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Note: This page contains sample records for the topic "monoxide volatile organic" 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.


1

Volatile organic compound sensor system  

DOE Patents [OSTI]

Generally, this invention relates to the development of field monitoring methodology for new substances and sensing chemical warfare agents (CWAs) and terrorist substances. It also relates to a portable test kit which may be utilized to measure concentrations of halogenated volatile organic compounds (VOCs) in the field. Specifically it relates to systems for reliably field sensing the potential presence of such items while also distinguishing them from other elements potentially present. It also relates to overall systems and processes for sensing, reacting, and responding to an indicated presence of such substance, including modifications of existing halogenated sensors and arrayed sensing systems and methods.

Schabron, John F. (Laramie, WY); Rovani, Jr., Joseph F. (Laramie, WY); Bomstad, Theresa M. (Waxahachie, TX); Sorini-Wong, Susan S. (Laramie, WY); Wong, Gregory K. (Laramie, WY)

2011-03-01T23:59:59.000Z

2

Volatile organic compound sensing devices  

DOE Patents [OSTI]

Apparatus employing vapochromic materials in the form of inorganic double complex salts which change color reversibly when exposed to volatile organic compound (VOC) vapors is adapted for VOC vapor detection, VOC aqueous matrix detection, and selective VOC vapor detection. The basic VOC vapochromic sensor is incorporated in various devices such as a ground probe sensor, a wristband sensor, a periodic sampling monitor, a soil/water penetrometer, an evaporative purge sensor, and various vacuum-based sensors which are particularly adapted for reversible/reusable detection, remote detection, continuous monitoring, or rapid screening of environmental remediation and waste management sites. The vapochromic sensor is used in combination with various fiber optic arrangements to provide a calibrated qualitative and/or quantitative indication of the presence of VOCs. 15 figs.

Lancaster, G.D.; Moore, G.A.; Stone, M.L.; Reagen, W.K.

1995-08-29T23:59:59.000Z

3

Volatile organic compound sensing devices  

DOE Patents [OSTI]

Apparatus employing vapochromic materials in the form of inorganic double complex salts which change color reversibly when exposed to volatile organic compound (VOC) vapors is adapted for VOC vapor detection, VOC aqueous matrix detection, and selective VOC vapor detection. The basic VOC vapochromic sensor is incorporated in various devices such as a ground probe sensor, a wristband sensor, a periodic sampling monitor, a soil/water penetrometer, an evaporative purge sensor, and various vacuum-based sensors which are particularly adapted for reversible/reusable detection, remote detection, continuous monitoring, or rapid screening of environmental remediation and waste management sites. The vapochromic sensor is used in combination with various fiber optic arrangements to provide a calibrated qualitative and/or quantitative indication of the presence of VOCs.

Lancaster, Gregory D. (Idaho Falls, ID); Moore, Glenn A. (Idaho Falls, ID); Stone, Mark L. (Idaho Falls, ID); Reagen, William K. (Stillwater, MN)

1995-01-01T23:59:59.000Z

4

Partitioning of Volatile Organics in Diesel Particulate and Exhaust...  

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

and Exhaust Partitioning of Volatile Organics in Diesel Particulate and Exhaust Evaluation of how sampling details affect the measurement of volatile organic compounds in...

5

Detection of Low Volatility Organic Analytes on Soils Using Infrared...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Low Volatility Organic Analytes on Soils Using Infrared Reflection Spectroscopy. Abstract: Previous work on detection of low-volatility liquid organic (and...

6

Comparative Toxicity of Combined Particle and Semi-Volatile Organic...  

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

Toxicity of Combined Particle and Semi-Volatile Organic Fractioins of Gasoline and Diesel Emissions Comparative Toxicity of Combined Particle and Semi-Volatile Organic Fractioins...

7

Micropatterned Polymeric Gratings as Chemoresponsive Volatile Organic Compound  

E-Print Network [OSTI]

Micropatterned Polymeric Gratings as Chemoresponsive Volatile Organic Compound Sensors, Northwestern University, Evanston, Illinois 60208 Micropatterned polymeric diffraction gratings have been

8

Particulate Matter Sampling and Volatile Organic Compound Removal...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Organic Compound Removal for Characterization of Spark Ignited Direct Injection Engine Particulate Matter Sampling and Volatile Organic Compound Removal for Characterization...

9

TMVOC, simulator for multiple volatile organic chemicals  

SciTech Connect (OSTI)

TMVOC is a numerical simulator for three-phase non-isothermal flow of water, soil gas, and a multicomponent mixture of volatile organic chemicals (VOCs) in multidimensional heterogeneous porous media. It is an extension of the TOUGH2 general-purpose simulation program developed at the Lawrence Berkeley National Laboratory. TMVOC is designed for applications to contamination problems that involve hydrocarbon fuel or organic solvent spills in saturated and unsaturated zones. It can model contaminant behavior under ''natural'' environmental conditions, as well as for engineered systems, such as soil vapor extraction, groundwater pumping, or steam-assisted source remediation. TMVOC is upwards compatible with T2VOC (Falta et al., 1995) and can be initialized from T2VOC-style initial conditions. The main enhancements in TMVOC relative to T2VOC are as follows: a multicomponent mixture of volatile organic chemicals can be modeled; any and all combinations of the three phases water-oil-gas are treated; several non-condensible gases may be present; diffusion is treated in all phases in a manner that is fully coupled with phase partitioning. This paper gives a brief summary of the methodology used in TMVOC as well as highlighting some implementation issues. Simulation of a NAPL spill and subsequent remediation is discussed for a 2-D vertical section of a saturated-unsaturated flow problem.

Pruess, Karsten; Battistelli, Alfredo

2003-03-25T23:59:59.000Z

10

aqueous volatile organic: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mirna 1997-01-01 39 Impacts of herbaceous bioenergy crops on atmospheric volatile organic composition and potential consequences Environmental Sciences and Ecology Websites...

11

FIELD SCREENING FOR HALOGENATED VOLATILE ORGANIC COMPOUNDS  

SciTech Connect (OSTI)

Western Research Institute (WRI) initiated exploratory work towards the development of new field screening methodology and a test kit to measure halogenated volatile organic compounds (VOCs) in the field. Heated diode and corona discharge sensors are commonly used to detect leaks of refrigerants from air conditioners, freezers, and refrigerators. They are both selective to the presence of carbon-halogen bonds. Commercially available heated diode and corona discharge leak detectors were procured and evaluated for halogenated VOC response. The units were modified to provide a digital readout of signal related to VOC concentration. Sensor response was evaluated with carbon tetrachloride and tetrachloroethylene (perchloroethylene, PCE), which represent halogenated VOCs with and without double bonds. The response characteristics were determined for the VOCs directly in headspace in Tedlar bag containers. Quantitation limits in air were estimated. Potential interferences from volatile hydrocarbons, such as toluene and heptane, were evaluated. The effect of humidity was studied also. The performance of the new devices was evaluated in the laboratory by spiking soil samples and monitoring headspace for halogenated VOCs. A draft concept of the steps for a new analytical method was outlined. The results of the first year effort show that both devices show potential utility for future analytical method development work towards the goal of developing a portable test kit for screening halogenated VOCs in the field.

John F. Schabron; Joseph F. Rovani Jr.; Theresa M. Bomstad

2002-06-01T23:59:59.000Z

12

In Vitro Genotoxicity of Particulate and Semi-Volatile Organic...  

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

Particulate and Semi-Volatile Organic Compound Exhaust Materails from a Set of Gasoline and a Set of Diesel Engine Vehicles Operated at 30F In Vitro Genotoxicity of Particulate...

13

FIELD SCREENING FOR HALOGENATED VOLATILE ORGANIC COMPOUNDS  

SciTech Connect (OSTI)

Western Research Institute (WRI) is continuing work toward the development of new screening methodology and a test kit to measure halogenated volatile organic compounds (VOCs) in the field. Heated diode and corona discharge sensors are commonly used to detect leaks of refrigerants from air conditioners, freezers, and refrigerators. They are both selective to the presence of halogens. In prior work, the devices were tested for response to carbon tetrachloride, heptane, toluene, and water vapors. In the current work, sensor response was evaluated with sixteen halogenated VOCs relative to carbon tetrachloride. The results show that the response of the various chlorinated VOCs is within an order of magnitude of the response to carbon tetrachloride for each of the sensors. Thus, for field screening a single response factor can be used. Both types of leak detectors are being further modified to provide an on-board LCD signal readout, which is related to VOC concentration. The units will be fully portable and will operate with 115-V line or battery power. Signal background, noise level, and response data on the Bacharach heated diode detector and the TIF corona discharge detector show that when the response curves are plotted against the log of concentration, the plot is linear to the upper limit for the particular unit, with some curvature at lower levels. When response is plotted directly against concentration, the response is linear at the low end and is curved at the high end. The dynamic ranges for carbon tetrachloride of the two devices from the lower detection limit (S/N=2) to signal saturation are 4-850 vapor parts per million (vppm) for the corona discharge unit and 0.01-70 vppm for the heated diode unit. Additional circuit modifications are being made to lower the detection limit and increase the dynamic response range of the corona discharge unit. The results indicate that both devices show potential utility for future analytical method development work toward the goal of developing a portable test kit for screening halogenated VOCs in the field.

John F. Schabron; Joseph F. Rovani, Jr.; Theresa M. Bomstad

2003-07-01T23:59:59.000Z

14

Online measurements of the emissions of intermediate-volatility and semi-volatile organic compounds from aircraft  

E-Print Network [OSTI]

A detailed understanding of the climate and air quality impacts of aviation requires measurements of the emissions of intermediate-volatility and semi-volatile organic compounds (I/SVOCs) from aircraft. Currently both the ...

Herndon, S. C.

15

Characteristics of the volatile organic compounds -- Arid Integrated Demonstration Site  

SciTech Connect (OSTI)

The Volatile Organic Compounds -- Arid Integrated Demonstration Program (VOC-Arid ID) is targeted at demonstration and testing of technologies for the evaluation and cleanup of volatile organic compounds and associated contaminants at arid DOE sites. The initial demonstration site is an area of carbon tetrachloride (CCl{sub 4}) contamination located near the center of the Hanford Site. The movement of CCl{sub 4} and other volatile organic contaminants in the subsurface is very complex. The problem at the Hanford Site is further complicated by the concurrent discharge of other waste constituents including acids, lard oil, organic phosphates, and transuranic radionuclides. In addition, the subsurface environment is very complex, with large spatial variabilities in hydraulic properties. A thorough understanding of the problem is essential to the selection of appropriate containment, retrieval, and/or in situ remedial technologies. The effectiveness of remedial technologies depends on knowing where the contaminants are, how they are held up in a given physical and chemical subsurface environment; and knowing the physical, chemical, and microbiological changes that are induced by the various remedial technologies.

Last, G.V.; Lenhard, R.J.; Bjornstad, B.N.; Evans, J.C.; Roberson, K.R.; Spane, F.A.; Amonette, J.E.; Rockhold, M.L.

1991-10-01T23:59:59.000Z

16

A two-dimensional volatility basis set – Part 2: Diagnostics of organic-aerosol evolution  

E-Print Network [OSTI]

We discuss the use of a two-dimensional volatility-oxidation space (2-D-VBS) to describe organic-aerosol chemical evolution. The space is built around two coordinates, volatility and the degree of oxidation, both of which ...

Donahue, N. M.

17

Volatile organic compound losses from sewage sludge-amended soils  

SciTech Connect (OSTI)

Volatile organic compounds (VOCs) applied to soil in sludge have been assumed to disappear quickly and completely. The VOC behavior in sludge-amended soils has been studied previously only in laboratory systems where the sludged soil has been spiked with compounds of interest. Behavior in these systems may not necessarily represent compound behavior in field soils to which contaminated sludge is added. A series of laboratory microcosm experiments were designed therefore to investigate the behavior of toluene, ethyl benzene, o-, m-, and p-xylene applied to soil in contaminated sludge, and factors influencing loss processes. The VOC loss from sludge-amended soil was well described by a simple one step pseudo-first-order model but in certain soils was better described by a two step first-order model. Volatilization was the predominant loss process. Rates of loss depended on sludge application rate, method of sludge application, soil properties, and on compound characteristics. Experiments indicated that spiking sludge-amended soils gave a reasonable indication of VOC loss rates from systems amended with contaminated sludge at least over a period of 23 d. The majority of VOCs applied to soils in sludge volatilizes quickly to the atmosphere over a few to 10s of days with a small fraction lost more slowly. Potential for VOC crop uptake, livestock ingestion, and contamination of ground water is low under routine, managed applications of sewage sludge to agricultural land.

Wilson, S.C.; Jones, K.C.

1999-08-01T23:59:59.000Z

18

Vehicular emission of volatile organic compounds (VOCs) from a tunnel study in Hong Kong  

E-Print Network [OSTI]

Chemistry and Physics Vehicular emission of volatile organicY. , and Huang, Y. S. : Emission factors and characteristicslight-duty vehicle emissions, Environ. Sci. Technol. , 30,

2009-01-01T23:59:59.000Z

19

E-Print Network 3.0 - airborne volatile organic Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

predicting volatile organic concentration levels immediately downwind of wastewater treatment facilities... aeration which is used to increase the purification capacity also...

20

Detection of volatile organic compounds using surface enhanced Raman scattering  

SciTech Connect (OSTI)

The authors present the detection of volatile organic compounds directly in their vapor phase by surface-enhanced Raman scattering (SERS) substrates based on lithographically-defined two-dimensional rectangular array of nanopillars. The type of nanopillars is known as the tapered pillars. For the tapered pillars, SERS enhancement arises from the nanofocusing effect due to the sharp tip on top. SERS experiments were carried out on these substrates using various concentrations of toluene vapor. The results show that SERS signal from a toluene vapor concentration of ppm level can be achieved, and the toluene vapor can be detected within minutes of exposing the SERS substrate to the vapor. A simple adsorption model is developed which gives results matching the experimental data. The results also show promising potential for the use of these substrates in environmental monitoring of gases and vapors.

Chang, A S; Maiti, A; Ileri, N; Bora, M; Larson, C C; Britten, J A; Bond, T C

2012-03-22T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Chemical oxidation of volatile and semi-volatile organic compounds in soil  

SciTech Connect (OSTI)

Subsurface contamination with fuel hydrocarbons or chlorinated hydrocarbons is prevalent throughout the Department of Energy (DOE) complex and in many sites managed by the Environmental Protection Agency (EPA) Superfund program. The most commonly reported chlorinated hydrocarbons (occurring > 50% of DOE contaminated sites) were trichloroethylene (TCE), 1, 1, 1,-trichloroethane (TCA), and tetrachloroethylene (PCE) with concentrations in the range of 0.2 {mu}g/kg to 12,000 mg/kg. The fuel hydrocarbons most frequently reported as being present at DOE sites include aromatic compounds and polyaromatic compounds such as phenanthrene, pyrene, and naphthalene. The primary sources of these semi-volatile organic compounds (SVOCs) are coal waste from coal fired electric power plants used at many of these facilities in the past and gasoline spills and leaks. Dense non-aqueous phase liquids (DNAPLs) can migrate within the subsurface for long periods of time along a variety of pathways including fractures, macropores, and micropores. Diffusion of contaminants in the non-aqueous, aqueous, and vapor phase can occur from the fractures and macropores into the matrix of fine-textured media. As a result of these contamination processes, removal of contaminants from the subsurface and the delivery of treatment agents into and throughout contaminated regions are often hindered, making rapid and extensive remediation difficult.

Gates, D.D.; Siegrist, R.L.; Cline, S.R.

1995-06-01T23:59:59.000Z

22

Electrospun Polyurethane Fibers for Absorption of Volatile Organic Compounds from Air  

E-Print Network [OSTI]

Electrospun polyurethane fibers for removal of volatile organic compounds (VOC) from air with rapid VOC absorption and desorption have been developed. Polyurethanes based on 4,4-methylenebis(phenylisocyanate) (MDI) and ...

Scholten, Elke

23

Measurements of Volatile Organic Compounds Using Proton Transfer Reaction - Mass Spectrometry during the MILAGRO 2006 Campaign  

E-Print Network [OSTI]

Volatile organic compounds (VOCs) were measured by proton transfer reaction – mass spectrometry (PTR-MS) on a rooftop in the urban mixed residential and industrial area North Northeast of downtown Mexico City as part of ...

Fortner, E. C.

24

Volatile Organic Compound Discrimination using Nanostructured Polythiophene Sensors  

E-Print Network [OSTI]

in determining response to specific VOCs. I. INTRODUCTION A low-cost, low-power, and portable device for volatile selectivity. While there has been limited success in sensor development for greenhouse gases (CO2, CH4, N2O, NO and CO), the technology for detection of VOCs remains weak due to the similarity of chemical composition

Weiss, Lee E.

25

Environmental Aspects of Two Volatile Organic Compound Groundwater Treatment Designs at the Rocky Flats Site - 13135  

SciTech Connect (OSTI)

DOE's Rocky Flats Site in Colorado is a former nuclear weapons production facility that began operations in the early 1950's. Because of releases of hazardous substances to the environment, the federally owned property and adjacent offsite areas were placed on the CERCLA National Priorities List in 1989. The final remedy was selected in 2006. Engineered components of the remedy include four groundwater treatment systems that were installed before closure as CERCLA-accelerated actions. Two of the systems, the Mound Site Plume Treatment System and the East Trenches Plume Treatment System, remove low levels of volatile organic compounds using zero-valent iron media, thereby reducing the loading of volatile organic compounds in surface water resulting from the groundwater pathway. However, the zero-valent iron treatment does not reliably reduce all volatile organic compounds to consistently meet water quality goals. While adding additional zero-valent iron media capacity could improve volatile organic compound removal capability, installation of a solar powered air-stripper has proven an effective treatment optimization in further reducing volatile organic compound concentrations. A comparison of the air stripper to the alternative of adding additional zero-valent iron capacity to improve Mound Site Plume Treatment System and East Trenches Plume Treatment System treatment based on several key sustainable remediation aspects indicates the air stripper is also more 'environmentally friendly'. These key aspects include air pollutant emissions, water quality, waste management, transportation, and costs. (authors)

Michalski, Casey C.; DiSalvo, Rick; Boylan, John [Stoller LMS Team, 11025 Dover Street, Suite 1000, Westminster, CO 80021 (United States)] [Stoller LMS Team, 11025 Dover Street, Suite 1000, Westminster, CO 80021 (United States)

2013-07-01T23:59:59.000Z

26

A Tree's Response to Herbivory: Quantification of Biogenic Volatile Organic Compound Emissions  

E-Print Network [OSTI]

A Tree's Response to Herbivory: Quantification of Biogenic Volatile Organic Compound Emissions an abundant source of Secondary Organic Aerosols (SOA). These emissions are known to vary in quantity and composition due to both biogenic and anthropogenic stressors. In this study, BVOC emissions from bristlecone

Collins, Gary S.

27

Determination of Migration Parameters for Volatile Organic Compounds in Polyethylene Terephthalate and Nylon 6 by Dynamic Permeation Cell Method  

E-Print Network [OSTI]

Determination of Migration Parameters for Volatile Organic Compounds in Polyethylene Terephthalate, such as low-density polyethylene (LDPE), high-density polyethylene (HDPE), and polypropylene (PP); however

Heller, Barbara

28

Thermal engine driven heat pump for recovery of volatile organic compounds  

DOE Patents [OSTI]

The present invention relates to a method and apparatus for separating volatile organic compounds from a stream of process gas. An internal combustion engine drives a plurality of refrigeration systems, an electrical generator and an air compressor. The exhaust of the internal combustion engine drives an inert gas subsystem and a heater for the gas. A water jacket captures waste heat from the internal combustion engine and drives a second heater for the gas and possibly an additional refrigeration system for the supply of chilled water. The refrigeration systems mechanically driven by the internal combustion engine effect the precipitation of volatile organic compounds from the stream of gas.

