 9 July 2004Physical response of mid-ocean ridge hydrothermal systems to local earthquakes William S. D

Wilcock, William

138

Hydrothermal synthesis, off-axis electron holography and magnetic properties of Fe3O4 nanoparticles  

E-Print Network (OSTI)

-sized Fe3O4 have been prepared by various methods such as sol­ gel processing, hydrothermal synthesisHydrothermal synthesis, off-axis electron holography and magnetic properties of Fe3O4 nanoparticles Jülich, Germany. Abstract. The hydrothermal synthesis of Fe3O4 nanoparticles (NPs) (

Dunin-Borkowski, Rafal E.

139

STUDY OF THE EFFECT OF HYDROTHERMAL PROCESS CONDITIONS ON PASTA QUALITY  

E-Print Network (OSTI)

STUDY OF THE EFFECT OF HYDROTHERMAL PROCESS CONDITIONS ON PASTA QUALITY Authors: Z. Maache Science 41, 3 (2005) 267-275" DOI : 10.1016/j.jcs.2004.10.008 #12;Abstract. Effect of hydrothermal. The Instantaneous Controlled Pressure Drop (DIC) treatment is defined as a hydrothermal treatment that involves

Paris-Sud XI, Université de

140

Permeability changes due to mineral diagenesis in fractured crust: implications for hydrothermal circulation at  

E-Print Network (OSTI)

The hydrothermal processes at ridge crests have been extensively studied during the last two decades. NeverthelessPermeability changes due to mineral diagenesis in fractured crust: implications for hydrothermal, the reasons why hydrothermal fields are only occasionally found along some ridge segments remain a matter

Manga, Michael

Note: This page contains sample records for the topic "hydrothermal gea development" 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

Integration of hydrothermal-energy economics: related quantitative studies  

SciTech Connect

A comparison of ten models for computing the cost of hydrothermal energy is presented. This comparison involved a detailed examination of a number of technical and economic parameters of the various quantitative models with the objective of identifying the most important parameters in the context of accurate estimates of cost of hydrothermal energy. Important features of various models, such as focus of study, applications, marked sectors covered, methodology, input data requirements, and output are compared in the document. A detailed sensitivity analysis of all the important engineering and economic parameters is carried out to determine the effect of non-consideration of individual parameters.

Not Available

1982-08-01T23:59:59.000Z

142

Hydrothermal Dolomites in the Early Albian (Cretaceous) Platform Carbonates  

E-Print Network (OSTI)

Hydrothermal Dolomites in the Early Albian (Cretaceous) Platform Carbonates (NW Spain): Nature carbonates de la plate-forme albienne précoce (Crétacé; NO de l'Espagne): nature et origine des dolomies et trouvent dans les carbonates albiens, déposés dans le bassin Basque-Cantabrique suite à une subsidence

Paris-Sud XI, Université de

143

The Ranero Hydrothermal Dolomites (Albian, Karrantza Valley, Northwest Spain)  

E-Print Network (OSTI)

The Ranero Hydrothermal Dolomites (Albian, Karrantza Valley, Northwest Spain): Implications Recherche Développement, Carbonate Sedimentology Group, avenue Larribau s/n, 64018 Pau Cedex - France e'Espagne) sont présentées dans cette étude. Les corps dolomitiques sont encaissés dans des carbonates de

Paris-Sud XI, Université de

144

Hydro-Thermal Scheduling (HTS) 1.0 Introduction  

E-Print Network (OSTI)

1 Hydro-Thermal Scheduling (HTS) 1.0 Introduction From an overall systems view, the single most, relative to that of thermal plants, are very small. There are three basic types of hydroelectric plants;2 Pump-storage This kind of hydro plant is a specialized reservoir-type plant which has capability to act

McCalley, James D.

145

A facile hydrothermal route to the large-scale synthesis of CoWO4 nanorods Liang Zhen a,, Wen-Shou Wang a  

E-Print Network (OSTI)

by a hydrothermal method using only CoCl2 and Na2WO4 as reaction reagents and distilled water as solvents- dures. Recently, significant efforts have been devoted to develop green method that take into account no harmful surfactants, templates or solvents are used. 2. Experimental In a typical process, 25 ml CoCl2

Qin, Lu-Chang

146

Los Azufres Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

(0) 10 References Area Overview Geothermal Area Profile Location: Michoaciin, Mexico Exploration Region: Transmexican Volcanic Belt GEA Development Phase: Coordinates:...

147

A direct steam heat option for hydrothermal treatment of municipal solid waste  

SciTech Connect

A conceptual process for producing a gasifiable slurry from raw municipal solid waste (MSW) using direct steam heating is outlined. The process is based on the hydrothermal decomposition of the organic matter in the MSW, which requires the MSW to be heated to 300-350{degrees}C in the presence of water. A process model is developed and it is shown, based on preliminary estimates of the hydrothermal reaction stoichiometry, that a process using multiple pressure vessels, which allows recovery of waste heat, results in a process capable of producing a product slurry having a 40 wt % solids content with no waste water emissions. Results for a variety of process options and process parameters are presented. It is shown that the addition of auxiliary feedstock to the gasifier, along with the MSW derived slurry, results in more efficient gasification. It is estimated that 2.6 kmol/s of hydrogen can be produced from 30 kg/s (2600 tonne/day) of MSW and 16 kg/s of heavy oil. Without the additional feedstock, heavy oil in this case, only 0.49 kmol/s of hydrogen would be produced.

Thorsness, C.B.

1995-04-12T23:59:59.000Z

148

Geothermal Energy Association Honors NREL's Dr. Bharathan for Work in Condenser Technology  

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

The Geothermal Energy Association (GEA) recently announced the finalists for the GEA Honors, which recognizes companies and individuals that have made significant contributions during the past year to advancing technology, spurring economic development or protecting the environment.

149

Effect of reductant and PVP on morphology and magnetic property of ultrafine Ni powders prepared via hydrothermal route  

SciTech Connect

Graphical abstract: The ultrafine Ni powders with the shapes including sphere, pearl-string, leaf, fish-bone, hexagonal sheet and silknet were prepared through one-step hydrothermal reduction using different reductants. Their saturation magnetization, remanent magnetization and coercivity sequentially increase, and the coercivity of hexagonal sheet-like Ni powders increases by 25% compared with the Ni bulk counterpart. - Highlights: The ultrafine Ni powders with various shapes of sphere, fish-bone, hexagonal sheet, etc. Facile and one-step hydrothermal reduction using three reductants and PVP additive was developed. Magnetic properties of the ultrafine Ni powders with different shapes were measured. Compared with bulk Ni material, coercivity of hexagonal sheet Ni increases by 25%. The formation mechanism of the shapes was suggested. - Abstract: The ultrafine nickel particles with different shapes including sphere, pearl-string, leaf, fish-bone, hexagonal sheet and silknet were prepared through one-step hydrothermal reduction using hydrazine hydrate, sodium hypophosphite and ethylene glycol as reductants, polyvinylpyrrolidone as structure-directing agent. It has been verified with the characterization of X-ray powder diffraction and transmission/scanning electronic microscopy that as-prepared products belong to face-centered cubic structure of nickel microcrystals with high purity and fine dispersity. The magnetic hysteresis loops measured at room temperature reveal that the values of saturation magnetization, remanent magnetization and coercivity rise sequentially from silknet, sphere to hexagonal sheet. In comparison with nickel bulk counterpart, the coercivity of the hexagonal sheet nickel powders increases by 25%.

Zhang, Jun, E-mail: j-zhang@126.com; Wang, Xiucai; Li, Lili; Li, Chengxuan; Peng, Shuge

2013-10-15T23:59:59.000Z

150

Hydrothermal alteration mineral mapping using hyperspectral imagery in  

Open Energy Info (EERE)

alteration mineral mapping using hyperspectral imagery in alteration mineral mapping using hyperspectral imagery in Dixie Valley, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Hydrothermal alteration mineral mapping using hyperspectral imagery in Dixie Valley, Nevada Abstract Hyperspectral (HyMap) data was used to map the location ofoutcrops of high temperature, hydrothermally alterated minerals(including alunite, pyrophyllite, and hematite) along a 15 kmswath of the eastern front of the Stillwater Mountain Range inDixie Valley, Nevada. Analysis of this data set reveals that severaloutcrops of these altered minerals exist in the area, and thatone outcrop, roughly 1 square kilometer in area, shows abundanthigh temperature alteration. Structural analysis of the alteredregion using a

151

Lectures on geochemical interpretation of hydrothermal waters | Open Energy  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Lectures on geochemical interpretation of hydrothermal waters Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Lectures on geochemical interpretation of hydrothermal waters Abstract The alkali carbonates, Na, K, and Li, are relatively soluble at all temperatures and generally precipitate only where there is extreme evapora- tion. In contrast, the alkaline earth carbonates. Ca. Ht, Sr, and Ba, are moderately to sparingly soluble and commonly precipitate in bydrothecmal systems. Calcite is by far the most abundant and important carbonate found

152

Why Sequence Thermoacidophiles of deep-sea hydrothermal vents?  

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

Thermoacidophiles of Thermoacidophiles of deep-sea hydrothermal vents? Bacteria that live in hydrothermal vents on land and deep underwater need to be able to tolerate high temperatures and harsh, nutrient-poor environments with high concentrations of metals. As a result of living in such environments, however, these bacteria have enzymes that are stable at high temperatures, which could be useful for producing alternative fuels. Thermoacidophiles Photo: University of Delaware Aquificales bacteria are often found in thermal streams and associated with sulfide precipitation. Sequencing some of these bacterial genomes -- specifically, Thermocrinis ruber, S. rodmanii and S. kristjansonnii -- could provide researchers with so-called "anchor genomes" that would be applied in turn to studies already being done on microbial communities in

153

Mapping Hydrothermal Upwelling and Outflow Zones: Preliminary Results from  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Mapping Hydrothermal Upwelling and Outflow Zones: Preliminary Results from Two-Meter Temperature Data and Geologic Analysis at Lee Allen Springs and Salt Wells Basin Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Mapping Hydrothermal Upwelling and Outflow Zones: Preliminary Results from Two-Meter Temperature Data and Geologic Analysis at Lee Allen Springs and Salt Wells Basin Abstract Two-meter temperature surveys have been conducted at Salt Wells Basin and Lee-Allen Springs geothermal areas with the objective of distinguishing and

154

Hydrothermal Processing of Macroalgal Feedstocks in Continuous-Flow Reactors  

SciTech Connect

Wet macroalgal slurries can be converted into a biocrude by hydrothermal liquefaction (HTL). High levels of carbon conversion to gravity-separable oil product were accomplished at relatively low temperature (350 ?C) in a pressurized (sub-critical liquid water) environment (20 MPa). As opposed to earlier work in batch reactors reported by others, direct oil recovery was achieved without the use of a solvent and biomass trace mineral components were removed by processing steps so that they did not cause processing difficulties. In addition, catalytic hydrothermal gasification was effectively applied for HTL byproduct water cleanup and fuel gas production from water soluble organics. As a result, high conversion of macroalgae to liquid and gas fuel products was found with low levels of organic contamination in byproduct water. Both process steps were accomplished in continuous-flow reactor systems such that design data for process scale-up was generated.

Elliott, Douglas C.; Hart, Todd R.; Neuenschwander, Gary G.; Rotness, Leslie J.; Roesijadi, Guritno; Zacher, Alan H.; Magnuson, Jon K.

2014-02-18T23:59:59.000Z

155

Hydrothermal system in Southern Grass Valley, Pershing County, Nevada  

SciTech Connect

Southern Grass Valley is a fairly typical extensional basin in the Basin and Range province. Leach Hot Springs, in the southern part of the valley, represents the discharge end of an active hydrothermal flow system with an estimated deep aquifer temperature of 163 to 176/sup 0/C. Results of geologic, hydrologic, geophysical and geochemical investigations are discussed in an attempt to construct an internally consistent model of the system.

Welch, A.H.; Sorey, M.L.; Olmsted, F.H.

1981-01-01T23:59:59.000Z

156

Catalytic Hydrothermal Conversion of Triglycerides to Non-ester Biofuels  

Science Journals Connector (OSTI)

Catalytic Hydrothermal Conversion of Triglycerides to Non-ester Biofuels ... Results derived from soybean oil, jatropha oil, and tung oil show that certain biofuel fractions met JP-8 specifications and Navy distillate specifications. ... Therefore, tung-oil-derived CH biofuel will have added value as a blend stock for existing FT jet fuels and emerging biofuels such as those produced from the UOP/ENI EcofiningTM process to meet fuel specifications by increasing density and aromatic content. ...

Lixiong Li; Edward Coppola; Jeffrey Rine; Jonathan L. Miller; Devin Walker

2010-01-13T23:59:59.000Z

157

Metatranscriptomics reveal differences in in situ energy and nitrogen metabolism among hydrothermal vent snail symbionts  

E-Print Network (OSTI)

Despite the ubiquity of chemoautotrophic symbioses at hydrothermal vents, our understanding of the influence of environmental chemistry on symbiont metabolism is limited. Transcriptomic analyses are useful for linking ...

Sanders, J. G.

158

The origin of brucite in hydrothermally altered limestone near Devil Peak, Nevada.  

E-Print Network (OSTI)

??Open-space brucite was identified in veins crosscutting hydrothermally altered limestone near the Devil Peak rhyolite plug in southern Nevada. The brucite occurs with serpentine, calcite, (more)

Knupp, Rhonda L.

1999-01-01T23:59:59.000Z

159

Utilization of aqueous product generated by hydrothermal carbonization of waste biomass.  

E-Print Network (OSTI)

??Hydrothermal carbonization (HTC) is a thermochemical treatment process that allows for the conversion of relatively dilute biomass slurries into value added products which are hydrochar (more)

Vozhdayev, Georgiy Vladimirovich

2014-01-01T23:59:59.000Z

160

Phase I - Resource Procurement and Identification | Open Energy Information  

Open Energy Info (EERE)

- Resource Procurement and Identification - Resource Procurement and Identification Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home GEA Development Phase I: Resource Procurement and Identification GEA Development Phases The Geothermal Energy Association's (GEA) Geothermal Reporting Terms and Definitions are a guideline for geothermal developers to use when submitting geothermal resource development information to GEA for public dissemination in its annual US Geothermal Power Production and Development Update. GEA's Geothermal Reporting Terms and Definitions serve to increase the consistency, accuracy, and reliability of industry information presented in the development updates. Phase I - Resource Procurement and Identification Phase II - Resource Exploration and Confirmation Phase III - Permitting and Initial Development

Note: This page contains sample records for the topic "hydrothermal gea development" 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.
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to obtain the most current and comprehensive results.


161

Phase II - Resource Exploration and Confirmation | Open Energy Information  

Open Energy Info (EERE)

Phase II - Resource Exploration and Confirmation Phase II - Resource Exploration and Confirmation Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home GEA Development Phase II: Resource Exploration and Confirmation GEA Development Phases The Geothermal Energy Association's (GEA) Geothermal Reporting Terms and Definitions are a guideline for geothermal developers to use when submitting geothermal resource development information to GEA for public dissemination in its annual US Geothermal Power Production and Development Update. GEA's Geothermal Reporting Terms and Definitions serve to increase the consistency, accuracy, and reliability of industry information presented in the development updates. Phase I - Resource Procurement and Identification Phase II - Resource Exploration and Confirmation Phase III - Permitting and Initial Development

162

Phase IV - Resource Production and Power Plant Construction | Open Energy  

Open Energy Info (EERE)

Phase IV - Resource Production and Power Plant Construction Phase IV - Resource Production and Power Plant Construction Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home GEA Development Phase IV: Resource Production and Power Plant Construction GEA Development Phases The Geothermal Energy Association's (GEA) Geothermal Reporting Terms and Definitions are a guideline for geothermal developers to use when submitting geothermal resource development information to GEA for public dissemination in its annual US Geothermal Power Production and Development Update. GEA's Geothermal Reporting Terms and Definitions serve to increase the consistency, accuracy, and reliability of industry information presented in the development updates. Phase I - Resource Procurement and Identification Phase II - Resource Exploration and Confirmation

163

Evaluation of hydrothermal resources of North Dakota. Phase II. Final technical report  

SciTech Connect

This evaluation of the hydrothermal resources of North Dakota is based on existing data on file with the North Dakota Geological Survey (NDGS) and other state and federal agencies, and field and laboratory studies conducted. The principal sources of data used during the Phase II study were WELLFILE, the computer library of oil and gas well data developed during the Phase I study, and WATERCAT, a computer library system of water well data assembled during the Phase II study. A field survey of the shallow geothermal gradients present in selected groundwater observation holes was conducted. Laboratory determinations of the thermal conductivity of core samples is being done to facilitate heat-flow calculations on those hole-of-convenience cased.

Harris, K.L.; Howell, F.L.; Winczewski, L.M.; Wartman, B.L.; Umphrey, H.R.; Anderson, S.B.

1981-06-01T23:59:59.000Z

164

Investigation of Lignin Deposition on Cellulose During Hydrothermal Pretreatment, Its Effect on  

E-Print Network (OSTI)

Investigation of Lignin Deposition on Cellulose During Hydrothermal Pretreatment, Its Effect Ridge, Tennessee ABSTRACT: In dilute acid pretreatment of lignocellulosic biomass, lignin has been shown formed by hydrothermal pretreatment of a mixture of Avicel cellulose and poplar wood showed that lignin

California at Riverside, University of

165

30,000 Years of Hydrothermal Activity at the Lost City Vent Field  

Science Journals Connector (OSTI)

...mineralogy and porosity may be related...sedimentary rocks, hydrothermal...uncorrected for reservoir ages. Mineral abbreviations...and crack permeabilities, are much...wide range of porosity, friability...mineralogy and porosity may be related...sedimentary rocks, hydrothermal...uncorrected for reservoir ages...

Gretchen L. Frh-Green; Deborah S. Kelley; Stefano M. Bernasconi; Jeffrey A. Karson; Kristin A. Ludwig; David A. Butterfield; Chiara Boschi; Giora Proskurowski

2003-07-25T23:59:59.000Z

166

IEEE TRANSACTIONS ON POWER SYSTEMS 1 Nash-Cournot Equilibria in Hydrothermal  

E-Print Network (OSTI)

IEEE TRANSACTIONS ON POWER SYSTEMS 1 Nash-Cournot Equilibria in Hydrothermal Electricity Markets the market clearance prices within a hydrothermal power exchange market that incorporates network constraints. An analysis is made of the degree of market power exerted by the various agents. The Nash-Cournot equilibrium

Catholic University of Chile (Universidad Católica de Chile)

167

HYDROTHERMAL ACTIVITY AND CARBON-DIOXIDE DISCHARGE AT SHRUB AND UPPER KLAWASI MUD VOLCANOES,  

E-Print Network (OSTI)

HYDROTHERMAL ACTIVITY AND CARBON-DIOXIDE DISCHARGE AT SHRUB AND UPPER KLAWASI MUD VOLCANOES and July 1973 at Shrub and Upper Klawasi mud volcanoes 8 ii #12;HYDROTHERMAL ACTIVITY AND CARBON. Map of diffuse carbon dioxide flow from soils near the summit of Shrub mud volcano 9 TABLES 1

168

Involvement of Intermediate Sulfur Species in Biological Reduction of Elemental Sulfur under Acidic, Hydrothermal Conditions  

E-Print Network (OSTI)

, Hydrothermal Conditions Eric S. Boyd,a Gregory K. Druschelb Department of Chemistry and Biochemistry, Montana in size, a rate which was influenced by the pH of the me- dium and the presence of organic carbon. Thus, S to serve as a growth-promoting TEA for A. sulfurireducens. Terrestrial and hydrothermal spring source

Ahmad, Sajjad

169

The discovery of chemoautotrophic symbionts in the hydrothermal vent tubeworm Riftia pachyptila expanded our  

E-Print Network (OSTI)

The discovery of chemoautotrophic symbionts in the hydrothermal vent tubeworm Riftia pachyptila, the bacteria fix inorganic carbon and oxidize reduced inorganic substrates, such as reduced sulfur compounds at hydrothermal vents, hydrocarbon seeps and other chemically reduced deep-sea environments, exhibit a suite

Girguis, Peter R.

170

Hydrothermal dolomites in SW Sardinia (Italy): evidence for a widespread late-Variscan fluid flow event  

E-Print Network (OSTI)

Hydrothermal dolomites in SW Sardinia (Italy): evidence for a widespread late-Variscan fluid flow, the Cambrian carbonates underwent ductile deformation and greenschist facies metamorphism. The same is true-temperature metamorphic rocks within the overlying nappes. It is assumed that a late-Variscan hydrothermal event, which

Boni, Maria

171

Dynamics of hydrothermal seeps from the Salton Sea geothermal system (California, USA) constrained by temperature monitoring  

E-Print Network (OSTI)

Dynamics of hydrothermal seeps from the Salton Sea geothermal system (California, USA) constrained-, and petroleum-bearing seeps are part of the Salton Sea geothermal system (SSGS) in southern California. Carbon likely reflect a combination of hydrothermal flux variations from the SSGS and the local temporal changes

Svensen, Henrik

172

Linking Hydrothermal Geochemistry to Organismal Physiology: Physiological Versatility in Riftia pachyptila  

E-Print Network (OSTI)

Linking Hydrothermal Geochemistry to Organismal Physiology: Physiological Versatility in Riftia and oxygen to generate energy for carbon fixation, and the symbiont's nitrate reduction to ammonia for energy in the EPR and the Guaymas basin, a sedimented, hydrothermal vent field. We observed marked differences

Girguis, Peter R.

173

Sources of organic nitrogen at the serpentinite-hosted Lost City hydrothermal field  

E-Print Network (OSTI)

Sources of organic nitrogen at the serpentinite-hosted Lost City hydrothermal field S. Q. LANG,1 G environment, the Lost City hydrothermal field (30°N, Mid-Atlantic Ridge). Total hydrolizable amino acid (THAA carbon (2.5­15.1%). The amino acid distributions, and the relative concentrations of these compounds

Gilli, Adrian

174

Carbon geochemistry of serpentinites in the Lost City Hydrothermal System (30N, MAR)  

E-Print Network (OSTI)

Carbon geochemistry of serpentinites in the Lost City Hydrothermal System (30°N, MAR) Ade May 2008 Abstract The carbon geochemistry of serpentinized peridotites and gabbroic rocks recovered at the Lost City Hydrothermal Field (LCHF) and drilled at IODP Hole 1309D at the central dome of the Atlantis

Gilli, Adrian

175

Introduction The deep-sea hydrothermal vent communities were discovered in  

E-Print Network (OSTI)

312 Introduction The deep-sea hydrothermal vent communities were discovered in 1977 and immediately (a monospecific genus) must have high rates of carbon fixation to support their growth. The physiological functioning of hydrothermal vent species, especially R. pachyptila, was studied intensively

Girguis, Peter R.

176

Mineralmicrobe interactions in deep-sea hydrothermal systems: a challenge for Raman spectroscopy  

Science Journals Connector (OSTI)

...90)90261-I ) Owen, H. , D. E. Battery, M. J. Pelletier, and S. Slater1998New...hydrothermal environments, steep chemical and thermal gradients, rapid and turbulent mixing...hydrothermal environments, steep chemical and thermal gradients, rapid and turbulent mixing...

2010-01-01T23:59:59.000Z

177

Effect of Microwave Frequency on Hydrothermal Synthesis of Nanocrystalline Tetragonal Barium Titanate  

E-Print Network (OSTI)

Effect of Microwave Frequency on Hydrothermal Synthesis of Nanocrystalline Tetragonal Barium) with particle sizes ranging from 30 to 100 nm were synthesized via microwave-hydrothermal routes at various, but increased gradually with extended aging time in variable frequency (3-5.5 GHz to 1 s) processing

Dutta, Prabir K.

178

INFLUENCE OF HYDROTHERMAL TREATMENT ON RHEOLOGICAL AND COOKING CHARACTERISTICS OF FRESH EGG PASTA  

E-Print Network (OSTI)

0 INFLUENCE OF HYDROTHERMAL TREATMENT ON RHEOLOGICAL AND COOKING CHARACTERISTICS OF FRESH EGG PASTA@univ-lr.fr Keywords: D.I.C. Hydrothermal treatment; Fresh egg pasta; Mechanical properties; Apparent density; Cooking (2008) 283­291" DOI : 10.1016/j.jcs.2007.04.014 #12;1 Abstract. The effect of D.I.C. processing

Paris-Sud XI, Université de

179

Research paper Nanostructured calcite precipitated under hydrothermal conditions in the presence  

E-Print Network (OSTI)

. This has relevance for geological processes in diverse environments, such as hydrothermal systems along midResearch paper Nanostructured calcite precipitated under hydrothermal conditions in the presence, Département MCMF, CNRS, 25 Avenue des Martyrs, 38042 Grenoble, France e Physics of Geological Processes

180

EFFECT OF HYDROTHERMAL TREATMENT ON PHYSICOCHEMICAL1 PROPERTIES OF WHEAT, WAXY AND STANDARD MAIZE STARCHES2  

E-Print Network (OSTI)

1 EFFECT OF HYDROTHERMAL TREATMENT ON PHYSICOCHEMICAL1 PROPERTIES OF WHEAT, WAXY AND STANDARD MAIZE.10.005 #12;2 ABSTRACT18 Standard maize (SMS), waxy maize (WMS) and wheat (WTS) starches were19 hydrothermally treated at three pressure levels. Effects of D.I.C. processing conditions20 on thermal characteristics

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "hydrothermal gea development" 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.


181

Solving net constrained hydrothermal Nash-Cournot equilibrium problems via the  

E-Print Network (OSTI)

Solving net constrained hydrothermal Nash-Cournot equilibrium problems via the proximal decades, the electric power industry has experienced deregulation processes in most of the countries markets are presented. Bilevel optimization is proposed in [8, 15] to model a hydrothermal coordination

Solodov, Mikhail V.

182

Hydrothermal transport and deposition of the rare earth elements by fluorine-bearing aqueous liquids  

E-Print Network (OSTI)

ARTICLE Hydrothermal transport and deposition of the rare earth elements by fluorine environmental concerns, have created a great demand for the rare earth elements (REE), and focused considerable Hydrothermal concentration of the rare earth elements (REE) to economic and potentially economic levels has

183

Complete Genome Analysis of Sulfobacillus acidophilus Strain TPY, Isolated from a Hydrothermal Vent in the Pacific Ocean  

Science Journals Connector (OSTI)

...from a Hydrothermal Vent in the Pacific Ocean Bo Li 1 Yaping Chen 2 3 Qian Liu...from a hydrothermal vent in the Pacific Ocean. Ferrous iron and sulfur oxidation...from a hydrothermal vent in the Pacific Ocean (1229N, 10401 water depth...

Bo Li; Yaping Chen; Qian Liu; Songnian Hu; Xinhua Chen

2011-10-01T23:59:59.000Z

184

The Behaviour of Base Metals in Arc-Type Magmatic-Hydrothermal Systems Insights from Merapi Volcano,  

E-Print Network (OSTI)

zone stratovolcanoes provide important windows on the magmatic-hydrothermal processes at playThe Behaviour of Base Metals in Arc-Type Magmatic- Hydrothermal Systems ­ Insights from Merapi systems include a shallow magmatic reservoir (the porphyry stock), an overlying hydrothermal cell, its

Barnes, Sarah-Jane

185

GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS, VOL. ???, XXXX, DOI:10.1029/, Flow Rate Perturbations in a Black Smoker Hydrothermal1  

E-Print Network (OSTI)

of aque-21 ous fluids within mid-ocean ridge hydrothermal systems and mechanical processes22 between mid-35 ocean ridge hydrothermal fluid flow and mechanical processes, there have been no36 direct in a Black Smoker Hydrothermal1 Vent In Response to a Mid-Ocean Ridge Earthquake Swarm2 Timothy J. Crone

Wilcock, William

186

A numerical model of hydrothermal cooling and crustal accretion at a fast spreading mid-ocean ridge  

E-Print Network (OSTI)

: 7360 words, 11 figures. Keywords: Mid-ocean ridge processes; hydrothermal cooling; numerical modelA numerical model of hydrothermal cooling and crustal accretion at a fast spreading mid-ocean ridge present a steady state numerical representation of the sill model that explicitly includes hydrothermal

Toomey, Doug

187

Physical properties of upper oceanic crust: Ocean Drilling Program Hole 801C and the waning of hydrothermal circulation  

E-Print Network (OSTI)

Marine Geology and Geophysics: Heat flow (benthic) and hydrothermal processes; 7220 Seismology: Oceanic of hydrothermal circulation Richard D. Jarrard,1 Lewis J. Abrams,2 Robert Pockalny,3 Roger L. Larson,3 and Tetsuro 2003. [1] The hydrologic evolution of oceanic crust, from vigorous hydrothermal circulation in young

Abrams, Lewis J.

188

Magnetic fabrics and fluid flow directions in hydrothermal systems. A case study in the Chaillac BaFFe deposits  

E-Print Network (OSTI)

of anisotropy of magnetic susceptibility (AMS) to describe the mineralizing process in hydrothermal systems. BaMagnetic fabrics and fluid flow directions in hydrothermal systems. A case study in the Chaillac Ba hydrothermal textures and tectonic structures have been described in veins, sinters, and sandstone cemented

Paris-Sud XI, Université de

189

PII S0016-7037(98)00209-9 Gold solubility and speciation in hydrothermal solutions: Experimental study of the  

E-Print Network (OSTI)

and deposition of gold in ore-forming processes. The most important ligands in hydrothermal gold-bearing soPII S0016-7037(98)00209-9 Gold solubility and speciation in hydrothermal solutions: Experimental Science Ltd 1. INTRODUCTION Field and mineralogical studies of hydrothermal gold deposits demonstrate

Paris-Sud XI, Université de

190

Hydrothermal Synthesis of Dy-Doped BaTiO3 Powders ERSIN E. OREN and A. CUNEYT TAS  

E-Print Network (OSTI)

. Hydrothermal processing sis method used and temperature, may exhibit four different of BaTiO3 powders has) are "ferroelectric." hydrothermal processing required a pH 12 in the aqueous BaTiO3 is of the tetragonal symmetryHydrothermal Synthesis of Dy-Doped BaTiO3 Powders ERSIN E. OREN and A. CUNEYT TAS Submicron

Tas, A. Cuneyt

191

Synthesis of FeNi3 Alloyed Nanoparticles by Hydrothermal Reduction Qilong Liao,, Rina Tannenbaum, and Zhong Lin Wang*,  

E-Print Network (OSTI)

method.12 The hydrothermal process appears to be a very effective method for preparing alloyedSynthesis of FeNi3 Alloyed Nanoparticles by Hydrothermal Reduction Qilong Liao,, Rina Tannenbaum paper presents a facile and low-cost hydrothermal method to synthesize stoichiometric FeNi3 alloy

Wang, Zhong L.

192

Anaerobic Respiration on Tellurate and Other Metalloids in Bacteria from Hydrothermal Vent Fields in the Eastern Pacific Ocean  

Science Journals Connector (OSTI)

...tellurate, we noted first a drop in colony...source of reducing power for bioreduction...respiration at deep ocean hydrothermal vents...ER-V-6 is the first metavanadate-respiring...isolated from deep ocean hydrothermal vents...vent worms. The first evidence for selenite...bacteria from deep ocean hydrothermal vents...

Julius T. Csotonyi; Erko Stackebrandt; Vladimir Yurkov

2006-07-01T23:59:59.000Z

193

An Oxygen Isotope Study Of Hydrothermal Alteration In The Lake City  

Open Energy Info (EERE)

Isotope Study Of Hydrothermal Alteration In The Lake City Isotope Study Of Hydrothermal Alteration In The Lake City Caldera, San Juan Mountains, Colorado Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Oxygen Isotope Study Of Hydrothermal Alteration In The Lake City Caldera, San Juan Mountains, Colorado Details Activities (2) Areas (1) Regions (0) Abstract: A 23-m.y.-old, fossil meteoric-hydrothermal system in the Lake City caldera (11 _ 14 km) has been mapped out by measuring Δ 18O values of 300 rock and mineral samples. Δ 18O varies systematically throughout the caldera, reaching values as low as -2. Great topographic relief, regional tilting, and variable degrees of erosion within the caldera all combine to give us a very complete section through the hydrothermal system, from the

194

Inferences On The Hydrothermal System Beneath The Resurgent Dome In Long  

Open Energy Info (EERE)

Inferences On The Hydrothermal System Beneath The Resurgent Dome In Long Inferences On The Hydrothermal System Beneath The Resurgent Dome In Long Valley Caldera, East-Central California, Usa, From Recent Pumping Tests And Geochemical Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Inferences On The Hydrothermal System Beneath The Resurgent Dome In Long Valley Caldera, East-Central California, Usa, From Recent Pumping Tests And Geochemical Sampling Details Activities (6) Areas (1) Regions (0) Abstract: Quaternary volcanic unrest has provided heat for episodic hydrothermal circulation in the Long Valley caldera, including the present-day hydrothermal system, which has been active over the past 40 kyr. The most recent period of crustal unrest in this region of east-central California began around 1980 and has included periods of

195

K-Ar Dates Of Hydrothermal Clays From Core Hole Vc-2B, Valles Caldera, New  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » K-Ar Dates Of Hydrothermal Clays From Core Hole Vc-2B, Valles Caldera, New Mexico And Their Relation To Alteration In A Large Hydrothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: K-Ar Dates Of Hydrothermal Clays From Core Hole Vc-2B, Valles Caldera, New Mexico And Their Relation To Alteration In A Large Hydrothermal System Details Activities (2) Areas (1) Regions (0) Abstract: Seventeen K/Ar dates were obtained on illitic clays within Valles caldera (1.13 Ma) to investigate the impact of hydrothermal alteration on Quaternary to Precambrian intracaldera and pre-caldera rocks in a large,

196

Evolution Of Hydrothermal Waters At Mount St Helens, Washington, Usa | Open  

Open Energy Info (EERE)

Evolution Of Hydrothermal Waters At Mount St Helens, Washington, Usa Evolution Of Hydrothermal Waters At Mount St Helens, Washington, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Evolution Of Hydrothermal Waters At Mount St Helens, Washington, Usa Details Activities (4) Areas (1) Regions (0) Abstract: Hydrothermal water samples at Mount St. Helens collected between 1985 and 1989 and in 1994 are used to identify water types and describe their evolution through time. Two types of low temperature hydrothermal systems are associated with the 1980 eruptions and were initiated soon after emplacement of shallow magma and pyroclastic flows. The Loowit hot spring system is located in the breach zone and is associated with the magma conduit and nearby avalanche deposits, whereas the Pumice Plain (PP)

197

Development of a plan to implement enhanced geothermal system...  