Drake, Richard L. (Schenectady, NY)

1991-01-01T23:59:59.000Z

29

Volatile organic acids and microbial processes in the Yegua formation, east-central Texas  

E-Print Network [OSTI]

and Geophysics, Texas A&M University, College Station, TX, 77843, USA b Institute for Energy and the EnvironmentVolatile organic acids and microbial processes in the Yegua formation, east-central Texas Joyanto production of VOAs by microorganisms in mudstones, and net consumption of VOAs by SO4 reducing bacteria (SRB

Grossman, Ethan L.

30

Field Test to Demonstrate Real-Time In-Situ Detection of Volatile Organic Compounds  

E-Print Network [OSTI]

1 Field Test to Demonstrate Real-Time In-Situ Detection of Volatile Organic Compounds Hazmat Spill Center, Nevada Test Site September 19-25, 2001 Clifford K. Ho Sandia National Laboratories Albuquerque-filled 55- gallon drum at the Hazmat Spill Center at the Nevada Test Site. Background and Objectives Tens

Ho, Cliff

31

Low-Level Detections of Halogenated Volatile Organic Compounds in Groundwater  

E-Print Network [OSTI]

compounds; Groundwater management; Drinking water. Introduction Approximately one-half of the U and Hitt 2006 , or more complex process-based analyses utilizing groundwater models Eberts et al. 2005Low-Level Detections of Halogenated Volatile Organic Compounds in Groundwater: Use in Vulnerability

32

Monitoring of volatile organic pollutants in groundwater by passive diffusive bags (PDBs) Catherine Berho, Anne Togola, Benjamin  

E-Print Network [OSTI]

on classical water samples. These results highlighted that PDBs allow the measurement of the BTEX and volatileMonitoring of volatile organic pollutants in groundwater by passive diffusive bags (PDBs) Catherine used for groundwater monitoring such as low-flow peristaltic pumps can sample water slowly from wells

Paris-Sud XI, Université de

33

Monitoring Volatile Organic Tank Waste Using Cermet Microsensors  

SciTech Connect (OSTI)

Presently, very few inexpensive technologies exist in the marketplace that can determine the contents of tank waste or monitor the chemistry of tank constituents in near-real time. The research addressed this problem by developing and assessing ceramic-metallic based microsensors for determining the constituents of a liquid organic storage tank by examining the gases in the headspace of the tank. Overall, the WBO and YSZ sensors responded well to the chemicals in this study. Responses to various concentrations were distinguishable visually. This is a clear indication that pattern recognition tools will be effective in resolving the constituents and concentrations. In tests, such as the test with acetophenone, one sensor, the WBO sensor is not extremely effective. However, the other sensor, the YSZ sensor, is effective in resolving the concentrations. This supports the need to use an array of sensors, as one sensor may be reactive to a compound while another may not. In the course of this research, several interesting phenomena surfaced. New sensors, that were fabricated but not used in a contaminant gas, seemed to function more effectively and predictably if a ?conditioning? step was imposed upon them prior to use in square wave voltammetry. A conditioning step consists of running cyclic voltammetry prior to running square wave voltammetry. This step tends to ?cleanse? the sensor surface by providing a full -1.0 V to +1.0V sweep and both oxidizing and reducing compounds on the sensor surface. [Note: squarewave voltammetry will simply oxidize or reduce compounds ? it will not induce both reactions.] This sweep is essential for recovery between samples.

Edward G. Gatliff, Ph.D.; Laura R. Skubal, Ph.D.; Michael C. Vogt, Ph.D.

2006-03-13T23:59:59.000Z

34

Performance specifications for technology development: Application for characterization of volatile organic compounds in the environment  

SciTech Connect (OSTI)

This report contains information about technology development for the monitoring and remediation of environmental pollution caused by the release of volatile organic compounds. Topics discussed include: performance specification processes, gas chromatography, mass spectrometer, fiber-optic chemical sensors, infrared spectroscopy, Raman spectroscopy, piezoelectric sensors and electrochemical sensors. These methods are analyzed for their cost efficiency, accuracy, and the ability to meet the needs of the customer.

Carpenter, S.E.; Doskey, P.V.; Erickson, M.D.; Lindahl, P.C.

1994-07-01T23:59:59.000Z

35

CONTRIBUTION OF SEMI-VOLATILE ORGANIC MATERIAL TO AMBIENT PM2.5  

SciTech Connect (OSTI)

Both annual 24-h average and seasonal diurnal samples collected at NETL during the research program have been analyzed. The fine particulate components determined include PM{sub 2.5} mass, ammonium sulfate, ammonium nitrate, elemental and organic carbonaceous material and trace elements. The analysis of the nitrate and organic material includes both the identification of nonvolatile material retained by the particle collection filter and semi-volatile material lost from the particles during sample collection. The results obtained in these analyses indicate that both the semivolatile and nonvolatile organic material in the fine particles sampled at the NETL site originate from mobile emissions in the local area. However, the majority of the nonvolatile material is associated with primary emissions and the majority of the semi-volatile material is secondary, being formed from photochemical processes in the atmosphere. In contrast, the fine particulate sulfate does not originate from the local area but is transported into the study region, mostly from sources in the Ohio River Valley. These observations have been supported by both detailed meteorological and apportionment analysis of the data.

Delbert J. Eatough; William K. Modey; Rebecca Sizemore; Michael Simpson

2004-04-01T23:59:59.000Z

36

Volatile tritiated organic acids in stack effluents and in air surrounding contaminated materials  

SciTech Connect (OSTI)

A small fraction of the tritium released into the atmosphere from tritium-handling or solid waste storage facilities was shown to be in the form of volatile organic acids. The same compounds were also found, but at a much higher proportion, in the tritium evolved at room temperature from highly contaminated materials placed under air atmospheres. This might be due to the oxidation and labeling of hydrocarbon(s) by mechanisms that are presumably of a radiolytic nature. The new forms could have an impact on operational requirements and waste management strategies within a tritium facility and a fusion reactor hall. Further data are needed to assess the related doses.

Belot, Y.; Camus, H.; Marini, T.; Raviart, S. (Institut de Protection et de Surete Nucleaire (France))

1993-06-01T23:59:59.000Z

37

Literature review of stabilization/solidification of volatile organic compounds and the implications for Hanford grouts  

SciTech Connect (OSTI)

A literature review was conducted on the stabilization/solidification of volatile organic compounds (VOCs). Based on this literature, it is likely that the limestone-containing grout will not permanently immobilize VOCs and that no presently available additives can guarantee permanent immobilization. The Westinghouse hanford company grout may be fairly effective at retarding aqueous leaching of VOCs, and commercial additives can improve this performance. Significant VOC losses do occur during stabilization/solidification, and the high temperatures of the Westinghouse Hanford Company waste and grout should exacerbate this problem. In fact, these high temperatures raise doubts about the presence of VOCs in the double-shell tanks supernates.

Spence, R.D.; Osborne, S.C.

1993-09-01T23:59:59.000Z

38

Extended Research on Detection of Deception Using Volatile Organic Compound (VOC) Emissions  

SciTech Connect (OSTI)

A system that captures and analyzes volatile organic compound (VOC) emissions from skin surfaces may offer a viable alternative method to the polygraph instrument currently in use for detecting deception in U.S. government settings. Like the involuntary autonomic central nervous system response data gathered during polygraph testing, VOC emissions from the skin may provide data that can be used to detect stress caused by deception. Detecting VOCs, then, may present a noninvasive, non-intrusive method for observing, recording, and quantifying evidence of stress or emotional change.

Center for Human Reliability Studies

2006-06-01T23:59:59.000Z

39

Diversity of the Volatile Organic Compounds Emitted by 55 Species of Tropical Trees: a Survey in French Guiana  

E-Print Network [OSTI]

in French Guiana Elodie A. Courtois & C. E. Timothy Paine & Pierre-Alain Blandinieres & Didier Stien & Jean, LLC 2009 Abstract Volatile organic compounds (VOCs) are pro- duced by a broad range of organisms, from tropical tree species in a lowland rainforest of French Guiana. We discovered a remarkably high chemical

Chave, JĂ©rĂ´me

40

Origins of volatile organic compounds emerging from tank 241-C-106 during sluicing  

SciTech Connect (OSTI)

Unexpectedly high concentrations of inorganic gases and volatile organic compounds (VOC) were released from the ventilation stack of tank 241-C-106 during sluicing operations on November 18, 1998. Workers experienced serious discomfort. They reported an obnoxious acrid odor and the 450 ppm VOC in ventilation stack 296-C-006 exceeded the level approved in the air discharge permit. Consequently, the operation was terminated. Subsequent analyses of samples collected opportunistically from the stack indicated many organic compounds including heptenes, heptanones, and normal paraffin hydrocarbons (NPH) and their remnants were present. Subsequently, a process test designed to avoid unnecessary worker exposure and enable collection of analytical samples from the stack, the breathing area, and the receiver tank was conducted on December 16, 1998. The samples obtained during that operation, in which the maximum VOC content of the stack was approximately 35 ppm, have been analyzed by teams at Pacific Northwest National Laboratory and Special Analytic Services (SAS). This report examines the results of these investigations. Future revisions of the report will examine the analytical results obtained for samples collected during sluicing operations in March. This report contains the available evidence about the source term for these emissions. Chapter 2 covers characterization work, including historical information about the layers of waste in the tank, the location of organic compounds in these layers, the total organic carbon (TOC) content and the speciation of organic compounds. Chapter 3 covers the data for the samples from the ventilation stack, which has the highest concentrations of organic compounds. Chapter 4 contains an interpretation of the information connecting the composition of the organic emissions with the composition of the original source term. Chapter 5 summarizes the characterization work, the sample data, and the interpretation of the results.

STAUFFER, L.A.

1999-06-02T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Technology projects for characterization--monitoring of volatile organic compounds (VOCs)  

SciTech Connect (OSTI)

One hundred thirty technology project titles related to the characterization of volatile organic compounds (VOCs) at an arid site are listed alphabetically by first contact person in a master compilation that includes phone numbers, addresses, keywords, and short descriptions. Separate tables are presented for 62 field-demonstrated, 36 laboratory-demonstrated, and 35 developing technology projects. The technology projects in each of these three categories are also prioritized in separate summary tables. Additional tables are presented for a number of other categorizations of the technology projects: In Situ; Fiberoptic; Mass Spectrometer; Optical Spectroscopy; Raman or SERS; Ion Mobility or Acoustic; Associated; and Commercial. Four lists of contact person names are provided so details concerning the projects that deal with sampling, and VOCs in gases, waters, and soils (sediments) can be obtained. Finally, seven wide-ranging conclusions based on observations and experiences during this work are presented.

Junk, G.A.; Haas, W.J. Jr.

1992-07-01T23:59:59.000Z

42

Investigations of release phenomenon of volatile organic compounds and particulates from residual storage chip piles  

SciTech Connect (OSTI)

This paper outlines the method for estimating Particulate Matter and Volatile Organic Compounds (VOCs) emissions from wood handling and storage operations at a pulp mill. Fugitive particulate matter emissions from wood handling and storage operations are due to material load/dropout operations, wind erosion from storage piles and vehicular traffic on paved roads. The particulate matter emissions are a function of a number of variables like windspeed, surface moisture content, material silt content, and number of days of precipitation. Literature review attributes VOC emissions to biological, microbiological, chemical, and physical processes occurring in wood material storage pile. The VOC emissions are from the surface of these piles and the VOC released during retrieval of chips from the pile. VOC emissions are based on the chip throughput, number of turnovers, moisture content and surface area of the pile. The emission factors with the requisite calculation methodology to be utilized for quantifying VOC emissions from chip piles has been discussed in this paper.

Mohan, S.; Nagarkatti, M. [Trinity Consultants, Inc., Baton Rouge, LA (United States)

1996-12-31T23:59:59.000Z

43

ACTION CONCENTRATION FOR MIXTURES OF VOLATILE ORGANIC COMPOUNDS (VOC) & METHANE & HYDROGEN  

SciTech Connect (OSTI)

Waste containers may contain volatile organic compounds (VOCs), methane, hydrogen and possibly propane. These constituents may occur individually or in mixtures. Determining if a waste container contains a flammable concentration of flammable gases and vapors (from VOCs) is important to the safety of the handling, repackaging and shipping activities. This report provides the basis for determining the flammability of mixtures of flammable gases and vapors. The concentration of a mixture that is at the lowest flammability limit for that mixture is called the action concentration. The action concentration can be determined using total VOC concentrations or actual concentration of each individual VOC. The concentrations of hydrogen and methane are included with the total VOC or individual VOC concentration to determine the action concentration. Concentrations below this point are not flammable. Waste containers with gas/vapor concentrations at or above the action concentration are considered flammable.

MARUSICH, R.M.

2006-07-10T23:59:59.000Z

44

Carbon Monoxide Safety Tips  

E-Print Network [OSTI]

Protect yourself and your family from the deadly effects of carbon monoxide--a colorless, odorless poisonous gas. This publication describes the warning signs of carbon monoxide exposure and includes a home safety checklist....

Shaw, Bryan W.; Garcia, Monica L.

1999-07-26T23:59:59.000Z

45

FIELD SCREENING FOR HALOGENATED VOLATILE ORGANIC COMPOUNDS: THE NEW X-WAND HVOC SCREENING DEVICE  

SciTech Connect (OSTI)

Western Research Institute (WRI) has developed new methodology and a test kit to screen soil or water samples for halogenated volatile organic compounds (HVOCs) in the field. The technology has been designated the X-Wand{trademark} screening tool. The new device uses a heated diode sensor that is commonly used to detect leaks of refrigerants from air conditioners, freezers, and refrigerators. This sensor is selective to halogens. It does not respond to volatile aromatic hydrocarbons, such as those in gasoline, and it is not affected by high humidity. In the current work, the heated diode leak detectors were modified further to provide units with rapid response and enhanced sensitivity. The limit of detection for trichloroethylene TCE in air is 0.1 mg/m{sup 3} (S/N = 2). The response to other HVOCS relative to TCE is similar. Variability between sensors and changes in a particular sensor over time can be compensated for by normalizing sensor readings to a maximum sensor reading at 1,000 mg/m{sup 3} TCE. The soil TCE screening method was expanded to include application to water samples. Assuming complete vaporization, the detection limit for TCE in soil is about 1 ug/kg (ppb) for a 25-g sample in an 8-oz jar. The detection limit for TCE in water is about 1 ug/L (ppb) for a 25-mL sample in an 8-oz jar. This is comparable to quantitation limits of EPA GC/MS laboratory methods. A draft ASTM method for screening TCE contaminated soils using a heated diode sensor was successfully submitted for concurrent main committee and subcommittee balloting in ASTM Committee D 34 on Waste Management. The method was approved as ASTM D 7203-05, Standard Test Method for Screening Trichloroethylene (TCE)-Contaminated Soil Using a Heated Diode Sensor.

John F. Schabron; Susan S. Sorini; Joseph F. Rovani Jr

2006-03-01T23:59:59.000Z

46

Real-time monitoring of volatile organic compounds using chemical ionization mass spectroscopy: Final report  

SciTech Connect (OSTI)

Volatile organic compound (VOC) emission to the atmosphere is of great concern to semiconductor manufacturing industries, research laboratories, the public, and regulatory agencies. Some industries are seeking ways to reduce emissions by reducing VOCs at the point of use (or generation). This paper discusses the requirements, design, calibration, and use of a sampling inlet/quadrupole mass spectrometer system for monitoring VOCs in a semiconductor manufacturing production line. The system uses chemical ionization to monitor compounds typically found in the lithography processes used to manufacture semiconductor devices (e.g., acetone, photoresist). The system was designed to be transportable from tool to tool in the production line and to give the operator real-time feedback so the process(es) can be adjusted to minimize VOC emissions. Detection limits ranging from the high ppb range for acetone to the low ppm range fore other lithography chemicals were achieved using chemical ionization mass spectroscopy at a data acquisition rate of approximately 1 mass spectral scan (30 to 200 daltons) per second. A demonstration of exhaust VOC monitoring was performed at a working semiconductor fabrication facility during actual wafer processing.

Thornberg, S.M.; Mowry, C.D.; Keenan, M.R.; Bender, S.F.A. [Sandia National Labs., Albuquerque, NM (United States). Gas Analysis Lab.; Owen, T. [Intel Corp., Rio Rancho, NM (United States)

1997-04-01T23:59:59.000Z

47

Volatilization of selected organic compounds from a creosote-waste land-treatment facility. Master's thesis  

SciTech Connect (OSTI)

The purpose of this research was to evaluate the emissions of volatile and semi-volatile compounds which are constituents of a complex creosote waste from laboratory simulations of a land treatment system to assess the potential human exposure to hazardous compounds from this source. In addition, the Thibodeaux-Hwang Air Emission Release Rate (AERR) model was evaluated for its use in predicting emission rates of hazardous constituents of creosote wood preservative waste from land treatment facilities. A group of hazardous volatile and semi-volatile constituents present in the creosote waste was selected for evaluation in this study and included a variety of polynuclear aromatic hydrocarbons (PNA's), phenol, and chlorinated and substituted phenols.

Scott, E.J.

1989-01-01T23:59:59.000Z

48

Carbon monoxide absorbing liquid  

SciTech Connect (OSTI)

The present disclosure is directed to a carbon monoxide absorbing liquid containing a cuprous ion, hydrochloric acid and titanum trichloride. Titanium trichloride is effective in increasing the carbon monoxide absorption quantity. Furthermore, titanium trichloride remarkably increases the oxygen resistance. Therefore, this absorbing liquid can be used continuously and for a long time.

Arikawa, Y.; Horigome, S.; Kanehori, K.; Katsumoto, M.

1981-07-07T23:59:59.000Z

49

Identifying Sources of Volatile Organic Compounds and Aldehydes in a High Performance Building  

SciTech Connect (OSTI)

The developers of the Paharpur Business Center (PBC) and Software Technology Incubator Park in New Delhi, India offer an environmentally sustainable building with a strong emphasis on energy conservation, waste minimization and superior indoor air quality (IAQ). To achieve the IAQ goal, the building utilizes a series of air cleaning technologies for treating the air entering the building. These technologies include an initial water wash followed by ultraviolet light treatment and biolfiltration using a greenhouse located on the roof and numerous plants distributed throughout the building. Even with the extensive treatment of makeup air and room air in the PBC, a recent study found that the concentrations of common volatile organic compounds and aldehydes appear to rise incrementally as the air passes through the building from the supply to the exhaust. This finding highlights the need to consider the minimization of chemical sources in buildings in combination with the use of advanced air cleaning technologies when seeking to achieve superior IAQ. The goal of this project was to identify potential source materials for indoor chemicals in the PBC. Samples of building materials, including wood paneling (polished and unpolished), drywall, and plastic from a hydroponic drum that was part of the air cleaning system, were collected from the building for testing. All materials were collected from the PBC building and shipped to the Lawrence Berkeley National Laboratory (LBNL) for testing. The materials were pre-conditioned for two different time periods before measuring material and chemical specific emission factors for a range of VOCs and Aldehydes. Of the six materials tested, we found that the highest emitter of formaldehyde was new plywood paneling. Although polish and paint contribute to some VOC emissions, the main influence of the polish was in altering the capacity of the surface to accumulate formaldehyde. Neither the new nor aged polish contributed significantly to formaldehyde emissions. The VOC emission stream (excluding formaldehyde) was composed of up to 18 different chemicals and the total VOC emissions ranged in magnitude from 7 mu g/m2/h (old wood with old polish) to>500 mu g/m2/h (painted drywall). The formaldehyde emissions from drywall and old wood with either new or old polish were ~;;15 mu g/m2/h while the new wood material emitted>100 mu g/m2/h. However, when the projected surface area of each material in the building was considered, the new wood, old wood and painted drywall material all contributed substantially to the indoor formaldehyde loading while the coatings contributed primarily to the VOCs.