Open Energy Info (EERE)

hydrothermal systems at the other. This report provides a concept for development of a Combined Technologies Project with construction and operation of a 6 MW (net) binary-cycle...

198

Microwave-assisted hydrothermal synthesis of porous SnO{sub 2} nanotubes and their lithium ion storage properties  

SciTech Connect

Porous SnO{sub 2} nanotubes have been synthesized by a rapid microwave-assisted hydrothermal process followed by annealing in air. The detailed morphological and structural studies indicate that the SnO{sub 2} tubes typically have diameters from 200 to 400 nm, lengths from 0.5 to 1.5 {mu}m and wall thicknesses from 50 to 100 nm. The SnO{sub 2} nanotubes are self-assembled by interconnected nanocrystals with sizes {approx}8 nm resulting in a specific surface area of {approx}54 m{sup 2} g{sup -1}. The pristine SnO{sub 2} nanotubes are used to fabricate lithium half cells to evaluate their lithium ion storage properties. The porous SnO{sub 2} nanotubes are characteristic with high lithium ion storage capacity, that is found to be 1258, 951, 757, 603, 458, and 288 mAh g{sup -1}, at 0.1, 0.2, 0.5, 1, 2, and 4C, respectively. The enhanced electrochemical properties of the SnO{sub 2} nanotubes can be ascribed to their unique geometry and porous structures. - Graphical abstract: Porous SnO{sub 2} nanotubes are synthesized by a fast microwave-assisted hydrothermal process and exhibit high lithium ion storage properties due to their unique geometry and porous characteristics. Highlights: Black-Right-Pointing-Pointer A microwave-assisted hydrothermal method was used to prepare porous SnO{sub 2} nanotubes. Black-Right-Pointing-Pointer The porous SnO{sub 2} nanotubes have abundant mesopores on their tube walls. Black-Right-Pointing-Pointer The porous SnO{sub 2} nanotubes possess high lithium ion storage properties. Black-Right-Pointing-Pointer Our results may promote the development of high-performance anode materials.

Wang, H.E., E-mail: hongen.wang@gmail.com [Department of Physics and Materials Science, City University of Hong Kong (Hong Kong); Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong (Hong Kong); Xi, L.J.; Ma, R.G. [Department of Physics and Materials Science, City University of Hong Kong (Hong Kong); Lu, Z.G. [School of Chemistry and Chemical Engineering, Central South University, Changsha 410083 (China); Chung, C.Y. [Department of Physics and Materials Science, City University of Hong Kong (Hong Kong); Bello, I. [Department of Physics and Materials Science, City University of Hong Kong (Hong Kong); Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong (Hong Kong); Zapien, J.A., E-mail: apjazs@cityu.edu.hk [Department of Physics and Materials Science, City University of Hong Kong (Hong Kong); Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong (Hong Kong)

2012-06-15T23:59:59.000Z

199

New Evidence On The Hydrothermal System In Long Valley Caldera, California,  

Open Energy Info (EERE)

New Evidence On The Hydrothermal System In Long Valley Caldera, California, New Evidence On The Hydrothermal System In Long Valley Caldera, California, From Wells, Fluid Sampling, Electrical Geophysics, And Age Determinations Of Hot-Spring Deposits Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: New Evidence On The Hydrothermal System In Long Valley Caldera, California, From Wells, Fluid Sampling, Electrical Geophysics, And Age Determinations Of Hot-Spring Deposits Abstract Data collected since 1985 from test drilling, fluid sampling, and geologic and geophysical investigations provide a clearer definition of the hydrothermal system in Long Valley caldera than was previously available. This information confirms the existence of high-temperature (> 200°C) reservoirs within the volcanic fill in parts of the west moat. These

200

Hydrothermal Circulation At Mount St Helens Determined By Self-Potential  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Hydrothermal Circulation At Mount St Helens Determined By Self-Potential Measurements Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Hydrothermal Circulation At Mount St Helens Determined By Self-Potential Measurements Details Activities (1) Areas (1) Regions (0) Abstract: The distribution of hydrothermal circulation within active volcanoes is of importance in identifying regions of hydrothermal alteration which may in turn control explosivity, slope stability and sector collapse. Self-potential measurements, indicative of fluid circulation, were made within the crater of Mount St. Helens in 2000 and

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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

Bioenergy Technologies Office Conversion R&D Pathway: Whole Algae Hydrothermal Liquefaction  

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

Whole algae hydrothermal liquefaction is one of eight priority pathways chosen to convert biomass into hydrocarbon fuels by the Bioenergy Technologies Office. These pathways were down-selected from an initial list of 18.

202

A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrotherm...  

Open Energy Info (EERE)

pre-intrusive metavolcanic and metasedimentary rocks can have considerably higher Sr-isotope ratios (0.7061-0.7246 and 0.7090-0.7250, respectively). Hydrothermally altered...

203

Elemental and isotopic compositions of the hydrothermal sulfide on the East Pacific Rise near 13N  

Science Journals Connector (OSTI)

The mineralogical, elemental, and isotopic characteristics of a hydrothermal sulfide sample from one dredge station (1242.30?N, 10354.48?W, water depth 2655 m) on the East Pacific Rise near 13N were analyze...

ZhiGang Zeng; DaiGeng Chen; XueBo Yin; XiaoYuan Wang

2010-02-01T23:59:59.000Z

204

Influence of Proteins on the Hydrothermal Gasification and Liquefaction of Biomass. 1. Comparison of Different Feedstocks  

Science Journals Connector (OSTI)

The hydrothermal gasification of glucose with the addition of K2CO3 and two biomass feedstocks was performed in a continuous stirred tank reactor at 500 C and 30 MPa. ...

Andrea Kruse; Andrzej Krupka; Valentin Schwarzkopf; Cline Gamard; Thomas Henningsen

2005-03-17T23:59:59.000Z

205

Biogeography and Evolution of Hydrothermal-Vent Fauna in the Eastern Pacific Ocean  

Science Journals Connector (OSTI)

...Hydrothermal-Vent Fauna in the Eastern Pacific Ocean Verena Tunnicliffe The biogeography...the spreading history of mid-ocean ridges. Extensive collections...active ridge systems in the eastern Pacific Ocean provide an opportunity to examine...

1988-01-01T23:59:59.000Z

206

Seismic Evidence For A Hydrothermal Layer Above The Solid Roof Of The Axial  

Open Energy Info (EERE)

Evidence For A Hydrothermal Layer Above The Solid Roof Of The Axial Evidence For A Hydrothermal Layer Above The Solid Roof Of The Axial Magma Chamber At The Southern East Pacific Rise Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Seismic Evidence For A Hydrothermal Layer Above The Solid Roof Of The Axial Magma Chamber At The Southern East Pacific Rise Details Activities (1) Areas (1) Regions (0) Abstract: A full-waveform inversion of two-ship, wide-aperture, seismic reflection data from a ridge-crest seismic line at the southern East Pacific Rise indicates that the axial magma chamber here is about 50 m thick, is embedded within a solid roof, and has a solid floor. The 50-60-m-thick roof is overlain by a 150-200-m-thick low-velocity zone that may correspond to a fracture zone that hosts the hydrothermal circulation,

207

Hydrothermal Treatment of a Sub-bituminous Coal and Its Use in Coking Blends  

Science Journals Connector (OSTI)

Crucible coking determinations suggest that hydrothermal treatment can greatly increase the coke strength and the particle coke strength after reaction toward CO2 and decrease the coke reactivity when the hydrothermally treated coals were used in the coal blends instead of the raw coal. ... While the cokes from the crucible coking experiments were subjected to 800 rotations at a speed of 25 rpm, the weight percent of coke particles (>0.2 ... The coal charges were coked in the lab. ...

Hengfu Shui; Ye Wu; Zhicai Wang; Zhiping Lei; Changhui Lin; Shibiao Ren; Chunxiu Pan; Shigang Kang

2012-11-26T23:59:59.000Z

208

Hydrothermal metamorphism and low-temperature alteration on the Mid-Atlantic ridge  

E-Print Network (OSTI)

inferred hydrothermal fluid vent sites. The style of alteration of these rocks ranges from weathering at ambient ocean floor temperatures to metamorphism at greenshist facies conditions, The alteration products associated with the weathered ba- salts... collected from the hydrothermal vent site exhibit chemistries similar to those expected for rocks weathered at low temperatures. These rocks have lost Mg, Si, Ca and S and have gained K, Mn, H 0 and 2 possibly Pe. The greenschist facies rocks...

Peron, Philippe Raymond

2012-06-07T23:59:59.000Z

209

Possible Origin of Improved High Temperature Performance of Hydrothermally Aged Cu/Beta Zeolite Catalysts  

SciTech Connect

The hydrothermal stability of Cu/beta NH3 SCR catalysts are explored here. In particular, this paper focuses on the interesting ability of this catalyst to maintain and even enhance high-temperature performance for the "standard" SCR reaction after modest (900 C, 2 hours) hydrothermal aging. Characterization of the fresh and aged catalysts was performed with an aim to identify possible catalytic phases responsible for the enhanced high temperature performance. XRD, TEM and 27Al NMR all showed that the hydrothermally aging conditions used here resulted in almost complete loss of the beta zeolite structure between 1 and 2 hours aging. While the 27Al NMR spectra of 2 and 10 hour hydrothermally-aged catalysts showed significant loss of a peak associated with tetrahedrally-coordinated Al species, no new spectral features were evident. Two model catalysts, suggested by these characterization data as possible mimics of the catalytic phase formed during hydrothermal aging of Cu/beta, were prepared and tested for their performance in the "standard" SCR and NH3 oxidation reactions. The similarity in their reactivity compared to the 2 hour hydrothermally-aged Cu/beta catalyst suggests possible routes for preparing multi-component catalysts that may have wider temperature windows for optimum performance than those provided by current Cu/zeolite catalysts.

Peden, Charles HF; Kwak, Ja Hun; Burton, Sarah D.; Tonkyn, Russell G.; Kim, Do Heui; Lee, Jong H.; Jen, H. W.; Cavattaio, Giovanni; Cheng, Yisun; Lambert, Christine

2012-04-30T23:59:59.000Z

210

Preservation of iron(II) by carbon-rich matrices in a hydrothermal plume  

SciTech Connect

Hydrothermal venting associated with mid-ocean ridge volcanism is globally widespread. This venting is responsible for a dissolved iron flux to the ocean that is approximately equal to that associated with continental riverine runoff. For hydrothermal fluxes, it has long been assumed that most of the iron entering the oceans is precipitated in inorganic forms. However, the possibility of globally significant fluxes of iron escaping these mass precipitation events and entering open-ocean cycles is now being debated, and two recent studies suggest that dissolved organic ligands might influence the fate of hydrothermally vented metals. Here we present spectromicroscopic measurements of iron and carbon in hydrothermal plume particles at the East Pacific Rise mid-ocean ridge. We show that organic carbon-rich matrices, containing evenly dispersed iron(II)-rich materials, are pervasive in hydrothermal plume particles. The absence of discrete iron(II) particles suggests that the carbon and iron associate through sorption or complexation. We suggest that these carbon matrices stabilize iron(II) released from hydrothermal vents in the region, preventing its oxidation and/or precipitation as insoluble minerals. Our findings have implications for deep-sea biogeochemical cycling of iron, a widely recognized limiting nutrient in the oceans.

Toner, Brandy M.; Fakra, Sirine C.; Manganini, Steven J.; Santelli, Cara M.; Marcus, Matthew A.; Moffett, James W.; Rouxel, Olivier; German, Christopher R.; Edwards, Katrina J.

2008-09-20T23:59:59.000Z

211

Hydrothermal processing of chlorinated hydrocarbons in a titanium reactor  

SciTech Connect

Experiments are reported on the oxidative hydrothermal destruction of chlorinated organics in a corrosion-resistant titanium reactor. Oxidation reaction conditions were 250-500 {degree}C near 650 bar and reaction times of 30-100 s in a continuous-flow reactor. Trichloroacetic acid, trichloroethylene, and 1,1,1-trichloroethane behaved similarly. The organic concentration was approximately 1.5 wt%; hydrogen peroxide was the oxidizer; sodium bicarbonate was added to achieve neutral pH. Hydrolysis occurs at low temperature, producing chloride ion and secondary organics. Carbon dioxide is the sole carbon product at 500 {degree}C. Sodium nitrate and sodium nitrite were also found to be effective oxidizers. Corrosion of the titanium was found to be slight (<0.038 mm/yr). The reaction mixture is likely not a single phase at these conditions. The destruction efficiency for trichloroethylene was estimated as 99.96% at 450 {degree}C and 60 s, with <0.02% conversion to volatile chlorinated organic byproducts. 33 refs., 9 figs., 6 tabs.

Foy, B.R.; Waldthausen, K.; Sedillo, M.A.; Buelow, S.J. [Los Alamos National Lab., NM (United States)] [Los Alamos National Lab., NM (United States)

1996-09-01T23:59:59.000Z

212

Optimal operation of hydrothermal systems with Hydrological Scenario Generation through Bootstrap and Periodic Autoregressive Models  

Science Journals Connector (OSTI)

In electrical power systems with strong hydro generation, the use of adequate techniques to generate synthetic hydrological scenarios is extremely important for the evaluation of the ways the system behaves in order to meet the forecast energy demand. This paper proposes a new model to generate natural inflow energy scenarios in the long-term operation planning of large-sized hydrothermal systems. This model is based on the Periodic Autoregressive Model, PAR (p), where the identification of the p orders is based on the significance of the Partial Autocorrelation Function (PACF) estimated via Bootstrap, an intensive computational technique. The scenarios generated through this new technique were applied to the operation planning of the Brazilian Electrical System (BES), using the previously developed methodology of Stochastic Dynamic Programming based on Convex Hull algorithm (SDP-CHull). The results show that identification via Bootstrap is considerably more parsimonious, leading to the identification of lower orders models in most cases which retains the statistical characteristics of the original series. Additionally it presents a closer total mean operation cost when compared to the cost obtained via historic series.

Reinaldo Castro Souza; Andr Lu?s Marques Marcato; Bruno Henriques Dias; Fernando Luiz Cyrino Oliveira

2012-01-01T23:59:59.000Z

213

Job 4459300 Ref.No. Prepd. CHP/GEA  

E-Print Network (OSTI)

Auditing of Buildings and Inspection of Boilers and Air- conditioning Systems Final report Institutional in large buildings 5 2.2 Article 8, Inspection of boilers 6 2.3 Article 9, Inspection of air-conditioning, responsibility for buildings, boilers and air-con systems in Latvia is divided as illustrated below

214

CanGEA Fifth Annual Geothermal Conference Presentation - Mapping...  

Energy Savers (EERE)

& Database Workshop Mapping and database workshop presentation presented at the Canadian Geothermal Energy Association Fifth Annual Geothermal Conference on March 21, 2013 by...

215

Are there significant hydrothermal resources in the US part of the Cascade Range?  

SciTech Connect

The Cascade Range is a geothermal dichotomy. On the one hand, it is an active volcanic arc above a subducting plate and is demonstrably an area of high heat flow. On the other hand, the distribution of hydrothermal manifestations compared to other volcanic arcs is sparse, and the hydrothermal outflow calculated from stream chemistry is low. Several large estimates of undiscovered geothermal resources in the U.S. part of the Cascade Range prepared in the 1970s and early 1980s were based fundamentally on two models of the upper crust. One model assumed that large, partly molten, intrusive bodies exist in the upper 10 km beneath major volcanic centers and serve as the thermal engines driving overlying hydrothermal systems. The other model interpreted the coincident heat-flow and gravity gradients west of the Cascade crest in central Oregon to indicate a partly molten heat source at 10 {+-} 2 km depth extending {approx}30 km west from the axis of the range. Investigations of the past ten years have called both models into question. Large long-lived high-temperature hydrothermal systems at depths <3 km in the U.S. part of the Cascade Range appear to be restricted to silicic domefields at the Lassen volcanic center, Medicine Lake volcano, Newberry volcano, and possibly the Three Sisters. Federal land-use restrictions further reduce this list to Medicine Lake and Newberry. Dominantly andesitic stratocones appear to support only small transitory hydrothermal systems related to small intrusive bodies along the volcanic conduits. The only young caldera, at Crater Lake, supports only low- to intermediate-temperature hydrothermal systems. Most of the Cascade Range comprises basaltic andesites and has little likelihood for high-level silicic intrusions and virtually no potential for resultant large high-temperature hydrothermal systems. Undiscovered hydrothermal resources of the Cascade Range of the United States are substantially lower than previous estimates. The range does have potential for intermediate-temperature hot dry rock and localized low- to intermediate-temperature hydrothermal systems.

Muffler, L.J. Patrick; Guffanti, Marianne

1995-01-26T23:59:59.000Z

216

Improved thermoelectric performance in polycrystalline p -type Bi 2 Te 3 via an alkali metal salt hydrothermal nanocoating treatment approach  

Science Journals Connector (OSTI)

We report herein a proof-of-principle study of grain boundary engineering in the polycrystalline p -type Bi 2 Te 3 system. Utilizing the recently developed hydrothermal nanocoating treatment technique we fabricated an alkali-metal(s)-containing surface layer on the p -Bi 2 Te 3 bulk grain which in turn became part of the grain boundary upon hot pressing densification. Compared to the untreated bulk reference the dimensionless figure of merit Z T has been improved by ? 30 % in the Na-treated sample chiefly due to the reduced thermal conductivity and ? 38 % in the Rb-treated sample mainly owing to the improved power factor. The grain boundary phase provides a new avenue by which one can potentially decouple the otherwise inter-related electrical resistivity Seebeck coefficient and thermal conductivity within one thermoelectric material.

Xiaohua Ji; Jian He; Zhe Su; Nick Gothard; Terry M. Tritt

2008-01-01T23:59:59.000Z

217

NMR Studies of Cu/zeolite SCR Catalysts Hydrothermally Aged with Urea  

SciTech Connect

The effects of hydrothermal aging of Cu/zeolite urea-SCR catalysts on their reactivity and material properties was assessed by performance tests and multiple characterization techniques that included 27Al NMR and XRD. Three aging protocols were used that consisted of varying temperature during hydrothermal aging with or without exposure to aqueous urea solution. Differences in behavior were even found for samples hydrothermally aged immediately following exposure to the urea solution or if the sample was dried overnight before hydrothermal aging. The combination of urea and high temperature exposure increased the deactivation of Cu/zeolite SCR catalysts beyond that observed by hydrothermal aging alone, with an immediate high temperature exposure following wetting of the catalyst core with aqueous urea causing the most significant deterioration in performance. The impact of urea on SCR catalyst durability was also found to increase with the aging temperature. NMR analysis suggested that aging with urea resulted in relatively more dealumination of the zeolite for the SCR catalysts in this study.

Cheng, Yisun; Hoard, John; Lambert, Christine; Kwak, Ja Hun; Peden, Charles HF

2008-06-26T23:59:59.000Z

218

A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrothermal  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrothermal Calcites, Long Valley Caldera, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrothermal Calcites, Long Valley Caldera, California Details Activities (3) Areas (1) Regions (0) Abstract: The 87Sr/86Sr values of thermal waters and hydrothermal calcites of the Long Valley caldera geothermal system are more radiogenic than those of young intracaldera volcanic rocks. Five thermal waters display 87Sr/86Sr

219

Sources Of Chloride In Hydrothermal Fluids From The Valles Caldera, New  

Open Energy Info (EERE)

Sources Of Chloride In Hydrothermal Fluids From The Valles Caldera, New Sources Of Chloride In Hydrothermal Fluids From The Valles Caldera, New Mexico- A 36Cl Study Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Sources Of Chloride In Hydrothermal Fluids From The Valles Caldera, New Mexico- A 36Cl Study Abstract The Valles caldera in New Mexico hosts a high-temperature geothermal system, which is manifested in a number of hot springs discharging in and around the caldera. In order to determine the fluid pathways and the origin of chloride in this system, we measured 36Cl/Cl ratios in waters from high-temperature drill holes and from surface springs in this region. The waters fall into two general categories: recent meteoric water samples with low Cl- concentrations (< 10 mg/L) and relatively high 36Cl/Cl ratios

220

Process Design and Economics for the Conversion of Algal Biomass to Hydrocarbons: Whole Algae Hydrothermal Liquefaction and Upgrading  

SciTech Connect

This report provides a preliminary analysis of the costs associated with converting whole wet algal biomass into primarily diesel fuel. Hydrothermal liquefaction converts the whole algae into an oil that is then hydrotreated and distilled. The secondary aqueous product containing significant organic material is converted to a medium btu gas via catalytic hydrothermal gasification.

Jones, Susanne B.; Zhu, Yunhua; Anderson, Daniel B.; Hallen, Richard T.; Elliott, Douglas C.; Schmidt, Andrew J.; Albrecht, Karl O.; Hart, Todd R.; Butcher, Mark G.; Drennan, Corinne; Snowden-Swan, Lesley J.; Davis, Ryan; Kinchin, Christopher

2014-03-20T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" 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.


221

Hydrothermal Growth of Mesoporous SBA-15 Silica in the Presence of PVP-Stabilized Pt Nanoparticles: Synthesis,  

E-Print Network (OSTI)

Hydrothermal Growth of Mesoporous SBA-15 Silica in the Presence of PVP-Stabilized Pt Nanoparticles hydrothermal synthesis. Characterization of the Pt/SBA-15 catalysts suggests that Pt particles are located are responsible for ethane decomposition to surface carbon. The ability to design catalytic structures

Yang, Peidong

222

Hydrothermal Synthesis of Pure r-Phase Manganese(II) Sulfide without the Use of Organic Reagents  

E-Print Network (OSTI)

Articles Hydrothermal Synthesis of Pure r-Phase Manganese(II) Sulfide without the Use of Organic for finding carbon-free synthesis methods for metal sulfides. The decomposition of organosulfur, such as manganese sulfide (MnS). Here we report a hydrothermal synthesis method for the formation of MnS in which

223

PII S0016-7037(01)00878-X Effect of fluidsediment reaction on hydrothermal fluxes of major elements,  

E-Print Network (OSTI)

PII S0016-7037(01)00878-X Effect of fluid­sediment reaction on hydrothermal fluxes of major of the Juan de Fuca Ridge, reaction between upwelling basement fluid and sediment alters hydrothermal fluxes Fe(III)-(hydr)oxide, and precipitation of calcite, carbonate fluorapatite, and amorphous Fe

Fisher, Andrew

224

Anaerobic Respiration on Tellurate and Other Metalloids in Bacteria from Hydrothermal Vent Fields in the Eastern Pacific Ocean  

Science Journals Connector (OSTI)

...Hydrothermal Vent Fields in the Eastern Pacific Ocean Julius T. Csotonyi 1 Erko Stackebrandt...hydrothermal vent fields in the eastern Pacific Ocean. In 2003, samples of sulfide...the Juan de Fuca Ridge in the Pacific Ocean. Appl. Environ. Microbiol...

Julius T. Csotonyi; Erko Stackebrandt; Vladimir Yurkov

2006-07-01T23:59:59.000Z

225

INFLUENCE OF D.I.C HYDROTHERMAL PROCESS CONDITIONS ON THE GELATINIZATION PROPERTIES OF STANDARD MAIZE STARCH  

E-Print Network (OSTI)

INFLUENCE OF D.I.C HYDROTHERMAL PROCESS CONDITIONS ON THE GELATINIZATION PROPERTIES OF STANDARD ABSTRACT Standard maize starch was hydrothermally treated at residual moisture content (~12 %) by Instantaneous Controlled Pressure Drop for various pressure levels and processing times. In order to examine

Paris-Sud XI, Université de

226

Synthesis and Characterization of Ag-or Sb-Doped ZnO Nanorods by a Facile Hydrothermal Route  

E-Print Network (OSTI)

Synthesis and Characterization of Ag- or Sb-Doped ZnO Nanorods by a Facile Hydrothermal Route Oleg Stefan Cel Mare BouleVard, MD-2004 Chisinau, Republic of MoldoVa, AdVanced Materials Processing ZnO nanorods doped with Ag and Sb have been synthesized by a facile hydrothermal technique. Crystal

Kik, Pieter

227

J. Phys. III France 6 (1996) 843-852 JULY 1996, PAGE 843 Dielectric Properties of Hydrothermal Nickel-Zinc Ferrites  

E-Print Network (OSTI)

knowledge, no study of the dielectric behavior of ferrites obtained by hydrothermal process has been by hydrothermal process and sintered these powders without any sinter- ing aids. A detailed investigationJ. Phys. III France 6 (1996) 843-852 JULY 1996, PAGE 843 Dielectric Properties of Hydrothermal

Boyer, Edmond

228

Hydrothermal formation of Clay-Carbonate alteration assemblages in the Nili Fossae region of Mars  

E-Print Network (OSTI)

The Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) has returned observations of the Nili Fossae region indicating the presence of Mg- carbonate in small (carbonate-bearing units. We applied absorption band mapping techniques to investigate a range of possible phyllosilicate and carbonate minerals that could be present in the Nili Fossae region. We also describe a clay-carbonate hydrothermal alteration mineral assemblage in the Archean Warrawoona Group of Western Australia that is a potential Earth analog to the Nili Fossae carbonate-bearing rock units. We discuss the geological and biological implications for hydrothermal processes on Noachian Mars.

Brown, Adrian J; Baldridge, Alice M; Crowley, James K; Bridges, Nathan T; Thomson, Bradley J; Marion, Giles M; Filho, Carlos R de Souza; Bishop, Janice L

2014-01-01T23:59:59.000Z

229

Rheological study of comingled biomass and coal slurries with hydrothermal pretreatment  

SciTech Connect

Gasification of comingled biomass and coal feedstock is an effective means of reducing the net life cycle greenhouse gas emissions in the coal gasification process while maintaining its inherent benefits of abundance and high-energy density. However, feeding a comingled biomass and coal feedstock into a pressurized gasification reactor poses a technical problem. Conventional dry feeding systems, such as lock hoppers and pressurized pneumatic transport, are complex and operationally expensive. A slurry formation of comingled biomass and coal feedstock can be easily fed into the gasification reactor but, in normal conditions, only allows for a small portion of biomass in the mixture. This is a consequence of the hydroscopic and hydrophilic nature of the biomass. The College of Engineering Center for Environmental Research and Technology (CE-CERT) at the University of California, Riverside, has developed a process producing high solid content biomass-water slurry using a hydrothermal pretreatment process. In this paper, the systematic investigation of the rheological properties (e.g., shear rate, shear stress, and viscosity) of coal-water slurries, biomass-water slurries, and comingled biomass and coal-water slurries is reported. The solid particle size distribution in the slurry and the initial solid/water ratio were investigated to determine the impact on shear rate and viscosity. This was determined using a rotational rheometer. The experimental results show that larger particle size offers better pumpability. The presence of a high percentage of biomass in solid form significantly decreases slurry pumpability. It is also shown that the solid loading of the biomass-water slurry can be increased to approximately 35 wt % with viscosity of less than 0.7 Pa.s after the pretreatment process. The solid loading increased to approximately 45 wt % when the biomass is comingled with coal. 18 refs., 7 figs., 3 tabs.

Wei He; Chan S. Park; Joseph M. Norbeck [University of California, Riverside, CA (United States). Bourns College of Engineering Center for Environmental Research and Technology

2009-09-15T23:59:59.000Z

230

Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes  

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

Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes Print Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes Print Despite the considerable amount of iron that enters the oceans from the continents and from hydrothermal vents at mid-ocean ridges on the seafloor, there are large regions of the global ocean where iron availability is so low that it limits life. Oceanographers have long explained this anomaly by assuming that the iron in the sea is primarily incorporated as Fe(III) into inorganic minerals that lack both the mobility to circulate over long distance and bioavailability to sea life as an essential nutrient. Now, a collaboration led by researchers from the Woods Hole Oceanographic Institution has reported that the hydrothermal plumes emerging from the vents actually contain iron in both Fe(II) and Fe(III) oxidation states associated with organic material from nearby flora and fauna. The collaboration suggests that the organic matrices prevent oxidation and precipitation of the Fe(II), perhaps increasing both its circulation through the world's oceans and its bioavailability as a deep-sea nutrient.

231

Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes  

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

Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes Print Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes Print Despite the considerable amount of iron that enters the oceans from the continents and from hydrothermal vents at mid-ocean ridges on the seafloor, there are large regions of the global ocean where iron availability is so low that it limits life. Oceanographers have long explained this anomaly by assuming that the iron in the sea is primarily incorporated as Fe(III) into inorganic minerals that lack both the mobility to circulate over long distance and bioavailability to sea life as an essential nutrient. Now, a collaboration led by researchers from the Woods Hole Oceanographic Institution has reported that the hydrothermal plumes emerging from the vents actually contain iron in both Fe(II) and Fe(III) oxidation states associated with organic material from nearby flora and fauna. The collaboration suggests that the organic matrices prevent oxidation and precipitation of the Fe(II), perhaps increasing both its circulation through the world's oceans and its bioavailability as a deep-sea nutrient.

232

Synthesis of ZrO{sub 2} nanoparticles by hydrothermal treatment  

SciTech Connect

Zirconium oxide (zirconia, ZrO{sub 2}) is the most common material used for electrolyte of solid oxide fuel cells (SOFCs). Zirconia has attracted attention for applications in optical coatings, buffer layers for growing superconductors, thermal-shield, corrosion resistant coatings, ionic conductors, and oxygen sensors, and for potential applications including transparent optical devices and electrochemical capacitor electrodes, fuel cells, catalysts, and advanced ceramics. In this work, zirconia particles were synthesized from ZrCl{sub 4} precursor with hydrothermal treatment in a batch reactor. Hydrothermal treatment may allow obtaining nanoparticles and sintered materials with controlled chemical and structural characteristics. Hydrothermal treatment was carried out at temperatures of 150 200C with precursor concentration of 0.1 0.5 M. Zirconia particles obtained from this treatment were analyzed by using SEM, PSD and XRD to characterize the morphology, particle size distribution, and crystallinity, respectively. Based on the analysis, the size of zirconia particles were around 200 nm and it became smaller with decreasing precursor concentration. The increasing temperature caused the particles formed having uniform size. Zirconia particles formed by hydrothermal treatment were monoclinic, tetragonal and cubic crystal.

Machmudah, Siti, E-mail: machmudah@chem-eng.its.ac.id; Widiyastuti, W., E-mail: machmudah@chem-eng.its.ac.id; Prastuti, Okky Putri, E-mail: machmudah@chem-eng.its.ac.id; Nurtono, Tantular, E-mail: machmudah@chem-eng.its.ac.id; Winardi, Sugeng, E-mail: machmudah@chem-eng.its.ac.id [Chemical Engineering Department, Sepuluh Nopember Institute of Technology, Surabaya 60111 (Indonesia); Wahyudiono,; Kanda, Hideki; Goto, Motonobu [Department of Chemical Engineering, Nagoya University, Nagoya 464-8603 (Japan)

2014-02-24T23:59:59.000Z

233

Hydrothermal treatment of MSWI bottom ash forming acid-resistant material  

SciTech Connect

To recycle municipal solid waste incinerator (MSWI) bottom ash, synthesis of hydrothermal minerals from bottom ash was performed to stabilize heavy metals. MSWI bottom ash was mixed with SiO{sub 2}, Al(OH){sub 3}, and Mg(OH){sub 2} so its chemical composition was similar to that of hydrothermal clay minerals. These solid specimens were mixed with water at a liquid/solid ratio of 5. The reaction temperature was 200 deg. C, and reactions were performed for 24-240 h. Generation of kaolinite/smectite mixed-layer clay mineral was found in the samples after the reaction of the mixture of bottom ash, SiO{sub 2}, and Mg(OH){sub 2}. Calcium silicate hydrate minerals such as tobermorite and xonotlite were also generated. X-ray powder diffraction suggested the presence of amorphous materials. Leaching tests at various pHs revealed that the concentration of heavy metals in the leachates from MSWI bottom ash hydrothermally treated with SiO{sub 2} and Mg(OH){sub 2} was lower than that in leachates from non-treated bottom ash, especially under acid conditions. Hydrothermal treatment with modification of chemical composition may have potential for the recycling of MSWI bottom ash.

Etoh, Jiro [Department of Urban and Environmental Engineering, Faculty of Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395 (Japan)], E-mail: etoh@doc.kyushu-u.ac.jp; Kawagoe, Takeshi [Department of Earth System Engineering, Graduate School of Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395 (Japan); Shimaoka, Takayuki [Department of Urban and Environmental Engineering, Faculty of Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395 (Japan); Watanabe, Koichiro [Department of Earth System Engineering, Faculty of Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395 (Japan)

2009-03-15T23:59:59.000Z

234

Silica Precipitation in Fractures and the Evolution of Permeability in Hydrothermal Upflow Zones  

Science Journals Connector (OSTI)

...MASS-TRANSPORT AND FLUID-ROCK INTERACTION IN A...FRACTURED HOT DRY ROCK - REPLY, JOURNAL...WALDER, J, POROSITY REDUCTION AND CRUSTAL...the evolution of permeability in hydrothermal...expansion of the country rock may be insufficient...permeability precipitation reservoir properties rock...

Robert P. Lowell; Philippe Van Cappellen; Leonid N. Germanovich

1993-04-09T23:59:59.000Z

235

Z .Marine Chemistry 64 1999 229252 The chemical composition of shallow-water hydrothermal fluids  

E-Print Network (OSTI)

; accepted 1 September 1998 Abstract Z .Submarine, hydrothermal venting occurs at Tutum Bay in shallow 5­10 m in Tutum Bay, Ambitle Island, Papua New Guinea and their effect on ambient seawater Thomas Pichler a,) , Jan Veizer a,b , Gwendy E.M. Hall c a Ottawa-Carleton Geoscience Centre, Uni?ersity of Ottawa, Ottawa

Pichler, Thomas

236

Anaerobic methane oxidation in metalliferous hydrothermal sediments: influence on carbon flux and  

E-Print Network (OSTI)

Anaerobic methane oxidation in metalliferous hydrothermal sediments: influence on carbon flux significant sink that regulates methane flux from sediments into the oceans and atmosphere. Here we examine mesophilic to thermophilic AOM in hydro- thermal sediments recovered from the Middle Valley vent field

Girguis, Peter R.