Ortiz, Anna C.; Russell, Marion; Lee, Wen-Yee; Apte, Michael; Maddalena, Randy

2010-09-20T23:59:59.000Z

50

A theoretical study of discrete air phase migration contaminated with a volatile organic  

E-Print Network [OSTI]

saturated porous media, while the second part presents volatile contaminant transport in bubbly air flow. The first part of the study is developed in order to determine bubble rise velocity in four flow regimes i.e., steady state, quasi-steady state...

Drazenovic, Mirna

1997-01-01T23:59:59.000Z

51

Effect of Organic Capping Layers over Monodisperse Platinum Nanoparticles upon Activity for Ethylene Hydrogenation and Carbon Monoxide Oxidation  

SciTech Connect (OSTI)

The influence of oleylamine (OA), trimethyl tetradecyl ammonium bromide (TTAB), and polyvinlypyrrolidone (PVP) capping agents upon the catalytic properties of Pt/silica catalysts was evaluated. Pt nanoparticles that were 1.5 nm in size were synthesized by the same procedure (ethylene glycol reduction under basic conditions) with the various capping agents added afterward for stabilization. Before examining catalytic properties for ethylene hydrogenation and CO oxidation, the Pt NPs were deposited onto mesoporous silica (SBA-15) supports and characterized by transmission electron microscopy (TEM), H{sub 2} chemisorption, and elemental analysis (ICP-MS). PVP- and TTAB-capped Pt yielded mass-normalized reaction rates that decreased with increasing pretreatment temperature, and this trend was attributed to the partial coverage of the Pt surface with decomposition products from the organic capping agent. Once normalized to the Pt surface area, similar intrinsic activities were obtained regardless of the pretreatment temperature, which indicated no influence on the nature of the active sites. Consequently, a chemical probe technique using intrinsic activity for ethylene hydrogenation was demonstrated as an acceptable method for estimating the metallic surface areas of Pt. Amine (OA) capping exhibited a detrimental influence on the catalytic properties as severe deactivation and low activity were observed for ethylene hydrogenation and CO oxidation, respectively. These results were consistent with amine groups being strong poisons for Pt surfaces, and revealed the need to consider the effects of capping agents on the catalytic properties.

Kuhn, John N.; Tsung, Chia-Kuang; Huang, Wenyu; Somorjai, Gabor A.

2009-03-24T23:59:59.000Z

52

Infrared Spectroscopy of Wild 2 Particle Hypervelocity Tracks in Stardust Aerogel: Evidence for the presence of Volatile Organics in Comet Dust  

SciTech Connect (OSTI)

Infrared spectroscopy maps of some tracks, made by cometary dust from 81P/Wild 2 impacting Stardust aerogel, reveal an interesting distribution of volatile organic material. Out of six examined tracks three show presence of volatile organic components possibly injected into the aerogel during particle impacts. When particle tracks contained excess volatile organic material, they were found to be -CH{sub 2}-rich. Off-normal particle tracks could indicate impacts by lower velocity particles that could have bounced off the Whipple shield, therefore carry off some contamination from it. However, this theory is not supported by data that show excess organic-rich material in normal and off-normal particle tracks. It is clear that the population of cometary particles impacting the Stardust aerogel collectors also include grains that contained little or none of this volatile organic component. This observation is consistent with the highly heterogeneous nature of the collected grains, as seen by a multitude of other analytical techniques. We propose that at least some of the volatile organic material might be of cometary origin based on supporting data shown in this paper. However, we also acknowledge the presence of carbon (primarily as -CH{sub 3}) in the original aerogel, which complicates interpretation of these results.

Bajt, S; Sandford, S A; Flynn, G J; Matrajt, G; Snead, C J; Westphal, A J; Bradley, J P

2007-08-28T23:59:59.000Z

53

ALDEHYDE AND OTHER VOLATILE ORGANIC CHEMICAL EMISSIONS IN FOUR FEMA TEMPORARY HOUSING UNITS ? FINAL REPORT  

SciTech Connect (OSTI)

Four unoccupied FEMA temporary housing units (THUs) were studied to assess their indoor emissions of volatile organic compounds including formaldehyde. Measurement of whole-THU VOC and aldehyde emission factors (mu g h-1 per m2 of floor area) for each of the four THUs were made at FEMA's Purvis MS staging yard using a mass balance approach. Measurements were made in the morning, and again in the afternoon in each THU. Steady-state indoor formaldehyde concentrations ranged from 378 mu g m-3 (0.31ppm) to 632 mu g m-3 (0.52 ppm) in the AM, and from 433 mu g m-3 (0.35 ppm) to 926 mu g m-3 (0.78 ppm) in the PM. THU air exchange rates ranged from 0.15 h-1 to 0.39 h-1. A total of 45 small (approximately 0.025 m2) samples of surface material, 16 types, were collected directly from the four THUs and shipped to Lawrence Berkeley Laboratory. The material samples were analyzed for VOC and aldehyde emissions in small stainless steel chambers using a standard, accurate mass balance method. Quantification of VOCs was done via gas chromatography -- mass spectrometry and low molecular weight aldehydes via high performance liquid chromatography. Material specific emission factors (mu g h-1 per m2 of material) were quantified. Approximately 80 unique VOCs were tentatively identified in the THU field samples, of which forty-five were quantified either because of their toxicological significance or because their concentrations were high. Whole-trailer and material specific emission factors were calculated for 33 compounds. The THU emission factors and those from their component materials were compared against those measured from other types of housing and the materials used in their construction. Whole THU emission factors for most VOCs were typically similar to those from comparative housing. The three exceptions were exceptionally large emissions of formaldehyde and TMPD-DIB (a common plasticizer in vinyl products), and somewhat elevated for phenol. Of these three compounds, formaldehyde was the only one with toxicological significance at the observed concentrations. Whole THU formaldehyde emissions ranged from 173 to 266 mu g m-2 h 1 in the morning and 257 to 347 mu g m-2 h-1 in the afternoon. Median formaldehyde emissions in previously studied site-built and manufactured homes were 31 and 45 mu g m-2 h-1, respectively. Only one of the composite wood materials that was tested appeared to exceed the HUD formaldehyde emission standard (430 mu g/m2 h-1 for particleboard and 130 mu g/m2 h-1 for plywood). The high loading factor (material surface area divided by THU volume) of composite wood products in the THUs and the low fresh air exchange relative to the material surface area may be responsible for the excessive concentrations observed for some of the VOCs and formaldehyde.

Salazar, Olivia; Maddalena, Randy L.; Russell, Marion; Sullivan, Douglas P.; Apte, Michael G.

2008-05-04T23:59:59.000Z

54

Cancer risks from soil emissions of volatile organic compounds at the Lawrence Livermore National Laboratory  

SciTech Connect (OSTI)

The emission isolation flux chamber (EIFC) methodology was applied to Superfund investigations at the Lawrence Livermore National Laboratory Site 300 to determine if on-site workers were exposed to VOCs volatilizing from the subsurface and what, if any, health risks could be attributed to the inhalation of the VOCs volatilizing from the subsurface. During July and August of 1996, twenty, eighteen, and twenty six VOC soil vapor flux samples were collected in the Building 830, 832, and 854 areas, respectively using EIFCS. The VOC concentrations in the vapor samples were used to calculate soil flux rates which were used as input into an air dispersion model to calculate ambient air exposure-point concentrations. The exposure-point concentrations were compared to EPA Region IX Preliminary Remediation Goals (PRGs). Buildings 830 and 832 exposure-point concentrations were less then the PRGs therefore no cancer risks were calculated. The cancer risks for Building 854 ranged from 1.6 x 10{sup -7} to 2.1 x 10{sup -6}. The resultant inhalation cancer risks were all within the acceptable range, implying that on-site workers were not exposed to VOC vapors volatilizing from the subsurface soil that could have significant cancer risks. Therefore remediation in these areas would not be necessary.

Dibley, V. R., LLNL

1998-02-01T23:59:59.000Z

55

Energy Efficient Removal of Volatile Organic Compounds (VOCs) and Organic Hazardous Air Pollutants (o-HAPs) from Industrial Waste Streams by Direct Electron Oxidation  

SciTech Connect (OSTI)

This research program investigated and quantified the capability of direct electron beam destruction of volatile organic compounds and organic hazardous air pollutants in model industrial waste streams and calculated the energy savings that would be realized by the widespread adoption of the technology over traditional pollution control methods. Specifically, this research determined the quantity of electron beam dose required to remove 19 of the most important non-halogenated air pollutants from waste streams and constructed a technical and economic model for the implementation of the technology in key industries including petroleum refining, organic & solvent chemical production, food & beverage production, and forest & paper products manufacturing. Energy savings of 75 - 90% and green house gas reductions of 66 - 95% were calculated for the target market segments.

Testoni, A. L.

2011-10-19T23:59:59.000Z

56

Estimated monthly emissions of sulfur dioxide, oxides of nitrogen, and volatile organic compounds for the 48 contiguous states, 1985-1986: Volume 2, Sectoral emissions by month for states  

SciTech Connect (OSTI)

A listing by source of sulfur dioxide, nitrogen oxides and volatile organic compounds emitted in 48 states of the US is provided. (CBS)

Kohout, E.J.; Knudson, D.A.; Saricks, C.L.; Miller, D.J.

1987-11-01T23:59:59.000Z

57

Composites for removing metals and volatile organic compounds and method thereof  

SciTech Connect (OSTI)

Functionalized hydrophobic aerogel/solid support structure composites have been developed to remove metals and organic compounds from aqueous and vapor media. The targeted metals and organics are removed by passing the aqueous or vapor phase through the composite which can be in molded, granular, or powder form. The composites adsorb the metals and the organics leaving a purified aqueous or vapor stream. The species-specific adsorption occurs through specific functionalization of the aerogels tailored towards specific metals and/or organics. After adsorption, the composites can be disposed of or the targeted metals and/or organics can be reclaimed or removed and the composites recycled.

Coronado, Paul R. (Livermore, CA); Coleman, Sabre J. (Oakland, CA); Reynolds, John G. (San Ramon, CA)

2006-12-12T23:59:59.000Z

58

Observations of nonmethane hydrocarbons and oxygenated volatile organic compounds at a rural site in the southeastern United States  

SciTech Connect (OSTI)

Measurements of an extensive range of nonmethane hydrocarbons (NMHCs) including alkanes, alkenes, and aromatics, and oxygenated volatile organic compounds (OVOCs) including alcohols, ketones, and aldehydes were conducted for several weeks during the summer of 1995 as part of the Southern Oxidants Study (SOS) at a rural experimental site (Youth, Inc.) 32 km southeast of Nashville, Tennessee, in the southeastern United States. These measurements were conducted to (1) determine the absolute magnitude and variability of oxygenated compounds found in a contemporary rural region; (2) assess the importance of the measured ambient levels of OVOCs on a photochemical reactivity basis relative to the more commonly determined NMHCs; and (3) to evaluate our ability to accurately measure oxygenates by the current techniques employed under a field study scenario. Several other physical (temperature, insolation, etc.), meteorological (wind velocity, wind direction, atmospheric structure, and boundary layer height), and chemical (criterion pollutants, NO{sub x}, SO{sub 2}, CO, O{sub 3}, etc.) parameters were measured concurrently with the NMHC and OVOC measurements. During the study period, OVOCs were consistently the dominant compounds present, and methanol and acetone had the highest mixing ratios. Although OVOCs made up the majority of the volatile organic compound component on a mass basis, a substantial sink for OH was isoprene and its immediate oxidation products, methacrolein and methyl vinyl ketone. In combination with CO and formaldehyde, these compounds comprised about 85{percent} of the observed OH reactivity at the site. Acetaldehyde and methanol were responsible for an additional 10{percent}, with the NMHCs and remaining OVOCs making up the final 5{percent} of the measured OH reactivity at the site. These observed patterns reinforce recent studies which find OVOCs to be an important component of the rural troposphere. {copyright} 1998 American Geophysical Union

Riemer, Daniel; Pos, Willer; Milne, Peter; Farmer, Charlesk; Zika, Rod [Division of Marine and Atmospheric Chemistry, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida (United States)] [Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, Colorado (United States)] [Atmospheric Sciences, Tennessee Valley Authority, Muscle Shoals, Alabama (United States)] Apel, Eric [Atmospheric Chemistry Group, Mantech Environmental Research Triangle Park, North Carolina (United States)] Olszyna, Ken [National Environmental Research Laboratory, U.S. EPA. Research Triangle Park, North Carolina (United States)] Kliendienst, Tad [Department of Chemistry, Western Michigan University, Kalamazoo, Michigan (United States)] Lonneman, William [Departments of Chemistry, and Earth and Atmospheric Science, Purdue University, West Lafayette, Indiana (United States); Shepson, Paul; Starn, Tim

1998-11-01T23:59:59.000Z

59

Carbon tetrachloride contamination, 200 West Area, Hanford Site: Arid Site Integrated Demonstration for remediation of volatile organic compounds  

SciTech Connect (OSTI)

The Arid State Integrated Demonstration is a US Department of Energy (DOE) program targeted at the acquisition, development, demonstration, and deployment of technologies for evaluation and cleanup of volatile organic and associated contaminants in soils and ground waters. Several DOE laboratories, universities, and industry will participate in the program. Candidate technologies will be demonstrated in the areas of site characterization; performance prediction, monitoring, and evaluations; contaminant extraction and ex situ treatment; in situ remediations; and site closure and monitoring. The performance of these demonstrated technologies will be compared to baseline technologies and documented to promote the transfer of new technologies to industry for use at DOE facilities. The initial host site is the Hanford Site's 200 West Area. The location of the demonstration contains primarily carbon tetrachloride (CCl{sub 4}), chloroform, and a variety of associated mixed waste contaminants. Chemical processes used to recover and purify plutonium at Hanford's plutonium finishing plant (Z Plant) resulted in the production of actinide-bearing waste liquid. Both aqueous and organic liquid wastes were generated, and were routinely discharged to subsurface disposal facilities. The primary radionuclide in the waste streams was plutonium, and the primary organic was CCl{sub 4}. This paper contains brief descriptions of the principal CCl{sub 4} waste disposal facilities in Hanford's 200 West Area, associated hydrogeology, existing information on the extent of soil and ground-water contamination, and a conceptual outline of suspected subsurface CCl{sub 4} distributions.

Last, G.V. (Pacific Northwest Lab., Richland, WA (United States)); Rohay, V.J. (Westinghouse Hanford Co., Richland, WA (United States))

1991-05-06T23:59:59.000Z

60

Carbon tetrachloride contamination, 200 West Area, Hanford Site: Arid Site Integrated Demonstration for remediation of volatile organic compounds  

SciTech Connect (OSTI)

The Arid State Integrated Demonstration is a US Department of Energy (DOE) program targeted at the acquisition, development, demonstration, and deployment of technologies for evaluation and cleanup of volatile organic and associated contaminants in soils and ground waters. Several DOE laboratories, universities, and industry will participate in the program. Candidate technologies will be demonstrated in the areas of site characterization; performance prediction, monitoring, and evaluations; contaminant extraction and ex situ treatment; in situ remediations; and site closure and monitoring. The performance of these demonstrated technologies will be compared to baseline technologies and documented to promote the transfer of new technologies to industry for use at DOE facilities. The initial host site is the Hanford Site`s 200 West Area. The location of the demonstration contains primarily carbon tetrachloride (CCl{sub 4}), chloroform, and a variety of associated mixed waste contaminants. Chemical processes used to recover and purify plutonium at Hanford`s plutonium finishing plant (Z Plant) resulted in the production of actinide-bearing waste liquid. Both aqueous and organic liquid wastes were generated, and were routinely discharged to subsurface disposal facilities. The primary radionuclide in the waste streams was plutonium, and the primary organic was CCl{sub 4}. This paper contains brief descriptions of the principal CCl{sub 4} waste disposal facilities in Hanford`s 200 West Area, associated hydrogeology, existing information on the extent of soil and ground-water contamination, and a conceptual outline of suspected subsurface CCl{sub 4} distributions.

Last, G.V. [Pacific Northwest Lab., Richland, WA (United States); Rohay, V.J. [Westinghouse Hanford Co., Richland, WA (United States)

1991-05-06T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Occurrence and Potential Human-Health Relevance of Volatile Organic Compounds in Drinking Water from Domestic Wells in the United States  

E-Print Network [OSTI]

Occurrence and Potential Human-Health Relevance of Volatile Organic Compounds in Drinking Water from Domestic Wells in the United States *Barbara L. Rowe1 , Patricia L. Toccalino2 , Michael J. Moran1 , John S. Zogorski1 , Curtis V. Price1 1 United States Geological Survey, Road, Rapid City, SD 57702 USA

62

Methyl tert-butyl ether (MTBE) is a volatile organic com-pound (VOC) derived from natural gas that is added to gas-  

E-Print Network [OSTI]

Methyl tert-butyl ether (MTBE) is a volatile organic com- pound (VOC) derived from natural gas Water in Urban and Agricultural Areas made from methanol, which is derived primarily from natural gas that is added to gas- oline either seasonally or year round in many parts of the United States to increase

63

Communication accepte: Healthy Buildings/IAQ'97 Washington DC, septembre 1997Communication accepte: Healthy Buildings/IAQ'97 Washington DC, septembre 1997 DISCRIMINATION OF VOLATILE ORGANIC COMPOUNDS  

E-Print Network [OSTI]

Communication acceptée: Healthy Buildings/IAQ'97 Washington DC, septembre 1997Communication acceptée: Healthy Buildings/IAQ'97 Washington DC, septembre 1997 DISCRIMINATION OF VOLATILE ORGANIC manuscript, published in "4th International Conference on Healthy Buildings'97, Washington : United States

Paris-Sud XI, Université de

64

Effect of moisture on air stripping of non volatile organic contaminants from soil  

E-Print Network [OSTI]

, a fluid phase and a solid phase, similar to the one used for packed bed adsorbers. Mass transfer between the phases was assumed to be controlled by sorption, with first order surface kinetics describing the change of contaminant concentration... . B. Objectives . . Page 1 2 A. Soil Composition and Interaction with Organic Compounds . . B. Effect of Soil Moisture on Contaminant Transport . C. Mathematical Modeling of Contaminant Transport in Soil . D. Air Stripping of Organic...

Alvarez, Roberto

1991-01-01T23:59:59.000Z

65

Volatile organic acids and microbial processes in the Yegua formation, east-central Texas  

E-Print Network [OSTI]

transported into the aquifer (3.2 µmol·l-1·m·a-1), the CO2 production rate in the aquifer sands is 5.3 µmol·l-1·m·a-1. This slow mineralization rate of in situ organic matter is within the range for deep aquifers, and probably accounts for the long...

Routh, J.; Grossman, E. L.; Ulrich, G. A.; Suflita, J. M.

2000-01-01T23:59:59.000Z

66

Final Report on Testing of Off-Gas Treatment Technologies for Abatement of Atmospheric Emissions of Chlorinated Volatile Organic Compounds  

SciTech Connect (OSTI)

The purpose of this report is to summarize the results of the program for off-gas treatment of atmospheric emissions of chlorinated volatile organic compounds (CVOCs), in particular trichloroethylene (TCE) and perchloroethylene (PCE). This program was funded through the Department of Energy Office of Technology Development`s VOC`s in Non-Arid Soils Integrated Demonstration (VNID). The off-gas treatment program was initiated after testing of in-situ air stripping with horizontal wells was completed (Looney et al., 1991). That successful test expectedly produced atmospheric emissions of CVOCs that were unabated. It was decided after that test that an off-gas treatment is an integral portion of remediation of CVOC contamination in groundwater and soil but also because several technologies were being developed across the United States to mitigate CVOC emissions. A single platform for testing off-gas treatment technologies would facilitate cost effective evaluation of the emerging technologies. Another motivation for the program is that many CVOCs will be regulated under the Clean Air Act Amendments of 1990 and are already regulated by many state regulatory programs. Additionally, compounds such as TCE and PCE are pervasive subsurface environmental contaminants, and, as a result, a small improvement in terms of abatement efficiency or cost will significantly reduce CVOC discharges to the environment as well as costs to United States government and industry.

Jarosch, T.R.; Haselow, J.S.; Rossabi, J.; Burdick, S.A.; Raymond, R.; Young, J.E.; Lombard, K.H.

1995-01-23T23:59:59.000Z

67

Emissions of volatile organic compounds from stationary combustion sources: Numerical modeling capabilities  

SciTech Connect (OSTI)

A collaborative research program initiated to study the emissions of a wide variety of chemical species from stationary combustion systems. These product species have been included in the Clean Air act legislation and their emissions must be rigidly controlled, but there is a need for much better understanding of the physical and chemical mechanisms that produce and consume them. We are using numerical modeling study the chemical reactions and fluid mechanical factors that occur in industrial processes: we are examining systems including premixed and diffusion flames, stirred reactors and plug flow reactors in these modeling studies to establish the major factors leading to emissions of these chemicals. In addition, we are applying advanced laser diagnostic techniques to validate the model predictions and to study the possibilities of developing sophisticated sensors to detect emissions of undesirable species in real time. This paper will discuss the organization of this collaborative effort and its results to date.

Seebold, J.G. [Chevron Research and Technology Co., Richmond, CA (United States); Kee, R.J.; Lutz, A.J. [Sandia National Labs., Albuquerque, NM (United States); Pitz, W.J.; Westbrook, C.K. [Lawrence Livermore National Lab., CA (United States); Senkan, S. [California Univ., Los Angeles, CA (United States)

1992-09-01T23:59:59.000Z

68

Modeling kinetic partitioning of secondary organic aerosol and size distribution dynamics: representing effects of volatility, phase state, and particle-phase reaction  

SciTech Connect (OSTI)

Evidence is mounting that the majority of the climatically active aerosols are produced through the growth of smaller particles via secondary organic aerosol (SOA) formation from gas-to-particle conversion of anthropogenic and biogenic volatile organic compounds (VOCs). The timescale of SOA partitioning and the associated size distribution dynamics are expected to depend on the gas-phase oxidation of the precursor VOCs and their products, volatility of these organic solutes, composition and phase state of the pre-existing particles, and diffusivity and reactivity of the solute within the particle phase. This paper describes a new framework for modeling kinetic gas-particle partitioning of SOA, with an analytical treatment for the diffusion-reaction process within the particle phase. The formulation is amenable for eventual use in regional and global climate models, although it currently awaits implementation of the actual particle-phase reactions that are important for SOA formation. In the present work, the model is applied to investigate the competitive growth dynamics of the Aitken and accumulation mode particles while the Kelvin effect and coagulation are neglected for simplicity. The timescale of SOA partitioning and evolution of number and composition size distributions are evaluated for a range of solute volatilities (C*), particle-phase bulk diffusivities (Db), and particle-phase reactivity, as exemplified by a pseudo-first-order rate constant (kc). Results show that irreversible condensation of non-volatile organic vapors (equivalent to ) produces significant narrowing of the size distribution. At the other extreme, non-reactive partitioning of semi-volatile organic vapors is volume-controlled in which the final (equilibrium) size distribution simply shifts to the right on the diameter axis while its shape remains unchanged. However, appreciable narrowing of the size distribution may occur when the pre-existing particles are highly viscous semi-solids such that small particles reach quasi-equilibrium much faster than the large ones. In the case of reactive partitioning (finite ), the size distribution experiences permanent narrowing, which is especially pronounced for Db < 10-13 cm2 s-1 and kc > 0.01 s-1. As a result, both number and composition size distributions are needed to effectively constrain and evaluate the next generation of SOA models that treat phase state thermodynamics, particle-phase diffusion and particle-phase chemical reactions.

Zaveri, Rahul A.; Easter, Richard C.; Shilling, John E.; Seinfeld, J. H.

2014-05-27T23:59:59.000Z

69

TECHNICAL JUSTIFICATION FOR CHOOSING PROPANE AS A CALIBRATION AGENT FOR TOTAL FLAMMABLE VOLATILE ORGANIC COMPOUND (VOC) DETERMINATIONS  

SciTech Connect (OSTI)

This document presents the technical justification for choosing and using propane as a calibration standard for estimating total flammable volatile organic compounds (VOCs) in an air matrix. A propane-in-nitrogen standard was selected based on a number of criteria: (1) has an analytical response similar to the VOCs of interest, (2) can be made with known accuracy and traceability, (3) is available with good purity, (4) has a matrix similar to the sample matrix, (5) is stable during storage and use, (6) is relatively non-hazardous, and (7) is a recognized standard for similar analytical applications. The Waste Retrieval Project (WRP) desires a fast, reliable, and inexpensive method for screening the flammable VOC content in the vapor-phase headspace of waste containers. Table 1 lists the flammable VOCs of interest to the WRP. The current method used to determine the VOC content of a container is to sample the container's headspace and submit the sample for gas chromatography--mass spectrometry (GC-MS) analysis. The driver for the VOC measurement requirement is safety: potentially flammable atmospheres in the waste containers must be allowed to diffuse prior to processing the container. The proposed flammable VOC screening method is to inject an aliquot of the headspace sample into an argon-doped pulsed-discharge helium ionization detector (Ar-PDHID) contained within a gas chromatograph. No actual chromatography is performed; the sample is transferred directly from a sample loop to the detector through a short, inert transfer line. The peak area resulting from the injected sample is proportional to the flammable VOC content of the sample. However, because the Ar-PDHID has different response factors for different flammable VOCs, a fundamental assumption must be made that the agent used to calibrate the detector is representative of the flammable VOCs of interest that may be in the headspace samples. At worst, we desire that calibration with the selected calibrating agent overestimate the value of the VOCs in a sample. By overestimating the VOC content of a sample, we want to minimize false negatives. A false negative is defined as incorrectly estimating the VOC content of the sample to be below programmatic action limits when, in fact, the sample,exceeds the action limits. The disadvantage of overestimating the flammable VOC content of a sample is that additional cost may be incurred because additional sampling and GC-MS analysis may be required to confirm results over programmatic action limits. Therefore, choosing an appropriate calibration standard for the Ar-PDHID is critical to avoid false negatives and to minimize additional analytical costs.

DOUGLAS, J.G.

2006-07-06T23:59:59.000Z

70

SENSITIVE OPTOACOUSTIC DETECTION OF CARBON MONOXIDE BY RESONANCE ABSORPTION  

E-Print Network [OSTI]

Monoxide by Resonance Absorption Robert Gerlach and Nabil M.MONOXIDE BY RESONANCE ABSORPTION Robert Gerlach and Nabil M.the context of atmospheric absorption. The carbon monoxide

Gerlach, R.

2011-01-01T23:59:59.000Z

71

Characterization of the Sources and Concentrations of Formaldehyde and other volatile organic compounds in four new manufactured houses  

SciTech Connect (OSTI)

The concentrations of formaldehyde, 52 individual volatile organic compounds (VOCs) and total VOCs (TVOC) were measured in four new manufactured houses on three occasions over a period of approximately nine months following completion of their construction. The houses were furnished, but unoccupied, model homes produced by a single U.S. manufacturer. Several of the houses incorporated interior finish materials with lower VOC emissions than standard materials. One house had a modified ventilation system. Ventilation rates were measured concurrently with the collection of air samples. A steady-state mass-balance model was used to calculate the area-specific emission rates of the target compounds and TVOC. The emissions of formaldehyde and VOCs from a specimen of plywood used as the floor sheeting were additionally quantified. The median formaldehyde concentration in the four houses was 37 parts-per-billion ( ppb). The formaldehyde concentrations were all less than the most restrictive guideline for this compound of 50 ppb. The concentrations of many of the target VOCs were low. Thirty-one of the VOCs had median concentrations that were at or below 1 ppb. Seven of the compounds were among the most abundant VOCs in all four houses. These compounds were alpha-pinene, beta-pinene, 3-carene, ethylene glycol, hexanal, 2-butanone, and acetic acid. The concentrations of the aldehydes, hexanal, octanal and nonanal, in the four houses were either near or exceeded their respective odor thresholds. The concentrations of acetic acid increased with time. In the final sampling period, the odor threshold for acetic acid was exceeded in all of the houses. The range of TVOC concentrations in the four houses was 0.8 to 3 mg m{sup -3}, with a median value of 1.6 mg m{sup -3}. These concentrations were somewhat lower than TVOC concentrations previously measured in several new site-built houses, and the median concentration was only about twice the typical value for existing residences. The house with the modified ventilation system and several lower emitting materials had consistently low TVOC concentrations that were near 1 mg m{sup -3}. There were no large decreases with time in the emission rates of the individual VOCs or TVOC during the course of the study. However, the emission rates were often lowest in the final sampling with the notable exception of the acetic acid emission rate that increased with time. The source of the aldehydes was most likely engineered wood products, such as the plywood floor sheeting and possibly other structural or interior components. The source of the acetic acid was uncertain. The effects of the source substitution treatments were measurable but turned out to be relatively minor due to the predominance of other sources.

Hodgson, A.T.; Beal, D.; Chandra, S.

1998-09-01T23:59:59.000Z

72

(Carbon monoxide metabolism by photosynthetic bacteria)  

SciTech Connect (OSTI)

Research continued on the metabolism of carbon monoxide by Rhodospirillum rubrum. This report discusses progress on the activity, induction, inhibition, and spectroscopic analysis of the enzyme Carbon Monoxide Dehydrogenase. (CBS)

Not Available

1989-01-01T23:59:59.000Z

73

Method of removing nitrogen monoxide from a nitrogen monoxide-containing gas using a water-soluble iron ion-dithiocarbamate, xanthate or thioxanthate  

DOE Patents [OSTI]

The present invention relates to a method of removing of nitrogen monoxide from a nitrogen monoxide-containing gas which method comprises contacting a nitrogen oxide-containing gas with an aqueous solution of water soluble organic compound-iron ion chelate complex. The NO absorption efficiency of ferrous urea-dithiocarbamate and ferrous diethanolamine-xanthate as a function of time, oxygen content and solution ph is presented. 3 figs., 1 tab.

Liu, D. Kwok-Keung; Chang, Shih-Ger

1987-08-25T23:59:59.000Z

74

Refined conceptual model for the Volatile Organic Compounds-Arid Integrated Demonstration and 200 West Area Carbon Tetrachloride Expedited Response Action  

SciTech Connect (OSTI)

This report presents a refined geohydrologic and geochemical conceptual model of the host site (Hanford Reservation) for the Volatile Organic Compounds -- Arid Integrated Demonstration (VOC-Arid ID) and 200 West Area Carbon Tetrachloride (CCl{sub 4}) Expedited Response Action (ERA), based on the results from fiscal year 1992 site characterization activities. The ERA was initiated in December 1990 to minimize or stabilize CCl{sub 4} migration within the unsaturated (vadose) zone in the vicinity of three CCl{sub 4} disposal sites in the 200 West Area (216-Z-1A tile field, 216-Z-9 trench, and 216-Z-18 crib). Implementation of this ERA was based on concerns that CCl{sub 4} residing in the soils was continuing to spread to the groundwater and, if left unchecked, would significantly increase the area of groundwater contamination. A soil-vapor-extraction system began operating at the site in February 1992.

Last, G.V. [Pacific Northwest Lab., Richland, WA (United States); Rohay, V.J. [Westinghouse Hanford Co., Richland, WA (United States)

1993-03-01T23:59:59.000Z

75

MEMBRANE INTRODUCTION MASS SPECTROMETRY FOR THE ON-LINE ANALYSIS OF VOLATILE ORGANIC COMPOUNDS IN AQUEOUS SOLUTIONS  

E-Print Network [OSTI]

organic compounds (VOCs) have been detected in urban waters across the United States, including gasoline was partially supported by the NSF-Chemistry CARREER award # CHE-0.34131. #12;v VITA November 4, 1974.S. Pharmaceutical Chemistry, National School of Biological Sciences (Mexico). 2002 ­ 2005

76

Regeneration of carboxylic acid-laden basic sorbents by leaching with a volatile base in an organic solvent  

DOE Patents [OSTI]

Carboxylic acids are sorbed from aqueous feedstocks onto a solid adsorbent. The acids are freed from the sorbent phase by treating it with an organic solution of alkylamine thus forming an alkylamine/carboxylic acid complex which is decomposed with improved efficiency to the desired carboxylic acid and the alkylamine. Carbon dioxide addition can be used to improve the adsorption or the carboxylic acids by the solid phase sorbent.

King, C. Judson (Kensington, CA); Husson, Scott M. (Berkeley, CA)

1999-01-01T23:59:59.000Z

77

Method of removing nitrogen monoxide from a nitrogen monoxide-containing gas using a water-soluble iron ion-dithiocarbamate, xanthate or thioxanthate  

DOE Patents [OSTI]

A method of removing nitrogen monoxide from a nitrogen monoxide-containing gas, which method comprises: (a) contacting a nitrogen oxide-containing gas with an aqueous solution of water soluble organic compound-iron ion chelate of the formula: ##STR1## wherein the water-soluble organic compound is selected from compounds of the formula: ##STR2## wherein: R is selected from hydrogen or an organic moiety having at least one polar functional group; Z is selected from oxygen, sulfur, or --N--A wherein N is nitrogen and A is hydrogen or lower alkyl having from one to four carbon atoms; and M is selected from hydrogen, sodium or potassium; and n is 1 or 2, in a contacting zone for a time and at a temperature effective to reduce the nitrogen monoxide. These mixtures are useful to provide an unexpensive method of removing NO from gases, thus reducing atmospheric pollution from flue gases.

Liu, David K. (San Pablo, CA); Chang, Shih-Ger (El Cerrito, CA)

1989-01-01T23:59:59.000Z

78

Current emission trends for nitrogen oxides, sulfur dioxide, and volatile organic compounds by month and state: Methodology and results  

SciTech Connect (OSTI)

This report presents estimates of monthly sulfur dioxide (SO{sub 2}), nitrogen oxides (NO{sub x}), and nonmethane voltatile organic compound (VOC) emissions by sector, region, and state in the contiguous United States for the years 1975 through 1988. This work has been funded as part of the National Acid Precipitation Assessment Program`s Emissions and Controls Task Group by the US Department of Energy (DOE) Office of Fossil Energy (FE). The DOE project officer is Edward C. Trexler, DOE/FE Office of Planning and Environment.

Kohout, E.J.; Miller, D.J.; Nieves, L.A.; Rothman, D.S.; Saricks, C.L.; Stodolsky, F.; Hanson, D.A.

1990-08-01T23:59:59.000Z

79

Current emission trends for nitrogen oxides, sulfur dioxide, and volatile organic compounds by month and state: Methodology and results  

SciTech Connect (OSTI)

This report presents estimates of monthly sulfur dioxide (SO{sub 2}), nitrogen oxides (NO{sub x}), and nonmethane voltatile organic compound (VOC) emissions by sector, region, and state in the contiguous United States for the years 1975 through 1988. This work has been funded as part of the National Acid Precipitation Assessment Program's Emissions and Controls Task Group by the US Department of Energy (DOE) Office of Fossil Energy (FE). The DOE project officer is Edward C. Trexler, DOE/FE Office of Planning and Environment.

Kohout, E.J.; Miller, D.J.; Nieves, L.A.; Rothman, D.S.; Saricks, C.L.; Stodolsky, F.; Hanson, D.A.

1990-08-01T23:59:59.000Z

80

Advanced Diesel Combustion with Low Hydrocarbon and Carbon Monoxide...  

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

Combustion with Low Hydrocarbon and Carbon Monoxide Emissions Advanced Diesel Combustion with Low Hydrocarbon and Carbon Monoxide Emissions Poster presented at the 16th Directions...

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Measurements of volatile organic compounds at a suburban ground site (T1) in Mexico City during the MILAGRO 2006 campaign: Measurement comparison, emission ratios, and source attribution  

SciTech Connect (OSTI)

Volatile organic compound (VOC) mixing ratios were measured with two different instruments at the T1 ground site in Mexico City during the Megacity Initiative: Local and Global Research Observations (MILAGRO) campaign in March of 2006. A gas chromatograph with flame ionization detector (GC-FID) quantified 18 light alkanes, alkenes and acetylene while a proton-transfer-reaction ion-trap mass spectrometer (PIT-MS) quantified 12 VOC species including oxygenated VOCs (OVOCs) and aromatics. A GC separation system was used in conjunction with the PIT-MS (GC-PIT-MS) to evaluate PIT-MS measurements and to aid in the identification of unknown VOCs. The VOC measurements are also compared to simultaneous canister samples and to two independent proton-transfer-reaction mass spectrometers (PTR-MS) deployed on a mobile and an airborne platform during MILAGRO. VOC diurnal cycles demonstrate the large influence of vehicle traffic and liquid propane gas (LPG) emissions during the night and photochemical processing during the afternoon. Emission ratios for VOCs and OVOCs relative to CO are derived from early-morning measurements. Average emission ratios for non-oxygenated species relative to CO are on average a factor of {approx}2 higher than measured for US cities. Emission ratios for OVOCs are estimated and compared to literature values the northeastern US and to tunnel studies in California. Positive matrix factorization analysis (PMF) is used to provide insight into VOC sources and processing. Three PMF factors were distinguished by the analysis including the emissions from vehicles, the use of liquid propane gas and the production of secondary VOCs + long-lived species. Emission ratios to CO calculated from the results of PMF analysis are compared to emission ratios calculated directly from measurements. The total PIT-MS signal is summed to estimate the fraction of identified versus unidentified VOC species.

Bon, D.M.; Springston, S.; M.Ulbrich, I.; de Gouw, J. A.; Warneke, C.; Kuster, W. C.; Alexander, M. L.; Baker, A.; Beyersdorf, A. J.; Blake, D.; Fall, R.; Jimenez, J. L., Herndon, S. C.; Huey, L. G.; Knighton, W. B.; Ortega, J.; Vargas, O.

2011-03-16T23:59:59.000Z

82

Volatile Organic Emissions from Carpets  

E-Print Network [OSTI]

irritation by airborne allyl acetate, allyl alcohol, andcompounds. For example, allyl acetate (2-propenyl acetate),acetate, was found to be highly irritating as were other allyl

Hodgson, A.T.