237

John G. Hinchey Ke iko H. Hattori Magmatic mineralization and hydrothermal enrichment of the High Grade  

E-Print Network (OSTI)

ARTICLE John G. Hinchey ? Ke´ iko H. Hattori Magmatic mineralization and hydrothermal enrichment; millerite + siegenite ± chalcopyrite ± pyrite co-existing with hornblende + plagioclase ± quartz ± carbonate, and pyrite ± chalcopyrite with chlorite + actinolite ± albite ± quartz ± carbonate. The ore is high in Pd

238

Subtidal Gastropods Consume Sulfur-Oxidizing Bacteria: Evidence from Coastal Hydrothermal Vents  

Science Journals Connector (OSTI)

...primarily hydrogen sulfide (H2S) (1). Even though hydro-thermal vents also occur in shallow coastal waters (2), reports of...bright-field optics, and (ii) their failure to stain with Sudan black B, indicating that they were not poly-, -hydroxybu-terate...

JEFFREY L. STEIN

1984-02-17T23:59:59.000Z

239

Layered Hydrothermal Barite-Sulfide Mound Field, East Diamante Caldera, Mariana Volcanic Arc  

Science Journals Connector (OSTI)

...For samples with high Ba, Zn, Cu, or...total S by induction furnace/infrared spectrophotometry...elemental S by leach/furnace/IR. Duplicate...an index of the efficiency of a reduced set...in a well-type, high-resolution gammaray...Low-temperature, focused venting of hydrothermal fluids...

James R. Hein; Cornel E.J. de Ronde; Randolph A. Koski; Robert G. Ditchburn; Kira Mizell; Yoshihiko Tamura; Robert J. Stern; Tracey A. Conrad; Osamu Ishizuka; Matthew I. Leybourne

240

Hydrothermal synthesis, structure and thermal stability of diamine templated layered uranyl-vanadates  

E-Print Network (OSTI)

crystal structure and thermal behavior are reported herein. Experimental Synthesis Uranyl nitrate (UO2(NO31 Hydrothermal synthesis, structure and thermal stability of diamine templated layered uranyl. Murielle.rivenet@ensc-lille.fr Running Title : Diamine templated layered uranyl-vanadates. Figure for table

Paris-Sud XI, Université de

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241

Dynamics and storage of brine in mid-ocean ridge hydrothermal systems  

E-Print Network (OSTI)

Dynamics and storage of brine in mid-ocean ridge hydrothermal systems Fabrice J. Fontaine1 substantially different from seawater as a result of phase separation and segregation of the resulting vapor below seawater for over a decade, which raises important questions concerning the fate of brines

Wilcock, William

242

A mixed-valence copper coordination polymer generated by hydrothermal metal/ligand redox reactions  

E-Print Network (OSTI)

A mixed-valence copper coordination polymer generated by hydrothermal metal/ligand redox reactions A novel coordination polymer of mixed-valence copper(I,II) with 4,4A-bipyridine and in situ oxidized and crystallographically char- acterized to be a laminated structure via weak copper(II)­ oxygen interactions. Extended

Li, Jing

243

Ahuachapan Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Activities (0) 10 References Area Overview Geothermal Area Profile Location: El Salvador Exploration Region: Central American Volcanic Arc Chain GEA Development Phase: Phase...

244

Berln Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Activities (0) 10 References Area Overview Geothermal Area Profile Location: El Salvador Exploration Region: Central American Volcanic Arc Chain GEA Development Phase: Phase...

245

Evaluation of Emerging Technology for Geothermal Drilling and...  

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

Technology for Geothermal Drilling and Logging Applications Technology Development and Field Trials of EGS Drilling Systems GEA Geothermal Summit Presentation Lauren Boyd...

246

Las Tres Virgenes Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

(0) 10 References Area Overview Geothermal Area Profile Location: Baja California Sur, Mexico Exploration Region: Baja Peninsula GEA Development Phase: Coordinates:...

247

Los Humeros Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

(0) 10 References Area Overview Geothermal Area Profile Location: Chignautla, Puebla, Mexico Exploration Region: Transmexican Volcanic Belt GEA Development Phase: Phase IV -...

248

Fukushima Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Activities (0) 10 References Area Overview Geothermal Area Profile Location: Fukushima, Japan Exploration Region: Northeast Honshu Arc GEA Development Phase: Coordinates:...

249

Ecological and Geochemical Aspects of Terrestrial Hydrothermal Systems  

E-Print Network (OSTI)

exploitation of nearby geothermal energy resources. Dixieexploitation of nearby geothermal energy resources. In Napachange (USFWS, 2009), geothermal energy development (BLM,

Forrest, Matthew James

250

Geochemistry of hydrothermal fluids from Axial Seamount Hydrothermal Emissions Study vent field, Juan de Fuca Ridge: Subseafloor boiling and subsequent fluid-rock interaction  

SciTech Connect

Hydrothermal fluids collected from the ASHES vent field in 1986, 1987, and 1988 exhibit a very wide range of chemical composition over a small area ({approximately} 60 m in diameter). Compositions range from a 300C, gas-enriched (285 mmol/kg CO{sub 2}), low-chlorinity ({approximately} 33% of seawater) fluid to a 328C, relatively gas-depleted (50 mmol/kg CO{sub 2}), high-chlorinity ({approximately} 116% of seawater) fluid. The entire range of measured compositions at ASHES is best explained by a single hydrothermal fluid undergoing phase separation while rising through the ocean crust, followed by partial segregation of the vapor and brine phases. Other mechanisms proposed to produce chlorinity variations in hydrothermal fluids (precipitation/dissolution of a chloride-bearing mineral or crustal hydration) cannot produce the covariation of chlorinity and gas content observed at ASHES. There is good argument of the measured fluid compositions generated by a simple model of phase separation, in which gases are partitioned according to Henry's law and all salt remains in the liquid phase. Significant enrichments in silica, lithium and boron in the low-chlorinity fluids over levels predicted by the model are attributed to fluid-rock interaction in the upflow zone. Depletions in iron and calcium suggest that these elements have been removed by iron-sulfide and anhydrite precipitation at some time in the history of the low-chlorinity fluids. The distribution of low- and high-chlorinity venting is consistent with mechanisms of phase segregation based on differential buoyancy or relative permeability. The relatively shallow depth of the seafloor (1,540 m) and the observed chemistry of ASHES fluids are consistent with phase separation in the sub-critical or near-critical region.

Butterfield, D.A.; McDuff, R.E.; Lilley, M.D. (Univ. of Washington, Seattle (United States)); Massoth, G.J. (NOAA, Seattle, WA (United States)); Lupton, J.E. (Univ. of California, Santa Barbara (United States))

1990-08-10T23:59:59.000Z

251

Hydrothermal synthesis of MgAl layered double hydroxides (LDHs) from natural brucite and Al(OH)3  

Science Journals Connector (OSTI)

By using natural brucite and Al(OH)3 as the starting materials, the MgAl layered double hydroxides (MgAlCO3-LDHs) have been successfully synthesized via a simple hydrothermal strategy. The effect of hydrothermal synthesis temperature and reaction time on the crystal structure, grains size and Mg/Al molar ratios of MgAlCO3-LDHs were investigated. The results showed that the cell parameters and Mg/Al molar ratios of the MgAlCO3-LDHs increase when the hydrothermal reaction temperature increases from 140C to 180C. The size of crystal grain parallel to the direction of the layer D110 is roughly constant, while the size of crystal grain in the vertical direction of the layer D003 increases and D110/D003 decreases with the increment of hydrothermal reaction temperature.

Libing Liao; Ning Zhao; Zhiguo Xia

2012-01-01T23:59:59.000Z

252

Hydrothermal synthesized micro/nano-sized pyrite used as cathode material to improve the electrochemical performance of thermal battery  

Science Journals Connector (OSTI)

In this paper, single-phase pyrite with different particle sizes is prepared by hydrothermal method with the reactants of Na2S, S, and FeSO4.... Compared with natural pyrite powder, synthesized pyrite nanocubes w...

Zhaotang Yang; Xiaojiang Liu; Xiuli Feng; Yixiu Cui

2014-10-01T23:59:59.000Z

253

Hydrothermal alteration of late-to post-tectonic Lyon Mountain Granitic Gneiss, Adirondack Mountains, New York: Origin of  

E-Print Network (OSTI)

that they represent partially crystallized granitic anatectites depleted in alkali elements by acidic hydrothermal- or Olympic Dam-type characterized by elevated concentrations of rare earth elements (REE), uranium, gold

Soja, Constance M.

254

Spatial and temporal population genetics at deep-sea hydrothermal vents along the East Pacific Rise and Galpagos Rift  

E-Print Network (OSTI)

Ecological processes at deep-sea hydrothermal vents on fast-spreading mid-ocean ridges are punctuated by frequent physical disturbance. Larval dispersal among disjunct vent sites facilitates the persistence of sessile ...

Fusaro, Abigail Jean

2008-01-01T23:59:59.000Z

255

Biotic and abiotic interactions of deep-sea hydrothermal vent-endemic fish on the East Pacific Rise  

E-Print Network (OSTI)

A study of the ecology of fish endemic to hydrothermal vents on the East Pacific Rise was undertaken utilizing a variety of techniques, focusing on the bythitid Thermichthys hollisi. Stable isotope and gut content analyses ...

Buckman, Kate Lynn

2009-01-01T23:59:59.000Z

256

Development Development  

E-Print Network (OSTI)

Programme 2007 - 2010 The aim of the Timber Development Programme (TDP) is "to contribute to the sustainable development to underpin sustainable forest management and support economic growth and employment acrossDevelopment Timber Development Programme 2007 - 2010 #12;2 | Timber Development Programme 2007

257

Integrated hydrothermal model for proposed deep crustal borehole on Texas Gulf Coast - origins of geopressured brines and lead-zinc, uranium, hydrocarbon, and cap-rock deposits  

SciTech Connect

Sediment accumulation over Jurassic salt in the Gulf coast has resulted in an interrelated sequential development of salt domes and diagenetic, hydrothermal, and hydrocarbon generation zones. Primary anhydrites within the salt with high /sup 87/Sr//sup 86/Sr ratios suggest early generation of underlying fluids rich in radiogenic strontium that were incorporated in the salt during its diapiric rise to the surface. Subsequently, late-stage, hydrocarbon-rich, saline hydrothermal fluids migrated up the margins of the salt domes, and caused precipitation of several generation of calcite cements, followed by uranium and Mississippi Valley-type lead-zinc-barite deposits near or at salt dome rims. Present fluids in the lower Frio (deeper than 4270 m or 14,000 ft) at the Pleasant Bayou geopressured-geothermal test well (Brazoria County, Texas) are highly saline and enriched in iron, manganese, lead, zinc, and carbon dioxide, and are saturated in methane. These lower Frio waters must have migrated into the area recently because they are not in isotopic equilibrium with diagenetic albite cements formed at temperatures greater than 120/sup 0/C (248/sup 0/F) less than 7.5 million years ago. Isotopic and geochemical data suggest that the fluids trapped by geopressure in the lower Frio at the Pleasant Bayou well are the parent fluids of those causing salt dome cap-rock mineralization.

Light, M.P.R.; Posey, H.H.

1986-05-01T23:59:59.000Z

258

The Effects of Hydrothermal Agingon a Commercial Cu SCR Catalyst  

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

A r - - - NH 3 adsorption and desorption * All SCR models developed in MatlabSimulink using a variable step solver (ode23tb) * First order Euler integration in...

259

Assessing a Hydrothermal Liquefaction Process Using Biomass Feedstocks.  

E-Print Network (OSTI)

??The need to reduce the United States dependence on foreign oil has never been greater. In the past decade emphasis has been placed on developing (more)

Midgett, Jason S.

2008-01-01T23:59:59.000Z

260

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

Higman, C. and M. Burgt, Gasification . 2003: Elsevier/Gulfand N.P. Cheremisinoff, Gasification technologies: a primerbiomass (part 3): gasification technologies. Bioresource

He, Wei

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" 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

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

for energy. Biomass and Bioenergy, 2003. 25 (2): p. 119-133.resources. Biomass and Bioenergy, 2004. 27 (6): p. 613-620.the U.S.A. Biomass and Bioenergy, 2009. 33 (4): p. 628-634.

He, Wei

2011-01-01T23:59:59.000Z

262

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

Bridgwater, A. , Thermal biomass conversion and utilization:and bed materials. Biomass Conversion and Biorefinery, 2011.in Thermochemical Biomass Conversion . 2008, Blackwell

He, Wei

2011-01-01T23:59:59.000Z

263

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

Reactor for the Study of Biomass Pyrolysis Chemistry at Highmineral matter on biomass pyrolysis characteristics. Fuel,Puigjaner, Kinetics of Biomass Pyrolysis: ? a Reformulated

He, Wei

2011-01-01T23:59:59.000Z

264

New developments in the application of Pontryagin's Principle for the hydrothermal optimization  

Science Journals Connector (OSTI)

......Optimal Control Applications in Electric Power Systems. New York...Optimal Economic Operation of Electric Power Systems. New York...ds , (t) being an interior arc of the extremal, with (ti...function of the rate of water discharge and the turbined volume by......

L. Bayn; J. M. Grau; M. M. Ruiz; P. M. Surez

2005-12-01T23:59:59.000Z

265

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

Tech. Carrier Torrefaction Biomass energy 200C -300C, a)ability to boost biomass energy density thru hydrothermalcomponents of biomass and stored energy of biomass [8-10].

He, Wei

2011-01-01T23:59:59.000Z

266

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

reserves [26, 27]. Natural gas reserves are concentrated inreserve [17] and 2) the irreversible release of Greenhouse Gas (reserves [28]. Coal is relatively widely distributed compared with petroleum and natural gas [

He, Wei

2011-01-01T23:59:59.000Z

267

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

consumption and total energy consumption regarding wood159 Fig 5.20 Total energy consumption of 400 tons/day HTPindicate that the total energy consumption of the HTP plant

He, Wei

2011-01-01T23:59:59.000Z

268

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

of Char. Industrial & Engineering Chemistry Research, 2003.Jerry. Industrial & Engineering Chemistry Research, 2000.Industrial & Engineering Chemistry Research, 2005. 44 (13):

He, Wei

2011-01-01T23:59:59.000Z

269

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

at a dual fluidised bed gasifier: Impacts of operationsources using Sasol-Lurgi gasifiers. International Journalscale Sasol-Lurgi FBDB gasifier. Fuel, 2008. 87 (13-14): p.

He, Wei

2011-01-01T23:59:59.000Z

270

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

syngas (carbon monoxide and hydrogen) is produced instead of carbon dioxide and water as is in the combustion

He, Wei

2011-01-01T23:59:59.000Z

271

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

and M. Coertzen, Syngas production from South African coalExperimental study on syngas production by co- gasificationuse as criteria for syngas production where a calculation of

He, Wei

2011-01-01T23:59:59.000Z

272

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

The handbook of biomass combustion and co-firing . 2008:a lower heat of combustion for biomass [164]. Consequently,Miles, Combustion properties of biomass. Fuel Processing

He, Wei

2011-01-01T23:59:59.000Z

273

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

S. , et al. , Rheological behaviour of coal-water mixtures.1. Effects of coal type, loading and particle size. Fuel,Rheological behaviour of coal-water mixtures. 2. Effect of

He, Wei

2011-01-01T23:59:59.000Z

274

Synthesis, Characterization, and Formation Mechanism of Copper Sulfide-Core/Carbon-Sheath Cables by a Simple Hydrothermal Route  

Science Journals Connector (OSTI)

Synthesis, Characterization, and Formation Mechanism of Copper Sulfide-Core/Carbon-Sheath Cables by a Simple Hydrothermal Route ... Copper sulfide-core/carbon-shell cables and spheres have been prepared by a simple hydrothermal method. ... The obtained CuS/C cables and spheres were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman, Fourier transform infrared spectroscopy, photoluminescence, and UV?vis-NIR spectrum analysis. ...

Guang-Yi Chen; Bin Deng; Guo-Bin Cai; Wen-Fei Dong; Wan-Xi Zhang; An-Wu Xu

2008-05-29T23:59:59.000Z

275

Sonochemical and hydrothermal synthesis of PbTe nanostructures with the aid of a novel capping agent  

SciTech Connect

Graphical abstract: - Highlights: PbTe nanostructures were prepared with the aid of Schiff-base compound. Sonochemical and hydrothermal methods were employed to fabricate PbTe nanostrucrues. The effect of preparation parameters on the morphology of PbTe was investigated. - Abstract: In this work, a new Schiff-base compound derived from 1,8-diamino-3,6-dioxaoctane and 2-hydroxy-1-naphthaldehyde marked as (2-HyNa)-(DaDo) was synthesized, characterized, and then used as capping agent for the preparation of PbTe nanostructures. To fabricate PbTe nanostructures, two different synthesis methods; hydrothermal and sonochemical routes, were applied. To further investigate, the effect of preparation parameters like reaction time and temperature in hydrothermal synthesis and sonication time in the presence of ultrasound irradiation on the morphology and purity of the final products was tested. The products were analyzed with the aid of SEM, TEM, XRD, FT-IR, and EDS. Based on the obtained results, it was found that pure cubic phased PbTe nanostructures have been obtained by hydrothermal and sonochemical approaches. Besides, SEM images showed that cubic-like and rod-like PbTe nanostructures have been formed by hydrothermal and sonochemical methods, respectively. Sonochemical synthesis of PbTe nanostructures was favorable, because the synthesis time of sonochemical method was shorter than that of hydrothermal method.

Fard-Fini, Shahla Ahmadian [Department of Chemistry, Payame Noor University, P.O. Box 19395-3697, Tehran, Islamic Republic of Iran (Iran, Islamic Republic of); Salavati-Niasari, Masoud, E-mail: salavati@kashanu.ac.ir [Department of Inorganic Chemistry, Faculty of Chemistry, University of Kashan, P.O. Box 87317-51167, Kashan, Islamic Republic of Iran (Iran, Islamic Republic of); Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Islamic Republic of Iran (Iran, Islamic Republic of); Mohandes, Fatemeh [Department of Inorganic Chemistry, Faculty of Chemistry, University of Kashan, P.O. Box 87317-51167, Kashan, Islamic Republic of Iran (Iran, Islamic Republic of)

2013-10-15T23:59:59.000Z

276

Oxygen Isotope Evidence For Past And Present Hydrothermal Regimes Of Long  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Oxygen Isotope Evidence For Past And Present Hydrothermal Regimes Of Long Valley Caldera, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Oxygen Isotope Evidence For Past And Present Hydrothermal Regimes Of Long Valley Caldera, California Details Activities (3) Areas (1) Regions (0) Abstract: Whole-rock oxygen isotope compositions of cores and cuttings from Long Valley exploration wells show that the Bishop Tuff has been an important reservoir for both fossil and active geothermal systems within the caldera. The deep Clay Pit-1 and Mammoth-1 wells on the resurgent dome

277

Chapter 11 - Hydrothermal Upgradation of Algae into Value-added Hydrocarbons  

Science Journals Connector (OSTI)

Abstract Energy security, increasing oil prices, fossil resource depletion, and climate change are some of the greatest challenges faced by mankind at present. Third-generation biofuel feedstock and micro-and macroalgae have many advantages over the first and second generations of biofuels. In addition, defatted algae can also be used as a feedstock for production of hydrocarbons. Thermochemical methods are more efficient than any other routes for conversion of algae. Among thermochemical methods, hydrothermal upgradation is the most promising because it can process feedstock such as algae with very high moisture content. Various reactors, catalysts, and operating parameters have been tested to valorize algae by liquefaction and gasification, and promising results have been obtained. Breakthroughs in reactors and/or catalysts for hydrothermal upgradation, proper utilization of the side products obtained, and integration with various other methods to extract high-value hydrocarbons/products from algae would help make algal biorefinery economical and sustainable.

Rawel Singh; Thallada Bhaskar; Bhavya Balagurumurthy

2014-01-01T23:59:59.000Z

278

Numerical-Model Investigation of the Hydrothermal Regime of a Straight-Through Shallow Cooling Pond  

SciTech Connect

A mathematic model based on solution of hydrodynamics and heat-transfer equations by the finite-element method is constructed to predict the hydrothermal regime of a straight-through shallow cooling pond, which provides cooling circulating water to a repository of spent nuclear fuel. Numerical experiments made it possible to evaluate the influence exerted by wind conditions and flow rate of water in the river on the temperature of the circulating water.

Sokolov, A. S. [JSC 'VNIIG im. B. E. Vedeneeva' (Russian Federation)] [JSC 'VNIIG im. B. E. Vedeneeva' (Russian Federation)

2013-11-15T23:59:59.000Z

279

Hydrothermal Gasification of Waste Biomass: Process Design and Life Cycle Asessment  

Science Journals Connector (OSTI)

Several scenarios are constructed for different Swiss biomass feedstocks and different scales depending on logistical choices: large-scale (155 MWSNG) and small-scale (5.2 MWSNG) scenarios for a manure feedstock and one scenario (35.6 MWSNG) for a wood feedstock. ... In conclusion, the simulation of the catalytic hydrothermal gasification of different biomass feedstocks allowed the design of industrial-scale process configurations. ...

Jeremy S. Luterbacher; Morgan Frling; Frdric Vogel; Franois Marchal; Jefferson W. Tester

2009-01-29T23:59:59.000Z

280

Effects of Hydrothermal Aging on NH3-SCR reaction over Cu/zeolites  

SciTech Connect

The effects of hydrothermal treatment on model Cu/zeolite catalysts were investigated to better understand the nature of Cu species for the selective catalytic reduction of NO{sub x} by NH{sub 3}. After hydrothermal aging at 800 C for 16 h, the NO{sub x} reduction performance of Cu-ZSM-5 and Cu-beta were significantly reduced at low temperatures, while that of Cu-SSZ-13 was not affected. When the zeolite framework aluminum species were probed using solid state {sup 27}Al-NMR, significant reduction in the intensities of the tetrahedral aluminum peak was observed for Cu-ZSM-5 and Cu-beta, although no increase in the intensities of the octahedral aluminum peak was observed. When the redox behavior of Cu species was examined using H{sub 2}-TPR, it was found that Cu{sup 2+} could be reduced to Cu{sup +} and to Cu{sup 0} fir Cu-ZSM-5 and Cu-beta catalysts, while Cu{sup 2+} could be reduced to Cu{sup +} only for Cu-SSZ-13. After hydrothermal aging, CuO and Cu-aluminate species were found to form in Cu-ZSM-5 and Cu-beta, while little changes were observed for Cu-SSZ-13.

Kwak, Ja Hun; Tran, Diana N.; Burton, Sarah D.; Szanyi, Janos; Lee, Jong H.; Peden, Charles HF

2012-02-06T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" 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

Comparative assessment of five potential sites for hydrothermal-magma systems: energy transport  

SciTech Connect

A comparative assessment of five sites is being prepared as part of a Continental Scientific Drilling Program (CSDP) review of thermal regimes for the purpose of scoping areas for future research and drilling activities. This background report: discusses the various energy transport processes likely to be encountered in a hydrothermal-magma system, reviews related literature, discusses research and field data needs, and reviews the sites from an energy transport viewpoint. At least three major zones exist in the magma-hydrothermal transport system: the magma zone, the hydrothermal zone, and the transition zone between the two. Major energy transport questions relate to the nature and existence of these zones and their evolution with time. Additional energy transport questions are concerned with the possible existence of critical state and super-critical state permeable convection in deep geothermal systems. A review of thermal transport models emphasizes the fact that present transport models and computational techniques far outweigh the scarcity and quality of deep field data.

Hardee, H.C.

1980-09-01T23:59:59.000Z

282

Near-Infrared Spectroscopic Investigation of the Hydrothermal Degradation Mechanism of Wood as an Analogue of Archaeological Wood. Part II: Hardwood  

Science Journals Connector (OSTI)

Near-infrared (NIR) spectroscopy and chemometrics were applied to analyze the degradation mechanism of hardwood following hydrothermal treatment. NIR spectra, chemical composition,...

Inagaki, Tetsuya; Mitsui, Katsuya; Tsuchikawa, Satoru

2009-01-01T23:59:59.000Z

283

Geothermal materials development  

SciTech Connect

Advances in the development of new materials, the commercial availabilities of which are essential for the attainment of Hydrothermal Category Level 1 and 2 Objectives, continue to be made in the Geothermal Materials Development Project. Many successes have already been accrued and the results transferred to industry. In FY 1990, the R D efforts were focused on reducing well drilling and completion costs and on mitigating corrosion in well casing. Activities on lost circulation control materials, CO{sub 2}- resistant lightweight cements, and thermally conductive corrosion and scale-resistant protective liner systems have reached the final development stages, and cost-shared field tests are planned for the FY 1991--1992 time frame. Technology transfer efforts on high temperature elastomers for use in drilling tools are continuing under Geothermal Drilling Organization (GDO) sponsorship.

Kukacka, L.E.

1991-02-01T23:59:59.000Z

284

Hydrothermal alteration in research drill hole Y-2, Lower Geyser Basin, Yellowstone National Park, Wyoming  

SciTech Connect

Y-2, a US Geological Survey research diamond-drill hole in Lower Geyser Basin, Yellowstone National Park, was drilled to a depth of 157.4 meters. The hole penetrated interbedded siliceous sinter and travertine to 10.2 m, glacial sediments of the Pinedale Glaciation interlayered with pumiceous tuff from 10.2 to 31.7 m, and rhyolitic lavas of the Elephant Back flow of the Central Plateau Member and the Mallard Lake Member of the Pleistocene Plateau Rhyolite from 31.7 to 157.4 m. Hydrothermal alteration is pervasive in most of the nearly continuous drill core. Rhyolitic glass has been extensively altered to clay and zeolite minerals (intermediate heulandite, clinoptilolite, mordenite, montmorillonite, mixed-layer illite-montmorillonite, and illite) in addition to quartz and adularia. Numerous veins, vugs, and fractures in the core contain these and other minerals: silica minerals (opal, ..beta..-cristobalite, ..cap alpha..-cristobalite, and chalcedony), zeolites (analcime, wairakite, dachiardite, laumontite, and yugawaralite), carbonates (calcite and siderite), clay (kaolinite and chlorite), oxides (hematite, goethite, manganite, cryptomelane, pyrolusite, and groutite), and sulfides (pyrhotite and pyrite) along with minor aegirine, fluorite, truscottite, and portlandite. Interbedded travertine and siliceous sinter in the upper part of the drill core indicate that two distinct types of thermal water are responsible for precipitation of the surficial deposits, and further that the water regime has alternated between the two thermal waters more than once since the end of the Pinedale Glaciation (approx. 10,000 years B.P.). Alternation of zones of calcium-rich and sodium- and potassium-rich hydrothermal minerals also suggests that the calcium-rich and sodium- and potassium-rich hydrothermal minerals also suggests that the water chemistry in this drill hole varies with depth.

Bargar, K.E.; Beeson, M.H.

1981-05-01T23:59:59.000Z

285

Yttrium and rare earth elements in fluids from various deep-sea hydrothermal systems  

SciTech Connect

Rare earth element (REE) and yttrium (Y) concentrations were measured in fluids collected from deep-sea hydrothermal systems including the Mid-Atlantic Ridge (MAR), i.e., Menez Gwen, Lucky Strike, TAG, and Snakepit; the East Pacific Rise (EPR), i.e., 13{degree}N and 17--19{degree}S; and the Lau (Vai Lili) and Manus (Vienna Woods, PacManus, Desmos) Back-arc Basins (BAB) in the South-West Pacific. In most fluids, Y is trivalent and behaves like Ho. Chondrite normalized Y-REE (Y-REE{sub N}) concentrations of fluids from MAR, EPR, and two BAB sites, i.e., Vai Lili and Vienna Woods, showed common patterns with LREE enrichment and positive Eu anomalies. REE analysis of plagioclase collected at Lucky Strike strengthens the idea that fluid REE contents, are controlled by plagioclase phenocrysts. Other processes, however, such as REE complexation by ligands (Cl{sup {minus}}, F{sup {minus}}, So{sub 4}{sup 2{minus}}), secondary phase precipitation, and phase separation modify REE distributions in deep-sea hydrothermal fluids. REE speciation calculations suggest that aqueous REE are mainly complexed by Cl{sup {minus}} ions in hot acidic fluids from deep-sea hydrothermal systems. REE concentrations in the fluid phases are, therefore, influenced by temperature, pH, and duration of rock-fluid interaction. Unusual Y-REE{sub N} patterns found in the PacManus fluids are characterized by depleted LREE and a positive Eu anomaly. The Demos fluid sample shows a flat Y-REE{sub N} pattern, which increases regularly from LREE to HREE with no Eu anomaly. These Manus Basin fluids also have an unusual major element chemistry with relatively high Mg, So{sub 4}, H{sub 2}S, and F contents, which may be due to the incorporation of magmatic fluids into heated seawater during hydrothermal circulation. REE distribution in PacManus fluids may stem from a subseafloor barite precipitation and the REE in Demos fluids are likely influenced by the presence of sulfate ions.

Douville, E. [Univ. Bretagne Occidentale, Brest (France). Dept. de Chimie] [Univ. Bretagne Occidentale, Brest (France). Dept. de Chimie; [IFREMER Centre de Brest, Plouzane (France); Appriou, P. [Univ. Bretagne Occidentale, Brest (France)] [Univ. Bretagne Occidentale, Brest (France); Bienvenu, P. [CEA Cadarache, Saint Paul Lez Durance (France). Lab. d`Analyses Radiochimiques et Chimiques] [CEA Cadarache, Saint Paul Lez Durance (France). Lab. d`Analyses Radiochimiques et Chimiques; Charlou, J.L.; Donval, J.P.; Fouquet, Y. [IFREMER Centre de Brest, Plouzane (France)] [IFREMER Centre de Brest, Plouzane (France); Gamo, Toshitaka [Univ. of Tokyo, Nakano, Tokyo (Japan). Ocean Research Inst.] [Univ. of Tokyo, Nakano, Tokyo (Japan). Ocean Research Inst.

1999-03-01T23:59:59.000Z

286

Hydrothermal Liquefaction of the Microalgae Phaeodactylum tricornutum: Impact of Reaction Conditions on Product and Elemental Distribution  

Science Journals Connector (OSTI)

In a recent paper reviewing strain selection for HTL, Barreiro et al. suggested that Phaeodactylum tricornutum, which is a marine microalgae strain previously overlooked in the literature, may prove interesting for biofuel production, because of its high biomass productivity. ... Renewable & Sustainable Energy Reviews (2009), 14 (1), 217-232 CODEN: RSERFH; ISSN:1364-0321. ... Barreiro, D. L.; Prins, W.; Ronsse, F.; Brilman, W.Hydrothermal liquefaction (HTL) of microalgae for biofuel production: State of the art review and future prospects Biomass Bioenergy 2013, 53, 113 127 ...

Per Sigaard Christensen; Gal Peng; Frdric Vogel; Bo Brummerstedt Iversen

2014-08-19T23:59:59.000Z

287

Gasification Characteristics of Hydrothermal Carbonized Biomass in an Updraft Pilot-Scale Gasifier  

Science Journals Connector (OSTI)

Gasification Characteristics of Hydrothermal Carbonized Biomass in an Updraft Pilot-Scale Gasifier ... At elevated temperatures near 200250 C at or above the saturation pressure, the process is carried out in a medium of water with a residence time varying between 3 and 8 h. ... When the gasification experiments were performed in a pilot-scale gasifier and air preheated to 900 C was used as the gasifying medium, the H2, CO2, and hydrocarbon contents decreased with the ER value and the CO content increased. ...

Duleeka Sandamali Gunarathne; Andreas Mueller; Sabine Fleck; Thomas Kolb; Jan Karol Chmielewski; Weihong Yang; Wlodzimierz Blasiak

2014-02-20T23:59:59.000Z

288

Dissolved inorganic carbon isotopic composition of low-temperature axial and ridge-flank hydrothermal fluids of the Juan de Fuca Ridge  

E-Print Network (OSTI)

carbon isotopic composition of low-temperature axial and ridge-flank hydrothermal fluids of the Juan deDissolved inorganic carbon isotopic composition of low-temperature axial and ridge-flank hydrothermal fluids of the Juan de Fuca Ridge Brett D. Walker a,, Matthew D. McCarthy a , Andrew T. Fisher b

Fisher, Andrew

289

Techno-Economic Analysis of Liquid Fuel Production from Woody Biomass via Hydrothermal Liquefaction (HTL) and Upgrading  

SciTech Connect

A series of experimental work was conducted to convert woody biomass to gasoline and diesel range products via hydrothermal liquefaction (HTL) and catalytic hydroprocessing. Based on the best available test data, a techno-economic analysis (TEA) was developed for a large scale woody biomass based HTL and upgrading system to evaluate the feasibility of this technology. In this system, 2000 dry metric ton per day woody biomass was assumed to be converted to bio-oil in hot compressed water and the bio-oil was hydrotreated and/or hydrocracked to produce gasoline and diesel range liquid fuel. Two cases were evaluated: a stage-of-technology (SOT) case based on the tests results, and a goal case considering potential improvements based on the SOT case. Process simulation models were developed and cost analysis was implemented based on the performance results. The major performance results included final products and co-products yields, raw materials consumption, carbon efficiency, and energy efficiency. The overall efficiency (higher heating value basis) was 52% for the SOT case and 66% for the goal case. The production cost, with a 10% internal rate of return and 2007 constant dollars, was estimated to be $1.29 /L for the SOT case and $0.74 /L for the goal case. The cost impacts of major improvements for moving from the SOT to the goal case were evaluated and the assumption of reducing the organics loss to the water phase lead to the biggest reduction in the production cost. Sensitivity analysis indicated that the final products yields had the largest impact on the production cost compared to other parameters. Plant size analysis demonstrated that the process was economically attractive if the woody biomass feed rate was over 1,500 dry tonne/day, the production cost was competitive with the then current petroleum-based gasoline price.