2008-01-01T23:59:59.000Z

83

ARM - Measurement - Volatile organic compounds  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUC : XDCResearch Relatedcontentcharacteristics ARMgovMeasurementsVisibility

84

Desorption of carbon monoxide from nickel using mercaptans  

SciTech Connect (OSTI)

An IR spectroscopic study on the displacement of carbon monoxide with 1-propyl, 2-propyl-, 1-butyl-, 2-butyl-, and tert.-butyl mercaptan from nickel foil and silica-supported nickel showed that at low carbon monoxide coverage on supported nickel, mercaptan adsorption initially converted bridged to linear carbon monoxide surface species. At higher mercaptan pressures, carbon monoxide desorbed into the gas phase. A small amount of carbon monoxide remained on the surface when the poisoned sample was evacuated, and additional carbon monoxide adsorbed when 5 mm Hg of carbon monoxide was added to the evacuated sample.

Neff, L.D.; Sturdivant, A.E.; Wallace, J.L.

1980-06-01T23:59:59.000Z

85

Carbon Monoxide Poisoning Avoided Through Weatherization | Department...  

Broader source: Energy.gov (indexed) [DOE]

systems in recipients' homes. "We had a chain -- one right after another," says Debbie Biggs, weatherization director for C-SCDC. "One had carbon monoxide levels so high we told...

86

A Pilot Study of the Effectiveness of Indoor Plants for Removal of Volatile Organic Compounds in Indoor Air in a Seven-Story Office Building  

SciTech Connect (OSTI)

The Paharpur Business Centre and Software Technology Incubator Park (PBC) is a 7 story, 50,400 ft{sup 2} office building located near Nehru Place in New Delhi India. The occupancy of the building at full normal operations is about 500 people. The building management philosophy embodies innovation in energy efficiency while providing full service and a comfortable, safe, healthy environment to the occupants. Provision of excellent Indoor Air Quality (IAQ) is an expressed goal of the facility, and the management has gone to great lengths to achieve it. This is particularly challenging in New Delhi, where ambient urban pollution levels rank among the worst on the planet. The approach to provide good IAQ in the building includes a range of technical elements: air washing and filtration of ventilation intake air from rooftop air handler, the use of an enclosed rooftop greenhouse with a high density of potted plants as a bio-filtration system, dedicated secondary HVAC/air handling units on each floor with re-circulating high efficiency filtration and UVC treatment of the heat exchanger coils, additional potted plants for bio-filtration on each floor, and a final exhaust via the restrooms located at each floor. The conditioned building exhaust air is passed through an energy recovery wheel and chemisorbent cartridge, transferring some heat to the incoming air to increase the HVAC energy efficiency. The management uses 'green' cleaning products exclusively in the building. Flooring is a combination of stone, tile and 'zero VOC' carpeting. Wood trim and finish appears to be primarily of solid sawn materials, with very little evidence of composite wood products. Furniture is likewise in large proportion constructed from solid wood materials. The overall impression is that of a very clean and well-kept facility. Surfaces are polished to a high sheen, probably with wax products. There was an odor of urinal cake in the restrooms. Smoking is not allowed in the building. The plants used in the rooftop greenhouse and on the floors were made up of a number of species selected for the following functions: daytime metabolic carbon dioxide (CO{sub 2}) absorption, nighttime metabolic CO{sub 2} absorption, and volatile organic compound (VOC) and inorganic gas absorption/removal for air cleaning. The building contains a reported 910 indoor plants. Daytime metabolic species reported by the PBC include Areca Palm, Oxycardium, Rubber Plant, and Ficus alii totaling 188 plants (21%). The single nighttime metabolic species is the Sansevieria with a total of 28 plants (3%). The 'air cleaning' plant species reported by the PBC include the Money Plant, Aglaonema, Dracaena Warneckii, Bamboo Palm, and Raphis Palm with a total of 694 plants (76%). The plants in the greenhouse (Areca Palm, Rubber Plant, Ficus alii, Bamboo Palm, and Raphis Palm) numbering 161 (18%) of those in the building are grown hydroponically, with the room air blown by fan across the plant root zones. The plants on the building floors are grown in pots and are located on floors 1-6. We conducted a one-day monitoring session in the PBC on January 1, 2010. The date of the study was based on availability of the measurement equipment that the researchers had shipped from Lawrence Berkeley National Lab in the U.S.A. The study date was not optimal because a large proportion of the regular building occupants were not present being New Year's Day. An estimated 40 people were present in the building all day during January 1. This being said, the building systems were in normal operations, including the air handlers and other HVAC components. The study was focused primarily on measurements in the Greenhouse and 3rd and 5th floor environments as well as rooftop outdoors. Measurements included a set of volatile organic compounds (VOCs) and aldehydes, with a more limited set of observations of indoor and outdoor particulate and carbon dioxide concentrations. Continuous measurements of Temperature (T) and relative humidity (RH) were made selected indoor and outdoor locations.

Apte, Michael G.; Apte, Joshua S.

2010-04-27T23:59:59.000Z

87

[Carbon monoxide metabolism by photosynthetic bacteria]. Progress report  

SciTech Connect (OSTI)

Research continued on the metabolism of carbon monoxide by Rhodospirillum rubrum. This report discusses progress on the activity, induction, inhibition, and spectroscopic analysis of the enzyme Carbon Monoxide Dehydrogenase. (CBS)

Not Available

1989-12-31T23:59:59.000Z

88

Population based exposure assessment methodology for carbon monoxide: Development of a Carbon Monoxide Passive Sampler and Occupational Dosimeter  

E-Print Network [OSTI]

Monoxide in Seatde Ice Skating Rinks." American Journal ofHockey Players in Ice Skating Rinks." Veterinary and Human

Apte, Michael G.

2010-01-01T23:59:59.000Z

89

Volatility and commodity price dynamics  

E-Print Network [OSTI]

Commodity prices tend to be volatile, and volatility itself varies over time. changes in volatility can affect market variables by directly affecting the marginal value of storage, and by affecting a component of the total ...

Pindyck, Robert S.

2001-01-01T23:59:59.000Z

90

Evaluation of the volatility basis-set approach for the simulation of organic aerosol formation in the Mexico City metropolitan area  

E-Print Network [OSTI]

New primary and secondary organic aerosol modules have been added to PMCAMx, a three dimensional chemical transport model (CTM), for use with the SAPRC99 chemistry mechanism based on recent smog chamber studies. The new ...

Tsimpidi, A. P.

91

Isotopic equilibration of carbon monoxide catalyzed by supported ruthenium  

SciTech Connect (OSTI)

Isotopic equilibration of carbon monoxide catalyzed by supported ruthenium was studied with oxygen-18 and carbon-13 labeled carbon monoxide in the presence and absence of hydrogen. The results showed that carbon monoxide was present on commercial alumina-supported ruthenium in a reactive undissociated form at 373/sup 0/K; that it adsorbed as a single carbonyl and in a geminal dicarbonyl form; and that hydrogen inhibited the exchange reaction by competitive adsorption and by stabilizing the carbonyl bond. The results elucidate the carbon monoxide methanation and Fischer-Tropsch reactions on this catalyst.

Bossi, A. (Cent. Ric. Novara); Zanderighi, L.; Carnisio, G.; Garbassi, F.; Giunchi, G.; Petrini, G.

1980-09-01T23:59:59.000Z

92

Advanced Diesel Combustion with Low Hydrocarbon and Carbon Monoxide...  

Broader source: Energy.gov (indexed) [DOE]

Combustion with Low Hydrocarbon and Carbon Monoxide Emissions Poster Location P-19 Gregory K. Lilik, Andr L. Boehman Department of Energy & Mineral Engineering EMS Energy...

93

Analysis of C1, C2, and C10 through C33 particle-phase and semi-volatile organic compound emissions from heavy-duty diesel engines  

E-Print Network [OSTI]

from heavy-duty diesel engines Z. Gerald Liu a,*, Devin R. Berg a , Victoria N. Vasys a , Melissa E 18 November 2009 Keywords: Organic compound emissions Particulate matter emissions Heavy-duty diesel engines Aftertreatment technology Diesel particulate filter Chemical speciation a b s t r a c t To meet

Wu, Mingshen

94

APPLICATION OF STIR BAR SORPTIVE EXTRACTION TO ANALYSIS OF VOLATILE AND SEMIVOLATILE ORGANIC CHEMICALS OF POTENTIAL CONCERN IN SOLIDS AND AQUEOUS SAMPLES FROM THE HANFORD SITE  

SciTech Connect (OSTI)

Stir bar sorptive extraction was applied to aqueous and solid samples for the extraction and analysis of organic compounds from the Hanford chemicals of potential concern list, as identified in the vapor data quality objectives. The 222-S Laboratory analyzed these compounds from vapor samples on thermal desorption tubes as part of the Hanford Site industrial hygiene vapor sampling effort.

FRYE JM; KUNKEL JM

2009-03-05T23:59:59.000Z

95

E-Print Network 3.0 - ambient carbon monoxide Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

FACT SHEET Carbon monoxide (CO), known as the Invisible Killer... , propane, oil, wood, coal, and gasoline. Exposure to carbon monoxide can cause flu-like symptoms and can... .)...

96

Process for producing carbon monoxide and hydrogen from methanol  

SciTech Connect (OSTI)

A process is described for producing carbon monoxide and hydrogen which comprises contacting methanol vapor at a temperature of 200 degrees to 300 degrees C with an indirectly heated zinc containing catalyst to obtain an effluent gas in which the components of carbon monoxide and hydrogen constitute at least 90% by volume of said gas. At least a part of the impurities from said effluent gas are removed and said effluent gas is deparated into its carbon monoxide and hydrogen components by adsorption. The effluent gas can be separated into its carbon monoxide and hydrogen components by use of a plurality of adsorbers containing zeolite-type molecular sieve material where the zeolite is substantially permeable to hydrogen but sorbs carbon monoxide.

Jockel, H.; Marschner, F.; Moller, F.W.; Mortel, H.

1982-02-23T23:59:59.000Z

97

Carbon monoxide exposure of subjects with documented cardiac arrhythmias  

SciTech Connect (OSTI)

The impact of low-level carbon monoxide exposure on ventricular arrhythmia frequency in patients with ischemic heart disease has not been thoroughly studied. The issue is of concern because of the potential proarrhythmic effect of carbon monoxide in patients with ischemic heart disease. We studied 30 subjects with well-documented coronary artery disease who had an average of at least 30 ventricular ectopic beats per hour over a 20-hour monitoring interval. By using appropriate inclusion and exclusion criteria, subjects were selected and enrolled in a randomized double-blind study to determine the effects of carbon monoxide exposure on ventricular arrhythmia frequency at rest, during exercise, and during ambulatory activities. The carbon monoxide exposure was designed to result in 3% or 5% carboxyhemoglobin levels, as measured by gas chromatography. The carbon monoxide exposure protocol produced target levels in 60 minutes, and the levels were maintained for an additional 90 minutes to provide adequate time to assess the impact of carbon monoxide on the frequency of ventricular ectopic beats. The data on total and repetitive ventricular arrhythmias were analyzed for seven specific time intervals: (1) two hours before carbon monoxide exposure; (2) during the two-hour carbon monoxide or air exposure; (3) during a two-hour rest period; (4) during an exercise period; (5) during an exercise recovery period; (6) six hours after carbon monoxide or air exposure; and (7) approximately 10 hours after exposure, or the remaining recording interval on the Holter monitor. There was no increase in ventricular arrhythmia frequency after carbon monoxide exposure, regardless of the level of carboxyhemoglobin or the type of activity.

Chaitman, B.R.; Dahms, T.E.; Byers, S.; Carroll, L.W.; Younis, L.T.; Wiens, R.D. (St. Louis Univ. School of Medicine, MO (United States))

1992-09-01T23:59:59.000Z

98

Carbon monoxide sensor for PEM fuel cell systems Christopher T. Holta,*  

E-Print Network [OSTI]

reforming) or with air and water (autothermal reforming). In the second step, carbon monoxide is reduced

Azad, Abdul-Majeed

99

Carbon monoxide sensor and method of use thereof  

DOE Patents [OSTI]

Carbon monoxide sensors suitable for use in hydrogen feed streams and methods of use thereof are disclosed. The sensors are palladium metal/insulator/semiconductor (Pd-MIS) sensors which may possess a gate metal layer having uniform, Type 1, or non-uniform, Type 2, film morphology. Type 1 sensors display an increased sensor response in the presence of carbon monoxide while Type 2 sensors display a decreased response to carbon monoxide. The methods and sensors disclosed herein are particularly suitable for use in proton exchange membrane fuel cells (PEMFCs).

McDaniel; Anthony H. (Livermore, CA), Medlin; J. Will (Boulder, CO), Bastasz; Robert J. (Livermore, CA)

2007-09-04T23:59:59.000Z

100

Double Diffusion in Enclosure Bounded by Massive and Volatilizing Walls  

E-Print Network [OSTI]

ICEBO2006, Shenzhen, China Maximize Comfort: Temperature, Humidity and IAQ Vol.I-6-5 Double Diffusion in Enclosure Bounded by Massive and Volatilizing Walls Di Liu Guangfa Tang Fuyun Zhao Doctoral Professor.... INTRODUCTION It has become evident that building products are major contributors to the pollution of the indoor air environment with volatile organic compounds (VOCs) [1]. The indoor airflow and temperature distributions also have influence on the emission...

Liu, D.; Tang, G.; Zhao, F.

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Volatile Organic Compound Detection Using Nanostructured Copolymers  

E-Print Network [OSTI]

a lot of success in sensor development for greenhouse gases (CO2, CH4, N2O, NO, and CO), technology sensing mechanisms are at play simultaneously, and we briefly discuss some of them. The demand for low-cost, PennsylVania 15213, and National Personal ProtectiVe Technology Laboratory, National Institute

Weiss, Lee E.

102

Determination of the atherogenic potential of inhaled carbon monoxide  

SciTech Connect (OSTI)

he effects of chronic exposure to moderate levels of carbon monoxide upon the augmentation of arteriosclerotic plaque development were investigated in a series of in vivo studies in the cockerel (young rooster). This animal model has been well characterized, especially regarding the role of environmental agents in exacerbating early stages of plaque development. Cockerels injected with subtumorigenic doses of carcinogens exhibit markedly accelerated development of aortic arteriosclerotic plaques. Inhalation of mainstream smoke from two packs of cigarettes (100 minutes/day for 16 weeks) causes small but statistically significant increases in plaque size. As is the case with many animal models of plaque development, raised fat-proliferative plaques also appear in these animals following cholesterol feeding. Carbon monoxide is a ubiquitous pollutant in urban environments, where it is derived largely from mobile sources and cigarette smoke. Exposure to chronically elevated carbon monoxide levels has been implicated in a number of health-related problems. Whether such exposure plays a role in the development of arteriosclerosis has not been determined conclusively. In the present study, three questions were posed: 1. Will inhaled carbon monoxide at levels of 50 to 200 parts per million (ppm)* (two hours/day for 16 weeks) be sufficient to augment arteriosclerotic plaque development in cockerels, in the absence of other plaque-promoting agents 2. Will the inhalation of 100 ppm carbon monoxide (two hours/day for 16 weeks), concomitant with the feeding of low levels (0.1%) of cholesterol, yield larger plaques than those obtained with either of these agents administered alone 3. Will inhalation of 100 ppm carbon monoxide (two hours/day for 11 or 22 weeks), by cockerels in whom plaques have already appeared, further augment plaque development Cockerels were exposed to carefully regulated levels of carbon monoxide in stainless-steel and Plexiglas dynamic exposure chambers.

Penn, A. (New York Univ. Medical Center, NY (United States))

1993-05-01T23:59:59.000Z

103

Organization  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Regionat CornellInternships,(SC) Laboratories »OrganicOrganization

104

A population-based exposure assessment methodology for carbon monoxide: Development of a carbon monoxide passive sampler and occupational dosimeter  

SciTech Connect (OSTI)

Two devices, an occupational carbon monoxide (CO) dosimeter (LOCD), and an indoor air quality (IAQ) passive sampler were developed for use in population-based CO exposure assessment studies. CO exposure is a serious public health problem in the U.S., causing both morbidity and mortality (lifetime mortality risk approximately 10{sup -4}). Sparse data from population-based CO exposure assessments indicate that approximately 10% of the U.S. population is exposed to CO above the national ambient air quality standard. No CO exposure measurement technology is presently available for affordable population-based CO exposure assessment studies. The LOCD and IAQ Passive Sampler were tested in the laboratory and field. The palladium-molybdenum based CO sensor was designed into a compact diffusion tube sampler that can be worn. Time-weighted-average (TWA) CO exposure of the device is quantified by a simple spectrophotometric measurement. The LOCD and IAQ Passive Sampler were tested over an exposure range of 40 to 700 ppm-hours and 200 to 4200 ppm-hours, respectively. Both devices were capable of measuring precisely (relative standard deviation <20%), with low bias (<10%). The LOCD was screened for interferences by temperature, humidity, and organic and inorganic gases. Temperature effects were small in the range of 10{degrees}C to 30{degrees}C. Humidity effects were low between 20% and 90% RH. Ethylene (200 ppm) caused a positive interference and nitric oxide (50 ppm) caused a negative response without the presence of CO but not with CO.

Apte, M.G.

1997-09-01T23:59:59.000Z

105

Kinetic model of catalytic oxidation of carbon monoxide on nickel  

SciTech Connect (OSTI)

A mechanism is proposed for describing the previous disclosed multiplicity of equilibrium states in the oxidation of carbon monoxide on metallic nickel. In contrast to the known mechanism for oxidation of CO on platinum metals it includes a nonlinear stage of carbon monoxide adsorption and a linear stage of oxygen adsorption. A kinetic model has been obtained and stage velocity constants have been found, providing a basis for obtaining a quantitative agreement between the calculated and experimental relations between the reaction velocity and the reagent concentrations. Opinions are stated in relation to the causes for evolution of the CO oxidation reaction from platinum metals to nickel.

Pyatnitskii, Yu.I.; Ostapyuk, V.A.

1986-07-01T23:59:59.000Z

106

Photobiogeochemical cycling of carbon monoxide in the southeastern Beaufort Sea in spring and autumn  

E-Print Network [OSTI]

Photobiogeochemical cycling of carbon monoxide in the southeastern Beaufort Sea in spring the distribution, photoproduction, microbial uptake, and air­sea exchange of carbon monoxide (CO), a key that in warmer seas. Carbon monoxide (CO) is the dominant sink for hydroxyl radicals in the troposphere, thus

Vincent, Warwick F.

107

Mechanistical studies on the formation of carbon dioxide in extraterrestrial carbon monoxide ice analog samples  

E-Print Network [OSTI]

be produced via radiolysis of carbon monoxide ices.5 Indeed, the effects of ionizing radiation on pure carbonMechanistical studies on the formation of carbon dioxide in extraterrestrial carbon monoxide ice901220f Binary ice mixtures of two carbon monoxide isotopomers, 13 C16 O and 12 C18 O, were subjected

Kaiser, Ralf I.

108

Titanium dioxide based high temperature carbon monoxide selective sensor  

E-Print Network [OSTI]

Titanium dioxide based high temperature carbon monoxide selective sensor Nancy O. Savagea , Sheikh as a trap for the oxidation products of CO and CH4. Upon oxidation of CO on ALC, carbonate species were detected, whereas the reaction of CH4 produced negligible carbonate species. The insensitivity of the ALC

Dutta, Prabir K.