Zhu, Yunhua; Biddy, Mary J.; Jones, Susanne B.; Elliott, Douglas C.; Schmidt, Andrew J.

2014-09-15T23:59:59.000Z

290

Cornell University, Office of Sponsored Programs Awards Received in October 2003  

E-Print Network (OSTI)

-S DHHS (FDA) DEVELOPMENT OF PCR DEVICE FOR PATHOGEN DETECTION $599,954 CBM 45193 BEDFORD, BARBARA L (NAVY-ONR) A COMPREHENSIVE WEB-BASED LIBRARY OF MARINE BIOLOGICAL SOUNDS $200,000 GEA 40946 BRETSCHER ACOUSTIC METHODS TO REMOTELY DETECT RIGHT WHALES IN NEW ENGLAND WATERS $198,433 GEA 45078 CLARK

Danforth, Bryan Nicholas

291

Ionic liquid assisted hydrothermal fabrication of hierarchically organized ?-AlOOH hollow sphere  

SciTech Connect

Highlights: ? The ?-AlOOH hollow spheres were synthesized via an ionic liquid-assisted hydrothermal treatment. ? Ionic liquid plays an important role in the morphology of the product. ? Ionic liquid can be easily removed from the product and reused in next experiment. ? A aggregationsolutionrecrystallization formation mechanism may occur in the system. -- Abstract: Hierarchically organized ?-AlOOH hollow spheres with nanoflake-like porous surface texture have been successfully synthesized via an ionic liquid-assisted hydrothermal synthesis method in citric acid monohydrate (CAMs). It was found that ionic liquid [bmim]{sup +}Cl{sup ?} played an important role in the morphology of the product due to its strong interactions with reaction particles. The samples were characterized by X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscope (SEM) and Transmission Electron Microscopy (TEM). The results show that the product has narrow particle size distribution (500900 nm particle diameter range), high specific surface area (240.5 m{sup 2}/g) and large pore volume (0.61 cm{sup 3}/g). The corresponding ?-Al{sub 2}O{sub 3} hollow spheres can be obtained by calcining it at 550 C for 3 h. The proposed formation mechanism and other influencing factors of the ?-AlOOH hollow sphere material, such as reaction temperature, reaction duration, CAMs and urea, have also been investigated.

Tang, Zhe, E-mail: tangzhe1983@163.com [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China); Liu, Yunqi, E-mail: liuyq@upc.edu.cn [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China); Li, Guangci, E-mail: liguangci1984@yahoo.com.cn [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China); Hu, Xiaofu, E-mail: hjj19850922@126.cn [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China); Liu, Chenguang, E-mail: cgliu@upc.edu.cn [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)

2012-11-15T23:59:59.000Z

292

Facile synthesis of graphene/ZnO nanocomposites by low temperature hydrothermal method  

SciTech Connect

Highlights: ? Graphene/ZnO nanocomposites were prepared by low temperature hydrothermal method. ? Rhodamine-B degraded by using graphene/ZnO nanocomposites. ? ZnO anchored well on the surface of graphene. -- Abstract: Graphene/ZnO nanocomposites have been synthesized using hydrothermal method at two different temperatures 80 and 90 C. The structure, morphology and optical properties of as synthesized nanocomposites were analyzed through X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy, transmission electron microscopy (TEM) and UVvis absorbance spectroscopy. The XRD pattern confirmed the formation of graphene decorated by hexagonal ZnO with high crystallinity. FESEM image revealed that the sheet like graphene decorated with ZnO in homogeneously. Decoration of quasi-spherical ZnO nanoparticles on graphene sheet was confirmed by TEM. The characteristic absorbance peaks of graphene/ZnO nanocomposites were observed in UV visible spectra. The photocatalytic degradation experiment was performed against rhodamine-B dye and showed good catalytic activity for both samples. The graphene/ZnO nanocomposites showed higher catalytic activity then ZnO nanoparticles. The GZN-90 sample showed more catalytic activity than GZN-80 due to higher density of ZnO in graphene surface generates large number of photo-induced electron.

Saravanakumar, Balasubramaniam; Mohan, Rajneesh [Nanomaterials and System Lab, Department of Mechatronics Engineering, Jeju National University, Jeju 690-756 (Korea, Republic of)] [Nanomaterials and System Lab, Department of Mechatronics Engineering, Jeju National University, Jeju 690-756 (Korea, Republic of); Kim, Sang-Jae, E-mail: kimsangj@jejunu.ac.kr [Nanomaterials and System Lab, Department of Mechatronics Engineering, Jeju National University, Jeju 690-756 (Korea, Republic of)] [Nanomaterials and System Lab, Department of Mechatronics Engineering, Jeju National University, Jeju 690-756 (Korea, Republic of)

2013-02-15T23:59:59.000Z

293

Hydrothermal synthesis and formation mechanism of hexagonal yttrium hydroxide fluoride nanobundles  

SciTech Connect

Graphical abstract: The formation of yttrium hydroxide fluorides nanobundles can be expressed as a precipitation transformation from cubic NaYF{sub 4} to hexagonal NaYF{sub 4} and to hexagonal Y(OH){sub 2.02}F{sub 0.98} owing to ion exchange. - Highlights: Novel Y(OH){sub 2.02}F{sub 0.98} nanobundles have been successfully prepared by hydrothermal method. The branched nanobundles composed of numerous oriented-attached nanoparticles has been studied. The growth mechanism is proposed to be ion exchange and precipitation transformation. - Abstract: This article presents the fabrication of hexagonal yttrium hydroxide fluoride nanobundles via one-pot hydrothermal process, using yttrium nitrate, sodium hydroxide and ammonia fluoride as raw materials to react in propanetriol solvent. The X-ray diffraction pattern clearly reveals that the grown product is pure yttrium hydroxide fluoride, namely Y(OH){sub 2.02}F{sub 0.98}. The morphology and microstructure of the synthesized product is testified to be nanobundles composed of numerous oriented-attached nanoparticles as observed from the field emission scanning electron microscopy (FESEM). The chemical composition was analyzed by the energy dispersive spectrum (EDS), confirming the phase transformation of the products which was clearly consistent with the result of XRD analysis. It is proposed that the growth of yttrium hydroxide fluoride nanobundles be attributed to ion exchange and precipitation transformation.

Tian, Li, E-mail: tianli_cl@163.com [Department of Material Science and Engineering, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201 (China); State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 (China); Sun, QiLiang; Zhao, RuiNi; He, HuiLin; Xue, JianRong [Department of Material Science and Engineering, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201 (China); Lin, Jun [State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 (China)

2013-11-15T23:59:59.000Z

294

Refined augmented Lagrange Hopfield network-based Lagrange relaxation for hydrothermal scheduling  

Science Journals Connector (OSTI)

This paper proposes a refined augmented Lagrange Hopfield network-based Lagrange relaxation (ALHN-LR) for solving short term hydrothermal scheduling (HTS) problem with pumped-storage hydro units. ALHN-LR consists of improved Lagrange relaxation (ILR) and augmented Lagrange Hopfield network (ALHN). For solving the HTS problem, the proposed method applies enhanced ILR for finding thermal unit scheduling, ALHN for solving constrained economic dispatch (CED), and heuristic search-based algorithms in earlier papers for committing hydro and pumped-storage units, repairing ramp rate, emission, and transmission constraint violations, and refining the obtained result. The proposed ALHN which is a continuous Hopfield network with its energy function based on augmented Lagrangian function can properly handle both equality and inequality constraints in CED problem. The proposed ALHN-LR is tested on a hydrothermal system with 17 thermal, two hydro and two pumped-storage units, and the IEEE 24-bus reliability test system over the 168-hour schedule time horizon. Test results indicate that the proposed method can obtain less total costs than those from augmented Hopfield network (AHN), hybrid enhanced Lagrangian relaxation and quadratic programming (hybrid LRQP), and augmented Lagrangian relaxation (ALR).

Dieu Ngoc Vo; Weerakorn Ongsakul

2013-01-01T23:59:59.000Z

295

Salt Wells Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Salt Wells Geothermal Area Salt Wells Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Salt Wells Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Future Plans 5 Exploration History 6 Well Field Description 7 Research and Development Activities 8 Technical Problems and Solutions 9 Geology of the Area 9.1 Regional Setting 9.2 Stratigraphy 9.3 Structure 10 Hydrothermal System 11 Heat Source 12 Geofluid Geochemistry 13 NEPA-Related Analyses (9) 14 Exploration Activities (28) 15 References Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Northwest Basin and Range Geothermal Region GEA Development Phase: Operational"Operational" is not in the list of possible values (Phase I - Resource Procurement and Identification, Phase II - Resource Exploration and Confirmation, Phase III - Permitting and Initial Development, Phase IV - Resource Production and Power Plant Construction) for this property.

296

Salt Wells Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Salt Wells Geothermal Area Salt Wells Geothermal Area (Redirected from Salt Wells Area) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Salt Wells Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Future Plans 5 Exploration History 6 Well Field Description 7 Research and Development Activities 8 Technical Problems and Solutions 9 Geology of the Area 9.1 Regional Setting 9.2 Stratigraphy 9.3 Structure 10 Hydrothermal System 11 Heat Source 12 Geofluid Geochemistry 13 NEPA-Related Analyses (9) 14 Exploration Activities (28) 15 References Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Northwest Basin and Range Geothermal Region GEA Development Phase: Operational"Operational" is not in the list of possible values (Phase I - Resource Procurement and Identification, Phase II - Resource Exploration and Confirmation, Phase III - Permitting and Initial Development, Phase IV - Resource Production and Power Plant Construction) for this property.

297

Abstract--A stochastic dynamic programming hydrothermal dispatch model to simulate a bid-based market is  

E-Print Network (OSTI)

on dynamic programming that optimizes and validates the bid prices strategies for each power plant in a hydro-thermal several plants. Emphasis is given to hydro reservoir modeling and to the assessment of their market power market power is detected, focalized on main reservoir plants and implicating important increases

Catholic University of Chile (Universidad Católica de Chile)

298

The precipitation of aragonite from shallow-water hydrothermal fluids in a coral reef, Tutum Bay, Ambitle Island,  

E-Print Network (OSTI)

of a hot, mineralized hydrothermal fluid. There, aragonite and ferrihydrite, a hydrous ferric oxide- hexagonal) crystals up to 2 cm long and (b) micro-crystals similar in appearance to ``feather dendrite found along volcanically active portions of the mid-ocean ridges or in deep back- arc basins. There is

Pichler, Thomas

299

The tube-worm Riftia pachyptila Jones, 1981 is one of the most prominent members of the hydrothermal vent  

E-Print Network (OSTI)

of the hydrothermal vent community. This organism harbours chemolithoautotrophic bacteria deep within its body production and inorganic carbon fixation. As a consequence of its morphology, the tube- worm must provide its symbionts with the compounds required for autotrophy (e.g. inorganic carbon and sulphide). Recent studies

Girguis, Peter R.

300

Controls on the genesis of hydrothermal cobalt mineralization: insights from the mineralogy and geochemistry of the Bou Azzer deposits, Morocco  

E-Print Network (OSTI)

Controls on the genesis of hydrothermal cobalt mineralization: insights from the mineralogy,Ni,Fe) arsenides and sulpharsenides, with accessory sulphides and gold in a quartz-carbonate gangue. The ore-Ni-Fe, avec des quantités mineures de sulphures et de l'or dans une gangue de quartz- carbonate. Les minerais

Note: This page contains sample records for the topic "hydrothermal gea development" 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

Helium and oxygen isotope analyses of hydrothermal fluids from the East Pacific Rise between 17S and 19S  

Science Journals Connector (OSTI)

?Hydrothermal vent fields south of the Garret Fracture zone were sampled for the isotope composition of helium and oxygen ([18O]H2O/[16OH2O). The helium isotopes end-member (3He?/?4He=8.3R ...

P. Jean-Baptiste; A. Dapoigny; M. Stievenard; J. L. Charlou

1997-08-01T23:59:59.000Z

302

Photoelectrochemical Study of the Band Structure of Zn2SnO4 Prepared by the Hydrothermal Method  

Science Journals Connector (OSTI)

In this paper, we study the band gap (Eg) and energetics of the conduction band (CB) and valence band (VB) for films of zinc stannate (Zn2SnO4) nanoparticles (ca. 25 nm) of the inverse-spinel structure prepared by the hydrothermal method. ...

Mario A. Alpuche-Aviles; Yiying Wu

2009-02-16T23:59:59.000Z

303

Sodium dodecyl benzene sulfonate-assisted synthesis through a hydrothermal reaction  

SciTech Connect

Graphical abstract: Reaction of a SeCl{sub 4} aqueous solution with a NiCl{sub 2}6H{sub 2}O aqueous solution in presence of sodium dodecyl benzene sulfonate (SDBS) as capping agent and hydrazine (N{sub 2}H{sub 4}H{sub 2}O) as reductant, produces nanosized nickel selenide through a hydrothermal method. The effect of temperature, reaction time and amounts of reductant on the morphology, particle sizes of NiSe nanostructures has been investigated. Highlights: ? NiSe nanostructures were synthesized by hydrothermal method. ? A novel Se source was used to synthesize NiSe. ? SDBS as capping agent plays a crucial role on the morphology of products. ? A mixture of Ni{sub 3}Se{sub 2} and NiSe was prepared in the presence of 2 ml hydrazine. ? A pure phase of NiSe was prepared in the presence of 4 or 6 ml hydrazine. -- Abstract: The effects of the anionic surfactant on the morphology, size and crystallization of NiSe precipitated from NiCl{sub 2}6H{sub 2}O and SeCl{sub 4} in presence of hydrazine (N{sub 2}H{sub 4}H{sub 2}O) as reductant were investigated. The products have been successfully synthesized in presence of sodium dodecyl benzene sulfonate (SDBS) as surfactant via an improved hydrothermal route. A variety of synthesis parameters, such as reaction time and temperature, capping agent and amount of reducing agent have a significant effect on the particle size, phase purity and morphology of the obtained products. The sample size became bigger with decreasing reaction temperature and increasing reaction time. In the presence of 2 ml hydrazine, the samples were found to be the mixture of Ni{sub 3}Se{sub 2} and NiSe. With increasing the reaction time and amount of hydrazine a pure phase of hexagonal NiSe was obtained. X-ray diffraction analysis (XRD), scanning electron microscope (SEM) and transmission electron microscopy (TEM) images indicate phase, particle size and morphology of the products. Chemical composition and purity of the products were characterized by X-ray energy dispersive spectroscopy (EDS). Photoluminescence (PL) was used to study the optical properties of NiSe samples.

Sobhani, Azam [Department of Inorganic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, P.O. Box 8731751167, Islamic Republic of Iran (Iran, Islamic Republic of)] [Department of Inorganic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, P.O. Box 8731751167, Islamic Republic of Iran (Iran, Islamic Republic of); Salavati-Niasari, Masoud, E-mail: salavati@kashanu.ac.ir [Department of Inorganic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, P.O. Box 8731751167, Islamic Republic of Iran (Iran, Islamic Republic of) [Department of Inorganic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, P.O. Box 8731751167, Islamic Republic of Iran (Iran, Islamic Republic of); Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P.O. Box 8731751167, Islamic Republic of Iran (Iran, Islamic Republic of)

2012-08-15T23:59:59.000Z

304

Production of levulinic acid from glucosamine by dilute-acid catalyzed hydrothermal process  

Science Journals Connector (OSTI)

Abstract Glucosamine is a basic unit of the chitin/chitosan structure, which is derived from crustacean (e.g. crab, shrimp) and insect shells. In this study, the production of levulinic acid (LA) from glucosamine via dilute-acid-catalyzed hydrothermal hydrolysis was investigated. Among the reaction conditions, reaction temperature, reaction time, and substrate concentration were more effective than catalyst concentration. The optimal conditions for LA production, as determined by the response-surface methodology (RSM), were as follows: 188C reaction temperature, 4wt% catalyst concentration, 49min reaction time, 120g/L substrate concentration. Under these conditions, the LA yield was 30.3g/L (25.3wt%), while the 5-HMF concentration was zero. These results might provide basic knowledge essential to the production of valuable chemicals derivable from renewable marine resources and utilizable as fuel additives and polymer building blocks.

Gwi-Taek Jeong

2014-01-01T23:59:59.000Z

305

Synthesis and characterization of WO{sub 3} nanostructures prepared by an aged-hydrothermal method  

SciTech Connect

Nanostructures of tungsten trioxide (WO{sub 3}) have been successfully synthesized by using an aged route at low temperature (60 deg. C) followed by a hydrothermal method at 200 deg. C for 48 h under well controlled conditions. The material was studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Energy Dispersive Spectroscopy (EDS), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). Specific Surface Area (S{sub BET}) were measured by using the BET method. The lengths of the WO{sub 3} nanostructures obtained are between 30 and 200 nm and their diameters are from 20 to 70 nm. The growth direction of the tungsten oxide nanostructures was determined along [010] axis with an inter-planar distance of 0.38 nm.

Huirache-Acuna, R., E-mail: rafael_huirache@yahoo.it [CFATA-UNAM, Boulevard Juriquilla 3001, Juriquilla Queretaro, 76230 (Mexico); Universidad La Salle Morelia, Av. Universidad 500, Mpio. Tarimbaro Mich., 58880 (Mexico); Paraguay-Delgado, F. [Centro de Investigacion en Materiales Avanzados, S.C. CIMAV, Laboratorio Nacional de Nanotecnologia-Chihuahua, Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chih., 31109 (Mexico); Albiter, M.A.; Lara-Romero, J. [Facultad de Ingenieria Quimica, Universidad Michoacana de San Nicolas de Hidalgo, Morelia Mich., 58000 (Mexico); Martinez-Sanchez, R. [Centro de Investigacion en Materiales Avanzados, S.C. CIMAV, Laboratorio Nacional de Nanotecnologia-Chihuahua, Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chih., 31109 (Mexico)

2009-09-15T23:59:59.000Z

306

Hydrothermal synthesis and infrared emissivity property of flower-like SnO{sub 2} particles  

SciTech Connect

The flower-like SnO{sub 2} particles are synthesized through a simple hydrothermal process. The microstructure, morphology and the infrared emissivity property of the as-prepared products are characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), and infrared spectroradio meter (ISM) respectively. The results show that the as-prepared SnO{sub 2} products are all indexed to tetragonal cassiterite phase of SnO{sub 2}. The different molarity ratios of the OH{sup ?} concentration to Sn{sup 4+} concentration ([OH{sup ?}]:[Sn{sup 4+}]) and the polyacrylamide (PAM) lead to the different morphological structures of SnO{sub 2}, which indicates that both the [OH{sup ?}]:[Sn{sup 4+}] and the PAM play an important role in the morphological evolution respectively. The infrared emissivities of the as-prepared SnO{sub 2} products are discussed.

Tian, J. X. [Institute of Photonics and Photon-Technology, Northwest University, Xi'an 710069 (China) [Institute of Photonics and Photon-Technology, Northwest University, Xi'an 710069 (China); Beijing Institute of Environmental Features, Beijing, 100854 (China); Zhang, Z. Y., E-mail: zhangzy@nwu.edu.cn [Institute of Photonics and Photon-Technology, Northwest University, Xi'an 710069 (China); School of Information Science and Technology, Northwest University, Xi'an 710127 (China); Yan, J. F.; Ruan, X. F.; Yun, J. N.; Zhao, W.; Zhai, C. X. [School of Information Science and Technology, Northwest University, Xi'an 710127 (China)] [School of Information Science and Technology, Northwest University, Xi'an 710127 (China)

2014-04-15T23:59:59.000Z

307

Methods for sulfate removal in liquid-phase catalytic hydrothermal gasification of biomass  

SciTech Connect

Processing of wet biomass feedstock by liquid-phase catalytic hydrothermal gasification must address catalyst fouling and poisoning. One solution can involve heating the wet biomass with a heating unit to a pre-treatment temperature sufficient for organic constituents in the feedstock to decompose, for precipitates of inorganic wastes to form, for preheating the wet feedstock in preparation for subsequent removal of soluble sulfate contaminants, or combinations thereof. Processing further includes reacting the soluble sulfate contaminants with cations present in the feedstock material to yield a sulfate-containing precipitate and separating the inorganic precipitates and/or the sulfate-containing precipitates out of the wet feedstock. Having removed much of the inorganic wastes and the sulfate contaminants that can cause poisoning and fouling, the wet biomass feedstock can be exposed to the heterogenous catalyst for gasification.

Elliott, Douglas C; Oyler, James

2013-12-17T23:59:59.000Z

308

Methods for sulfate removal in liquid-phase catalytic hydrothermal gasification of biomass  

SciTech Connect

Processing of wet biomass feedstock by liquid-phase catalytic hydrothermal gasification must address catalyst fouling and poisoning. One solution can involve heating the wet biomass with a heating unit to a pre-treatment temperature sufficient for organic constituents in the feedstock to decompose, for precipitates of inorganic wastes to form, for preheating the wet feedstock in preparation for subsequent removal of soluble sulfate contaminants, or combinations thereof. Processing further includes reacting the soluble sulfate contaminants with cations present in the feedstock material to yield a sulfate-containing precipitate and separating the inorganic precipitates and/or the sulfate-containing precipitates out of the wet feedstock. Having removed much of the inorganic wastes and the sulfate contaminants that can cause poisoning and fouling, the wet biomass feedstock can be exposed to the heterogeneous catalyst for gasification.

Elliott, Douglas C; Oyler, James R

2014-11-04T23:59:59.000Z

309

Development and Validation of an Advanced Stimulation Prediction Model for Enhanced Geothermal Systems (EGS)  

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

Project objectives: Develop a true 3D hydro-thermal fracturing and proppant flow/transport simulator that is particularly suited for EGS reservoir creation. Perform laboratory scale model tests of hydraulic fracturing and proppant flow/transport using a polyaxial loading device, and use the laboratory results to test and validate the 3D simulator.

310

Hydrothermal synthesis of nanocubes of sillenite type compounds for photovoltaic applications and solar energy conversion of carbon dioxide to fuels  

DOE Patents (OSTI)

The present invention relates to formation of nanocubes of sillenite type compounds, such as bismuth titanate, i.e., Bi.sub.12TiO.sub.20, nanocubes, via a hydrothermal synthesis process, with the resulting compound(s) having multifunctional properties such as being useful in solar energy conversion, environmental remediation, and/or energy storage, for example. In one embodiment, a hydrothermal method is disclosed that transforms nanoparticles of TiO.sub.2 to bismuth titanate, i.e., Bi.sub.12TiO.sub.20, nanocubes, optionally loaded with palladium nanoparticles. The method includes reacting titanium dioxide nanotubes with a bismuth salt in an acidic bath at a temperature sufficient and for a time sufficient to form bismuth titanate crystals, which are subsequently annealed to form bismuth titanate nanocubes. After annealing, the bismuth titanate nanocubes may be optionally loaded with nano-sized metal particles, e.g., nanosized palladium particles.

Subramanian, Vaidyanathan; Murugesan, Sankaran

2014-04-29T23:59:59.000Z

311

Lignin removal and benzenealcohol extraction effects on lignin measurements of the hydrothermal pretreated bamboo substrate  

Science Journals Connector (OSTI)

Abstract Lignin content of hydrothermal pretreated bamboo chips was determined by the two methods: TAPPI standard method (222om-06) and TAPPI standard method without benzenealcohol extraction (BAE). The results showed that including BAE resulted in lower Klason lignin (KL) and acid soluble lignin (ASL) measurements in the prehydrolyzed substrate, that is to say, BAE removed parts of KL and ASL. Therefore, the TAPPI standard method should be modified by omitting the BAE for lignin measurements of pretreated substrate. The following lignin removal analysis suggested that lignin was removed from the bamboo substrate during pretreatment by a combination of degradation reaction and deconstruction; thereafter the pseudo lignin generated in the hydrothermal pretreatment and condensation reaction between the lignin fragments accounted for the later KL increase.

X.J. Ma; S.L. Cao; X.F. Yang; L. Lin; L.H. Chen; L.L. Huang

2014-01-01T23:59:59.000Z

312

Investigation of in Situ Oxalate Formation from 2,3-Pyrazinedicarboxylate under Hydrothermal Conditions Using Nuclear Magnetic Resonance Spectroscopy  

Science Journals Connector (OSTI)

We have investigated the assembly of a two-dimensional coordination polymer, Nd2(C6H2N2O4)2(C2O4)(H2O)2, that has been prepared from the hydrothermal reaction of Nd(NO3)36H2O and 2,3-pyrazinedicarboxylic acid (H2pzdc). In situ oxalate formation as ...

Karah E. Knope; Hiroshi Kimura; Yoshiro Yasaka; Masaru Nakahara; Michael B. Andrews; Christopher L. Cahill

2012-02-24T23:59:59.000Z

313

Investigation of phase transitions for the hydrothermal formation of TiO2 in the presence of F? ions  

Science Journals Connector (OSTI)

The hydrothermal phase transition of ammonium titanate into TiO2 in aqueous ammonia media was investigated in the presence of F? ions by adding various kinds of electrolytes such as NaCl, NH4Cl, NaF, and NH4F. The phase composition and the morphologies of the products were examined by X-ray diffraction (XRD) and scanning electron microscopy (SEM). With the assistance of F? ions, pure brookite TiO2 can be hydrothermally prepared with a wide range of Na+ ion concentrations from 0.25M to 1.5M in just 24h, which has obvious advantages over the previous NaCl scheme [1,2]. Moreover, photocatalytic degradation of MO shows that both anatase and brookite prepared in the presence of F? ions show superior photocatalytic activities than those prepared in the absence of F? ions. The phase transition mechanism from ammonium titanate into TiO2 was also proposed. Besides the introduction of Na+ ions that benefits the phase transition from titanate to brookite, F? ions are suggested to play two key roles during the hydrothermal process: catalyzing the condensation reaction of TiOH to produce TiOTi linkages by forming TiF and regulating the intercalation and the de-intercalation of Na+ ions by counteracting the electrostatic interaction between the Na+ ions and the titanate layers.

Hongyun Yang; Feng Chen; Yanchao Jiao; Jinlong Zhang

2013-01-01T23:59:59.000Z

314

Recovery of solid fuel from municipal solid waste by hydrothermal treatment using subcritical water  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer Hydrothermal treatment using subcritical water was studied to recover solid fuel from MSW. Black-Right-Pointing-Pointer More than 75% of carbon in MSW was recovered as char. Black-Right-Pointing-Pointer Heating value of char was comparable to that of brown coal and lignite. Black-Right-Pointing-Pointer Polyvinyl chloride was decomposed at 295 Degree-Sign C and 8 MPa and was removed by washing. - Abstract: Hydrothermal treatments using subcritical water (HTSW) such as that at 234 Degree-Sign C and 3 MPa (LT condition) and 295 Degree-Sign C and 8 MPa (HT condition) were investigated to recover solid fuel from municipal solid waste (MSW). Printing paper, dog food (DF), wooden chopsticks, and mixed plastic film and sheets of polyethylene, polypropylene, and polystyrene were prepared as model MSW components, in which polyvinylchloride (PVC) powder and sodium chloride were used to simulate Cl sources. While more than 75% of carbon in paper, DF, and wood was recovered as char under both LT and HT conditions, plastics did not degrade under either LT or HT conditions. The heating value (HV) of obtained char was 13,886-27,544 kJ/kg and was comparable to that of brown coal and lignite. Higher formation of fixed carbon and greater oxygen dissociation during HTSW were thought to improve the HV of char. Cl atoms added as PVC powder and sodium chloride to raw material remained in char after HTSW. However, most Cl originating from PVC was found to converse into soluble Cl compounds during HTSW under the HT condition and could be removed by washing. From these results, the merit of HTSW as a method of recovering solid fuel from MSW is considered to produce char with minimal carbon loss without a drying process prior to HTSW. In addition, Cl originating from PVC decomposes into soluble Cl compound under the HT condition. The combination of HTSW under the HT condition and char washing might improve the quality of char as alternative fuel.

Hwang, In-Hee, E-mail: hwang@eng.hokudai.ac.jp [Laboratory of Solid Waste Disposal Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060 8628 (Japan); Aoyama, Hiroya; Matsuto, Toshihiko; Nakagishi, Tatsuhiro; Matsuo, Takayuki [Laboratory of Solid Waste Disposal Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060 8628 (Japan)

2012-03-15T23:59:59.000Z

315

Effect of calcination temperature on the photocatalytic reduction and oxidation processes of hydrothermally synthesized titania nanotubes.  

SciTech Connect

Titania nanotubes having diameters 8 to 12 nm and lengths of 50-300 nm were prepared using a hydrothermal method. Further, the titania nanotubes were calcined over the temperature range 200-800 C in order to enhance their photocatalytic properties by altering their morphology. The calcined titania nanotubes were characterized by using X-ray diffraction and surface area analysis and their morphological features were studied by scanning and transmission electron microscopy. Nanotubes calcined at 400 C showed the maximum extent of photocatalyitc reduction of carbon dioxide to methane, whereas samples calcined at 600 C produced maximum photocatalytic oxidation of acetaldehyde. Electron paramagnetic resonance (EPR) spectroscopy was used to interrogate the effects of nanotube structure on the charge separation and trapping as a function of calcination temperature. EPR results indicated that undercoordinated titania sites are associated with maximum CO{sub 2} reduction occurring in nanotubes calcined at 400 C. Despite the collapse of the nantube structure to form nanorods and the concomitant loss of surface area, the enhanced charge separation associated with increased crystallinity promoted high rates of oxidation of acetaldehyde in titania materials calcined at 600 C. These results illustrate that calcination temperature allows us to tune the morphological and surface features of the titania nanostructures for particular photocatalytic reactions.

Viayan, B.; Dimitrijevic, N. M.; Rajh, T.; Gray, K.; Northwestern Univ.

2010-08-05T23:59:59.000Z

316

Internal Technical Report, Hydrothermal Injection Program - East Mesa 1983-84 Test Data  

SciTech Connect

This report presents a test data index and a data plots for a series of 12 drawdown and tracer injection-withdrawal tests in porous-media aquifers at the East Mesa Geothermal Field located in the Imperial Valley near El Centro, California. Test and instrumentation summaries are also provided. The first 10 of these tests were completed during July and August 1983. The remaining 2 tests were completed in February 1984, after a 6-month quiescent period, in which tracers were left in the reservoir. The test wells used were 56-30 and 56-19, with 38-30 supplying water for the injection phase and 52-29 used as a disposal well during the backflowing of the test wells. Six other wells in the surrounding area were measured periodically for possible hydrologic effects during testing. It is not the intent of this report to supply analyzed data, but to list the uninterpreted computer stored data available for analysis. The data have been examined only to the extent to ensure that they are reasonable and internally consistent. This data is stored on permanent files at the Idaho National Engineering Laboratory (INEL) Cyber Computer Complex. The main processors for this complex are located at the Computer Science Center (CSC) in Idaho Falls, Idaho. The Hydrothermal Injection Test program, funded by the Department of Energy, was a joint effort between EG and G Idaho, Inc., the University of Utah Research Institute (UURI) and Republic Geothermal, Inc. (RGI) of Santa Fe Springs, California.

Freiburger, R.M.

1984-09-01T23:59:59.000Z

317

Photocatalytic activity enhancement of CdS through In doping by simple hydrothermal method  

Science Journals Connector (OSTI)

In doped CdS has been prepared by simple hydrothermal method and characterized by X-ray diffraction, scanning electron microscopy, UVvis spectrometer, and X-ray photoelectron spectroscopy techniques. The photocatalytic activity of the prepared samples was tested by Rhodamine B degradation under simulated solar light with the comparison of pure CdS sample. The results show that all the prepared samples have fine crystallinity, and In3+/Cd2+ molar ratio greatly affects the morphology and photocatalytic activity of the samples. In doped CdS reveals enhanced photocatalytic activity compared with pure CdS. As for the photocatalytic mechanism of Rh-B over the prepared sample, hole and electron are responsible for the photocatalytic degradation and OH does not have strong contribution. So, hole and electron may not get converted to OH for Rh-B degradation. The as-prepared nanostructure samples may have application potential for environmental purification due to their high photocatalytic activity.

A.M. Abdulkarem; E.M. Elssfah; Nan-Nan Yan; G. Demissie; Ying Yu

2013-01-01T23:59:59.000Z

318

Textural properties of synthetic nano-calcite produced by hydrothermal carbonation of calcium hydroxide  

E-Print Network (OSTI)

The hydrothermal carbonation of calcium hydroxide (Ca(OH)2) at high pressure of CO2 (initial PCO2 1/4 55 bar) and moderate to high temperature (30 and 90 1C) was used to synthesize fine particles of calcite. This method allows a high carbonation efficiency (about 95% of Ca(OH)2-CaCO3 conversion), a significant production rate (48 kg/m3 h) and high purity of product (about 96%). However, the various initial physicochemical conditions have a strong influence on the crystal size and surface area of the synthesized calcite crystals. The present study is focused on the estimation of the textural properties of synthesized calcite (morphology, specific surface area, average particle size, particle size distribution and particle size evolution with reaction time), using Rietveld refinements of X-ray diffraction (XRD) spectra, Brunauer-Emmett-Teller (BET) measurements, and scanning electron microscope (SEM) and transmission electron microscope (TEM) observations. This study demonstrate that the pressure, the temperatu...

Montes-Hernandez, German; Charlet, L; Tisserand, Delphine; Renard, F

2008-01-01T23:59:59.000Z

319

Clean solid biofuel production from high moisture content waste biomass employing hydrothermal treatment  

Science Journals Connector (OSTI)

Abstract Our society currently faces three challenges, including resource depletion, waste accumulation and environmental degradation, leading to rapidly escalating raw material costs and increasingly expensive and restrictive waste disposal legislation. This work aims to produce clean solid biofuel from high moisture content waste biomass (bio-waste) with high nitrogen (N)/chlorine (Cl) content by mild hydrothermal (HT) conversion processes. The newest results are summarized and discussed in terms of the mechanical dewatering and upgrading, dechlorination, denitrification and coalification resulting from the HT pretreatment. Moreover, both the mono-combustion and co-combustion characteristics of the solid fuel are reviewed by concentrating on the pollutants emission control, especially the NO emission properties. In addition, the feasibility of this HT solid biofuel production process is also discussed in terms of Energy Balance and economic viability. As an alternative to dry combustion/dry pyrolysis/co-combustion, the HT process, combining the dehydration and decarboxylation of a biomass to raise its carbon content aiming to achieve a higher calorific value, opens up the field of potential feedstock for lignite-like solid biofuel production from a wide range of nontraditional renewable and plentiful wet agricultural residues, sludge and municipal wastes. It would contribute to a wider application of HT pretreatment bio-wastes for safe disposal and energy recycling.

Peitao Zhao; Yafei Shen; Shifu Ge; Zhenqian Chen; Kunio Yoshikawa

2014-01-01T23:59:59.000Z

320

Behaviour investigation of hematite nanorods synthesised by hydrothermal method use in hydrogen fuel storage  

Science Journals Connector (OSTI)

For the first time, hematite nanorods were successfully synthesised using iron nitrate precursors in the presence of cation SO4?2. This is also the first time that an investigation into hematite nanorods behaviour for hydrogen fuel storage has been carried out. Microspheres constructed with ?-FeOOH nanorods were synthesised via a novel hydrothermal method using a mixture of Fe(NO3)3 4H2O and Na2SO4 as the initial material. The ?-FeOOH was transformed into hematite (?-Fe2O3) nanorods through an annealing process at 600C for 2 h. The influence of different anions on the formation of hematite ?-Fe2O3 nanorods was investigated. Experimental results proved that the addition of Na2SO4 solution controlled the morphology of ?-Fe2O3. Its structure and morphology were investigated using XRD, SEM and Raman techniques. The kinetic curve of hydrogen generation of some hematite morphology samples was examined by redox cycle and the hydrogen fuel was formed by oxidation with water vapour. Although the nanorod morphology of hematite samples was damaged during redox cycles, the samples demonstrated high activity for hydrogen generation in comparison with precipitation and sol gel samples. The ratio of H2/Fe of nanorod samples for two redox cycles was 1.91% and 1.76%, respectively. Thus, hematite nanorods are a promising material for storage of hydrogen fuel.

Van Dinh Son Tho; Luu Thi Lan Anh; Nguyen Ngoc Trung; Pham Van Thang; Nguyen Duc Hieu; Pham Phi Hung; Vo Thach Son; Tran Thanh Thai

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Strength, storage, and combustion characteristics of densified lignocellulosic biomass produced via torrefaction and hydrothermal carbonization  

Science Journals Connector (OSTI)

Abstract Lignocellulosic biomass has the potential to produce sustainable clean-green energy and other bio-based materials. However, due to the inferior physicochemical properties compared to coal, biomass is not regarded as an ideal feedstock for industrial applications. The work presented in this study evaluates the feasibility of two different thermal pre-treatments, torrefaction and hydrothermal carbonization (HTC), followed by densification. The densified and pretreated samples obtained from miscanthus feedstock were characterized in terms of the strength, storage, and combustion properties for energy applications. The results showed that both the thermal pre-treatments are promising methods for upgrading biomass. However, the HTC pellets showed considerably superior physicochemical properties when compared to the raw and torrefied pellets. The mass density (mass per unit volume) and volumetric energy density (HHV per unit volume) of the pellets produced via HTC at 260C was significantly higher (1036kg/m3, 26.9GJ/m3) compared to raw pellets (834kg/m3, 15.7GJ/m3) and torrefied pellets (820kg/m3, 16.7GJ/m3). Moreover, the HTC pellets showed improved hydrophobicity, reduction in ash content, reduction in alkali and alkaline earth metal content, and a considerable increase in the carbon content. Based on these results, the HTC pellets have potential for the heat and power applications, including replacing coal in the existing coal-fired power plants without any significant modifications.

Harpreet Singh Kambo; Animesh Dutta

2014-01-01T23:59:59.000Z

322

Hydrothermal synthesis of yttria stabilized ZrO{sub 2} nanoparticles in subcritical and supercritical water using a flow reaction system  

SciTech Connect

Yttria stabilized zirconia nanoparticles have been prepared by hydrothermal flow reaction system under subcritical and supercritical conditions. ZrO(NO{sub 3}){sub 2}/Y(NO{sub 3}){sub 3} mixed solutions were used as starting materials. Reaction temperature was 300-400 deg. C. Reaction time was adjusted to 0.17-0.35 s. Based on the residual Zr and Y concentrations, the complete conversion of zirconium was achieved irrespective of pH and hydrothermal temperature, whereas the conversion of yttrium increased with an increase in pH and hydrothermal temperature. Stoichiometric solid solution was achieved at pH>8. XRD results revealed that tetragonal zirconia can be formed regardless of yttrium content, where the tetragonality was confirmed by Raman spectroscopy. The average particle size estimated from BET surface area was around 4-6 nm. Dynamic light scattering particle size increased with the solution pH owing to the aggregation of primary particles. TG-DTA analyses revealed that weight losses for adsorbed water and hydroxyl groups decreased with hydrothermal temperature. - Graphical abstract: Nanoparticles of YSZ can be synthesized in subcritical and supercritical water using a hydrothermal flow reaction system. Given is the TEM image of YSZ nanoparticles.

Hayashi, Hiromichi, E-mail: h-hayashi@aist.go.j [Research Center for Compact Chemical Process, National Institute of Advanced Industrial Science and Technology (AIST), Nigatake 4-2-1, Miyagino-ku, Sendai 983-8551 (Japan); Ueda, Akiko; Suino, Atsuko; Hiro, Kyoko; Hakuta, Yukiya [Research Center for Compact Chemical Process, National Institute of Advanced Industrial Science and Technology (AIST), Nigatake 4-2-1, Miyagino-ku, Sendai 983-8551 (Japan)

2009-11-15T23:59:59.000Z

323

Transportability Class of Americium in K Basin Sludge under Ambient and Hydrothermal Processing Conditions  

SciTech Connect

This report establishes the technical bases for using a ''slow uptake'' instead of a ''moderate uptake'' transportability class for americium-241 (241Am) for the K Basin Sludge Treatment Project (STP) dose consequence analysis. Slow uptake classes are used for most uranium and plutonium oxides. A moderate uptake class has been used in prior STP analyses for 241Am based on the properties of separated 241Am and its associated oxide. However, when 241Am exists as an ingrown progeny (and as a small mass fraction) within plutonium mixtures, it is appropriate to assign transportability factors of the predominant plutonium mixtures (typically slow) to the Am241. It is argued that the transportability factor for 241Am in sludge likewise should be slow because it exists as a small mass fraction as the ingrown progeny within the uranium oxide in sludge. In this report, the transportability class assignment for 241Am is underpinned with radiochemical characterization data on K Basin sludge and with studies conducted with other irradiated fuel exposed to elevated temperatures and conditions similar to the STP. Key findings and conclusions from evaluation of the characterization data and published literature are summarized here. Plutonium and 241Am make up very small fractions of the uranium within the K Basin sludge matrix. Plutonium is present at about 1 atom per 500 atoms of uranium and 241Am at about 1 atom per 19000 of uranium. Plutonium and americium are found to remain with uranium in the solid phase in all of the {approx}60 samples taken and analyzed from various sources of K Basin sludge. The uranium-specific concentrations of plutonium and americium also remain approximately constant over a uranium concentration range (in the dry sludge solids) from 0.2 to 94 wt%, a factor of {approx}460. This invariability demonstrates that 241Am does not partition from the uranium or plutonium fraction for any characterized sludge matrix. Most of the K Basin sludge characterization data is derived spent nuclear fuel corroded within the K Basins at 10-15?C. The STP process will place water-laden sludges from the K Basin in process vessels at {approx}150-180 C. Therefore, published studies with other irradiated (uranium oxide) fuel were examined. From these studies, the affinity of plutonium and americium for uranium in irradiated UO2 also was demonstrated at hydrothermal conditions (150 C anoxic liquid water) approaching those proposed for the STP process and even for hydrothermal conditions outside of the STP operating envelope (e.g., 150 C oxic and 100 C oxic and anoxic liquid water). In summary, by demonstrating that the chemical and physical behavior of 241Am in the sludge matrix is similar to that of the predominant species (uranium and for the plutonium from which it originates), a technical basis is provided for using the slow uptake transportability factor for 241Am that is currently used for plutonium and uranium oxides. The change from moderate to slow uptake for 241Am could reduce the overall analyzed dose consequences for the STP by more than 30%.

Delegard, Calvin H.; Schmitt, Bruce E.; Schmidt, Andrew J.

2006-08-01T23:59:59.000Z

324

HYDRA-II: A hydrothermal analysis computer code: Volume 2, User's manual  

SciTech Connect

HYDRA-II is a hydrothermal computer code capable of three-dimensional analysis of coupled conduction, convection, and thermal radiation problems. This code is especially appropriate for simulating the steady-state performance of spent fuel storage systems. The code has been evaluated for this application for the US Department of Energy's Commercial Spent Fuel Management Program. HYDRA-II provides a finite-difference solution in cartesian coordinates to the equations governing the conservation of mass, momentum, and energy. A cylindrical coordinate system may also be used to enclose the cartesian coordinate system. This exterior coordinate system is useful for modeling cylindrical cask bodies. The difference equations for conservation of momentum incorporate directional porosities and permeabilities that are available to model solid structures whose dimensions may be smaller than the computational mesh. The equation for conservation of energy permits modeling of orthotropic physical properties and film resistances. Several automated methods are available to model radiation transfer within enclosures and from fuel rod to fuel rod. The documentation of HYDRA-II is presented in three separate volumes. Volume 1 - Equations and Numerics describes the basic differential equations, illustrates how the difference equations are formulated, and gives the solution procedures employed. This volume, Volume 2 - User's Manual, contains code flow charts, discusses the code structure, provides detailed instructions for preparing an input file, and illustrates the operation of the code by means of a sample problem. The final volume, Volume 3 - Verification/Validation Assessments, provides a comparison between the analytical solution and the numerical simulation for problems with a known solution. 6 refs.

McCann, R.A.; Lowery, P.S.; Lessor, D.L.

1987-09-01T23:59:59.000Z

325

Influence of EDTA{sup 2-} on the hydrothermal synthesis of CdTe nanocrystallites  

SciTech Connect

Transformation from Te nanorods to CdTe nanoparticles was achieved with the assistance of EDTA as a ligand under hydrothermal conditions. Experimental results showed that at the beginning of reaction Te nucleated and grew into nanorods. With the proceeding of reaction, CdTe nucleus began to emerge on the surface, especially on the tips of Te nanorods. Finally, nearly monodispersed hexagonal CdTe nanoparticles with diameters of about 200 nm were obtained. The effects of EDTA on the morphology and formation of CdTe nanoparticles were discussed in consideration of the strong ligand-effect of EDTA, which greatly decreased the concentration of Cd{sup 2+}. Furthermore, the possible formation process of CdTe nanoparticles from Te nanorods was further proposed. The crystal structure and morphology of the products were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). - Graphical Abstract: Firstly, Te nucleated and grew into nanorods in the presence of EDTA{sup 2-}. Then CdTe nucleus began to emerge on Te nanorods and finally monodispersed CdTe nanoparticles were obtained. Highlights: Black-Right-Pointing-Pointer EDTA serves as a strong ligand with Cd{sup 2+}. Black-Right-Pointing-Pointer The existence of EDTA constrains the nucleation of CdTe and promotes the formation of Te nanorods. Black-Right-Pointing-Pointer With the proceeding of reaction, CdTe nucleus began to emerge on the surface, especially on the tips of Te nanorods. Black-Right-Pointing-Pointer Nearly monodispersed hexagonal CdTe nanoparticles with diameters of about 200 nm were finally obtained.

Gong Haibo [Center of Bio and Micro/nano Functional Materials, State Key Lab of Crystal Materials, Shandong University, Jinan 250100 (China); School of Materials Science and Engineering, University of Jinan, Jinan 250022 (China); Hao Xiaopeng, E-mail: xphao@sdu.edu.cn [Center of Bio and Micro/nano Functional Materials, State Key Lab of Crystal Materials, Shandong University, Jinan 250100 (China); Wu Yongzhong [Center of Bio and Micro/nano Functional Materials, State Key Lab of Crystal Materials, Shandong University, Jinan 250100 (China); Cao Bingqiang; Xu Hongyan [School of Materials Science and Engineering, University of Jinan, Jinan 250022 (China); Xu Xiangang [Center of Bio and Micro/nano Functional Materials, State Key Lab of Crystal Materials, Shandong University, Jinan 250100 (China)

2011-12-15T23:59:59.000Z

326

Carbon dioxide-assisted fabrication of highly uniform submicron-sized colloidal carbon spheres via hydrothermal carbonization using soft drink  

SciTech Connect

An eco-friendly and economical method for the formation of uniform-sized carbon spheres by hydrothermal dehydration/condensation of a commercial carbonated beverage at 200 oC is reported. CO2 dissolved in the beverage accelerates the dehydration kinetics of the dissolved sugar molecules leading to production of homogeneous carbon spheres having a diameter less than 850 nm. In the presence of CO2, the rough surface of these carbon spheres likely results from continuous Ostwald ripening of constituent microscopic carbon-containing spheres that are formed by subsequent polymerization of intermediate HMF molecules.

Moon, Gun-Hee; Shin, Yongsoon; Arey, Bruce W.; Wang, Chong M.; Exarhos, Gregory J.; Choi, Wonyong; Liu, Jun

2012-10-01T23:59:59.000Z

327

Field Trip Guide to Serpentinite, Silica-Carbonate Alteration, and Related Hydrothermal Activity in the Clear Lake Region, California  

SciTech Connect

This guide is designed to familiarize scientists with the geology, structure, alteration, and fluids typical of California serpentinites for purposes of carbon dioxide sequestration (Lackner et al., 1995). Goff et al. (1997) and Goff and Lackner (1998) describe the geology and geochemistry of some of the serpentinites from this area. Mechanisms of silica-carbonate alteration were outlined by Barnes et al. (1973). Donnelly-Nolan et al. (1993) most recently reviewed relations between regional hydrothermal alteration and Quarternary volcanic activity. Stanley et al. (1998) summarized geophysical characteristics of the region.

Fraser Goff; George Guthrie

1999-06-01T23:59:59.000Z

328

Negative Differential Resistance Behavior and Memory Effect in Laterally Bridged ZnO Nanorods Grown by Hydrothermal Method  

Science Journals Connector (OSTI)

Negative Differential Resistance Behavior and Memory Effect in Laterally Bridged ZnO Nanorods Grown by Hydrothermal Method ... Therefore, investigating and studying the electric property in nano-scale devices are necessary to advance toward next-generation memory devices. ... The barrier height (?B) can be obtained by solving the Poissons equation including the interface charge(2)where NIS is the density of trapped charge in the interface, ?r is the relative permittivity, ?0 is the permittivity of free space, and q is the elementary charge. ...

Ming-Yueh Chuang; Ying-Chih Chen; Yan-Kuin Su; Chih-Hung Hsiao; Chien-Sheng Huang; Jeng-Je Tsai; Hsin-Chieh Yu

2014-03-13T23:59:59.000Z

329

Development Of Genetic Occurrence Models For Geothermal Prospecting | Open  

Open Energy Info (EERE)

Development Of Genetic Occurrence Models For Geothermal Prospecting Development Of Genetic Occurrence Models For Geothermal Prospecting Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Development Of Genetic Occurrence Models For Geothermal Prospecting Details Activities (1) Areas (1) Regions (0) Abstract: Exploration strategies based on an understanding of the geologic processes that transfer heat from the mantle to the upper crust, and foster the conditions for shallow hydrothermal circulation or enhanced geothermal systems (EGS) exploration, are required to search efficiently for 'blind' geothermal resources. We propose a genetically based screening protocol to assess potentially prospective geothermal resources, beginning at the plate boundary scale and progressively focusing in on the scale of a producing

330

Geothermal Energy Growth Continues, Industry Survey Reports  

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

A survey released by the Geothermal Energy Association (GEA) shows continued growth in the number of new geothermal power projects under development in the United States, a 20% increase since January of this year.

331

Comparative analysis of pinewood, peanut shell, and bamboo biomass derived biochars produced via hydrothermal conversion and pyrolysis  

Science Journals Connector (OSTI)

Abstract Biochars were produced from pinewood, peanut shell, and bamboo biomass through hydrothermal conversion (HTC) at 300C and comparatively by slow pyrolysis over a temperature range of 300, 400, and 500C. These biochars were characterized by FT-IR, cation exchange capacity (CEC) assay, methylene blue adsorption, as well as proximate and elemental analysis. The experimental results demonstrated higher retained oxygen content in biochars produced at lower pyrolysis temperatures and through HTC, which also correlated to the higher CEC of respective biochars. Furthermore, all types of biochar studied herein were capable of adsorption of methylene blue from solution and the adsorption did not appear to strongly correlate with CEC, indicating that the methylene blue adsorption appears to be dependent more upon the non-electrostatic molecular interactions such as the likely dispersive ?? interactions between the graphene-like sheets of the biochar with the aromatic ring structure of the dye, than the electrostatic CEC. A direct comparison of hydrothermal and pyrolysis converted biochars reveals that biochars produced through HTC have much higher CEC than the biochars produced by slow pyrolysis. Analysis by FT-IR reveals a higher retention of oxygen functional groups in HTC biochars; additionally, there is an apparent trend of increasing aromaticity of the pyrolysis biochars when produced at higher temperatures. The CEC value of the HTC biochar appears correlated with its oxygen functional group content as indicated by the FT-IR measurements and its O:C ratio.

Matthew D. Huff; Sandeep Kumar; James W. Lee

2014-01-01T23:59:59.000Z

332

Nickel-cobalt alloy nanosheets obtained from reductive hydrothermal-treatment of nickel-cobalt hydroxide carbonate  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer An anionic layered material, nickel-cobalt hydroxide carbonate was synthesized. Black-Right-Pointing-Pointer Reductive hydrothermal-treatment of the layered precursor produced an alloy. Black-Right-Pointing-Pointer The alloy is a bimetallic nanostructured nickel-cobalt and a soft magnet material. -- Abstract: Nickel-cobalt hydroxide carbonate, a layered material was synthesized by the co-precipitation method using urea as precipitant agent. This anionic layered material with hexagonal structure is constructed from nickel and cobalt ions within the layers and carbonate anions between the layers. Nickel-cobalt alloy with pure cubic phase was obtained by a reductive hydrothermal-treatment of the layered precursor. Powder X-ray diffraction pattern and Fourier transform infrared spectroscopy confirmed the formation of the initial layered material and its metallic alloy product. That is, the nickel-cobalt alloy has really produced via a wet chemical route for the first time. Magnetic measurement revealed that the alloy sample is a soft magnet material.

Ghotbi, Mohammad Yeganeh, E-mail: yeganehghotbi@gmail.com [Nanomaterials and Nanotechnology Program, Ceramic Engineering Department, Faculty of Engineering, Malayer University, Malayer (Iran, Islamic Republic of); Jolagah, Ali; Afrasiabi, Hasan-ali [Nanomaterials and Nanotechnology Program, Ceramic Engineering Department, Faculty of Engineering, Malayer University, Malayer (Iran, Islamic Republic of)] [Nanomaterials and Nanotechnology Program, Ceramic Engineering Department, Faculty of Engineering, Malayer University, Malayer (Iran, Islamic Republic of)

2012-03-15T23:59:59.000Z

333

Controls on the geomorphic expression and evolution of gryphons, pools, and caldera features at hydrothermal seeps in the Salton Sea Geothermal Field,  

E-Print Network (OSTI)

at hydrothermal seeps in the Salton Sea Geothermal Field, southern California Nathan Onderdonk a, , Adriano In the Salton Sea Geothermal Field in southern California, expulsion of gas, sediment and water creates unique.1. Regional setting The Salton Sea Geothermal Field (SSGF) is an area of high heat flow located

Svensen, Henrik

334

Hydrothermal brecciation in the Jemez Fault zone, Valles Caldera, New Mexico: Results from CSDP (Continental Scientific Drilling Program) corehole VC-1  

SciTech Connect

Paleozoic and Precambrian rocks intersected deep in Continental Scientific Drilling Program corehole VC-1, adjacent to the late Cenozoic Valles caldera complex, have been disrupted to form a spectacular breccia sequence. The breccias are of both tectonic and hydrothermal origin, and probably formed in the Jemez fault zone, a major regional structure with only normal displacement since mid-Miocene. Tectonic breccias are contorted, crushed, sheared, and granulated; slickensides are commmon. Hydrothermal breccias, by contrast, lack these frictional textures, but arej commonly characterized by fluidized matrix foliation and prominent clast rounding. Fluid inclusions in the hydrothermal breccias are dominantly two-phase, liquid-rich at room temperature, principally secondary, and form two distinctly different compositional groups. Older inclusions, unrelated to brecciation, are highly saline and homogenize to the liquid phase in the temperature range 189 to 246/sup 0/C. Younger inclusions, in part of interbreccia origin, are low-salinity and homogenize (also to liquid) in the range 230 to 283/sup 0/C. Vapor-rich inclusions locally trapped along with these dilute liquid-rich inclusions document periodic boiling. These fluid-inclusion data, together with alteration assemblages and textures as well as the local geologic history, have been combined to model hydrothermal brecciation at the VC-1 site.

Hulen, J.B.; Nielson, D.L.

1987-06-01T23:59:59.000Z

335

Hydrothermal synthesis of Ln(OH)3 nanorods and the conversion to Ln2O3 (Ln = Eu, Nd, Dy) nanorods via annealing process  

Science Journals Connector (OSTI)

One-dimensional rare earth oxides and hydroxides are of importance in many applications due to their rich physicochemical properties. In this work, we synthesized Ln(OH)3 (Ln = Eu, Nd, Dy) nanorods by a hydrothermal method with the assistance ...

Yanhua Zhu, Xiang Zhai, Lingling Wang

2013-01-01T23:59:59.000Z

336

Rheological Study of Comingled Biomass and Coal Slurries with HydrothermalPretreatment  

E-Print Network (OSTI)

in the development of alternative transportation fuels hasbe a promising alternative resource for transportation fuel

He, W; Park, C S; Norbeck, J N

2009-01-01T23:59:59.000Z

337

Geothermal power development in Hawaii. Volume I. Review and analysis  

SciTech Connect

The history of geothermal exploration in Hawaii is reviewed briefly. The nature and occurrences of geothermal resources are presented island by island. An overview of geothermal markets is presented. Other topies covered are: potential markets of the identified geothermal areas, well drilling technology, hydrothermal fluid transport, overland and submarine electrical transmission, community aspects of geothermal development, legal and policy issues associated with mineral and land ownership, logistics and infrastructure, legislation and permitting, land use controls, Regulation 8, Public Utilities Commission, political climate and environment, state plans, county plans, geothermal development risks, and business planning guidelines.

Not Available

1982-06-01T23:59:59.000Z

338

Ca, Sr, O and D isotope approach to defining the chemical evolution of hydrothermal fluids: Example from Long Valley, CA, USA  

Science Journals Connector (OSTI)

Abstract We present chemical and isotopic data for fluids, minerals and rocks from the Long Valley meteoric-hydrothermal system. The samples encompass the presumed hydrothermal upwelling zone in the west moat of the caldera, the Casa Diablo geothermal field, and a series of wells defining a nearly linear, ?16km long, west-to-east trend along the likely fluid flow path. Fluid samples were analyzed for the isotopes of water, Sr, and Ca, the concentrations of major cations and anions, alkalinity, and total CO2. Water isotope data conform to trends documented in earlier studies, interpreted as indicating a single hydrothermal fluid mixing with local groundwater. Sr isotopes show subtle changes along the flow path, which requires rapid fluid flow and minimal reaction between the channelized fluids and the wallrocks. Sr and O isotopes are used to calculate fracture spacing using a dual porosity model. Calculated fracture spacing and temperature data for hydrothermal fluids indicate the system is (approximately) at steady-state. Correlated variations among total CO2, and the concentration and isotopic composition of Ca suggest progressive fluid degassing (loss of CO2), which drives calcite precipitation as the fluid flows west-to-east and cools. The shifts in Ca isotopes require that calcite precipitated at temperatures of 150180C is fractionated by ca. ?0.3 to ?0.5 relative to aqueous species. Our data are the first evidence that Ca isotopes undergo kinetic fractionation at high temperatures (>100C) and can be used to trace calcite precipitation along hydrothermal fluid flow paths.

Shaun T. Brown; B. Mack Kennedy; Donald J. DePaolo; Shaul Hurwitz; William C. Evans

2013-01-01T23:59:59.000Z

339

Thermal conversion of municipal solid waste via hydrothermal carbonization: Comparison of carbonization products to products from current waste management techniques  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer Hydrothermal carbonization (HTC) is a novel thermal conversion process. Black-Right-Pointing-Pointer HTC converts wastes into value-added resources. Black-Right-Pointing-Pointer Carbonization integrates majority of carbon into solid-phase. Black-Right-Pointing-Pointer Carbonization results in a hydrochar with high energy density. Black-Right-Pointing-Pointer Using hydrochar as an energy source may be beneficial. - Abstract: Hydrothermal carbonization (HTC) is a novel thermal conversion process that may be a viable means for managing solid waste streams while minimizing greenhouse gas production and producing residual material with intrinsic value. HTC is a wet, relatively low temperature (180-350 Degree-Sign C) thermal conversion process that has been shown to convert biomass to a carbonaceous residue referred to as hydrochar. Results from batch experiments indicate HTC of representative waste materials is feasible, and results in the majority of carbon (45-75% of the initially present carbon) remaining within the hydrochar. Gas production during the batch experiments suggests that longer reaction periods may be desirable to maximize the production of energy-favorable products. If using the hydrochar for applications in which the carbon will remain stored, results suggest that the gaseous products from HTC result in fewer g CO{sub 2}-equivalent emissions than the gases associated with landfilling, composting, and incineration. When considering the use of hydrochar as a solid fuel, more energy can be derived from the hydrochar than from the gases resulting from waste degradation during landfilling and anaerobic digestion, and from incineration of food waste. Carbon emissions resulting from the use of the hydrochar as a fuel source are smaller than those associated with incineration, suggesting HTC may serve as an environmentally beneficial alternative to incineration. The type and extent of environmental benefits derived from HTC will be dependent on hydrochar use/the purpose for HTC (e.g., energy generation or carbon storage).

Lu Xiaowei; Jordan, Beth [Department of Civil and Environmental Engineering, University of South Carolina, 300 Main Street, Columbia, SC 29208 (United States); Berge, Nicole D., E-mail: berge@cec.sc.edu [Department of Civil and Environmental Engineering, University of South Carolina, 300 Main Street, Columbia, SC 29208 (United States)

2012-07-15T23:59:59.000Z

340

Identification of chemoautotrophic microorganisms from a diffuse flow hydrothermal vent at EPR 9 north using C DNA stable isotope probing and catalyzed activated reporter deposition-fluorescence in situ hybridization  

E-Print Network (OSTI)

At deep-sea hydrothermal vents chemolithoautotrophic microbes mediate the transfer of geothermal chemical energy to higher trophic levels. To better understand these underlying processes and the organisms catalyzing them, ...

Richberg, Kevin Patrick

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" 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

In situ ore formation experiment: Amino acids and amino sugars trapped in artificial chimneys on deep-sea hydrothermal systems at Suiyo Seamount, Izu-Bonin Arc, Pacific Ocean  

E-Print Network (OSTI)

The present study reports on the bio-organic composition of a deep-sea venting hydrothermal system originating from arc volcanism; the origin of the particulates in hydrothermal fluids from the Suiyo Seamount in the southern Izu-Bonin (Ogasawara) Arc is discussed with regard to amino compounds. Chimney samples on deep-sea hydrothermal systems and core samples at Suiyo Seamount were determined for amino acids, and occasionally amino sugars. Two types of chimney samples were obtained from active hydrothermal systems by submersible vehicles: one was natural chimney (NC) on a hydrothermal natural vent; the other was artificial chimneys (AC), mainly formed by the growth and deposition of sulfide-rich particulate components in a Kuwabara-type in situ incubator (KI incubator). Total hydrolyzed amino acids (THAA) and hydrolyzed hexosamines (HA) in AC ranged from 10.7 nmol/g to 64.0 nmol/g and from 0 nmol/g to 8.1 nmol/g, respectively, while THAA in hydrothermally altered core samples ranged from 26.0 nmol/g to 107.4 ...

Takano,; Marumo,; K.,; Ebashi,; T.,; Gupta,; P., L; Kawahata,; H.,; Kobayashi,; K.,; Yamagishi,; A.,; Kuwabara,; T,

2013-01-01T23:59:59.000Z

342

In Situ Kinetic Study on Hydrothermal Transformation of d-Glucose into 5-Hydroxymethylfurfural through d-Fructose with 13C NMR  

Science Journals Connector (OSTI)

In Situ Kinetic Study on Hydrothermal Transformation of d-Glucose into 5-Hydroxymethylfurfural through d-Fructose with 13C NMR ... d-Glucose was found to be reversibly transformed first into d-fructose (intermediate) and successively into 5-hydroxymethylfurfural (5-HMF) through dehydration. ... We demonstrate that d-glucose is reversibly transformed into d-fructose as a first step and that d-fructose is successively dehydrated to form 5-hydroxymethylfurfural (5-HMF). ...

Hiroshi Kimura; Masaru Nakahara; Nobuyuki Matubayasi

2011-11-09T23:59:59.000Z

343

HYDROTHERMAL STABILITY OF LAYERED SILICATES IN NEUTRAL AND ACIDIC MEDIA: EFFECT ON ENGINEERED-BARRIER SAFETY  

Science Journals Connector (OSTI)

...mechanical properties of the buffer (Pusch and Yong, 2003; Pusch...for use as matrix material, backfill material, and structural components...G. (editors) (2006) Handbook of Clay Science. Developments...retention of hydrophilic clay buffer-microstructural aspects...

Mara D. Alba; Miguel A. Castro; Pablo Chain; M. Mar Orta; M. Carolina Pazos; Esperanza Pavn

344

Structure and phase transition of BiFeO{sub 3} cubic micro-particles prepared by hydrothermal method  

SciTech Connect

Graphical abstract: Bismuth ferrite (BiFeO{sub 3}) cubic micro-particles with smooth surfaces were synthesized. BiFeO{sub 3} has a hexagonal perovskite structure with a space group R3c below 370 C and rhombohedral perovskite structure with a space group R3m below 755 C, undergoes a phase transition in the temperature range of 755817 C to a cubic structure, then decompose to liquid and Fe{sub 2}O{sub 3} above 939 C. Highlights: ? BiFeO{sub 3} micro-particles with smooth surface were synthesized by hydrothermal method. ? BiFeO{sub 3} enjoys hexagonal structure with well element ratio and chemical valence. ? BiFeO{sub 3} transition from rhombohedral phase to cubic phase lasts 60 C. -- Abstract: Single-phase bismuth ferrite (BiFeO{sub 3}) powders were synthesized with a hydrothermal method by controlling the experimental conditions carefully. The powder structure, morphology and composition were characterized by using X-ray diffraction (XRD), scanning electron microscopy, transmission electron microscope, Raman measurement and X-ray photoelectron spectroscopy. The particles change from irregular agglomerations to regular cubes with increasing KOH concentration. The large BiFeO{sub 3} cubic particles enjoy much smooth surfaces with well-matched element ratio (Bi:Fe:O = 1:1:3) and chemical valence (Bi{sup 3+}, Fe{sup 3+} and O{sup 2?}). The high temperature XRD and differential scanning calorimetry show that BiFeO{sub 3} powders have a hexagonal perovskite structure with a space group R3c below 370 C and a rhombohedral structure with a space group R3m below 755 C. BiFeO{sub 3} undergoes a phase transition in the temperature range of 755817 C from rhombohedral structure to a cubic phase, then decomposes to liquid and Fe{sub 2}O{sub 3} above 939 C.

Zhou, Jian-Ping, E-mail: zhoujp@snnu.edu.cn [College of Physics and Information Technology, Shaanxi Normal University, Xian 710062 (China)] [College of Physics and Information Technology, Shaanxi Normal University, Xian 710062 (China); Yang, Ruo-Lin; Xiao, Rui-Juan; Chen, Xiao-Ming [College of Physics and Information Technology, Shaanxi Normal University, Xian 710062 (China)] [College of Physics and Information Technology, Shaanxi Normal University, Xian 710062 (China); Deng, Chao-Yong [Department of Electronic Science, Guizhou University, Guizhou Guiyang 550025 (China)] [Department of Electronic Science, Guizhou University, Guizhou Guiyang 550025 (China)

2012-11-15T23:59:59.000Z

345

Synthesis of nanocrystalline barium-hexaferrite from nanocrystalline goethite using the hydrothermal method: Particle size evolution and magnetic properties  

SciTech Connect

To characterize particle size/magnetic property relationships, 9 to 50 nm in diameter barium hexaferrite, BaFe{sub 12}O{sub 19} (BHF), particles were prepared using a new synthesis route. By replacing the conventional 50 to 100 nm particles of goethite with nanocrystalline goethite produced via the microwave anneal method of Knight and Sylva, nanocrystalline BHF was synthesized using the hydrothermal method. Evolution of particle size and morphology with respect to concentration and heat treatment time is reported. Hysteresis properties, including coercivity (0.2--1.0 kOe), magnetization saturation (0.1--33.4 emu/g), and magnetization remanence (0.004--22.5 emu/g) are discussed as a function of particle size. The magnetization saturation and remanence of the 7 nm particles is nearly zero, suggesting the superparamagnetic threshold size for BHF is around this size. In addition, the equilibrium morphology of BHF crystals was calculated to be truncated hexagonal prisms which was verified by experiment, and the isoelectric point, pH of 4.1, was measured for 18 nm BHF particles.

Penn, R.L.; Banfield, J.F. [Univ. of Wisconsin, Madison, WI (United States); Voigt, J. [Sandia National Labs., Albuquerque, NM (United States). Ceramic Synthesis and Inorganic Chemistry Dept.