109

Infrared spectra of carbon monoxide adsorbed on palladium black  

SciTech Connect (OSTI)

The authors investigate the heterogeneous adsorption of carbon monoxide and the concurrent catalytic and sorptive properties of palladium black from the standpoint of a comprehensive analysis of the infrared spectra of the reaction pathways and their various products as well as the pressure dependence of the line behavior at various wavelengths.

Vozdvizhenskii, V.F.; Levintova, T.D.; Sokol'skii, D.V.

1986-06-01T23:59:59.000Z

110

Disproportionation of carbon monoxide on supported nickel catalysts  

SciTech Connect (OSTI)

The disproportionation of carbon monoxide was investigated mainly on a 5.5% Ni/Al/sub 2/O/sub 3/ catalyst by infrared spectroscopy and temperature-programmed desorption. The reaction was found to be of first order with respect to the surface concentration of CO below 200/sup 0/C, while at 450/sup 0/C the reaction proceeded as a second order reaction for the pressure of CO. Results obtained with predeposited carbon indicated that the disproportionation reaction requires an ensemble of several nickel atoms. In agreement with this result, the disproportionation did not take place readily on a 1.1% Ni/Al/sub 2/O/sub 3/ catalyst on which a high dispersion of the metal was indicated by both infrared spectroscopy and the chemisorption of hydrogen. In the temperature-programmed desorption (TPD) carbon monoxide desorbed in a single peak before 300/sup 0/C. Some of the carbon monoxide, however, underwent disproportionation during TPD and a carbon dioxide peak appeared at about 220/sup 0/C. Furthermore, carbon thus deposited on the surface was oxidized to carbon monoxide by oxygen supplied from the catalysts and gave a second peak of CO in TPD at temperatures higher than 300/sup 0/C. Possible sources of the oxygen were discussed.

Galuszka, J.; Chang, J.R.; Amenomiya, Y.

1981-03-01T23:59:59.000Z

111

Detection of iodine monoxide in the tropical free troposphere  

E-Print Network [OSTI]

19, 2012) Atmospheric iodine monoxide (IO) is a radical that catalytically destroys heat trapping in the remote tropical marine boundary layer (MBL) (2­4). IO further affects the oxidative capacity iodine species over the remote ocean remain poorly understood (11, 14) but are currently thought

112

Quantitative analysis of SCIAMACHY carbon monoxide total column measurements  

E-Print Network [OSTI]

, SCIAMACHY CO total column retrievals are of sufficient quality to provide useful new information]. Ground-based FTIR measurements provide high quality total column measurements but have very limitedQuantitative analysis of SCIAMACHY carbon monoxide total column measurements A. T. J. de Laat,1,2 A

Laat, Jos de

113

Quantitative organic vapor-particle sampler  

DOE Patents [OSTI]

A quantitative organic vapor-particle sampler for sampling semi-volatile organic gases and particulate components. A semi-volatile organic reversible gas sorbent macroreticular resin agglomerates of randomly packed microspheres with the continuous porous structure of particles ranging in size between 0.05-10 .mu.m for use in an integrated diffusion vapor-particle sampler.

Gundel, Lara (Berkeley, CA); Daisey, Joan M. (Walnut Creek, CA); Stevens, Robert K. (Cary, NC)

1998-01-01T23:59:59.000Z

114

Catalytic activation of carbon monoxide on metal surfaces  

SciTech Connect (OSTI)

In discussing the important basic aspects of carbon monoxide chemistry, this review covers the adsorption and reaction of CO with H/sub 2/O and H/sub 2/ on reduced metal surfaces. Carbon monoxide adsorption of the Group VIII metals exhibits certain patterns. Typically, as coverages exceed one-half, compression occurs in the monolayer and the molecules lose registry with the surface metal atoms. Particular sites associated with rough surfaces facilitate CO dissociation to the surface carbon; these sites may have a significant effect on selectivity in the CO hydrogenation reaction. The support used and the metal crystallite size both affect the catalyst activity and product selectivity. Indications are strong that a better knowledge of metal-support interactions combined with a more complete understanding of the surface chemistry involved will lead to improved catalyst systems in the future.

Vannice, M.A.

1982-01-01T23:59:59.000Z

115

Catalyst for the methanation of carbon monoxide in sour gas  

DOE Patents [OSTI]

The invention involves the synergistic effect of the specific catalytic constituents on a specific series of carriers for the methanation of carbon monoxide in the presence of sulfur at relatively high temperatures and at low steam to gas ratios in the range of 0.2:1 or less. This effect was obtained with catalysts comprising the mixed sulfides and oxides of nickel and chromium supported on carriers comprising magnesium aluminate and magnesium silicate. Conversion of carbon monoxide to methane was in the range of from 40 to 80%. Tests of this combination of metal oxides and sulfides on other carriers and tests of other metal oxides and sulfides on the same carrier produced a much lower level of conversion.

Kustes, William A. (Louisville, KY); Hausberger, Arthur L. (Louisville, KY)

1985-01-01T23:59:59.000Z

116

Composite catalyst for carbon monoxide and hydrocarbon oxidation  

DOE Patents [OSTI]

A method and composition for the complete oxidation of carbon monoxide and/or hydrocarbon compounds. The method involves reacting the carbon monoxide and/or hydrocarbons with an oxidizing agent in the presence of a metal oxide composite catalyst. The catalyst is prepared by combining fluorite-type oxygen ion conductors with active transition metals. The fluorite oxide, selected from the group consisting of cerium oxide, zirconium oxide, thorium oxide, hafnium oxide, and uranium oxide, and may be doped by alkaline earth and rare earth oxides. The transition metals, selected from the group consisting of molybdnum, copper, cobalt, maganese, nickel, and silver, are used as additives. The atomic ratio of transition metal to fluorite oxide is less than one.

Liu, Wei (Cambridge, MA); Flytzani-Stephanopoulos, Maria (Winchester, MA)

1996-01-01T23:59:59.000Z

117

Composite catalyst for carbon monoxide and hydrocarbon oxidation  

DOE Patents [OSTI]

A method and composition are disclosed for the complete oxidation of carbon monoxide and/or hydrocarbon compounds. The method involves reacting the carbon monoxide and/or hydrocarbons with an oxidizing agent in the presence of a metal oxide composite catalyst. The catalyst is prepared by combining fluorite-type oxygen ion conductors with active transition metals. The fluorite oxide, selected from the group consisting of cerium oxide, zirconium oxide, thorium oxide, hafnium oxide, and uranium oxide, and may be doped by alkaline earth and rare earth oxides. The transition metals, selected from the group consisting of molybdenum, copper, cobalt, manganese, nickel, and silver, are used as additives. The atomic ratio of transition metal to fluorite oxide is less than one.

Liu, W.; Flytzani-Stephanopoulos, M.

1996-03-19T23:59:59.000Z

118

Solid fuel volatilization to produce synthesis gas  

DOE Patents [OSTI]

A method comprising contacting a carbon and hydrogen-containing solid fuel and a metal-based catalyst in the presence of oxygen to produce hydrogen gas and carbon monoxide gas, wherein the contacting occurs at a temperature sufficiently high to prevent char formation in an amount capable of stopping production of the hydrogen gas and the carbon monoxide gas is provided. In one embodiment, the metal-based catalyst comprises a rhodium-cerium catalyst. Embodiments further include a system for producing syngas. The systems and methods described herein provide shorter residence time and high selectivity for hydrogen and carbon monoxide.

Schmidt, Lanny D.; Dauenhauer, Paul J.; Degenstein, Nick J.; Dreyer, Brandon J.; Colby, Joshua L.

2014-07-29T23:59:59.000Z

119

Carbon and carbon monoxide hydrogenation on nickel: support effects  

SciTech Connect (OSTI)

Hydrogenation of carbon, deposited on nickel catalysts by CO disproportionation, was investigated by temperature-programmed surface reaction (TPSR) for four oxide supports, alumina (Al/sub 2/O/sub 3/), silica (SiO/sub 2/), titanium oxide (TiO/sub 2/), and SiO/sub 2/.Al/sub 2/O/sub 3/. The rate of carbon monoxide hydrogenation was measured by temperature-programmed reaction (TPR) for comparison. The rate of carbon hydrogenation to methane was found to be independent of the support and an average activation energy of 42 kJ/mol was estimated. In contrast, the rate of carbon monoxide hydrogenation was very sensitive to the catalyst support. Nickel (Ni) supported on TiO/sub 2/ exhibited the highest specific activity, and two distinct sites for methanation were observed on Ni/TiO/sub 2/ and Ni/Al/sub 2/O/sub 3/. The lowest specific activities were observed for Ni/SiO/sub 2/ and Ni/SiO/sub 2/.Al/sub 2/O/sub 3/. For all catalysts, carbon hydrogenation occurred at a lower temperature than carbon monoxide hydrogenation. For both TPR and TPSR, small amounts of ethane were formed and at a lower temperature than methane. The amount of less-active, ..beta..-carbon observed in TPSR experiments was very small on all catalysts. These results indicate that at high coverages, carbon hydrogenation does not depend on the support, and thus it is not rate-determining for CO hydrogenation in excess hydrogen. The support is also shown to change the specific rate of carbon monoxide methanation; activity differences seen in steady-state experiments are not just due to differences in site densities. 5 figures, 5 tables.

Ozdogan, S.Z.; Gochis, P.D.; Falconer, J.L.

1983-10-01T23:59:59.000Z

120

In Search of a Statistically Valid Volatility Risk Factor  

E-Print Network [OSTI]

The cross- section of volatility and expected returns, Theof a Statistically Valid Volatility Risk Factor (revised)of a Statistically Valid Volatility Risk Factor Robert M.

Anderson, Robert M.; Bianchi, Stephen W.; Goldberg, Lisa R.

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

TEXIN2: a model for predicting carbon monoxide concentrations near intersections  

E-Print Network [OSTI]

reduction caused by congestion 49 10 Application of impedance factors Carbon monoxide emissions for vehicular speed changes 59 12 Pasquill stability classes, A-G, as related to wind speed and incoming solar radiation 77 13 Regression lines... The prediction of carbon monoxide concentrations near roadway intersections represents a serious and challenging problem in air pollution research. In many geographical regions, the major portion of carbon monoxide in the environment is attributable...

Korpics, J. J

1985-01-01T23:59:59.000Z

122

INFRARED ABSORPTION SPECTROSCOPY OF CARBON MONOXIDE ON NICKEL FILMS: A LOW TEMPERATURE THERMAL DETECTION TECHNIQUE  

E-Print Network [OSTI]

A. B. Optical System Absorption Signal C. Small SignalNoise . Sensitivity of Absorption Spectroscopy EXPERIMENTSINFRARED ABSORPTION SPECTROSCOPY OF CARBON MONOXIDE ON

Bailey, Robert Brian

2011-01-01T23:59:59.000Z

123

E-Print Network 3.0 - atmospheric carbon monoxide Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

reservoirs (storages, especially the atmosphere, terrestrial biosphere, oceans... emissions trading and the control of greenhouse gas emissions. Carbon monoxide a chemical...

124

E-Print Network 3.0 - acute carbon monoxide Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

28, 2007 Summary: OSHAReproToxin AcutelyHazardousWaste Carbon monoxide CalOSHAReproToxin Carbon Tetrachloride IARC-2BNTP Carbonic... toxins, biotoxins and acutely toxic...

125

Volatility in natural gas and oil markets  

E-Print Network [OSTI]

Using daily futures price data, I examine the behavior of natural gas and crude oil price volatility since 1990. I test whether there has been a significant trend in volatility, whether there was a short-term increase in ...

Pindyck, Robert S.

2003-01-01T23:59:59.000Z

126

Perturbation Expansion for Option Pricing with Stochastic Volatility  

E-Print Network [OSTI]

We fit the volatility fluctuations of the S&P 500 index well by a Chi distribution, and the distribution of log-returns by a corresponding superposition of Gaussian distributions. The Fourier transform of this is, remarkably, of the Tsallis type. An option pricing formula is derived from the same superposition of Black-Scholes expressions. An explicit analytic formula is deduced from a perturbation expansion around a Black-Scholes formula with the mean volatility. The expansion has two parts. The first takes into account the non-Gaussian character of the stock-fluctuations and is organized by powers of the excess kurtosis, the second is contract based, and is organized by the moments of moneyness of the option. With this expansion we show that for the Dow Jones Euro Stoxx 50 option data, a Delta-hedging strategy is close to being optimal.

Petr Jizba; Hagen Kleinert; Patrick Haener

2007-08-22T23:59:59.000Z

127

Transient PrOx carbon monoxide measurement, control, and optimization  

SciTech Connect (OSTI)

Fuel processing systems for low temperature polymer electrolyte membrane (PEM) fuel cell systems require control of the carbon monoxide concentration to less than 100 ppm to 10 ppm in the anode feed. Conventional hydrocarbon fuel processors use a water-gas shift (WGS) reactor to react CO with water to form H2 and reduce the CO concentration. The CO conversion is limited by equilibrium at the outlet temperature of the WGS reactor. The WGS outlet CO concentration can range from over 1% to 2000 ppm depending on the system and its operating parameters. At these concentrations, CO poisons low temperature PEM fuel cells and the concentrations needs to be reduced further.

Inbody, M. A. (Michael A.); Borup, R. L. (Rodney L.); Tafoya, J. (Jose I.)

2002-01-01T23:59:59.000Z

128

Summary Report for the Development of Materials for Volatile Radionuclides  

SciTech Connect (OSTI)

The materials development summarized here is in support of the Waste Forms campaign, Volatile Radionuclide task. Specifically, materials are being developed for the removal and immobilization of iodine and krypton, specifically 129I and 85Kr. During FY 2010, aerogel materials were investigated for removal and immobilization of 129I. Two aerogel formulations were investigated, one based on silica aerogels and the second on chalcogenides. For 85Kr, metal organic framework (MOF) structures were investigated.

Strachan, Denis M.; Chun, Jaehun; Henager, Charles H.; Matyas, Josef; Riley, Brian J.; Ryan, Joseph V.; Thallapally, Praveen K.

2010-11-22T23:59:59.000Z

129

Removal of carbon monoxide. Physical adsorption on natural and synthetic zeolites  

SciTech Connect (OSTI)

The utilization of natural zeolite materials in the elimination of polluting gases is investigated. Carbon monoxide pollution is emphasized because its concentration may reach dangerous levels in places such as vehicle tunnels, underground parking lots, etc. The elimination of carbon monoxide is also of interest in some industrial processes relating to the production of pure gases.

Alfani, F.; Greco, G. Jr.; Iroio, G.

1982-07-01T23:59:59.000Z

130

Submitted to the Annals of Applied Statistics INTERPOLATING FIELDS OF CARBON MONOXIDE  

E-Print Network [OSTI]

and transport. CO AMS 2000 subject classifications: Carbon monoxide; satellite data; Bayesian hierarchi- cal models; interpolation; data assimilation 1 imsart-aoas ver. 2007/04/13 file: COpaper.tex date: March 24Submitted to the Annals of Applied Statistics INTERPOLATING FIELDS OF CARBON MONOXIDE DATA USING

Nychka, Douglas

131

An experimental investigation of the ignition properties of hydrogen and carbon monoxide  

E-Print Network [OSTI]

for syngas turbine applications S.M. Walton *, X. He, B.T. Zigler, M.S. Wooldridge Department of Mechanical of simulated syngas mixtures of hydrogen (H2), carbon monoxide (CO), oxygen (O2), nitrogen (N2), and carbon. Keywords: Carbon monoxide; Hydrogen; Syngas; Ignition; Rapid compression facility 1. Introduction Syngas

Wooldridge, Margaret S.

132

Carbon monoxide-assisted growth of carbon nanotubes Y.H. Tang a,b  

E-Print Network [OSTI]

Carbon monoxide-assisted growth of carbon nanotubes Y.H. Tang a,b , Y.F. Zheng a , C.S. Lee a , N was used to synthesize carbon nanotubes (CNTs) in a hot-®lament chemical vapor deposition (HFCVD) system in the formation of multi-walled carbon nanotubes (MWNT)s. The CNTs synthesized from carbon monoxide validate

Zheng, Yufeng

133

Understanding complex Earth systems: volatile metabolites as microbial ecosystem proxies and student conceptual model development of coastal eutrophication  

E-Print Network [OSTI]

research strands which contribute to the scientific and pedagogical understanding of complex Earth systems. In the first strand, a method that characterizes volatile organic compounds (VOCs) as ecological proxies of soil microbial ecosystems was validated...

McNeal, Karen Sue

2009-05-15T23:59:59.000Z

134

Moment Methods for Exotic Volatility Derivatives  

E-Print Network [OSTI]

The latest generation of volatility derivatives goes beyond variance and volatility swaps and probes our ability to price realized variance and sojourn times along bridges for the underlying stock price process. In this paper, we give an operator algebraic treatment of this problem based on Dyson expansions and moment methods and discuss applications to exotic volatility derivatives. The methods are quite flexible and allow for a specification of the underlying process which is semi-parametric or even non-parametric, including state-dependent local volatility, jumps, stochastic volatility and regime switching. We find that volatility derivatives are particularly well suited to be treated with moment methods, whereby one extrapolates the distribution of the relevant path functionals on the basis of a few moments. We consider a number of exotics such as variance knockouts, conditional corridor variance swaps, gamma swaps and variance swaptions and give valuation formulas in detail.

Albanese, Claudio

2007-01-01T23:59:59.000Z

135

Interaction of carbon monoxide with supported platinum catalysts  

SciTech Connect (OSTI)

The interaction of carbon monoxide with Pt/..gamma..-Al/sub 2/O/sub 3/ containing 0.5-5% Pt by weight has been investigated by means of thermal desorption and IR spectroscopy. It has been shown that CO is adsorbed in three different forms, corresponding to the desorption temperature intervals 25-250/sup 0/C (I), and 250-700/sup 0/C (II), and 550-850/sup 0/C (III). In the adsorption of CO in the first two forms, the metal takes part (absorption band at 2080 cm/sup -1/), and also the support (1800, 1260, 1390, 1470, 1550, and 1640 cm/sup -1/). The adsorption in form III probably takes place on oxidized platinum centers with the formation of strong surface carbonate structures. High temperatures tend to increase the adsorption of CO in forms II and III.

Savel'eva, G.A.; Galeev, T.K.; Popova, N.M.; Vozdvizhenskii, V.F.; Mishchenko, V.M.

1982-04-01T23:59:59.000Z

136

Methanation of gas streams containing carbon monoxide and hydrogen  

DOE Patents [OSTI]

Carbon monoxide-containing gas streams having a relatively high concentration of hydrogen are pretreated so as to remove the hydrogen in a recoverable form for use in the second step of a cyclic, essentially two-step process for the production of methane. The thus-treated streams are then passed over a catalyst to deposit a surface layer of active surface carbon thereon essentially without the formation of inactive coke. This active carbon is reacted with said hydrogen removed from the feed gas stream to form methane. The utilization of the CO in the feed gas stream is appreciably increased, enhancing the overall process for the production of relatively pure, low-cost methane from CO-containing waste gas streams.