1997-03-01T23:59:59.000Z

346

Geochemical modeling of the near-surface hydrothermal system beneath the southern moat of Long Valley Caldera, California  

Science Journals Connector (OSTI)

Geochemical reaction path and mass balance modeling techniques were used to test the hypothesis that an eastwardly flowing plume of thermal water in the southern moat of the Long Valley caldera system reacts with hydrothermally altered intra-caldera tuffs and mixes with non-thermal groundwater. Our conceptual model is based on hypotheses in the literature and published geochemical and petrologic data. Mixing of thermal and non-thermal waters and reaction with wall rock were simulated using the reaction path code EQ3/6. Mass balance calculations were conducted to estimate the extent of waterrock interaction between the intra-caldera tuffs and fluids. A mixing ratio of 82% thermal and 18% non-thermal water reacting with altered tuff minerals closely matches Casa Diablo fluid compositions and minerals observed in petrographic studies. Results of this study show that the mineralogy and fluid chemistry observed in the shallow reservoir at Long Valley caldera are formed in an open system. Further, calcite precipitated in the system serves as a sink for high levels of CO2 generated by the deeper magmatic system. Our study serves as an example that processes acting in a geothermal system can be effectively quantified using geochemical modeling and mass balance calculations.

Regina N. Tempel; Daniel M. Sturmer; Jill Schilling

2011-01-01T23:59:59.000Z

347

Preparation of titania nanotube-Cd0.65Zn0.35S nanocomposite by a hydrothermal sulfuration method for efficient visible-light-driven photocatalytic hydrogen production  

Science Journals Connector (OSTI)

Abstract Titania nanotube-Cd0.65Zn0.35S nanocomposite (Cd0.65Zn0.35S-TiO2) was synthesized from titanate nanotubes for ion change of Cd2+ and Zn2+ followed by hydrothermal sulfuration treatment using thiourea as sulfur source. The Cd0.65Zn0.35S-TiO2 with enhanced crystallinity of TiO2 nanotube can be obtained by increasing hydrothermal temperature from 90C to 120C. And further increasing hydrothermal temperature to 150C, TiO2 nanotubes collapse and transform into irregular shaped particles. The photocatalytic activity for hydrogen production of the prepared Cd0.65Zn0.35S-TiO2 with different hydrothermal temperature was investigated under visible-light irradiation. The result shows that the Cd0.65Zn0.35S-TiO2 with hydrothermal temperature of 120C presents the highest hydrogen evolution rate and photostability, which can be attributed to a rapid charge transfer at the interface between Cd0.65Zn0.35S and TiO2 nanotube due to the increased crystallinity and unique 1-D nanotubular structure of TiO2.

Juan Li; Liangpeng Wu; Lizhen Long; Min Xi; Xinjun Li

2014-01-01T23:59:59.000Z

348

Characterization, properties and catalytic application of TiO{sub 2} nanotubes prepared by ultrasonic-assisted sol-hydrothermal method  

SciTech Connect

Graphical abstract: A novel class of titania nanotubes (TNTs) have been prepared by ultrasonic assisted sol-hydrothermal method using tetrabutyl titanate and ethanol as the precursors. The physicochemical characteristics of the catalysts were investigated by transmission electron microscopy, X-ray diffraction, BrunauerEmmettTeller method, Differential Scanning Calorimeters-Thermogravimetric Analysis (DSCTG) and UVvis absorption spectra. The photocatalytic activity of the products was evaluated in terms of reactive brilliant red X-3B in an aqueous solution under UV irradiation for 1 h. The results showed that the catalyst revealed an excellent photocatalytic activity. The degradation rate of reactive brilliant X-3B could be up to 96%. Display Omitted Highlights: ? TiO{sub 2} nanotubes were prepared by ultrasonic-assisted sol-hydrothermal method. ? TEM, HRTEM, XRD, and BET were used to study morphology and crystalline structure. ? FTIR, DSC-TG was used to investigate pyrolytic process and phase structure. ? UVvis absorption spectra were used to evaluate the photocatalysis of catalysts. ? Dye degradation result showed that the catalyst had excellent photocatalytic activity. -- Abstract: A novel class of titania nanotubes (TNTs) have been prepared by ultrasonic assisted sol-hydrothermal method using tetrabutyl titanate and ethanol as the precursors. The physicochemical characteristics of the catalysts were investigated by transmission electron microscopy (TEM), X-ray diffraction (XRD), BrunauerEmmettTeller (BET) method, Differential Scanning Calorimeters-Thermogravimetric Analysis (DSC-TG) and UVvis absorption spectra. The photocatalytic activity of the products was evaluated in terms of reactive brilliant red X-3B in an aqueous solution under UV irradiation for 1 h. The results showed that the anatase nanotubes prepared by ultrasonic assisted sol-hydrothermal method exhibited excellent photocatalytic activity. The degradation rate of reactive brilliant X-3B could be up to 96%. The high degradation rate was attributed to the good crystalline pure-phase structure of nanotubes caused by ultrasound. Furthermore, the large surface areas also played an important role in the high degradation rate.

Chen, Jinyuan; Wang, Huijuan [College of Biological and Environmental Engineering, Zhejiang University of Technology, No. 18 ChaoWang Rd., Hangzhou (China)] [College of Biological and Environmental Engineering, Zhejiang University of Technology, No. 18 ChaoWang Rd., Hangzhou (China); Wei, Xiuzhen, E-mail: xzwei@zjut.edu.cn [College of Biological and Environmental Engineering, Zhejiang University of Technology, No. 18 ChaoWang Rd., Hangzhou (China)] [College of Biological and Environmental Engineering, Zhejiang University of Technology, No. 18 ChaoWang Rd., Hangzhou (China); Zhu, Liping [State Key Lab of Silicon Materials, Zhejiang University, Hangzhou 310027 (China)] [State Key Lab of Silicon Materials, Zhejiang University, Hangzhou 310027 (China)

2012-11-15T23:59:59.000Z

349

Precipitation of uraninite in chlorite-bearing veins of the hydrothermal alteration zone (argile de pile) of the natural nuclear reactor at Bangombe, Republic of Gabon  

SciTech Connect

This paper describes the mineralogy of a phyllosilicate/uraninite/galena-bearing vein located within the hydrothermal alteration halo associated with the Bangombe reactor. Phyllosilicates within the vein include a trioctahedral Al-Mg-Fe chlorite (ripidolite), Al-rich clay (kaolinite and/or donbassite) and illite. Textural relations obtained by backscattered-electron imaging suggest that ripidolite crystallized first among the sheet silicates. Uraninite is spatially associated with ripidolite and probably precipitated at a later time. While energy-dispersive X-ray analyses suggest that the uranium phase is predominantly uraninite, coffinite or other phases may also be present.

Eberly, P.; Ewing, R. [Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Earth and Planetary Sciences; Janeczek, J. [Silesian Univ., Sosnowiec (Poland). Dept. of Earth Sciences

1995-12-31T23:59:59.000Z

350

1-Dodecane-sulfonic-acid-sodium-salt(LAS) assisted hydrothermal synthesis of Cd{sub x}Zn{sub 1-x}S solid solution as efficient photocatalysts under visible light irradiation  

SciTech Connect

With anionic surfactant LAS assisted, series of zinc cadmium sulfide semiconductor photocatalysts were synthesized by hydrothermal method. These products were characterized by X-ray diffraction (XRD), UV-Vis absorption spectra (UV-Vis) and scanning electron microscopy (FESEM). The photocatalytic activities of as-prepared samples were evaluated by photocatalytic hydrogen production from water under visible-light irradiation. The best synthesis parameters are: Composition 0.9:0.1 (Cd:Zn molar ratio), Temperature 160 deg. C, Hydrothermal Time 48 Hour, LAS Concentration 1.7 mmol/L, the maximum visible-light-catalytic hydrogen production rate is 161.25 {mu}mol/h (lambda>430 nm) which is higher than those of by coprecipitation method. The experiment results indicate that surfactant assisted hydrothermal method is an effective way to get highly active CdZnS solid solution photocatalyst.

Jia, B.; Guo, L. J. [State Key Laboratory of Multiphase Flow in power Engineering, Xi'an Jiaotong University (China)

2010-03-01T23:59:59.000Z

351

The thermal conductivity of rock under hydrothermal conditions: measurements and applications  

SciTech Connect

The thermal conductivities of most major rock-forming minerals vary with both temperature and confining pressure, leading to substantial changes in the thermal properties of some rocks at the high temperatures characteristic of geothermal systems. In areas with large geothermal gradients, the successful use of near-surface heat flow measurements to predict temperatures at depth depends upon accurate corrections for varying thermal conductivity. Previous measurements of the thermal conductivity of dry rock samples as a function of temperature were inadequate for porous rocks and susceptible to thermal cracking effects in nonporous rocks. We have developed an instrument for measuring the thermal conductivity of water-saturated rocks at temperatures from 20 to 350 C and confining pressures up to 100 MPa. A transient line-source of heat is applied through a needle probe centered within the rock sample, which in turn is enclosed within a heated pressure vessel with independent controls on pore and confining pressure. Application of this technique to samples of Franciscan graywacke from The Geysers reveals a significant change in thermal conductivity with temperature. At reservoir-equivalent temperatures of 250 C, the conductivity of the graywacke decreases by approximately 25% relative to the room temperature value. Where heat flow is constant with depth within the caprock overlying the reservoir, this reduction in conductivity with temperature leads to a corresponding increase in the geothermal gradient. Consequently, reservoir temperature are encountered at depths significantly shallower than those predicted by assuming a constant temperature gradient with depth. We have derived general equations for estimating the thermal conductivity of most metamorphic and igneous rocks and some sedimentary rocks at elevated temperature from knowledge of the room temperature thermal conductivity. Application of these equations to geothermal exploration should improve estimates of subsurface temperatures derived from heat flow measurements.

Williams, Colin F.; Sass, John H.

1996-01-24T23:59:59.000Z

352

Low-temperature hydrothermal alteration of intra-caldera tuffs, Miocene Tejeda caldera, Gran Canaria, Canary Islands  

Science Journals Connector (OSTI)

The Miocene Tejeda caldera on Gran Canaria erupted ~20 rhyolitetrachyte ignimbrites (Mogn Group 1413.3Ma), followed by ~20 phonolitic lava flows and ignimbrites (Fataga Group 138.5Ma). Upper-Mogn tuffs have been severely altered immediately within the caldera margin, whereas extra-caldera Mogn ignimbrites, and overlying Fataga units, are apparently unaltered. The altered intra-caldera samples contain minerals characteristic of secondary fluidrock interaction (clays, zeolites, adularia), and relics of the primary mineral assemblage identified in unaltered ignimbrites (K-feldspar, plagioclase, pyroxene, amphibole, and groundmass quartz). Major and trace-element data indicate that Si, Na, K, Pb, Sr, and Rb, were strongly mobilized during fluidrock interaction, whereas Ti, Zr, and Nb behaved in a more refractory manner, experiencing only minor mobilization. The ?18O values of the altered intra-caldera tuffs are significantly higher than in unaltered extra-caldera ignimbrites, consistent with an overall low-temperature alteration environment. Unaltered extra-caldera ignimbrites have ?D values between ?110 and ?173, which may reflect Rayleigh-type magma degassing and/or post-depositional vapour release. The ?D values of the altered intra-caldera tuffs range from ?52 to ?131, with ambient meteoric water at the alteration site estimated at ca. ?15. Interaction and equilibration of the intra-caldera tuffs with ambient meteoric water at low temperature can only account for whole-rock ?D values of around ?45, given that ?Dclaywater is ca. ?30 at 100C, and decreases in magnitude at higher temperatures. All altered tuff samples have ?D values that are substantially lower than ?45, indicating interaction with a meteoric water source with a ?D value more negative than ?15, which may have been produced in low-temperature steam fumaroles. Supported by numerical modeling, our Gran Canaria data reflect the near-surface, epithermal part of a larger, fault-controlled hydrothermal system associated with the emplacement of the high-level Fataga magma chamber system. In this near-surface environment, fluid temperatures probably did not exceed 200250C.

Eleanor Donoghue; Valentin R. Troll; Chris Harris; Aoife O'Halloran; Thomas R. Walter; Francisco J. Prez Torrado

2008-01-01T23:59:59.000Z

353

Phase transition process and luminescent properties of undoped and Dy3+ ion doped orthorhombic PbF2 prepared by a hydrothermal method  

Science Journals Connector (OSTI)

Abstract Orthorhombic (?) \\{SSPbF2\\} microcrystal was synthesized by a normal hydrothermal method. The influence of F/Pb ratio and hydrothermal reaction time on the crystal phase of the acquired PbF2 samples were discussed, and a ? to ? phase transition was found according to the XRD results. The undoped ?-PbF2 powder showed a broad but weak emission band around 450570nm, which was due to (Pb2)3+ nearest neighbor pair centers. Dy3+ ion doped ?-PbF2 samples showed main emission bands at 480nm and 574nm, which were assigned to the transitions from 4F9/2 to 6H15/2 and 6H13/2 of Dy3+, respectively. Furthermore, the morphology and crystalline properties of the undoped and Dy3+ doped ?-PbF2 microcrystal powder were also discussed carefully. The decay time results combined with the X-ray excitation results suggested that Dy3+ ion doped ?-PbF2 is a useful scintillating material for high energy physics applications, such as X-ray scintillating panel, etc.

Guanghui Liu; Zhenzhen Zhou; Fan Fei; Qinhua Wei; Hua Yang; Qian Liu

2015-01-01T23:59:59.000Z

354

Ultra-fast microwave-assisted hydrothermal synthesis of long vertically aligned ZnO nanowires for dye-sensitized solar cell application  

Science Journals Connector (OSTI)

Long vertically aligned ZnO nanowire arrays were synthesized using an ultra-fast microwave-assisted hydrothermal process. Using this method, we were able to grow ZnO nanowire arrays at an average growth rate as high as 200nmmin?1 for maximum microwave power level. This method does not suffer from the growth stoppage problem at long growth times that, according to our investigations, a normal microwave-assisted hydrothermal method suffers from. Longitudinal growth of the nanowire arrays was investigated as a function of microwave power level and growth time using cross-sectional FESEM images of the grown arrays. Effect of seed layer on the alignment of nanowires was also studied. X-ray diffraction analysis confirmed c-axis orientation and single-phase wurtzite structure of the nanowires. JV curves of the fabricated ZnO nanowire-based mercurochrome-sensitized solar cells indicated that the short-circuit current density is increased with increasing the length of the nanowire array. According to the UVvis spectra of the dyes detached from the cells, these increments were mainly attributed to the enlarged internal surface area and therefore dye loading enhancement in the lengthened nanowire arrays.

S M Mahpeykar; J Koohsorkhi; H Ghafoori-fard

2012-01-01T23:59:59.000Z

355

Discussion on the Low Temperature Magnetothermal Conductivity in Lightly Doped Ge(Sb) and Ge(As)  

Science Journals Connector (OSTI)

Some time ago we reported1) measurements of magnetothermal conductivity in n-type Ge in the temperature range 1.3?T?...1): For Ge(Sb) with the field Bll ...o, is negative, increases in magnitude approximatel...

Leif Halbo

1976-01-01T23:59:59.000Z

356

Journal of the Geological Society, London, Vol. 168, 2011, pp. 805815. doi: 10.1144/0016-76492010-132. Hydrothermal origin of elevated iron, manganese and redox-sensitive trace  

E-Print Network (OSTI)

.1144/0016-76492010-132. 805 Hydrothermal origin of elevated iron, manganese and redox-sensitive trace elements in the c. 635 Ma Doushantuo cap carbonate JING HUANG1,2 , XUELEI CHU1,2 *, GANQING JIANG3 , LIANJUN FENG1 & HUAJIN, including REE, concentrations of the Doushantuo cap carbonate (c. 635 Ma) in South China show enrichment

Jiang, Ganqing

357

Hydrothermal Resources Fact Sheet  

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

Geophysics Potential fields methods (e.g. gravity, magnetics, magnetotellurics), heat flow mapping, and advanced seismic techniques along with improvements in interpreting...

358

Property:GEADevelopmentPhase | Open Energy Information  

Open Energy Info (EERE)

GEADevelopmentPhase GEADevelopmentPhase Jump to: navigation, search Property Name GEADevelopmentPhase Property Type Page Description GEA Development Phase, as characterized by their Annual U.S. Geothermal Power Production and Development Report. See GEA_Development_Phases Allows Values Phase I - Resource Procurement and Identification;Phase II - Resource Exploration and Confirmation;Phase III - Permitting and Initial Development;Phase IV - Resource Production and Power Plant Construction Subproperties This property has the following 77 subproperties: A Abraham Hot Springs Geothermal Area Adak Geothermal Area Akun Strait Geothermal Area Akutan Fumaroles Geothermal Area Alum Geothermal Area Alvord Hot Springs Geothermal Area Amedee Geothermal Area Arrowhead Hot Springs Geothermal Area

359

Fe isotope fractionation during phase separation in the NaClH2O system: An experimental study with implications for seafloor hydrothermal vents  

Science Journals Connector (OSTI)

Abstract Phase separation has been proposed as a possible mechanism contributing to the Fe isotope composition of hydrothermal fluids at mid-ocean ridges. The uncertainty results largely from the emphasis on field data that can involve competing processes that obscure cause and effect of any one process. To better understand the potential significance of phase separation in the NaClFeH2O system on Fe isotope fractionation, temperature and pressure of a Fe-bearing NaCl fluid in a titanium flow reactor were carefully adjusted to produce vapor liquid halite, while the Fe isotope composition between coexisting phases was monitored. Two different PT regions were emphasized: (1) 424420?C, 35.231.5 MPa; and (2) 464466?C, 29.824.7 MPa. Both regions were chosen to simulate the range of physical conditions that are experienced by hydrothermal fluids at mid-ocean ridges (MORs). Decompression induced phase separation in both PT regions results in the vapor phase becoming enriched in the heavier isotopes of Fe, as the Fe/Cl ratio decreases. The coexisting NaCl-rich liquid phase remains essentially constant with respect to Fe/Cl ratio and Fe isotope composition. Coinciding with the lowest vapor chlorinity in the vaporliquid stability field, the Fe/Cl ratio of the vapor abruptly increases, while the Fe isotope fractionation between the vapor and liquid ( 10 3 ln ? ? V / L 56 / 54 ) reached a maximum value of + 0.145 0.048 . Subsequently, Fe isotope fractionation decreased upon transition into the vaporhalite stability field (PT region 2). We infer that the observed Fe isotope fractionation between vapor liquid halite is caused by differences in Fe speciation among coexisting chloride-bearing phases. The experimental study confirms for the first time that measurable Fe isotope variability can result from phase separation in high temperature hydrothermal systems. The species-dependent Fe isotope fractionation reported here is small relative to predicted mineralmineral and mineralfluid fractionations, especially if redox effects are involved as might occur during vent fluidseawater mixing reactions and/or magmatic activity associated with seafloor eruptive episodes.

Drew D. Syverson; Nicholas J. Pester; Paul R. Craddock; William E. Seyfried Jr.

2014-01-01T23:59:59.000Z

360

Geothermal Materials Development, Annual Report FY 1991  

SciTech Connect

Advances in the development of new materials, the commercial availabilities of which are essential for the attainment of Hydrothermal Category Level I and II Objectives, continue to be made in the Geothermal Materials Development Project. Many successes have already been accrued and the results used commercially. In FY 1991, utility company sponsored full cost'' recovery programs based upon materials technology developed in this project were initiated on topics such as condensing heat exchangers, high temperature composites for utility vaults used in district heating systems, and corrosion resistant coatings for use in oil-fired electric generating processes. In FY 1991 the DOE/GD-sponsored R D project was focused on reducing well drilling, fluid transport and energy conversion costs. Specific activities being performed included lightweight CO{sub 2}- resistant well cements, chemical systems for lost circulation control, thermally conductive and scale resistant protective linear systems, corrosion mitigation in process components at The Geysers, and elastomer-metal bonding systems needed for use in high temperature well drilling and safety related applications.

Kukacka, L.E.

1991-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" 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.


361

Geothermal Materials Development. Annual report FY 1991  

SciTech Connect

Advances in the development of new materials, the commercial availabilities of which are essential for the attainment of Hydrothermal Category Level I and II Objectives, continue to be made in the Geothermal Materials Development Project. Many successes have already been accrued and the results used commercially. In FY 1991, utility company sponsored ``full cost`` recovery programs based upon materials technology developed in this project were initiated on topics such as condensing heat exchangers, high temperature composites for utility vaults used in district heating systems, and corrosion resistant coatings for use in oil-fired electric generating processes. In FY 1991 the DOE/GD-sponsored R&D project was focused on reducing well drilling, fluid transport and energy conversion costs. Specific activities being performed included lightweight CO{sub 2}- resistant well cements, chemical systems for lost circulation control, thermally conductive and scale resistant protective linear systems, corrosion mitigation in process components at The Geysers, and elastomer-metal bonding systems needed for use in high temperature well drilling and safety related applications.

Kukacka, L.E.

1991-12-01T23:59:59.000Z

362

Ris-R-1110(EN) Further Development of Chemical and  

E-Print Network (OSTI)

of convertible cellulose. For birchwood, the best process conditions were hydrothermal treatment (without oxygen, some residual total organic carbon presumably high molecular weight components remained unidentified

363

Complete genome sequence of the aerobic, heterotroph Marinithermus hydrothermalis type strain (T1T) from a deep-sea hydrothermal vent chimney  

SciTech Connect

Marinithermus hydrothermalis Sako et al. 2003 is the type species of the monotypic genus Marinithermus. M. hydrothermalis T1 T was the first isolate within the phylum ThermusDeinococcus to exhibit optimal growth under a salinity equivalent to that of sea water and to have an absolute requirement for NaCl for growth. M. hydrothermalis T1 T is of interest because it may provide a new insight into the ecological significance of the aerobic, thermophilic decomposers in the circulation of organic compounds in deep-sea hydrothermal vent ecosystems. This is the first completed genome sequence of a member of the genus Marinithermus and the seventh sequence from the family Thermaceae. Here we describe the features of this organism, together with the complete genome sequence and annotation. The 2,269,167 bp long genome with its 2,251 protein-coding and 59 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project.

Copeland, A [U.S. Department of Energy, Joint Genome Institute; Gu, Wei [U.S. Department of Energy, Joint Genome Institute; Yasawong, Montri [HZI - Helmholtz Centre for Infection Research, Braunschweig, Germany; Lapidus, Alla L. [U.S. Department of Energy, Joint Genome Institute; Lucas, Susan [U.S. Department of Energy, Joint Genome Institute; Deshpande, Shweta [U.S. Department of Energy, Joint Genome Institute; Pagani, Ioanna [U.S. Department of Energy, Joint Genome Institute; Tapia, Roxanne [Los Alamos National Laboratory (LANL); Cheng, Jan-Fang [U.S. Department of Energy, Joint Genome Institute; Goodwin, Lynne A. [Los Alamos National Laboratory (LANL); Pitluck, Sam [U.S. Department of Energy, Joint Genome Institute; Liolios, Konstantinos [U.S. Department of Energy, Joint Genome Institute; Ivanova, N [U.S. Department of Energy, Joint Genome Institute; Mavromatis, K [U.S. Department of Energy, Joint Genome Institute; Mikhailova, Natalia [U.S. Department of Energy, Joint Genome Institute; Pati, Amrita [U.S. Department of Energy, Joint Genome Institute; Chen, Amy [U.S. Department of Energy, Joint Genome Institute; Palaniappan, Krishna [U.S. Department of Energy, Joint Genome Institute; Land, Miriam L [ORNL; Pan, Chongle [ORNL; Brambilla, Evelyne-Marie [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Rohde, Manfred [HZI - Helmholtz Centre for Infection Research, Braunschweig, Germany; Tindall, Brian [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Sikorski, Johannes [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Goker, Markus [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Detter, J. Chris [U.S. Department of Energy, Joint Genome Institute; Bristow, James [U.S. Department of Energy, Joint Genome Institute; Eisen, Jonathan [U.S. Department of Energy, Joint Genome Institute; Markowitz, Victor [U.S. Department of Energy, Joint Genome Institute; Hugenholtz, Philip [U.S. Department of Energy, Joint Genome Institute; Kyrpides, Nikos C [U.S. Department of Energy, Joint Genome Institute; Klenk, Hans-Peter [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Woyke, Tanja [U.S. Department of Energy, Joint Genome Institute

2012-01-01T23:59:59.000Z

364

Complete genome sequence of Thermovibrio ammonificans HB-1T, a thermophilic, chemolithoautotrophic bacterium isolated from a deep-sea hydrothermal vent  

SciTech Connect

Thermovibrio ammonificans type strain HB-1T is a thermophilic (Topt: 75 C), strictly anaero- bic, chemolithoautotrophic bacterium that was isolated from an active, high temperature deep-sea hydrothermal vent on the East Pacific Rise. This organism grows on mineral salts medium in the presence of CO2/H2, using NO3- or S0 as electron acceptors, which are re- duced to ammonium or hydrogen sulfide, respectively. T. ammonificans is one of only three species within the genus Thermovibrio, a member of the family Desulfurobacteriaceae, and it forms a deep branch within the phylum Aquificae. Here we report the main features of the genome of T. ammonificans strain HB-1T (DSM 15698T).

Giovannelli, Donato [Rutgers University; Ricci, Jessica [Rutgers University; Perez-Rodriguez, Ileana [Rutgers University; Hugler, Michael [Woods Hole Oceanographic Institution (WHOI), Woods Hole, MA; O'Brien, Charles [Rutgers University; Keddis, Ramaydalis [Rutgers University; Grosche, Ashley [Rutgers University; Goodwin, Lynne A. [Los Alamos National Laboratory (LANL); Bruce, David [Los Alamos National Laboratory (LANL); Davenport, Karen W. [Los Alamos National Laboratory (LANL); Detter, J. Chris [U.S. Department of Energy, Joint Genome Institute; Han, James [U.S. Department of Energy, Joint Genome Institute; Han, Cliff [Los Alamos National Laboratory (LANL); Ivanova, N [U.S. Department of Energy, Joint Genome Institute; Land, Miriam L [ORNL; Mikhailova, Natalia [U.S. Department of Energy, Joint Genome Institute; Nolan, Matt [U.S. Department of Energy, Joint Genome Institute; Pitluck, Sam [U.S. Department of Energy, Joint Genome Institute; Tapia, Roxanne [Los Alamos National Laboratory (LANL); Woyke, Tanja [U.S. Department of Energy, Joint Genome Institute; Vetriani, Costantino [Rutgers University

2012-01-01T23:59:59.000Z

365

Xanes Study of Hydrothermal Mo-V-Based Mixed Oxide M1-Phase Catalysts for the (Amm)oxidation of propane  

SciTech Connect

The hydrothermal Mo-V-based mixed oxide catalysts possessing the M1-phase structure were investigated by XANES and in situ X-ray diffraction under ambient and dynamic redox conditions in the presence of O{sub 2} and H{sub 2} at 693 K. Under ambient conditions, XANES, with the use of model compounds, suggested oxidation states of Nb, Te, Mo, and V close to 5+, 4+, 6+, and 4+, respectively, in the bulk M1 phase. The oxidation state changes of Nb, Te, and Mo were not detected under the dynamic redox conditions employed, while the pre-edge peak of vanadium in the M1 phase exhibited small, reproducible shifts, suggesting that VO{sub x} is the active catalytic species in the bulk M1-phase catalysts for selective (amm)oxidation of propane.

Shiju, N.R. [University of Cincinnati; Rondinone, Adam Justin [ORNL; Overbury, Steven {Steve} H [ORNL; Mullins, David R [ORNL; Schwartz, Viviane [ORNL; Guliants, Vadim V. [University of Cincinnati

2008-01-01T23:59:59.000Z

366

XANES Study of Hydrothermal Mo-V-Based Mixed Oxide M1-Phase Catalysts for the (Amm)oxidation of Propane  

SciTech Connect

The hydrothermal Mo-V-based mixed oxide catalysts possessing the M1-phase structure were investigated by XANES and in situ X-ray diffraction under ambient and dynamic redox conditions in the presence of O{sub 2} and H{sub 2} at 693 K. Under ambient conditions, XANES, with the use of model compounds, suggested oxidation states of Nb, Te, Mo, and V close to 5+, 4+, 6+, and 4+, respectively, in the bulk M1 phase. The oxidation state changes of Nb, Te, and Mo were not detected under the dynamic redox conditions employed, while the pre-edge peak of vanadium in the M1 phase exhibited small, reproducible shifts, suggesting that VO{sub x} is the active catalytic species in the bulk M1-phase catalysts for selective (amm)oxidation of propane.

Shuju, N.; Rondinone, A; Mullins, D; Schwartz, V; Overbury, S; Gulaints, V

2008-01-01T23:59:59.000Z

367

Xanes Study of Hydrothermal Mo-V-Based Mixed Oxide M1-Phase Catalysts for the (Amm)oxidation of Propane  

SciTech Connect

The hydrothermal Mo-V-based mixed oxide catalysts possessing the M1-phase structure were investigated by XANES and in situ X-ray diffraction under ambient and dynamic redox conditions in the presence of O{sub 2} and H{sub 2} at 693 K. Under ambient conditions, XANES, with the use of model compounds, suggested oxidation states of Nb, Te, Mo, and V close to 5+, 4+, 6+, and 4+, respectively, in the bulk M1 phase. The oxidation state changes of Nb, Te, and Mo were not detected under the dynamic redox conditions employed, while the pre-edge peak of vanadium in the M1 phase exhibited small, reproducible shifts, suggesting that VO{sub x} is the active catalytic species in the bulk M1-phase catalysts for selective (amm)oxidation of propane.

Mullins, David R [ORNL; Overbury, Steven {Steve} H [ORNL; Rondinone, Adam Justin [ORNL; Schwartz, Viviane [ORNL; Guliants, Vadim [ORNL; Shiju, N.R. [University of Cincinnati

2008-01-01T23:59:59.000Z

368

High resolution FT-ICR mass spectral analysis of bio-oil and residual water soluble organics produced by hydrothermal liquefaction of the marine microalga Nannochloropsis salina  

SciTech Connect

We report a detailed compositional characterization of a bio-crude oil and aqueous by-product from hydrothermal liquefaction of Nannochloropsis salina by direct infusion Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR MS) in both positive- and negative-ionization modes. The FT-ICR MS instrumentation approach facilitates direct assignment of elemental composition to >7000 resolved mass spectral peaks and three-dimensional mass spectral images for individual heteroatom classes highlight compositional diversity of the two samples and provide a baseline description of these materials. Aromatic nitrogen compounds and free fatty acids are predominant species observed in both the bio-oil and aqueous fraction. Residual organic compounds present in the aqueous fraction show distributions that are slightly lower in both molecular ring and/or double bond value and carbon number relative to those found in the bio-oil, albeit with a high degree of commonality between the two compositions.

Sudasinghe, Nilusha; Dungan, Barry; Lammers, Peter; Albrecht, Karl O.; Elliott, Douglas C.; Hallen, Richard T.; Schaub, Tanner

2014-03-01T23:59:59.000Z

369

A National-Scale Comparison of Resource and Nutrient Demands for Algae-Based Biofuel Production by Lipid Extraction and Hydrothermal Liquefaction  

SciTech Connect

Algaes high productivity provides potential resource advantages over other fuel crops. However, demand for land, water, and nutrients must be minimized to avoid impacts on food production. We apply our national-scale, open-pond, growth and resource models to assess several biomass to fuel technological pathways based on Chlorella. We compare resource demands between hydrothermal liquefaction (HTL) and lipid extraction (LE) to meet 1.89E+10 and 7.95E+10 L yr-1 biofuel targets. We estimate nutrient demands where post-fuel biomass is consumed as co-products and recycling by anaerobic digestion (AD) or catalytic hydrothermal gasification (CHG). Sites are selected through prioritization based on fuel value relative to a set of site-specific resource costs. The highest priority sites are located along the Gulf of Mexico coast, but potential sites exist nationwide. We find that HTL reduces land and freshwater consumption by up to 46% and saline groundwater by around 70%. Without recycling, nitrogen (N) and phosphorous (P) demand is reduced 33%, but is large relative to current U.S. agricultural consumption. The most nutrient-efficient pathways are LE+CHG for N and HTL+CHG for P (by 42%). Resource gains for HTL+CHG are offset by a 344% increase in N consumption relative to LE+CHG (with potential for further recycling). Nutrient recycling is essential to effective use of alternative nutrient sources. Modeling of utilization availability and costs remains, but we find that for HTL+CHG at the 7.95E+10 L yr-1 production target, municipal sources can offset 17% of N and 40% of P demand and animal manures can generally meet demands.

Venteris, Erik R.; Skaggs, Richard; Wigmosta, Mark S.; Coleman, Andre M.

2014-03-01T23:59:59.000Z

370

Development of a Plan to Implement Enhanced Geothermal Systems (EGS) in the Animas Valley, New Mexico - Final Report - 07/26/2000 - 02/01/2001  

SciTech Connect

The concept of producing energy from hot dry rock (HDR), originally proposed in 1971 at the Los Alamos National Laboratory, contemplated the generation of electric power by injecting water into artificially created fractures in subsurface rock formations with high heat flow. Recognizing the inherent difficulties associated with HDR, the concept of Enhanced Geothermal Systems was proposed. This embraces the idea that the amount of permeability and fluid in geothermal resources varies across a spectrum, with HDR at one end, and conventional hydrothermal systems at the other. This report provides a concept for development of a ''Combined Technologies Project'' with construction and operation of a 6 MW (net) binary-cycle geothermal power plant that uses both the intermediate-depth hydrothermal system at 1,200 to 3,300 feet and a deeper EGS capable system at 3,000 to 4,000 feet. Two production/injection well pairs will be drilled, one couplet for the hydrothermal system, and one for the E GS system. High-pressure injection may be required to drive fluid through the EGS reservoir from the injection to the production well.

Schochet, Daniel N.; Cunniff, Roy A.

2001-02-01T23:59:59.000Z

371

GeoChip-based analysis of metabolic diversity of microbial communities at the Juan de Fuca Ridge hydrothermal vent  

Science Journals Connector (OSTI)

...originally isolated from geothermal ground water...metabolism in the geothermal environment. However...observed during the development of vent chimneys...38 Wu L ( 2004 ) Development and evaluation of microarray-based...Department of Energy under the Genomics...and Environmental Research, Office of...

Fengping Wang; Huaiyang Zhou; Jun Meng; Xiaotong Peng; Lijing Jiang; Ping Sun; Chuanlun Zhang; Joy D. Van Nostrand; Ye Deng; Zhili He; Liyou Wu; Jizhong Zhou; Xiang Xiao

2009-01-01T23:59:59.000Z

372

SUSTAINABLE DEVELOPMENT  

E-Print Network (OSTI)

Report on SUSTAINABLE DEVELOPMENT 2 0 1 1 ­ 2 0 1 2 ISCN-GULF Charter Report #12;3 1. FACILITIES with projects of our University's Cell for Sustainable Development; it also presents evidence for steady alike. THIS REPORT This is the second report on sustainable development at the University of Luxembourg

van der Torre, Leon

373

SUSTAINABLE DEVELOPMENT  

Science Journals Connector (OSTI)

SUSTAINABLE DEVELOPMENT ... Say the words "sustainable development" in most chemical industry offices and you are likely to observe a response of glazed eyes, furrowed brows, and inattentive expressions. ... "You are not going to find an extensive understanding and a thorough discourse about sustainable development taking place in a lot of companies." ...

PAIGE MARIE MORSE

1998-08-03T23:59:59.000Z

374

H2O CO2 CH4-BEARING FLUID INCLUSIONS IN QUARTZ: INSIGHTS INTO THE ORIGIN AND EVOLUTION OF TWO DIFFERENT HYDROTHERMAL AU DEPOSITS FROM THE EGYPTIAN EASTERN DESERT  

E-Print Network (OSTI)

DIFFERENT HYDROTHERMAL AU DEPOSITS FROM THE EGYPTIAN EASTERN DESERT ZOHEIR, B.A.1, EL-SHAZLY, Aley K.2 and laser micro-Raman spectroscopy: (i) three phase aqueous - carbonic (H2O-CO2±CH4), (ii) two-phase carbonic (CO2±CH4±N2), and (iii) two phase, CO2-bearing, aqueous inclusions. Homogenization temperatures

El-Shazly, Aley

375

Inferences on the hydrothermal system beneath the resurgent dome in Long Valley Caldera, east-central California, USA, from recent pumping tests and geochemical sampling  

Science Journals Connector (OSTI)

Quaternary volcanic unrest has provided heat for episodic hydrothermal circulation in the Long Valley caldera, including the present-day hydrothermal system, which has been active over the past 40 kyr. The most recent period of crustal unrest in this region of east-central California began around 1980 and has included periods of intense seismicity and ground deformation. Uplift totaling more than 0.7 m has been centered on the calderas resurgent dome, and is best modeled by a near-vertical ellipsoidal source centered at depths of 67 km. Modeling of both deformation and microgravity data now suggests that (1) there are two inflation sources beneath the caldera, a shallower source 710 km beneath the resurgent dome and a deeper source ?15 km beneath the calderas south moat and (2) the shallower source may contain components of magmatic brine and gas. The Long Valley Exploration Well (LVEW), completed in 1998 on the resurgent dome, penetrates to a depth of 3 km directly above this shallower source, but bottoms in a zone of 100C fluid with zero vertical thermal gradient. Although these results preclude extrapolations of temperatures at depths below 3 km, other information obtained from flow tests and fluid sampling at this well indicates the presence of magmatic volatiles and fault-related permeability within the metamorphic basement rocks underlying the volcanic fill. In this paper, we present recently acquired data from LVEW and compare them with information from other drill holes and thermal springs in Long Valley to delineate the likely flow paths and fluid system properties under the resurgent dome. Additional information from mineralogical assemblages in core obtained from fracture zones in LVEW documents a previous period of more vigorous and energetic fluid circulation beneath the resurgent dome. Although this system apparently died off as a result of mineral deposition and cooling (and/or deepening) of magmatic heat sources, flow testing and tidal analyses of LVEW water level data show that relatively high permeability and strain sensitivity still exist in the steeply dipping principal fracture zone penetrated at a depth of 2.6 km. The hydraulic properties of this zone would allow a pressure change induced at distances of several kilometers below the well to be observable within a matter of days. This indicates that continuous fluid pressure monitoring in the well could provide direct evidence of future intrusions of magma or high-temperature fluids at depths of 57 km.

Christopher D. Farrar; Michael L. Sorey; Evelyn Roeloffs; Devin L. Galloway; James F. Howle; Ronald Jacobson

2003-01-01T23:59:59.000Z

376

Program Development  

SciTech Connect

This presentation covers how to go about developing a human reliability program. In particular, it touches on conceptual thinking, raising awareness in an organization, the actions that go into developing a plan. It emphasizes evaluating all positions, eliminating positions from the pool due to mitigating factors, and keeping the process transparent. It lists components of the process and objectives in process development. It also touches on the role of leadership and the necessity for audit.

Atencio, Julian J.

2014-05-01T23:59:59.000Z

377

Economic Development  

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

to fulfill federal contracting requirements and begin 8A certification process Sunbeam Indian Art: 3,400 to develop website capabilities to increase online sales Than Povi:...

378

For Developers  

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

Developers Developers Services Overview ECS Audio/Video Conferencing Fasterdata IPv6 Network Network Performance Tools (perfSONAR) ESnet OID Registry PGP Key Service Virtual Circuits (OSCARS) OSCARS Case Study Documentation User Manual FAQ Design Specifications Functional Specifications Notifications Publications Authorization Policy Default Attributes Message Security Clients For Developers DCN/OSCARS Implementation (Aug 2007) AAA BSS Pathfinder Topology Path realization Dojo development Interfaces Links Hardware Requirements DOE Grids Service Transition Contact Us Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net For Developers DCN/OSCARS Implementation (Aug 2007)

379

Hydrothermal liquefaction of four brown macro-algae commonly found on the UK coasts: An energetic analysis of the process and comparison with bio-chemical conversion methods  

Science Journals Connector (OSTI)

Abstract Hydrothermal liquefaction (HTL) of four brown macro-algae was used to produce bio-crude and bio-char in an energy favorable way. Bio-crude yields between 9.8wt% and 17.8wt% (daf) with \\{HHVs\\} between 32 and 34MJ/kg and bio-char yields between 10.9wt% and 18.6wt% (db) with \\{HHVs\\} between 15.7 and 26.2MJ/kg were produced. A modification of the energy consumption ratio (ECR) index was attempted in order to include in the formula the calculation of the specific heat capacity of the feedstock used, as well as the increase of the specific heat capacity of water with temperature. A comparison in terms of energy output was made between the products from HTL and products from bio-chemical conversion of macro-algae such as anaerobic digestion (AD) and fermentation. The results indicate that HTL has higher energy output than fermentation and analogue of that from anaerobic digestion (7.91MJ/kgseaweed and 8.25MJ/kgseaweed from HTL and AD respectively).

K. Anastasakis; A.B. Ross

2015-01-01T23:59:59.000Z

380

Open fissure mineralization at 2600 m depth in Long Valley Exploratory Well (California) insight into the history of the hydrothermal system  

Science Journals Connector (OSTI)

Long Valley Exploratory Well, drilled into the Resurgent Dome at Long Valley Caldera (California) to explore the potential of geothermal power in an active magmatic system, achieved temperatures of only ca. 100C at 25003000 m depth, well below the range expected atop an active magma chamber. Open fissures encountered at 2600 m depth are coated by mm-sized idiomorphic quartz crystals with first- and second-order growth discontinuities. Specific growth defects indicating rapid crystallization reflect sudden changes in SiO2 supersaturation. Fluid inclusions contain low salinity (05 wt% NaCl) and low CO2 (<3 mole%) aqueous fluids, with VL homogenization temperatures of 300350C, indicating trapping at more than 200C above the ambient temperatures measured within the borehole today. Fluid composition and inclusion density varies between and within the growth zones, reflecting progressive changes in the hydrothermal system during crystallization. Episodic crystallization from supersaturated fluids is interpreted to reflect sudden changes in the convection pattern, presumably induced by seismic activity, with a more recent and dramatic reorganization resulting in convective cooling. The quartz crystals are sensitive recorders of the earlier higher temperature history, unaffected by the present-day situation.

M. Fischer; K. Rller; M. Kster; B. Stckhert; V.S. McConnell

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" 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

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

382

Software Developers  

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

Because SEED will provide a common, open-source data framework, software developers will be able to write applications that access the data in a consistent way (with proper permissions), or build functionalities onto the SEED platform in a replicable way.

383

Hydrothermal Liquefaction Oil and Hydrotreated Product from Pine Feedstock Characterized by Heteronuclear Two-Dimensional NMR Spectroscopy and FT-ICR Mass Spectrometry  

SciTech Connect

Hydrothermal liquefaction (HTL) crude oil and hydrotreated product from pine tree farm waste (forest product residual, FPR) have been analyzed by direct infusion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS) in both positive- and negative-ionization modes and high-resolution twodimensional heteronuclear 1H-13C NMR spectroscopy. FT-ICR MS resolves thousands of compounds in complex oils and provides unparalleled compositional details for individual molecules for identification of compound class (heteroatom content), type (number of rings plus double bonds to carbon or double bond equivalents (DBE) and carbon number (degree of alkylation). Heteronuclear 1H-13C NMR spectroscopy provides one-bond and multiple-bond correlations between pairs of 1H and 13C chemical shifts that are characteristic of different organic functional groups. Taken together this information provides a picture of the chemical composition of these oils. Pyrolysis crude oil product from pine wood was characterized for comparison. Generally, pyrolysis oil is comprised of a more diverse distribution of heteroatom classes with higher oxygen number relative to HTL oil as shown by both positive- and negative-ion ESI FT-ICR MS. A total of 300 N1, 594 O1 and 267 O2 compounds were observed as products of hydrotreatment. The relative abundance of N1O1, N1O2, N1O3, N2, N2O1, N2O2 and O3 compounds are reduced to different degrees after hydrotreatment and other higher heteroatom containing species (O4-O10, N1O4, N1O5 and N2O3) are completely removed by hydrotreatment.

Sudasinghe, Nilusha; Cort, John R.; Hallen, Richard T.; Olarte, Mariefel V.; Schmidt, Andrew J.; Schaub, Tanner

2014-12-14T23:59:59.000Z

384

Photocatalytic effects of wool fibers modified with solely TiO2 nanoparticles and N-doped TiO2 nanoparticles by using hydrothermal method  

Science Journals Connector (OSTI)

Abstract The surfaces of wool fibers are modified with N-doped TiO2 nanoparticles by treating the fibers with tetrabutyl titanate and ammonium chloride under low temperature hydrothermal conditions to obtain wool fibers with photocatalytic functions in the visible light spectrum. The effects of nitrogen and sulfur in amino acids in keratin on the photocatalytic activity of TiO2 particle coated wool fibers are investigated. Changes of various fiber properties such as tensile strength, photocatalytic activity, and self-cleaning performance of untreated, TiO2 coated and N-doped TiO2 coated wool fibers are studied. It is found that N-doped anatase TiO2 nanoparticles with an average grain size of 11.2nm are synthesized and simultaneously grafted onto the wool fibers. After treatments, the crystallization index of the wool fibers is slightly reduced. The capability to protect against ultraviolet radiation is much enhanced. The performances of photocatalytic degradation of methylene blue dye and self-cleaning of red wine under both UV and visible light irradiation are endowed. It is also found that wool fibers coated with TiO2 particles without being doped by nitrogen still have apparent photocatalytic reactions and self-cleaning effects under visible light irradiation due to the formation of C-Ti3+, O-Ti3+, and N-Ti3+ bonds between TiO2 and wool keratin on the wool fiber surfaces. Thus wool fabrics might not need to be coated with N-doped TiO2 nanoparticles to realize its self-cleaning effect under visible light. Such important conclusions would provide wool materials with wide applications in clothing and technical products such as wastewater treatment.

Hui Zhang; Zhenwei Yang; Xingtao Zhang; Ningtao Mao

2014-01-01T23:59:59.000Z

385

Rural Development Energy Audit & Renewable Energy Development...  

Office of Environmental Management (EM)

Rural Development Energy Audit & Renewable Energy Development Assistance Webinar Rural Development Energy Audit & Renewable Energy Development Assistance Webinar January 21, 2015...

386

Geothermal Energy Association Recognizes the National Geothermal Data System  

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

The Geothermal Energy Association (GEA) announced today the winners of their 2014 GEA Honors, which recognizes companies, projects, and individuals who have demonstrated outstanding achievement in...

387

Monitoring and Modeling Fluid Flow in a Developing EGS Reservoir  

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

Project objectives: Better understand and model fluid injection into a tight reservoir on the edges of a hydrothermal field. Use seismic data to constrain geomechanical/hydrologic/thermal model of reservoir.

388

Instrument Development  

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

Cloud and Aerosol Characterization for Cloud and Aerosol Characterization for the ARM Central Facility: Multiple Remote Sensor Techniques Development K. Sassen Department of Meteorology University of Utah Salt lake City, UT 84112 overcome the poor data-handling capabilities that handi- capped multiple-channellidar studies in the past. The true diversity of transmitted and received polarization states of our system is illustrated at the bottom of Table 1. Note that the first full POL field tests will be made at the upcoming 1991 Project First ISCCP Regional Experiment (FIRE) Intensive Field Observations II campaign, where our unit will be one of severallidars and radars located at a central site serving as the hub for research aircraft operations. The increasingly complex data collected by the POL and other remote sensors using different wave-

389

FARADAYIC Development  

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

FARADAYIC FARADAYIC Development of Electrically Mediated Electrophoretic Deposition for Thermal Barrier Coatings F A R A D A Y T E C H N O L O G Y , IN C . Joseph Kell 1 , Heather McCrabb 1 , Binod Kumar 2 1 Faraday Technology, Inc., Clayton, Ohio, USA 2 University of Dayton Research Institute, Dayton, Ohio, USA Contact: josephkell@faradaytechnology.com; heathermccrabb@faradaytechnology.com Background There is a need for an affordable, non-line-of-sight method of coating complex-shaped turbine engine components with thermal barrier coatings (TBCs) that have controllable thickness distributions and a microstructure that is sufficiently strain-tolerant and will survive in the turbine environment. Typically plasma spray (PS) or electron beam physical vapor deposition (EB-PVD) are used to deposit TBCs Electrophoretic deposition (EPD) is a non-line-of-sight process that is easy to control

390

Nozzle development  

SciTech Connect

The objective of this program has been the development of experimental techniques and data processing procedures to allow for the characterization of multi-phase fuel nozzles using laboratory tests. Test results were to be used to produce a single value coefficient-of-performance that would predict the performance of the fuel nozzles independent of system application. Several different types of fuel nozzles capable of handling multi-phase fuels have been characterized for: (a) fuel flow rate versus delivery pressure, (b) fuel-air ratio throughout the fuel spray or plume and the effective cone angle of the injector, and (c) fuel drop- or particle-size distribution as a function of fluid properties. Fuel nozzles which have been characterized on both single-phase liquids and multi-phase liquid-solid slurries include a variable-film-thickness nozzle, a commercial coal-water slurry (CWS) nozzle, and four diesel injectors of different geometries (tested on single-phase fluids only). Multi-phase mixtures includes CWS with various coal loadings, surfactant concentrations, and stabilizer concentrations, as well as glass-bead water slurries with stabilizing additives. Single-phase fluids included glycerol-water mixtures to vary the viscosity over a range of 1 to 1500 cP, and alcohol-water mixtures to vary the surface tension from about 22 to 73 dyne/cm. In addition, tests were performed to characterize straight-tube gas-solid nozzles using two differences size distributions of glass beads in air. Standardized procedures have been developed for processing measurements of spray drop-size characteristics and the overall cross-section average drop or particle size. 43 refs., 60 figs., 7 tabs.

Dodge, F.T.; Dodge, L.G.; Johnson, J.E.

1989-06-01T23:59:59.000Z

391

Geothermal Technologies Program Annual Peer Review Presentation...  

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

Geothermal * In existing hydrothermal fields * Margins of existing hydrothermal fields * "Green Field" development 3 Energy Efficiency & Renewable Energy eere.energy.gov Industry...

392

Hydrothermal alkali metal recovery process  

DOE Patents (OSTI)

In a coal gasification operation or similar conversion process carried out in the presence of an alkali metal-containing catalyst wherein solid particles containing alkali metal residues are produced, alkali metal constituents are recovered from the particles by treating them with a calcium or magnesium-containing compound in the presence of water at a temperature between about 250.degree. F. and about 700.degree. F. and in the presence of an added base to establish a pH during the treatment step that is higher than would otherwise be possible without the addition of the base. During the treating process the relatively high pH facilitates the conversion of water-insoluble alkali metal compounds in the alkali metal residues into water-soluble alkali metal constituents. The resultant aqueous solution containing water-soluble alkali metal constituents is then separated from the residue solids, which consist of the treated particles and any insoluble materials formed during the treatment step, and recycled to the gasification process where the alkali metal constituents serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst. Preferably, the base that is added during the treatment step is an alkali metal hydroxide obtained by water washing the residue solids produced during the treatment step.

Wolfs, Denise Y. (Houston, TX); Clavenna, Le Roy R. (Baytown, TX); Eakman, James M. (Houston, TX); Kalina, Theodore (Morris Plains, NJ)

1980-01-01T23:59:59.000Z

393

Hydrothermal Processing of Wet Wastes  

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

Mill Waste, Plastic Bottles Aquatic Water Hyacinths, Kelp (Marine), Red Algae (Marine), Green Algae (Brackish), Green Algae (Marine), Green Algae (Fresh), Diatoms, Cyanobacteria...

394

Biocatalytic transformations of hydrothermal fluids  

Science Journals Connector (OSTI)

...of bacterial mats covering basalt lava surfaces (Jannasch & Wirsen 1981; Jannasch 1985...galactomannan hydrolysis > 90 Thermotoga xylanase xylan hydrolysis 105 Thermotoga glucose isomerase...suspension and in mats covering all solid surfaces within vent regions (Jannasch & Wirsen...

1997-01-01T23:59:59.000Z

395

Hydrothermal Synthesis of Quartz Nanocrystals  

E-Print Network (OSTI)

- electric behavior, which could be applied in small-scale actuators and motors. These and other potential to simple purification processes which allow for nanocrystal samples of varying average sizes

396

Removal of pertechnetate from simulated nuclear waste streams using supported zerovalent iron  

E-Print Network (OSTI)

Processing (STEP) initiative at PNNL. APPENDIX A Researchers at PNNL have developed a continuous, hydrothermal

Darab, John

2008-01-01T23:59:59.000Z

397

Hydrothermal synthesis of [C{sub 6}H{sub 16}N{sub 2}][In{sub 2}Se{sub 3}(Se{sub 2})]: A new one-dimensional indium selenide  

SciTech Connect

A new organically templated indium selenide, [C{sub 6}H{sub 16}N{sub 2}][In{sub 2}Se{sub 3}(Se{sub 2})], has been prepared hydrothermally from the reaction of indium, selenium and trans-1,4-diaminocyclohexane in water at 170 deg. C. This material was characterised by single-crystal and powder X-ray diffraction, thermogravimetric analysis, UV-vis diffuse reflectance spectroscopy, FT-IR and elemental analysis. The compound crystallises in the monoclinic space group C2/c (a=12.0221(16) A, b=11.2498(15) A, c=12.8470(17) A, {beta}=110.514(6){sup o}). The crystal structure of [C{sub 6}H{sub 16}N{sub 2}][In{sub 2}Se{sub 3}(Se{sub 2})] contains anionic chains of stoichiometry [In{sub 2}Se{sub 3}(Se{sub 2})]{sup 2-}, which are aligned parallel to the [1 0 1] direction, and separated by diprotonated trans-1,4-diaminocyclohexane cations. The [In{sub 2}Se{sub 3}(Se{sub 2})]{sup 2-} chains, which consist of alternating four-membered [In{sub 2}Se{sub 2}] and five-membered [In{sub 2}Se{sub 3}] rings, contain perselenide (Se{sub 2}){sup 2-} units. UV-vis diffuse reflectance spectroscopy indicates that [C{sub 6}H{sub 16}N{sub 2}][In{sub 2}Se{sub 3}(Se{sub 2})] has a band gap of 2.23(1) eV. - Graphical abstract: [C{sub 6}H{sub 16}N{sub 2}][In{sub 2}Se{sub 3}(Se{sub 2})], prepared under hydrothermal conditions, contains one-dimensional chains of stoichiometry [In{sub 2}Se{sub 3}(Se{sub 2})]{sup 2-}, in which four-membered [In{sub 2}Se{sub 2}] and five-membered [In{sub 2}Se{sub 3}] rings alternate. Highlights: > New one-dimensional indium selenide prepared under hydrothermal conditions. > The [In{sub 2}Se{sub 3}(Se{sub 2})]{sup 2-} chains are a new structural motif for Group 13 chalcogenides. > Unusual presence of (Se{sub 2}){sup 2-} moieties. > Optical band gap of 2.23(1) eV.

Ewing, Sarah J.; Powell, Anthony V. [Heriot-Watt University, Department of Chemistry, Edinburgh EH14 4AS (United Kingdom); Vaqueiro, Paz, E-mail: chepv@hw.ac.uk [Heriot-Watt University, Department of Chemistry, Edinburgh EH14 4AS (United Kingdom)

2011-07-15T23:59:59.000Z

398

Universit de Bretagne Sud IUT GEA 8, rue Montaigne BP 561 56017 VANNES Tel : 02 97 46 31 41-leconte@iu-vannes.fr  

E-Print Network (OSTI)

, which underlines its humanity and the learning dynamics of its actors. As organizational efficiency depends on individual, collective and organizational learning, it adresses new challenges to research for the sensemaking of cognitive data. KEY WORDS Organizational learning, - cognitive maps ­ sensemaking ­ structuring

Spagnolo, Filippo

399

Planned Geothermal Capacity | Open Energy Information  

Open Energy Info (EERE)

Planned Geothermal Capacity Planned Geothermal Capacity Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Planned Geothermal Capacity This article is a stub. You can help OpenEI by expanding it. General List of Development Projects Map of Development Projects Planned Geothermal Capacity in the U.S. is reported by the Geothermal Energy Association via their Annual U.S. Geothermal Power Production and Development Report (April 2011). Related Pages: GEA Development Phases Geothermal Development Projects Add.png Add a new Geothermal Project Please be sure the project does not already exist in the list below before adding - perhaps under a different name. Technique Developer Phase Project Type Capacity Estimate (MW) Location Geothermal Area Geothermal Region GEA Report

400

Psychology of Sustainable Development  

E-Print Network (OSTI)

to achieve sustainable development: economic, environmental,Psychology of Sustainable Development By Peter Schmuck andPsychology of Sustainable Development. Norwell, MA: Kluwer

Milfont, Taciano Lemos

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" 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

Ecosystems and Sustainable Development  

E-Print Network (OSTI)

Ecosystems and Sustainable Development Editors: J.L. Uso,Ecosystems and Sustainable Development. Southhampton, UK:ISBN: 1-85312-502-4. Sustainable development research is a

Tufford, Dan

1999-01-01T23:59:59.000Z

402

upper (hydroelectric) development  

Science Journals Connector (OSTI)

upper (hydroelectric) development, upper (hydroelectric) station, upstream (hydroelectric) development, upstream (hydroelectric) station ? Oberstufe f, oberes Wasserkraftwerk n, Oberliegerkraftwerk

2014-08-01T23:59:59.000Z

403

Category:Geothermal Projects | Open Energy Information  

Open Energy Info (EERE)

Projects Projects Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Category:Geothermal Projects Each year different agencies report the upcoming geothermal developing projects. The Geothermal Energy Association (GEA) publishes their findings in their annual US Geothermal Power Production and Development Update, in which it lists geothermal projects in one of four phases of development. SNL Financial reports geothermal projects and they collect their information from a variety of sources including EIA, company websites, press releases, and various other sources. The list below is intended to be a centralized list of geothermal projects from a variety of reporting sources. This list of projects may be sourced from GEA, SNL, EIA, press releases, or individual developers.

404

Puna Geothermal Project | Open Energy Information  

Open Energy Info (EERE)

Puna Geothermal Project Puna Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Puna Geothermal Project Project Location Information Location Puna, Hawaii County Hawaii County, Hawaii Geothermal Area Hawaii Geothermal Region Geothermal Project Profile Developer Puna Geothermal Venture Project Type Hybrid Flash/Binary GEA Development Phase Operational"Operational" is not in the list of possible values (Phase I - Resource Procurement and Identification, Phase II - Resource Exploration and Confirmation, Phase III - Permitting and Initial Development, Phase IV - Resource Production and Power Plant Construction) for this property. Planned Capacity (MW) 38 MW38,000 kW 38,000,000 W 38,000,000,000 mW 0.038 GW 3.8e-5 TW GEA Report Date

405

Environmental overview for the development of geothermal resources in the State of New Mexico. Final report  

SciTech Connect

A brief overview of the present day geothermal applications for hydrothermal electrical generation and direct heat use and their environmental implications is provided. Technologies and environmental impacts are considered at all points on the pathway of development resource exploration; well field, plant and transmission line construction; and plant operation. The technologies for electrical generation-direct, dry steam conversion; separated steam conversion; single-flash conversion, separated-steam/single-flash conversion and binary cycle conversion and the technologies for direct heat use - direct use of geothermal waters, surface heat exhanger, down-the hole heat exchanger and heat pump are described. A summary of the geothermal technologies planned or in operation within New Mexico geothermal areas is provided. A review of regulations that affect geothermal development and its related environmental impact in New Mexico is presented. The regulatory pathway, both state and federal, of geothermal exploration after the securing of appropriate leases, development, and construction and implementation of a geothermal facility are described. Six categories (Geophysical, Water, Air, Noise, Biota and Socioeconomics) were selected for environmental assessment. The data available is described.

Bryant, M.; Starkey, A.H.; Dick-Peddie, W.A.

1980-06-01T23:59:59.000Z

406

Individual Development and Excutive Development Plan Resources...  

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

link. CDR Menu image linked to Leadership Development Resource Center (LDRC) Career Interest Career Planning Federal Resume IDPEDP Interviewing Skills Is Management for Me...

407

COMING SOON DEVELOPMENT  

E-Print Network (OSTI)

COMING SOON DEVELOPMENT ENGINEERING THE JOURNAL OF ENGINEERING IN ECONOMIC DEVELOPMENT. · Rigorous analysis of existing development "solutions" through an engineering or economic lens. FOR MORE, interdisciplinary journal applying engineering and economic research to the problems of poverty. Published studies

Jacobs, Lucia

408

Training and Organizational Development  

E-Print Network (OSTI)

Training and Organizational Development Contact: Ellen Audley Assistant, (970) 491-1376, Ellen 1 of 5 This office coordinates training and development opportunities for personal and professional and state classified personnel. Customized training and orga- nizational development consulting services

409

Training and Organizational Development  

E-Print Network (OSTI)

Training and Organizational Development Contact: Ellen Audley Assistant, 491-1376, Ellen coordinates training and development opportunities for personal and professional growth for Colorado State. Customized training and organizational development consulting services are also available. Class Locations

Stephens, Graeme L.

410

Training and Organizational Development  

E-Print Network (OSTI)

Training and Organizational Development Contact: Ellen Audley Assistant, 491-1376, Ellen coordinates training and development opportunities for personal and professional growth for Colorado State. Customized training and organizational development consulting services are also available. Class Location

Stephens, Graeme L.

411

Training and Organizational Development  

E-Print Network (OSTI)

Training and Organizational Development Contact: Ellen Audley Assistant, (970) 491-1376, Ellen training and development opportunities for personal and professional growth for Colorado State University training and organiza- tional development consulting services are also available. Class Location: Johnson

412

Training and Organizational Development  

E-Print Network (OSTI)

Training and Organizational Development Contact: Ellen Audley Assistant, 491-1376, Ellen training and development opportunities for personal and professional growth for Colorado State University training and organizational development consulting services are also available. Class Location: Johnson

Stephens, Graeme L.

413

Developer | Open Energy Information  

Open Energy Info (EERE)

Below are access to resources, guides, and tutorials for OpenEI Developers. Contents 1 Content Developer 2 Linked Data 2.1 Background 2.2 Outside Resources 3 Links to developer...

414

Hydrothermal synthesis, structure and magnetic properties of a new three-dimensional iron arsenate [C{sub 6}N{sub 4}H{sub 21}][Fe{sup III}{sub 3}(HAsO{sub 4}){sub 6}  

SciTech Connect

A hydrothermal reaction of a mixture of iron oxalate, arsenic pentoxide, hydrofluoric acid and triethylenetetramine (TETA) at 150deg. C for 48h gives rise to a new iron arsenate [C{sub 6}N{sub 4}H{sub 21}][Fe{sub 3}(HAsO{sub 4}){sub 6}], I. The structure consists of a network of FeO{sub 6} and AsO{sub 4} building units connected through their vertices giving rise to a new secondary building unit, SBU-5. The SBU-5 units are through their corners forming a three-dimensional structure possessing one-dimensional channels bound by 8-T atoms (T=Fe, As). The formation of SBU-5 units is noteworthy. Variable temperature magnetic studies indicate antiferromagnetic interactions between the Fe centers with T{sub N} of 21.9K. Crystal data: M=1156.36, monoclinic, space group=C2/c (no. 15), a=18.422(3)A, b=8.8527(13)A, c=16.169(2)A, {beta}=111.592(2){sup o}, V=2451.9(6)A{sup 3}, Z=8, {rho}{sub calc}=3.037gcm{sup -3}, {mu}(Mo K{alpha})=9.903mm{sup -1}, R{sub 1}=0.0358, wR{sub 2}=0.0763, S=1.140 for 234 parameters.

Rao, Vandavasi Koteswara [Framework Solids Laboratory, Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012 (India); Natarajan, Srinivasan [Framework Solids Laboratory, Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012 (India)]. E-mail: snatarajan@sscu.iisc.ernet.in

2006-05-25T23:59:59.000Z

415

Hydrothermal synthesis and crystal structure of a new inorganic/organic hybrid of scandium sulfate: (H{sub 2}en)Sc{sub 2}(SO{sub 4}){sub 4}.(H{sub 2}O){sub 0.72}  

SciTech Connect

The first organically templated layered structure of scandium sulfate, (H{sub 2}en)Sc{sub 2}(SO{sub 4}){sub 4}.(H{sub 2}O){sub 0.72}, (en=ethylenediamine) was synthesized by a hydrothermal method and characterized by single crystal X-ray diffraction. In the title compound, scandium ions are bridged by sulfate groups with a ratio of 1:2 into a 4{sub 3}{sup 6} layer structure. These layers are parallel packed and separated from each other by ethylenediammonium dications and water molecules. The title compound crystallizes in the monoclinic space group P2/c, with cell parameters a=8.5966(13)A, b=5.1068(8)A, c=18.847(3)A, {beta}=91.210(3){sup o}, V=827.2(2)A{sup 3} and Z=2. Refinement gave R{sub 1}[I>2{sigma}(I)]=0.0354 and wR{sub 2}[I>2{sigma}(I)]=0.0878. Thermogravimetric analysis indicates that this material is thermally stable to above 400 deg. C.

Lu Jianjiang [Materials Science Division, Argonne National Laboratory, 9700 S Cass Avenue, Argonne, IL 60439 (United States)]. E-mail: j.lu@anl.gov; Schlueter, John A. [Materials Science Division, Argonne National Laboratory, 9700 S Cass Avenue, Argonne, IL 60439 (United States); Geiser, Urs [Materials Science Division, Argonne National Laboratory, 9700 S Cass Avenue, Argonne, IL 60439 (United States)

2006-05-15T23:59:59.000Z

416

NITINOL ENGINE DEVELOPMENT  

E-Print Network (OSTI)

20, 1976 LBL-5293 NITINOL ENGINE DEVELOPMENT Ridgway Banksof California. NITINOL ENGINE DEVELOPMENT Ridgway Banks andof practical heat engines based on this phenomenon is

Banks, Ridgway

2013-01-01T23:59:59.000Z

417

Developing Alaskan Sustainable Housing  

Office of Energy Efficiency and Renewable Energy (EERE)

The Association of Alaska Housing Authorities is holding a 3-day training event for housing developmentprofessionals titled Developing Alaskan Sustainable Housing (DASH). This is a unique...

418

Coal Development (Nebraska)  

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

This section provides for the development of newly-discovered coal veins in the state, and county aid for such development.

419

ORISE: Health Literacy Development  

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

Literacy Development While health disparities may be attributed to a number of factors, health literacy development and access to health information can help special populations...

420

SSL Market Development Workshop  

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

SSL Market Development Workshop Nov 12-13The 2014 DOE SSL Market Development Workshop gathers perspectives from government, industry, cities, utilities, designers, specifiers, retailers,...

Note: This page contains sample records for the topic "hydrothermal gea development" 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

ORISE: Web Development  

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

Web Development As computer-based applications become increasingly popular for the delivery of health care training and information, the need for Web development in support of...

422

SES CANDIDATE DEVELOPMENT PROGRAM  

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

CANDIDATE DEVELOPMENT PROGRAM (SESCDP) CANDIDATE DEVELOPMENT PROGRAM (SESCDP) DOE F 360.1 (11-03) Executive Development Plan (EDP) Name: Title: Organization: Office: RATIONALE FOR PLAN: APPROVALS: Candidate Signature: Date: Supervisor: Date: Mentor: Date: SES Candidate Development Program Manager: Date: DOE Executive Resources Board: Date: 1 U.S. DEPARTMENT OF ENERGY DOE F 360.1 (11-03) SENIOR EXECUTIVE SERVICE CANDIDATE DEVELOPMENT PROGRAM (SESCDP) Executive Development Plan (EDP) NAME OF SES CANDIDATE: DATE: EXECUTIVE CORE QUALIFICATION 1: LEADING CHANGE This core qualification encompasses the ability to develop and implement an organizational vision which integrates key national and program

423

Structuring product development processes  

Science Journals Connector (OSTI)

This paper proposes operational frameworks for structuring product development processes. The primary objective of this research is to develop procedures to minimize iterations during the development process which adversely affect development time and costs. Several procedures are introduced to restructure the development process. The computation of the corresponding product development times is facilitated by two Markov models addressing different types of learning. The methodologies are employed to identify a set of managerial concerns in restructuring the product development processes. The developed framework has become an integral part of a re-engineering project for the development of rocket engines at Rocketdyne Division of Rockwell International. Throughout the paper, the methodologies are illustrated with the help of this process.