Frost, Albert C. (Congers, NY)

1983-01-01T23:59:59.000Z

137

Some observations on the kinetics of the hydrogenation of carbon monoxide  

SciTech Connect (OSTI)

For the hydrogenation of CO a positive order of hydrogen and a slightly negative or a zero order in carbon monoxide are generally reported. The negative (or zero) order in carbon monoxide is often explained by assuming a strong adsorption of carbon monoxide on the same sites as used by the hydrogen. It is then assumed that the surface is ''almost totally'' covered by carbon monoxide. From experiments in which the surface products on an unsupported cobalt catalyst after the reaction were stripped off by a hydrogen treatment it was concluded that more than 95% of the surface (as determined from the adsorption of carbon monoxide at room temperature) was covered by carbon-containing species. This paper illustrates that ''zero order in carbon monoxide'' can be obtained with much lower coverage of carbon-containing species in equilibrium with gas-phase carbon monoxide than indicated above. Equations for reaction rates are presented, and data is calculated on the fraction of the catalyst surface covered by active carbon-containing species when the reaction is zero order in CO. The results suggest that only a small fraction of the catalyst surface is actively engaged in the hydrogenation of CO. This further suggests that the low turnover frequencies found for the Fischer-Tropsch synthesis could be caused by a small number of sites which are active in the rate-determining step. (MWF)

Rautavuoma, A.O.I.; van der Baan, H.S.

1981-10-01T23:59:59.000Z

138

Development and Characterization of a Thermodenuder for Aerosol Volatility Measurements  

SciTech Connect (OSTI)

This SBIR Phase I project addressed the critical need for improved characterization of carbonaceous aerosol species in the atmosphere. The proposed work focused on the development of a thermodenuder (TD) system capable of systematically measuring volatility profiles of primary and secondary organic aerosol species and providing insight into the effects of absorbing and nonabsorbing organic coatings on particle absorption properties. This work provided the fundamental framework for the generation of essential information needed for improved predictions of ambient aerosol loadings and radiative properties by atmospheric chemistry models. As part of this work, Aerodyne Research, Inc. (ARI) continued to develop and test, with the final objective of commercialization, an improved thermodenuder system that can be used in series with any aerosol instrument or suite of instruments (e.g., aerosol mass spectrometers-AMS, scanning mobility particle sizers-SMPS, photoacoustic absorption spectrometers-PAS, etc.) to obtain aerosol chemical, physical, and optical properties as a function of particle volatility. In particular, we provided the proof of concept for the direct coupling of our improved TD design with a full microphysical model to obtain volatility profiles for different organic aerosol components and to allow for meaningful comparisons between different TD-derived aerosol measurements. In a TD, particles are passed through a heated zone and a denuding (activated charcoal) zone to remove semi-volatile material. Changes in particle size, number concentration, optical absorption, and chemical composition are subsequently detected with aerosol instrumentation. The aerosol volatility profiles provided by the TD will strengthen organic aerosol emission inventories, provide further insight into secondary aerosol formation mechanisms, and provide an important measure of particle absorption (including brown carbon contributions and identification, and absorption enhancements due to coatings on soot particles). The successfully completed Phase I project included construction of a prototype design for the TD with detailed physical modeling, testing with laboratory and ambient aerosol particles, and the initiation of a detailed microphysical model of the aerosol particles passing through the TD to extract vapor pressure distributions. The objective of the microphysical model is to derive vapor pressure distributions (i.e. vapor pressure ranges, including single chemical compounds, mixtures of known compounds, and complex ‘real-world’ aerosols, such as SOA, and soot particles with absorbing and nonabsorbing coatings) from TD measurements of changes in particle size, mass, and chemical composition for known TD temperatures and flow rates (i.e. residence times). The proposed Phase II project was designed to optimize several TD systems for different instrument applications and to combine the hardware and modeling into a robust package for commercial sales.

Dr. Timothy Onasch

2009-09-09T23:59:59.000Z

139

Production of carbon monoxide-free hydrogen and helium from a high-purity source  

DOE Patents [OSTI]

The invention provides vacuum swing adsorption processes that produce an essentially carbon monoxide-free hydrogen or helium gas stream from, respectively, a high-purity (e.g., pipeline grade) hydrogen or helium gas stream using one or two adsorber beds. By using physical adsorbents with high heats of nitrogen adsorption, intermediate heats of carbon monoxide adsorption, and low heats of hydrogen and helium adsorption, and by using vacuum purging and high feed stream pressures (e.g., pressures of as high as around 1,000 bar), pipeline grade hydrogen or helium can purified to produce essentially carbon monoxide -free hydrogen and helium, or carbon monoxide, nitrogen, and methane-free hydrogen and helium.

Golden, Timothy Christopher (Allentown, PA); Farris, Thomas Stephen (Bethlehem, PA)

2008-11-18T23:59:59.000Z

140

A Micro-Computer-Based Fuel Optimization System Utilizing In-Situ Measurement of Carbon Monoxide  

E-Print Network [OSTI]

gas analyzer that mounts directly in the flue or stack to continuously measure carbon monoxide, unburned hydrocarbons, opacity and temperature. The control console interfaces directly with the boiler's existing analog control system to provide precise...

DeVivo, D. G.

1980-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Current status of fluoride volatility method development  

SciTech Connect (OSTI)

The Fluoride Volatility Method is based on a separation process, which comes out from the specific property of uranium, neptunium and plutonium to form volatile hexafluorides whereas most of fission products (mainly lanthanides) and higher transplutonium elements (americium, curium) present in irradiated fuel form nonvolatile tri-fluorides. Fluoride Volatility Method itself is based on direct fluorination of the spent fuel, but before the fluorination step, the removal of cladding material and subsequent transformation of the fuel into a powdered form with a suitable grain size have to be done. The fluorination is made with fluorine gas in a flame fluorination reactor, where the volatile fluorides (mostly UF{sub 6}) are separated from the non-volatile ones (trivalent minor actinides and majority of fission products). The subsequent operations necessary for partitioning of volatile fluorides are the condensation and evaporation of volatile fluorides, the thermal decomposition of PuF{sub 6} and the finally distillation and sorption used for the purification of uranium product. The Fluoride Volatility Method is considered to be a promising advanced pyrochemical reprocessing technology, which can mainly be used for the reprocessing of oxide spent fuels coming from future GEN IV fast reactors.

Uhlir, J.; Marecek, M.; Skarohlid, J. [UJV - Nuclear Research Institute, Research Centre Rez, CZ-250 68 Husinec - Rez 130 (Czech Republic)

2013-07-01T23:59:59.000Z

142

Influence of the electrode material on carbon monoxide adsorption and electroreduction in aqueous solutions  

SciTech Connect (OSTI)

Carbon monoxide electroreduction was studied at rotating disk electrodes made of different materials (Cu, Au, Zn, Cd; amalgamated Cu; Al, Ga, In, glassy carbon, Sn, Pb, Mo, Fe, Ni, and certain binary systems). Positive partial currents which are evidence for a direct electroreduction of CO have been observed only at Zn, Ga, and Cd. The observation that CO is less susceptible to electroreduction than carbon dioxide is explained by the stronger chemisorption of carbon monoxide on the electrodes.

Osetrova, N.V.; Vasil'ev, Yu.B.

1987-12-01T23:59:59.000Z

143

Volatile constituents in a wood pyrolysis oil  

E-Print Network [OSTI]

Science VOLATILE CONSTITUTENTS IN A WOOD PYROLYSIS OIL A Thesis SHIH-CHIEN LIN Appro d as to style and content by: (Chairman of Committee) Head of epa tmen (Member Member Nay 1978 442936 ABSTRACT Volatile Constituents in a Wood Pyrolysis Oil.../120 Supelcoport. Other trace constituents of volatile acid were also 'dentifi="' by trap- ping the substances from the C. C. column into i: n;- 0-sh ped capillary tube and subjecting to mass spectrometry. The corrosivity of pyrolysis oil and it, volati'e acids...

Lin, Shih-Chien

1978-01-01T23:59:59.000Z

144

Securing non-volatile memory regions  

DOE Patents [OSTI]

Methods, apparatus and articles of manufacture to secure non-volatile memory regions are disclosed. An example method disclosed herein comprises associating a first key pair and a second key pair different than the first key pair with a process, using the first key pair to secure a first region of a non-volatile memory for the process, and using the second key pair to secure a second region of the non-volatile memory for the same process, the second region being different than the first region.

Faraboschi, Paolo; Ranganathan, Parthasarathy; Muralimanohar, Naveen

2013-08-20T23:59:59.000Z

145

Titanium monoxide spectroscopy following laser-induced optical breakdown  

SciTech Connect (OSTI)

This work investigates Titanium Monoxide (TiO) in ablation-plasma by employing laser-induced breakdown spectroscopy (LIBS) with 1 to 10 TW/cm{sup 2} irradiance, pulsed, 13 nanosecond, Q-switched Nd:YAG laser radiation at the fundamental wavelength of 1064 nm. The analysis of TiO is based on our first accurate determination of transition line strengths for selected TiO A-X, B-X, and E-X transitions, particularly TiO A-X {gamma} and B-X {gamma} Prime bands. Electric dipole line strengths for the A{sup 3}{Phi}-X{sup 3}{delta} and B{sup 3}{Pi}-X{sup 3}{delta} bands of TiO are computed. The molecular TiO spectra are observed subsequent to laser-induced breakdown (LIB). We discuss analysis of diatomic molecular spectra that may occur simultaneously with spectra originating from atomic species. Gated detection is applied to investigate the development in time of the emission spectra following LIB. Collected emission spectra allow one to infer micro-plasma parameters such as temperature and electron density. Insight into the state of the micro-plasma is gained by comparing measurements with predictions of atomic and molecular spectra. Nonlinear fitting of recorded and computed diatomic spectra provides the basis for molecular diagnostics, while atomic species may overlap and are simultaneously identified. Molecular diagnostic approaches similar to TiO have been performed for diatomic molecules such as AlO, C{sub 2}, CN, CH, N{sub 2}, NH, NO and OH.

Parigger, Christian G.; Woods, Alexander C.; Keszler, Anna; Nemes, Laszlo; Hornkohl, James O. [The University of Tennessee/UT Space Institute, Center for Laser Applications, 411 B.H. Goethert Parkway, Tullahoma, TN 37388-9700 (United States); Chemical Research Center of the Hungarian Academy of Sciences, Institute of Materials and Environmental Chemistry, Pusztaszeri ut 59-67, H-1025 Budapest (Hungary); Chemical Research Center of the Hungarian Academy of Sciences, Laser Spectroscopy Laboratory, Pusztaszeri ut 59-67, H-1025 Budapest (Hungary); Hornkohl Consulting, Tullahoma, TN 37388 (United States)

2012-07-30T23:59:59.000Z

146

On the pricing and hedging of volatility derivatives  

E-Print Network [OSTI]

On the pricing and hedging of volatility derivatives SAM HOWISON Mathematical Institute, University a stochastic volatility model as our starting point; we also provide formulae for the case that the volatility follows a jump- diffusion process of the type described in [18]. The fact that stochastic volatility

Howison, Sam

147

Reactive flash volatilization of fluid fuels  

DOE Patents [OSTI]

The invention provides methods for the production of synthesis gas. More particularly, various embodiments of the invention relate to systems and methods for volatilizing fluid fuel to produce synthesis gas by using a metal catalyst on a solid support matrix.

Schmidt, Lanny D.; Dauenhauer, Paul J.; Dreyer, Bradon J.; Salge, James R.

2013-01-08T23:59:59.000Z

148

Pressure maintenance in a volatile oil reservoir  

E-Print Network [OSTI]

PRESSURE MAINTENANCE IN A VOLATILE OIL RESERVOIR A Thesis BRUCE ALAN SCHUSTER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May, 1989 Major... Subject: Petroleum Engineering PRESSURE MAINTENANCE IN A VOLATILE OIL RESERVOIR A Thesis BRUCE ALAN SCHUSTER Approved as to style and content by: S. A. Holditch (Chair of Committee) W. J. Lee (Member) R. R, Berg (Member) , Jz W. D. Von Gonten...

Schuster, Bruce Alan

1989-01-01T23:59:59.000Z

149

1. PRECONCENTRATION, THERMAL DESORPTION & ANALYSIS OF VOLATILE ORGANIC COMPOUNDS  

E-Print Network [OSTI]

: peltier, liq. N?.. Heated transfer line 2) Desorption & transfer by fastheatlng Cooled & heated trap jas trap. The trap is then quickly heated, under a low flow of hélium, to desorb and inject thé compounds. This highly concentrated plug of sample is transferred via a heated transfer line, to a capillary

Boyer, Edmond

150

Glossary of Volatile Organic Compounds Ethylbenzene Carbon tetrachloride  

E-Print Network [OSTI]

;Ethylbenzene Ethylbenzene is a colorless, flammable liquid found in natural products such as coal tar and petroleum. It is also found in manufactured products such as inks, insecticides, and paints. Ethylbenzene in the air. In surface water, ethylbenzene breaks down by reacting with other chemicals found naturally

151

Volatile organic chemical emissions from carpets. Final report  

SciTech Connect (OSTI)

The primary objective of this research, was to measure the emission rates of selected individual VOC, including low molecular-weight aldehydes, released by samples of four new carpets that are typical of the major types of carpets used in residences, schools and offices. The carpet samples were collected directly from the manufacturers` mills and packaged to preserve their chemical integrity. The measurements of the concentrations and emission rates of these compounds were made under simulated indoor conditions in a 20-M{sup 3} environmental chamber designed specifically for investigations of VOC. The measurements were conducted over a period of one week following the installation of the carpet samples in the chamber. Duplicate experiments were conducted for one carpet. In addition, the concentrations and emission rates of VOC resulting from the installation of a new carpet in a residence were measured over a period of seven weeks. The stabilities of the week-long ventilation rates and temperatures were one percent relative standard deviation. The four carpets emitted a variety of VOC, 40 of which were positively identified. Eight of these were considered to be dominant. They were (in order of chromatographic retention time) formaldehyde, vinyl acetate, 2,2,4-trimethylpentane (isooctane), 1,2-propanediol (propylene glycol), styrene, 2-ethyl-l-hexanol, 4-phenylcyclohexene (4-PCH), and 2,6 di-tert-butyl-4-methylphenol (BHT). With the exception of formaldehyde, only limited data are available on the toxicity and irritancy of these compounds at low concentrations. Therefore, it is difficult to determine at this time the potential magnitude of the health and comfort effects that may occur among the population from exposures to emissions from new carpets. The concentrations and emission rates of most compounds decreased rapidly over the first 12 h of the experiments.

Hodgson, A.T.; Wooley, J.D.; Daisey, J.M.

1992-04-01T23:59:59.000Z

152

Volatile organic compounds in some urban locations in United States  

E-Print Network [OSTI]

. Air samples were collected and analyzed in accordance with US Environmental Protection Agency, an increased awareness of air pollutants and new potential sources of airborne toxic chemicals have raised to the immune and nervous systems, and other fatal diseases (Singh et al., 1982; Kao, 1994). Recently, a number

Aneja, Viney P.

153

Volatile Organic Compounds in Untreated Ambient Groundwater of  

E-Print Network [OSTI]

, 1608 Mt. View Road, Rapid City, South Dakota 57702 As part of the National Water-Quality Assessment from this ambient groundwater is uncertain because the quality of the finished drinking water with the largest releases to the environment are VOCs and that the total release for these 10 compounds was almost

154

Volatile Organic Compound Emissions from Dairy Cows and  

E-Print Network [OSTI]

, acetone + propanal, dimethylsulfide, and m/z 109 (likely 4-methyl-phenol). The compounds with highest. Agricultural pro- cesses, notably animal operations, are no longer exempt from emission controls as a result with a pro

Goldstein, Allen

155

Three-Dimensional Simulation of Volatile Organic Compound Mass...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

simulations using data from the U.S. Department of Energy’s Hanford Site, where carbon tetrachloride is present in a low permeability zone about 30 m above the...

156

2 Extracting and trapping biogenic 3 volatile organic compounds stored  

E-Print Network [OSTI]

, Subcritical water extraction; UAE, Ultrasound-assisted extraction 36 1. Introduction Plants release

Goldstein, Allen

157

NMED COMMENTS ITEM 3 REVISE VOLATILE ORGANIC COMPOUND (VOC) TARGET...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

generation and reduction of the Page 3 of 21 VOC borehole due to creep closure of the salt (DOE 1996a), which might result in VOC emissions from the canister into the room. The...

158

Detection of Low Volatility Organic Analytes on Soils Using Infrared  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed Newcatalyst phasesData FilesShape, Density, andagingaboutDrizzlethiol

159

Comparative Toxicity of Combined Particle and Semi-Volatile Organic  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTieCelebrate Earth Codestheat Two

160

Partitioning of Volatile Organics in Diesel Particulate and Exhaust |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L d F SSalesOE0000652 Srivastava,Pacific1ofDepartmentb.SensorDepartment

Note: This page contains sample records for the topic "monoxide volatile organic" 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.


161

Particulate Matter Sampling and Volatile Organic Compound Removal for  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006 TheSteven Ashby Dr.presentationsParticipantParticles

162

Energy Saving System to Remove Volatile Organic Compounds (VOCs) from  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing Zirconia Nanoparticles asSecondCareerFebruary 2005Energy Saver 101:SavingP R I

163

Coadsorption of hydrogen and ethylene, and carbon monoxide and ethylene on the Ru(001) surface  

SciTech Connect (OSTI)

A detailed investigation of the coadsorption of ethylene with both preadsorbed hydrogen and preadsorbed carbon monoxide on the Ru(001) surface is reported here. Both preadsorbed hydrogen and carbon monoxide reduce the saturation coverage of subsequently chemisorbed ethylene. The coadsorption of hydrogen with ethylene results in detectable hydrogenation of ethylene to ethane below 250 K, whereas no self-hydrogenation of ethylene to ethane is observed. High-resolution electron energy loss spectra show that ethylene coadsorbed with either hydrogen or carbon monoxide decomposes to ethylidyne (CCH/sub 3/) and acetylide (CCH), as it does on the clean surface. Carbon monoxide preadsorption enhances the stability of the ethylidyne such that it decomposes at approximately 420 K, rather than 355 K as on the initially clean Ru(001) surface. Preadsorbed carbon monoxide also reduces the ratio of ethylidyne to acetylide that is formed from ethylene, compared to the ratio observed from an equivalent coverage of ethylene on the clean surface; hydrogen preadsorption, on the other hand, increases this ratio.

Hills, M.M.; Parmeter, J.E.; Weinberg, W.H.

1986-11-12T23:59:59.000Z

164

Metal volatilization and separation during incineration  

SciTech Connect (OSTI)

The US Environmental Protection Agency (US EPA) has reported that metals can account for almost all of the identified risks from a thermal treatment process. Fundamental research leading to better understanding of their behavior and improved control of their emissions is greatly needed. This paper reports studies on metal volatilization and separation during incineration. Metal volatilization studies were carried out in two separate experiments. In the first experiment, the dynamic volatilization characteristics of various metals during the combustion of metal-containing wood pellets were investigated in a high-temperature electric furnace. In addition to uncontrolled volatilization, the potential of employing chemical additives to bind metals and prevent them from volatilizing during combustion was also investigated. The second experiment involved the investigation of metal volatilization characteristics during the thermal treatment of metal-contaminated clay in a fluidized bed unit. The metal species tested in both experiments were compounds of lead and cadmium. Metal capture/separation studies were also carried out in two separate experiments. The first involved the use of sorbents in the combustion chamber to capture metals during the fluidized bed incineration of metal-containing wood pellets. The second experiments, however, employed sorbents to absorb metal vapors in a fluidized-bed waste-heat boiler. The objective of both the experiments is to characterize the metal absorption efficiency associated with the processes.