Reza Ahmadi; Thomas A. Roemer; Robert H. Wang

2001-01-01T23:59:59.000Z

424

ORISE: Web Development  

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

Web Development Web Development As computer-based applications become increasingly popular for the delivery of health care training and information, the need for Web development in support of these tools continues to grow. The Oak Ridge Institute for Science and Education (ORISE) provides Web development capabilities to government agencies and organizations interested in converting training and education programs based on traditional means of communication into a variety of tools that suit the technology skills of today's health care providers and patients. ORISE develops Web-based training and informational products that expand the reach of targeted health messages to key audiences. Our specific capabilities include: Web applications development User experience testing

425

EIS | OpenEI Community  

Open Energy Info (EERE)

495 495 Varnish cache server Home Groups Community Central Green Button Applications Developer Utility Rate FRED: FRee Energy Database More Public Groups Private Groups Features Groups Blog posts Content Stream Documents Discussions Polls Q & A Events Notices My stuff Energy blogs 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142287495 Varnish cache server EIS Home Kyoung's picture Submitted by Kyoung(155) Contributor 14 October, 2013 - 20:19 Geothermal NEPA Workshop at GRC Categorical Exclusions CX Database EA EIS FONSI GEA GRC GRR NEPA On Tuesday, October 2, the Geothermal Technology Office and the National Renewable Energy Laboratory held a 1/2-day NEPA workshop. The workshop was held at the MGM Grand in Las Vegas, in conjunction with the GEA/GRC

426

Geothermal NEPA Workshop at GRC | OpenEI Community  

Open Energy Info (EERE)

Geothermal NEPA Workshop at GRC Geothermal NEPA Workshop at GRC Home > Groups > Geothermal Regulatory Roadmap Kyoung's picture Submitted by Kyoung(155) Contributor 14 October, 2013 - 20:19 Categorical Exclusions CX Database EA EIS FONSI GEA GRC GRR NEPA On Tuesday, October 2, the Geothermal Technology Office and the National Renewable Energy Laboratory held a 1/2-day NEPA workshop. The workshop was held at the MGM Grand in Las Vegas, in conjunction with the GEA/GRC Tradeshow and Conference. Three presentations were given, describing the NEPA database and associated analysis that had been conducted in 2013. 1. NEPA Database: The NEPA Database was developed on OpenEI as a way to assemble NEPA-related documents and meta-data in one location. As of this posting, there are 175 document sets in the collection, including

427

China Business Development  

E-Print Network (OSTI)

China Business Development Postgraduate Programme #12;Programme: China Business Development with China: Intercultural Management 3 1 Daily life and business behaviour explained from a cultural perspective Chinese strategic thinking China's political constellation and its impact on business life Human

Einmahl, Uwe

428

Global New Product Development  

Science Journals Connector (OSTI)

In the age of ubiquitous internet bandwidth, the development of a global market, coupled with rapid development of what once were underdeveloped countries and regions has led to many companies thinking and act...

Russell Watt

2014-01-01T23:59:59.000Z

429

Developing a Marketing Plan  

E-Print Network (OSTI)

Developing a good marketing plan will help you identify and quantify costs, set price goals, determine potential price outlook, examine production and price risk, and develop a strategy for marketing your crop. This publication describes...

Bevers, Stan; Waller, Mark L.; Amosson, Stephen H.; McCorkle, Dean

2009-03-02T23:59:59.000Z

430

Development of Operation System  

Science Journals Connector (OSTI)

We are gradually developing a total hospital information system known as GUNMAS (Gunma University Network for Medical-Hospital- Information Archiving System). an operation system is also being developed as part o...

Seiji Kato M.D.; Yasuharu Kitani M.D.

1992-01-01T23:59:59.000Z

431

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

SciTech Connect

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts. In addition to analysis of domestic policies and programs, this project will include the development of a U.S.-Brazil Biodiesel Pilot Project. The purpose of this effort is to promote and facilitate the commercialization of biodiesel and bioenergy production and demand in Brazil.

Kathryn Baskin

2005-04-30T23:59:59.000Z

432

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

SciTech Connect

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts. In addition to analysis of domestic policies and programs, this project will include the development of a U.S.-Brazil Biodiesel Pilot Project. The purpose of this effort is to promote and facilitate the commercialization of biodiesel and bioenergy production and demand in Brazil.

Kathryn Baskin

2005-01-31T23:59:59.000Z

433

Gammasphere software development  

SciTech Connect

Activities of the nuclear physics group are described. Progress was made in organizing the Gammasphere Software Working Group, establishing a nuclear computing facility, participating in software development at Lawrence Berkeley, developing a common data file format, and adapting the ORNL UPAK software to run at Gammasphere. A universal histogram object was developed that defines a file format and provides for an objective-oriented programming model. An automated liquid nitrogen fill system was developed for Gammasphere (110 Ge detectors comprise the sphere).

Piercey, R.B.

1993-01-01T23:59:59.000Z

434

Hydrothermal synthesis and the crystal structure of borate cancrinite (Na,Ca){sub 2}[Na{sub 6}(AlSiO{sub 4}){sub 6}](BO{sub 3}) . 2H{sub 2}O  

SciTech Connect

Transparent prismatic single crystals of borate cancrinite (Na,Ca){sub 2}[Na{sub 6}(AlSiO{sub 4}){sub 6}](BO{sub 3}) . 2H{sub 2}O are prepared through hydrothermal crystallization. The parameters of the hexagonal unit cell and intensities of 10806 reflections are measured on an Enraf-Nonius CAD4 automated diffractometer. The compound crystallizes in the hexagonal crystal system with the unit cell parameters a = 12.745(4) A, c = 5.180(2) A, V = 728.6(4) A{sup 3}, and space group P6{sub 3}. The structure is determined by direct methods and refined using the full-matrix least-squares procedure in the anisotropic approximation for the non-hydrogen atoms. The refinement of the structure is performed to the final discrepancy factor R{sub 1} = 0.027 for 2889 unique reflections with I > 2 {sigma} (I). In the structure of the borate cancrinite, the AlO{sub 4} and SiO{sub 4} tetrahedra form a zeolite-like framework in which twelve-membered hexagonal channels are occupied by sodium atoms and BO{sub 3} groups, whereas six-membered channels are filled with sodium and calcium atoms and water molecules. The mean interatomic distances are found to be as follows: (Si-O){sub mean} = 1.614 A and (Al-O){sub mean} = 1.741 A in the AlO{sub 4} and SiO{sub 4} tetrahedra, (Na-O){sub mean} = 2.542 A in the seven-vertex sodium polyhedra, and [(Na,Ca)-O]{sub mean} = 2.589 A in the ditrigonal bipyramids.

Shirinova, A. F. [Baku State University (Azerbaijan)], E-mail: afashf@rambler.ru; Khrustalev, V. N. [Russian Academy of Sciences, Nesmeyanov Institute of Organoelement Compounds (Russian Federation); Samedov, H. R. [National Academy of Sciences of Azerbaijan, Institute of Chemical Problems (Azerbaijan); Chiragov, M. I. [Baku State University (Azerbaijan)

2006-01-15T23:59:59.000Z

435

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

SciTech Connect

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts.

Kathryn Baskin

2004-04-30T23:59:59.000Z

436

United Nations Development Programme  

E-Print Network (OSTI)

United Nations Development Programme Bureau for Development Policy Energy and Atmosphere Programme Development Programme with support from the Government of Norway #12;The views expressed in this volume. #12;5 Acknowledgements 6 Notes on Authors 7 Foreword 9 Executive Summary 27 Introduction: Energy

437

Individual Development Plan (IDP)  

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

Individual Development Plan (IDP) Individual Development Plan (IDP) SAMPLE 10/01/2012 to 09/30/2013 Training Reason Developmental Activity Description Training Cost Travel Cost Total Cost Hours Start Date/ Completion Date Short Range Goal 1: Enhance Leadership Skills Development Mentoring Receive mentoring from a higher grade employee (s) and provide mentoring to lower grade employee(s). 0 0 0 TBD 1/1/2013 Development Instructor led EM Leadership Excellence Program - Interpersonal Communication Skills 0 0 0 8 6/15/2013 Development Instructor led Federal Executive Institute (OPM): Leadership for a Democratic Society $18,300 0 0 30 day residential TBD Development Shadowing Shadow one or more SES employees for one or two day period to learn leadership techniques. 0 0 0 TBD TBD

438

Geothermal energy development  

SciTech Connect

This book studies the impact of geothermal energy development in Imperial County, California. An integrated assessment model for public policy is presented. Geothermal energy resources in Imperial County are identified. Population and employment studies project the impact of geothermal on demography and population movement in the county. A public opinion, and a leadership opinion survey indicate support for well-regulated geothermal development. Actual development events are updated. Finally, research conclusions and policy recommendations are presented.

Butler, E.W.; Pick, J.B.

1983-01-01T23:59:59.000Z

439

the Regional Development Corporation  

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

carry out this work, CPO partners carry out this work, CPO partners with the Los Alamos National Laboratory Foundation for education, the Regional Development Corporation for economic development, and the regional United Way organizations for community giving. Education Los Alamos National Security (LANS) invests more than $1 million each year to enhance regional educational opportunities in science, technology, engineering, and math (STEM) education. Education Focus Areas Our education commitments address four focus areas: * Workforce Development * Student Internships * Teacher and Faculty Professional Development * Public Understanding of Science In 2011, more than 1,100 students

440

Economic Development Office  

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

Contacts Gary Spanner Economic Development Office Manager 509372-4296 ROB1210 Robin Conger Program Manager 509372-4328 ROB1221 Bernard Hansen Entrepreneurial Programs Manager...

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
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441

USER MANUAL Developers  

E-Print Network (OSTI)

Foundation, US Department of Energy Primary developers: Darius Abramavicius: 2003 -- 2010 (initiator) Wei.......................................................................7 3 Basic usage and functionality.....................................................................................13 A. System Made of Known Energy Levels...........................................................14

Mukamel, Shaul

442

Bioenergy for Sustainable Development  

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

Sustainable Bioenergy High-Impact Opportunity Sustainable Energy For All BIOENERGY FOR SUSTAINABLE DEVELOPMENT Overview * Energy poverty is widespread and prevents economic...

443

SRNL LDRD - Developed Technologies  

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

Developed Technologies Porous Wall Hollow Glass Microspheres Porous Wall Hollow Glass Microspheres Tiny Glass Spheres for Energy Storage, Medical Applications and Other Uses...

444

Development Michael Short  

E-Print Network (OSTI)

power plant for buses PEM fuel cell, 120 kW, hydrogen Automotive fuel cell systems for primary power PEM and technology development PEM fuel cell, 5 kW, hydrogen Fuel cell system for the Space Shuttle Orbiter Alkaline fuel cell development Continued commercialization Reduce product cost Reduce size and weight Increase

445

Growth & Development / Parental Care  

E-Print Network (OSTI)

participate; if one parents is lost, fledging rates usually drop #12;Winkler reduced clutch size from 5 to 3Growth & Development / Parental Care #12;Embryonic Development Although the sequence of 42 stages the egg The hatching muscle helps the chick break out of the egg Parents typically dispose of the egg

Butler, Christopher J.

446

The Development Commission  

Science Journals Connector (OSTI)

... report of the Development Commissioners, covering the year ended March 31, 1936, reviews the expenditure from the Development Fund on agricultural and rural economy, fisheries, the construction and improvement ... the Agricultural Research Council, in addition to 43,000 to the latter Council for capital ...

1937-04-17T23:59:59.000Z

447

Sun Academic Developer Program  

E-Print Network (OSTI)

Sun Academic Developer Program Kim Jones Vice President Government, Education & Health Care Sun Microsystems, Inc. FY08 Campus Ambassador Programme Your Name Here Sun Microsystems, Inc. #12;2 FY08 Campus Ambassador Programme #12;3 Sun Academic Developer Initiative On-Campus Events and Contests Open Source

McCusker, Guy

448

Internet Polling Development Report  

E-Print Network (OSTI)

, and the development of a polling engine to launch the above procedures and pass the data on to the database server. This final report describes the automated polling procedures that have been developed for Synergistic, Highland and ABB loggers. This report also...

Klima, P.; Lockhart, D.; Haberl, J. S.

2001-01-01T23:59:59.000Z

449

NERSC Science Gateway Development  

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

Design Forward Design Forward Home » R & D » Science Gateway Development Science Gateway Development Science gateways are conduits for bringing HPC to the web. NERSC assists in the development and hosting of gateways that make NERSC compute and data resources more broadly useful. To ease the development of these gateways, the NERSC Web Toolkit (NEWT) makes science gateways accessible to anyone familiar with HTML and javascript. You can find more detailed information about science gateway development in the related NERSC user documentation and at the NEWT website. What are some use cases? A science gateway can be tailored to the needs within a team of researchers allowing them to share data, simulation results, and information among users who may be geographically distributed.

450

Funding Opportunity: Geothermal Technologies Program Seeks Technologie...  

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

Geothermal Technologies Program Seeks Technologies to Reduce Levelized Cost of Electricity for Hydrothermal Development and EGS Funding Opportunity: Geothermal Technologies...

451

CONTENTS Developing Alaskan Arctic  

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

Developing Alaskan Arctic Developing Alaskan Arctic Potential ...........................................1 Commentary ...................................2 NETL Develops Strategic Partnership with the Alaska Center for Energy and Power ...8 Deepwater and Ultra-Deepwater Produced Water Discharge ....10 Intelligent Production System for Ultra Deepwater with Short Hop Wireless Power and Wireless Data Transfer .........................................16 Snapshots ......................................19 CONTACTS Roy Long Technology Manager Ultra-Deepwater/Offshore 304-285-4479 roy.long@netl.doe.gov Ray Boswell Technology Manager Natural Gas Technology R&D 412-386-7614 ray.boswell@netl.doe.gov Eric Smistad Technology Manager Oil Technology R&D 281-494-2619 eric.smistad@netl.doe.gov

452

Innovation Ecosystem Development Initiative  

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

Innovation Ecosystem Development Initiative Innovation Ecosystem Development Initiative Funding Opportunity Number DE-FOA-0000356 Applicant (Legal Name) University of Utah Technology Commercialization Office Location: Salt Lake City, UT Project Title Energy Innovation Commercialization Center Proposed Action or Project Description The project proposes to create an Energy Innovation Commercialization Center at the University of Utah. The scope of work for this project is in two phases: tasks necessary to create the Center and actual commercialization and outreach to other institutions. Specific activities for Phase I for the Center startup include 1) negotiating contract, prepare correspondence, establishing website, meetings, scheduling activities, developing metrics, and designing and creating a database. Phase 2 activities for Center

453

Research and Development  

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

Research and Development Research and Development The Environmental Energy Technologies Division performs analysis, research, and development leading to better energy technologies and reduction of adverse energy-related environmental impacts. The Division carries out research on batteries and fuel cells, electricity grid technologies, energy-efficient building technologies; energy analysis; environmental impacts of energy use, including on air quality and climate, indoor environmental quality, and sensors and materials for energy applications. Batteries and Fuel Cells Advanced energy technologies for low-cost rechargeable advanced electrochemical batteries and fuel cells for automotive and stationary applications. Buildings Energy Efficiency Working with industry to develop technologies for buildings that increase energy efficiency, and improve the comfort, health and safety of building occupants.

454

Essays on development finance  

E-Print Network (OSTI)

This thesis consists of three essays that examine investment choices in less developed countries. Chapter 1 examines how the structure of existing microfinance contracts may discourage risky but high-expected return ...

Fischer, Gregory M. (Gregory Mark)

2008-01-01T23:59:59.000Z

455

Validated SCR Concept Development  

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

Validated SCR Concept Development 2007 DEER Conference, Detroit, MI Dr. Michael Traver, IAV Inc James Ireton, IAV Inc Dr. Lutz Krmer, IAV GmbH Jrgen Manns, IAV GmbH Poster...

456

Remote Sensing in Development  

Science Journals Connector (OSTI)

...social development in Tanzania. Mainland Tanzania is ad-ministratively divided into 20...encounters methods of manip-ulating solar reflectance values to bring out spectral...these planets were formed. In the outer solar system, evidence indicates that large...

Charles K. Paul; Adolfo C. Mascarenhas

1981-10-09T23:59:59.000Z

457

Development Opportunity Zone Credit  

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

The Development Opportunity Zone Credits incent new and expanding businesses in the Cities of Beloit, Janesville and Kenosha by providing non-refundable tax credits to assist with the creation and...

458

Training and Development  

E-Print Network (OSTI)

Training and Development Administration Assistant Vice Chancellor Lori Castro VC Business Senior Manager Conflict Resolution Nancy Heischman Training Coordinator Vacant Principal Technical Training Consultant Frank Widman Health Care Facilitator / Interim Benefits Manager Frank Trueba Disability

California at Santa Cruz, University of

459

Education and Workforce Development  

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

OPERATION BioenergizeME is BETOs educational base camp for students, educators, and others seeking better understanding of the promises and challenges in developing a thriving bioeconomy.

460

Scott Koenig Development Officer  

E-Print Network (OSTI)

Scott Koenig Development Officer Teri Lucie Thompson Senior Vice President & CMO UA FOUNDAT I/TV Station Mgr Frank Fregoso Chief Engineer Cheech Calenti IT Manager Ed Kesterson Radio Program Dir. AHSC

Utzinger, Urs

Note: This page contains sample records for the topic "hydrothermal gea development" 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.


461

Cybersecurity Framework Development Overview  

E-Print Network (OSTI)

Cybersecurity Framework Development Overview NIST's Role in Implementing Executive Order 13636 "Improving Critical Infrastructure Cybersecurity" #12;Executive Order 13636: Improving Critical Infrastructure Cybersecurity - February 12, 2013 "The cyber threat to critical infrastructure continues to grow

Bentz, Dale P.

462

Cybersecurity Framework Development Overview  

E-Print Network (OSTI)

Cybersecurity Framework Development Overview NIST's Role in Implementing Executive Order 13636 "Improving Critical Infrastructure Cybersecurity" #12;Executive Order 13636: Improving Critical Infrastructure Cybersecurity February 12, 2013 · "The cyber threat to critical infrastructure continues to grow

463

Technology Diffusion and Development  

Science Journals Connector (OSTI)

This chapter discusses the technology diffusion and development that play a key role in climate change mitigation. Most of the authors are engineers with long business experience in this field. In Sect. 9.1, t...

Teruo Okazaki; Mitsutsune Yamaguchi; Hiroyuki Watanabe

2012-01-01T23:59:59.000Z

464

UESC Development Update  

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

Presentation covers an update on the utility energy service contract (UESC) development and is given at the FUPWG 2006 Spring meeting, held on May 3-4, 2006 in Atlanta, Georgia.

465

Senior Director Student Development  

E-Print Network (OSTI)

Senior Director Student Development & Services Janet Teasdale Assistant to the Vice President, Conferences & Food Operations (dual campus) Andrew Parr Chaplains Roberta Fraser Inter-Fraternity & Panhellenic Community Service Learning Margot Fryer Alma Mater Society UBCV Graduate Student Society UBCV

Michelson, David G.

466

Community Development Fund (Illinois)  

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

The Community Development Fund is a partnership between the Illinois Department of Commerce and Economic Opportunity (DCEO) and financial institutions. Up to $5 million in micro loans is available...

467

Geological Development of Panama  

Science Journals Connector (OSTI)

The Panama that geologists see today is a young ... /early Tertiary time. The geological development of Panama is a consequence of the relative motions ... igneous rocks that comprise much of present-day Panama f...

Russell S.Harmon

2005-01-01T23:59:59.000Z

468

Essays on development economics  

E-Print Network (OSTI)

This dissertation is a collection of three independent papers in empirical development economics. The first chapter studies the effect of a family planning program in Bangladesh, which successfully reduced fertility, on ...

Ruthbah, Ummul Hasanath

2007-01-01T23:59:59.000Z

469

Advanced Interconnect Development  

SciTech Connect

The objectives of this project are to develop cost-effective, optimized materials for intermediate temperature SOFC interconnect and interconnect/electrode interface applications and identify and understand degradation processes in interconnects and at their interfaces with electrodes.

Yang, Z.G.; Maupin, G.; Simner, S.; Singh, P.; Stevenson, J.; Xia, G.

2005-01-27T23:59:59.000Z

470

NOx Sensor Development  

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

needed to meet emission targets and enable widespread use of diesel vehicles with better fuel economies: We are developing a novel sensor with the potential to meet OEM cost and...

471

Microbioreactors for bioprocess development  

E-Print Network (OSTI)

This thesis presents the design, fabrication, and characterization of a microbioreactor integrated with automated sensors and actuators as a step towards high-throughput bioprocess development. In particular, this thesis ...

Zhang, Zhiyu, Ph. D. Massachusetts Institute of Technology

2006-01-01T23:59:59.000Z

472

USABC Battery Separator Development  

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

Separator Development P.I. - Ron Smith Presenter - Kristoffer Stokes, Ph.D. Celgard, LLC Project ID ES007 May 10, 2011 This presentation does not contain any proprietary,...

473

Acquisition Career Development Program  

Directives, Delegations, and Requirements

This Order establishes training and certification requirements and career development programs under the Acquisition Career Development (ACD) Program for DOE and NNSA acquisition workforce. The acquisition workforce includes contracting, purchasing, personal property management, program management, Contracting Officers and Contracting Officer Representatives. The ACD Program implements the Office of Federal Procurement Policy (OFPP) requirements, Federal Acquisition Regulation (FAR) requirements, Federal Acquisition Reform Act (FARA) requirements, and the objectives of Executive Order (E.O.) 129231, Federal Procurement Reform, dated 10-13-1994. This order cancels DOE O 361.1, Acquisition Career Development Program, dated 11-10-99, AND Acquisition Letter 2003-05, Personal Property Management Career Development, Training, and Certification Program, dated 9-10-03. Cancels DOE O 361.1 Chg 2. Canceled by DOE O 361.1B.

2004-04-19T23:59:59.000Z

474

WINDExchange: Wind Economic Development  

Wind Powering America (EERE)

help you analyze the economics of a small wind electric system and decide whether wind energy will work for you. Wind Energy Finance Online Calculator Wind Energy Finance developed...

475

Offshore Wind Development 2011  

Science Journals Connector (OSTI)

Growth in the European offshore market will depend principally on the ability ... manufacturing capacity, and the development of specialized offshore wind turbines with their own manufacturing supply chain are...

Mark J. Kaiser; Brian F. Snyder

2012-01-01T23:59:59.000Z

476

Coal gasification development intensifies  

Science Journals Connector (OSTI)

Coal gasification development intensifies ... Three almost simultaneous developments in coal gasification, although widely divergent in purpose and geography, rapidly are accelerating the technology's movement into an era of commercial exploitation. ... A plant to be built in the California desert will be the first commercialsize coal gasification power plant in the U.S. In West Germany, synthesis gas from a coal gasification demonstration plant is now being used as a chemical feedstock, preliminary to scaleup of the process to commercial size. ...

1980-02-25T23:59:59.000Z

477

Recent developments: Industry briefs  

SciTech Connect

This article is the `Industry Briefs` portion of Nuexco`s July 1992 `Recent Developments` section. Specific items mentioned include: (1) the merger of Entergy and Gulf States Utilities, (2) restart of the Sequoyah Fuels facility in Oklahoma, (3) development of the 7th and 8th nuclear units in Taiwan, (4) purchase of interest in Rio Algom, Ltd, and (5) acquisition of the Italian firm AGIP by a Canadian company.

NONE

1992-07-01T23:59:59.000Z

478

Acquisition Career Development Program  

Directives, Delegations, and Requirements

To set forth requirements and responsibilities for the Department of Energy (DOE) Acquisition Career Development (ACD) Program, which implements Office of Federal Procurement Policy (OFPP) requirements, Federal Acquisition Regulation (FAR) requirements, Federal Acquisition Reform Act (FARA) requirements, and the career development objectives of Executive Order (E.O.) 12931. Change 1 approved 12-20-2001. Cancels DOE O 361.1. Canceled by DOE O 361.1 Chg 2.

2001-12-20T23:59:59.000Z

479

Acquisition Career Development Program  

Directives, Delegations, and Requirements

To set forth requirements and responsibilities for the Department of Energy (DOE) Acquisition Career Development (ACD) Program, which implements Office of Federal Procurement Policy (OFPP) requirements, Federal Acquisition Regulation (FAR) requirements, Federal Acquisition Reform Act (FARA) requirements, and the career development objectives of Executive Order (E.O.) 12931. Change 1 approved 12-20-2001. Change 2 approved 06-13-03. Cancels DOE O 361.1 Chg 1. Canceled by DOE O 361.1A.

2003-06-13T23:59:59.000Z

480

What is Community Development?  

E-Print Network (OSTI)

and community colleges: http://www.sbaonline.sba.gov/sbdc/ Physical, Natural and Cultural Resources ? TEX*A*SYST: http://waterhome.brc.tamus.edu ? Onsite Wastewater Treatment: http://ossf.tamu.edu ? Entrepreneurship Resources: http...: Community Development Programming Resources Focus Resources General ? Texas AgriLife Extension Service Educational Resource Center: http://agrilifebookstore.org ? Southern Rural Development Center: http://srdc.msstate.edu ? Appropriate Technology Transfer...

Taylor, Greg

2009-04-01T23:59:59.000Z

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481

SES CANDIDATE DEVELOPMENT PROGRAM  

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

3 3 (11-03) SENIOR EXECUTIVE SERVICE CANDIDATE DEVELOPMENT PROGRAM (SESCDP) Developmental Assignment Opportunity DATE: NAME OF SES CANDIDATE: TITLE: ASSIGNMENT NUMBER: ASSIGNMENT BEGINS: ENDS: TELEPHONE NUMBER: FAX NUMBER: EMAIL ADDRESS: ASSIGNMENT LOCATION HOST ORGANIZATION: PURPOSE OF ASSIGNMENT: ASSIGNMENT POSITION: ASSIGNMENT DUTIES: EXECUTIVE COR QUALIFICATIONS TO BE ADDRESSED: OFFICE ADDRESS: TELEPHONE NUMBER: FAX NUMBER: E-MAIL ADDRESS: 1 U.S. DEPARTMENT OF ENERGY SENIOR EXECUTIVE SERVICE CANDIDATE DEVELOPMENT PROGRAM (SESCDP)

482

Developer Resources | Department of Energy  

Office of Environmental Management (EM)

Developer Resources Developer Resources Apps for Energy Apps for Energy The Energy Department is challenging developers to use the Green Button data access program to bring...

483

Climate Change, Adaptation, and Development  

E-Print Network (OSTI)

developing countries "can significantly offset the adverse effects of climate change").Climate Change, 2 which calls on developed countries (but not developing countries)developing countries that will bear the bulk of the effects of climate change.

Cole, Daniel H.

2008-01-01T23:59:59.000Z

484

Hydrothermal Success Stories | Department of Energy  

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

Available to Small Businesses for New Products or Technologies that Expand Geothermal Markets The Energy Department announced funds targeted to small businesses in two separate...

485

The fate of lignin during hydrothermal pretreatment  

E-Print Network (OSTI)

RESEARCH Open Access The fate of lignin during hydrothermalbiomass benefits from lignin removal, relocation, and/ormay all influence these lignin changes. To better understand

Trajano, Heather L; Engle, Nancy L; Foston, Marcus; Ragauskas, Arthur J; Tschaplinski, Timothy J; Wyman, Charles E

2013-01-01T23:59:59.000Z

486

Hydrothermal Resources Fact Sheet | Department of Energy  

Office of Environmental Management (EM)

Exploration Technologies Technology Needs Assessment Federal Interagency Geothermal Activities 2011 The Dixie Valley Geothermal Plant in Nevada produces 60 MW of...

487

Organic geochemical biosignatures in alkaline Hydrothermal ecosystems  

E-Print Network (OSTI)

The 13C content of microbial products are controlled by many factors, including the 13C content of the growth substrate, growth rate, the flux of carbon through various parts of the biochemical network, and the isotopic ...

Bradley, Alexander Smith

2008-01-01T23:59:59.000Z

488

Hydrothermal Synthesis of Delafossite-Type Oxides  

Science Journals Connector (OSTI)

Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, and Laboratoire LCMIE/CIRIMAT CNRS UMR 5085, Universit Paul Sabatier Toulouse III, 118 Route de Narbonne, 31062 Toulouse Cedex, France ... The A-site cations, Cu+ and Ag+ (d10 ions), are more appropriate for enhanced optical transparency, while formal Pd+ and Pt+ (d9 ions)19,20 are better choices for improved electrical conductivity. ... Owing to the toxicity of Tl2O3 and the porosity of PTFE Teflon liners at elevated temperatures, the reactions between Cu2O or Ag2O and Tl2O3 at various hydroxide concentrations (0.5?2.5 M) was limited to one set of reactions, and the Teflon liner was subsequently disposed of, to avoid the hazard of permanent contamination of the reactor. ...

William C. Sheets; Emmanuelle Mugnier; Antoine Barnab; Tobin J. Marks; Kenneth R. Poeppelmeier

2005-11-25T23:59:59.000Z

489

Hydrothermal Photo Library | Department of Energy  

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

applications that accelerate the adoption of geothermal energy. To extend the available heat extraction per well, the Office partnered with FORO Energy to design a high-power...

490

Hydrothermal Exploration Best Practices and Geothermal Knowledge...  

Open Energy Info (EERE)

adjusted to fit geothermal parameters such as differences in geologic regime, structure, heat source, surface effects (weather, vegetation patterns, groundwater flow), and other...

491

THERMODYNAMIC AND HYDRODYNAMIC PROPERTIES OF HYDROTHERMAL SYSTEMS  

E-Print Network (OSTI)

1Jniversity Stanford,(California INTRODUCTION Geothermal energy has received much attention i n. There is considerable l i t e r a t u r e on the possible methods of geothermal energy extraction, and practical usage of geothermal energy is growing worldwide. The goal of any geothermal production system is t o extract heat from

Stanford University

492

Hydrothermal alteration mineral mapping using hyperspectral imagery...  

Open Energy Info (EERE)

the intense alteration in this area and the presenceof cross-cutting faults indicate a high probability of recenthot fluid escape. Authors T. Kennedy-Bowdoin, B. A. Martini, E....

493

The fate of lignin during hydrothermal pretreatment  

E-Print Network (OSTI)

increases ethanol yield from cellulose and switchgrassEthanol produced by fermentation of sugars contained in cellulose

Trajano, Heather L; Engle, Nancy L; Foston, Marcus; Ragauskas, Arthur J; Tschaplinski, Timothy J; Wyman, Charles E

2013-01-01T23:59:59.000Z

494

Mapping Hydrothermal Upwelling and Outflow Zones: Preliminary...  

Open Energy Info (EERE)

Temperature Data and Geologic Analysis at Lee Allen Springs and Salt Wells Basin Abstract Two-meter temperature surveys have been conducted at Salt Wells Basin and...

495

Economic Development | ornl.gov  

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

Economic Development Carbon Fiber Cluster Strategy Additive Manufacturing Cluster Strategy Entrepreneurial Development Programs Oak Ridge Science and Technology Park Economic...

496

Radon in Homes: Recent Developments  

Science Journals Connector (OSTI)

Radon in Homes: Recent Developments ... This report gives an update on current developments regarding the issue of radon in homes. ...

Charles H. Atwood

2006-10-01T23:59:59.000Z

497

ORISE: Health Literacy Development  

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

Literacy Development Literacy Development While health disparities may be attributed to a number of factors, health literacy development and access to health information can help special populations gain a better understanding of wellness and prevention. The Internet and other means of electronic communication have become popular tools that are allowing people to take control of their health. According to Healthy People 2010, nearly half of American adults (90 million people) are deemed "health illiterate"-an increasing problem among special populations that appears to contribute to health disparities. Health literacy refers to the ability to read and understand materials related to personal health, as well as navigate the health system. To assist government agencies and organizations educate populations facing

498

Power Systems Development Facility  

SciTech Connect

In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF), located in Wilsonville, Alabama, has routinely demonstrated gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high-pressure solids handling systems. This final report summarizes the results of the technology development work conducted at the PSDF through January 31, 2009. Twenty-one major gasification test campaigns were completed, for a total of more than 11,000 hours of gasification operation. This operational experience has led to significant advancements in gasification technologies.

Southern Company Services

2009-01-31T23:59:59.000Z

499

SES CANDIDATE DEVELOPMENT PROGRAM  

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

5 5 (11-03) SENIOR EXECUTIVE SERVICE CANDIDATE DEVELOPMENT PROGRAM (SESCDP) Candidate Developmental Assignment Evaluation DATE:_______________ NAME OF SES CANDIDATE TITLE OF POSITION LOCATION ASSIGNMENT DURATION: Which Executive Core Qualification(s) was this assignment intended to meet? Leading Change Leading People Results Driven Business Acumen Building Coalitions/Communication Please provide a brief description of your assignment. Did the experience meet your expectation? Was this a good learning experience? 1 U.S. DEPARTMENT OF ENERGY DOE F 360.5 (11-03) SENIOR EXECUTIVE SERVICE CANDIDATE DEVELOPMENT PROGRAM (SESCDP) Candidate Developmental Assignment Evaluation

500

Standards Development Support  

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

CALiPER test results and analyses are used to support the development of standards and test procedures for SSL especially those related to complex areas such as flicker, dimming, power quality, and long-term performance. In addition, DOE hosts annual CALiPER roundtables attended by representatives from industry, independent test laboratories, and key standards-setting groups to solicit input on test results and procedures and additional testing needs for SSL. The roundtable meetings provide an opportunity for these diverse groups to gather and discuss complex issues and standards development efforts related to SSL testing, and these targeted working sessions have paid off in the form of accelerated progress.