Ho, T.C.; Chu, H.W.; Hopper, J.R. (Lamar Univ., Beaumont, TX (United States). Dept. of Chemical Engineering)

1993-01-01T23:59:59.000Z

165

Mechanism of methanol synthesis from carbon monoxide and hydrogen on copper catalysts  

SciTech Connect (OSTI)

The authors examine possible mechanisms of methanol synthesis from carbon monoxide and hydrogen on supported copper catalysts. Two broad categories of reaction mechanism can be identified: (a) Type I: Carbon monoxide, adsorbed on the copper surface, is hydrogenated by the addition of hydrogen atoms while the C-O bond remains intact. A second C-O bond is neither formed nor broken. (b) Type II: Carbon monoxide (or a partially hydrogenated intermediate, e.g., HCO) reacts with an oxygen atom on the catalyst surface to give an intermediate, typically a formate, which contains two C-O bonds. Subsequent reaction leads overall to methanol and the reformation of the surface oxygen atom. Both mechanisms are discussed.

Fakley, M.E.; Jennings, J.R.; Spencer, M.S. (ICI Chemicals and Polymers Ltd, Billingham, Cleveland (England))

1989-08-01T23:59:59.000Z

166

Reformer-pressure swing adsorption process for the production of carbon monoxide  

SciTech Connect (OSTI)

An improved process for the production of carbon monoxide by the steam reforming of hydrocarbons is described comprising: (a) catalytically reacting a fluid hydrocarbon feed stream with steam in a steam reformer; (b) passing the reformer effluent containing hydrogen, carbon monoxide and carbon dioxide from the steam reformer, without scrubbing to remove the carbon dioxide content thereof, to a pressure swing adsorption system having at least four adsorbent beds, each bed of which, on a cyclic basis, undergoes a processing sequence; (c) recycling the carbon dioxide-rich stream to the steam reformer for reaction with additional quantities of the hydrocarbon feed stream being passed to the stream reformer to form additional quantities of carbon monoxide and hydrogen, with product recovery being enhanced and the need for employing a carbon dioxide wash system being obviated.

Fuderer, A.

1988-02-23T23:59:59.000Z

167

Crystallographic Snapshots of Cyanide- and Water-Bound C-Clusters from Bifunctional Carbon Monoxide Dehydrogenase/Acetyl-CoA Synthase  

E-Print Network [OSTI]

Nickel-containing carbon monoxide dehydrogenases (CODHs) reversibly catalyze the oxidation of carbon monoxide to carbon dioxide and are of vital importance in the global carbon cycle. The unusual catalytic CODH C-cluster ...

Kung, Yan

168

Cyclic process for producing methane from carbon monoxide with heat removal  

DOE Patents [OSTI]

Carbon monoxide-containing gas streams are converted to methane by a cyclic, essentially two-step process in which said carbon monoxide is disproportionated to form carbon dioxide and active surface carbon deposited on the surface of a catalyst, and said carbon is reacted with steam to form product methane and by-product carbon dioxide. The exothermic heat of reaction generated in each step is effectively removed during each complete cycle so as to avoid a build up of heat from cycle-to-cycle, with particularly advantageous techniques being employed for fixed bed, tubular and fluidized bed reactor operations.

Frost, Albert C. (Congers, NY); Yang, Chang-lee (Spring Valley, NY)

1982-01-01T23:59:59.000Z

169

Volatile Species Retention During Metallic Fuel Casting  

SciTech Connect (OSTI)

Metallic nuclear fuels are candidate transmutation fuel forms for advanced fuel cycles. Through the operation of the Experimental Breeder Reactor II metallic nuclear fuels have been shown to be robust and easily manufactured. However, concerns have been raised concerning loss of americium during the casting process because of its high vapor pressure. In order to address these concerns a gaseous diffusion model was developed and a series of experiments using both manganese and samarium as surrogates for americium were conducted. The modeling results showed that volatility losses can be controlled to essentially no losses with a modest overpressure. Experimental results also showed volatile species retention down to no detectable losses through overpressure, although the loss values varied from the model results the same trend was seen. Bases on these results it is very probably that americium losses through volatility can be controlled to no detectable losses through application of a modest overpressure during casting.

Randall S. Fielding; Douglas L. Proter

2013-10-01T23:59:59.000Z

170

Non-volatile memory for checkpoint storage  

DOE Patents [OSTI]

A system, method and computer program product for supporting system initiated checkpoints in high performance parallel computing systems and storing of checkpoint data to a non-volatile memory storage device. The system and method generates selective control signals to perform checkpointing of system related data in presence of messaging activity associated with a user application running at the node. The checkpointing is initiated by the system such that checkpoint data of a plurality of network nodes may be obtained even in the presence of user applications running on highly parallel computers that include ongoing user messaging activity. In one embodiment, the non-volatile memory is a pluggable flash memory card.

Blumrich, Matthias A.; Chen, Dong; Cipolla, Thomas M.; Coteus, Paul W.; Gara, Alan; Heidelberger, Philip; Jeanson, Mark J.; Kopcsay, Gerard V.; Ohmacht, Martin; Takken, Todd E.

2014-07-22T23:59:59.000Z

171

Carbon monoxide annealed TiO2 nanotube array electrodes for efficient biosensor applications  

E-Print Network [OSTI]

Carbon monoxide annealed TiO2 nanotube array electrodes for efficient biosensor applications by anodic oxidation of titanium foil followed with O2 and CO annealing were employed as matrices consisted of Ti3+ defects with carbon-doping and exhibited well defined quasi-reversible cyclic voltammetric

Cao, Guozhong

172

Crystallization and mutational studies of carbon monoxide dehydrogenase from moorella thermoacetica  

E-Print Network [OSTI]

Carbon Monoxide Dehydrogenase (CODH), also known as Acetyl-CoA synthase (ACS), is one of seven known Ni containing enzymes. CODH/ACS is a bifunctional enzyme which oxidizes CO to CO2 reversibly and synthesizes acetyl-CoA. Recently, X-ray crystal...

Kim, Eun Jin

2004-09-30T23:59:59.000Z

173

Effect of redox potential, sulfide ions and a persulfide forming cysteine residue on carbon monoxide dehydrogenase  

E-Print Network [OSTI]

The Ni-Fe-S C-cluster of carbon monoxide dehydrogenases (CODH), which catalyzes the reversible oxidation of CO to CO2, can be stabilized in four redox states: Cox, Cred1, Cint, and Cred2. The best-supported mechanism of catalysis involves a one...

Feng, Jian

2005-08-29T23:59:59.000Z

174

Study of hydrogen and carbon monoxide adsorption on modified Zn/Cr catalysts by adsorption calorimetry  

SciTech Connect (OSTI)

Differential heat of adsorption (q) of hydrogen (a) and carbon monoxide (b) as a function of the adsorbed amount (a) on Zn/Cr catalysts at 463/sup 0/K; 1) unpromoted catalyst, 2) catalyst promoted with 2.5% of K/sub 2/O.

Yoshin, S.V.; Klyacho, A.L.; Kondrat'ev, L.T.; Leonov, V.E.; Skripchenko, G.B.; Sushchaya, L.E.

1986-08-01T23:59:59.000Z

175

Process for producing methane from gas streams containing carbon monoxide and hydrogen  

DOE Patents [OSTI]

Carbon monoxide-containing gas streams are passed over a catalyst capable of catalyzing the disproportionation of carbon monoxide so as to deposit a surface layer of active surface carbon on the catalyst essentially without formation of inactive coke thereon. The surface layer is contacted with steam and is thus converted to methane and CO.sub.2, from which a relatively pure methane product may be obtained. While carbon monoxide-containing gas streams having hydrogen or water present therein can be used only the carbon monoxide available after reaction with said hydrogen or water is decomposed to form said active surface carbon. Although hydrogen or water will be converted, partially or completely, to methane that can be utilized in a combustion zone to generate heat for steam production or other energy recovery purposes, said hydrogen is selectively removed from a CO--H.sub.2 -containing feed stream by partial oxidation thereof prior to disproportionation of the CO content of said stream.

Frost, Albert C. (Congers, NY)

1980-01-01T23:59:59.000Z

176

Attosecond Control of Electron Dynamics in Carbon Monoxide I. Znakovskaya,1  

E-Print Network [OSTI]

Attosecond Control of Electron Dynamics in Carbon Monoxide I. Znakovskaya,1 P. von den Hoff,2 S by manipulating the laser frequency, phase and polarization in closed loop experiments [1]. Control- faces in the observed control? We describe experiments, where control of electron dynamics in carbon

Kling, Matthias

177

Effects of exogenous carbon monoxide on radiation-induced bystander effect in zebrafish embryos in vivo  

E-Print Network [OSTI]

that the dose-response of radiation in the low-dose regime deviated from the LNT model. A notable example radiation are linearly proportional to the absorbed dose, evidence accumulated in the past decades showed as a pharmaceutical agent to release a low dose of exogenous carbon monoxide (CO) to attenuate the effect on bystander

Yu, K.N.

178

Observations of rotating jets of carbon monoxide in comet Hale-Bopp with the IRAM interferometer  

E-Print Network [OSTI]

Observations of rotating jets of carbon monoxide in comet Hale-Bopp with the IRAM interferometer the projection of the jet mean velocity on the line of sight. As the jet rotates with the nucleus, the velocity, an interesting feature is to be noted. We have computed the mean photometric centre from the peak intensity

Demoulin, Pascal

179

Forecasting Volatility in Stock Market Using GARCH Models  

E-Print Network [OSTI]

Forecasting volatility has held the attention of academics and practitioners all over the world. The objective for this master's thesis is to predict the volatility in stock market by using generalized autoregressive conditional heteroscedasticity(GARCH...

Yang, Xiaorong

2008-01-01T23:59:59.000Z

180

Cursed Resources? Political Conditions and Oil Market Volatility*  

E-Print Network [OSTI]

a country's political conditions affect oil production within its borders. We show production, with very democratic regimes exhibiting less volatility in their oil production than more of oil production volatility. Our finding has implications both for understanding world oil markets

Edwards, Paul N.

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Photoconversion of gasified organic materials into biologically-degradable plastics  

DOE Patents [OSTI]

A process is described for converting organic materials (such as biomass wastes) into a bioplastic suitable for use as a biodegradable plastic. In a preferred embodiment the process involves thermally gasifying the organic material into primarily carbon monoxide and hydrogen, followed by photosynthetic bacterial assimilation of the gases into cell material. The process is ideally suited for waste recycling and for production of useful biodegradable plastic polymer.

Weaver, Paul F. (Golden, CO); Maness, Pin-Ching (Golden, CO)

1993-01-01T23:59:59.000Z

182

Photoconversion of gasified organic materials into biologically-degradable plastics  

DOE Patents [OSTI]

A process is described for converting organic materials (such as biomass wastes) into a bioplastic suitable for use as a biodegradable plastic. In a preferred embodiment the process involves thermally gasifying the organic material into primarily carbon monoxide and hydrogen, followed by photosynthetic bacterial assimilation of the gases into cell material. The process is ideally suited for waste recycling and for production of useful biodegradable plastic polymer. 3 figures.

Weaver, P.F.; Pinching Maness.

1993-10-05T23:59:59.000Z

183

X-ray elemental online analyzer measures volatiles  

SciTech Connect (OSTI)

The use of an online XRF analyser for determining the volatiles content of coal is outlined. 3 figs.

Klein, A.; Pilz, K.; Reich, K. [Indutech Instruments GmbH, Simmersfeld (Germany)

2008-04-15T23:59:59.000Z

184

COMMODITY PRICE VOLATILITY ACROSS EXCHANGE RATE REGIMES  

E-Print Network [OSTI]

1 COMMODITY PRICE VOLATILITY ACROSS EXCHANGE RATE REGIMES John T. Cuddington* and Hong Liang** March 10, 2003 ABSTRACT This paper documents a new "stylized fact" regarding the relative price 1880 to 1996, this key relative price among two categories of tradable goods is shown to exhibit

185

Proboscis extension reflex platform for volatiles and semi-volatiles detection  

DOE Patents [OSTI]

The present invention provides an apparatus for the detection of volatile and semi-volatile chemicals using the olfactory abilities of honey bees that are trained to respond to the presence of a specific chemical in a sample of gas with the proboscis extension reflex (PER). In particular, the geometry and arrangement of the parts of the apparatus are such that the amount of surface area in contact with the sample of gas prior to its introduction to the bees is minimized to improve the detection of particular volatile and semi-volatile that have a tendency to "stick" to contacting surfaces, especially certain chemicals associated with explosives and narcotics. According to another aspect of the present invention, a pre-concentrating means is incorporated with the device to effectively increase the concentration of "sticky" chemicals presented to the insects.

Wingo, Robert M. (Los Alamos, NM); McCabe, Kirsten J. (Los Alamos, NM); Haarmann, Timothy K. (Jemez Pueblo, NM)

2010-11-30T23:59:59.000Z

186

Approximate hedging problem with transaction costs in stochastic volatility markets  

E-Print Network [OSTI]

Approximate hedging problem with transaction costs in stochastic volatility markets Thai Huu Nguyen stochastic volatility markets with transaction costs using a new form for enlarged volatility in Leland between the present setting and high frequency markets with transaction costs. Possibilities to improve

Paris-Sud XI, Université de

187

Volatility Persistence in Crude Oil Markets Amlie CHARLES  

E-Print Network [OSTI]

announcements on production reduction or US announcements on crude inventories. We find that the crude oilVolatility Persistence in Crude Oil Markets Amélie CHARLES Audencia Nantes, School of Management on the volatility modelling process improve the understanding of volatility in crude oil markets. Keywords: Crude

Boyer, Edmond

188

ABSORPTION DES ACIDES GRAS VOLATILS DANS L'OMASUM DE LA VACHE  

E-Print Network [OSTI]

ABSORPTION DES ACIDES GRAS VOLATILS DANS L'OMASUM DE LA VACHE C. DARDILLAT Station de rôle du feuillet et ses capacités d'absorption sont très mal connus car il est difficile d'accé- der à cet organe sans perturber son fonctionnement. Nous avons fixé par effet ventouse une chambre d'absorption

Boyer, Edmond

189

A Study of Vibrational Relaxation of B-State Carbon Monoxide in the Heme Pocket of Photolyzed Carboxymyoglobin  

E-Print Network [OSTI]

, Massachusetts 02215 ABSTRACT The vibrational energy relaxation of dissociated carbon monoxide in the heme pocket for the two CO substate frequencies, T1(B1) 335 115 ps and T1(B2) 330 145 ps. These simulation results

Straub, John E.

190

Top-down estimate of a large source of atmospheric carbon monoxide associated with fuel combustion in Asia  

E-Print Network [OSTI]

modeling methodology, we find that the source of carbon monoxide from fossil-fuel and biofuel combustion-fuel and- biofuel combustion sources in North America, Europe, Asia (including Indonesia and the Middle

Palmer, Paul

191

Impact of emissions, chemistry, and climate on atmospheric carbon monoxide : 100-year predictions from a global chemistry-climate model  

E-Print Network [OSTI]

The possible trends for atmospheric carbon monoxide in the next 100 yr have been illustrated using a coupled atmospheric chemistry and climate model driven by emissions predicted by a global economic development model. ...

Wang, Chien.; Prinn, Ronald G.

192

Final Technical Report "Catalytic Hydrogenation of Carbon Monoxide and Olefin Oxidation" Grant number : DE-FG02-86ER13615  

SciTech Connect (OSTI)

Title: Catalytic Hydrogenation of Carbon Monoxide and Olefin Oxidation Grant No. DE-FG02-86ER13615 PI: Wayland, B. B. (wayland@sas.upenn.edu) Abstract Development of new mechanistic strategies and catalyst materials for activation of CO, H2, CH4, C2H4, O2, and related substrates relevant to the conversion of carbon monoxide, alkanes, and alkenes to organic oxygenates are central objectives encompassed by this program. Design and synthesis of metal complexes that manifest reactivity patterns associated with potential pathways for the hydrogenation of carbon monoxide through metallo-formyl (M-CHO), dimetal ketone (M-C(O)-M), and dimetal dionyl (M-C(O)-C(O)-M) species is one major focus. Hydrocarbon oxidation using molecular oxygen is a central goal for methane activation and functionalization as well as regioselective oxidation of olefins. Discovery of new reactivity patterns and control of selectivity are pursued through designing new metal complexes and adjusting reaction conditions. Variation of reaction media promotes distinct reaction pathways that control both reaction rates and selectivities. Dimetalloradical diporphyrin complexes preorganize transition states for substrate reactions that involve two metal centers and manifest large rate increases over mono-metalloradical reactions of hydrogen, methane, and other small molecule substrates. Another broad goal and recurring theme of this program is to contribute to the thermodynamic database for a wide scope of organo-metal transformations in a range of reaction media. One of the most complete descriptions of equilibrium thermodynamics for organometallic reactions in water and methanol is emerging from the study of rhodium porphyrin substrate reactions in aqueous and alcoholic media. Water soluble group nine metalloporphyrins manifest remarkably versatile substrate reactivity in aqueous and alcoholic media which includes producing rhodium formyl (Rh-CHO) and hydroxy methyl (Rh-CH2OH) species. Exploratory directions for this program include expending new strategies for anti-Markovnikov addition of water, alcohols, and amines with olefins, developing catalytic reactions of CO to give formamides and formic esters, and evaluating the potential for coupling reactions of CO to produce organic building blocks.

Wayland, B.B.

2009-08-31T23:59:59.000Z

193

Sample and Implied Volatility in GARCH Models  

E-Print Network [OSTI]

Sample and Implied Volatility in GARCH Models Lajos Horva´th University of Utah Piotr Kokoszka Utah of various GARCH-type models is a function hðq� of the parameter vector q which is estimated by bq. For most distributions of the differences ^2 � hðq� and ^2 � hðbq� for broad classes of GARCH-type models. Even though

Kokoszka, Piotr

194

Vacancies in ordered and disordered titanium monoxide: Mechanism of B1 structure stabilization  

SciTech Connect (OSTI)

The electronic structure and stability of three phases of titanium monoxide TiO{sub y} with B1 type of the basic structure have been studied. Cubic phase without structural vacancies, TiO, and two phases with structural vacancies, monoclinic Ti{sub 5}O{sub 5} and cubic disordered TiO{sub 1.0}, was treated by means of first-principles calculations within the density functional theory with pseudo-potential approach based on the plane wave's basis. The ordered monoclinic phase Ti{sub 5}O{sub 5} was found to be the most stable and the cubic TiO without vacancies the less stable one. The role of structural vacancies in the titanium sublattice is to decrease the Fermi energy, the role of vacancies in the oxygen sublattice is to contribute to the appearance of Ti–Ti bonding interactions through these vacancies and to reinforce the Ti–Ti interactions close to them. Listed effects are significantly pronounced if the vacancies in the titanium and oxygen sublattices are associated in the so called “vacancy channels” which determine the formation of vacancy ordered structure of monoclinic Ti{sub 5}O{sub 5}-type. - Graphical abstract: Changes in total DOS of titanium monoxide when going from vacancy-free TiO to TiO with disordered structural vacancies and to TiO with ordered structural vacancies. Highlights: • Ordered monoclinic Ti{sub 5}O{sub 5} is the most stable phase of titanium monoxide. • Vacancy-free TiO is the less stable phase of the titanium monoxide. • Ordering of oxygen vacancies leads to the appearance of Ti–Ti bonding interactions. • Titanium vacancies contribute significantly to the decreasing of the Fermi energy.

Kostenko, M.G. [Institute of Solid State Chemistry, The Ural Branch of the Russian Academy of Sciences, Pervomayskaya 91, Ekaterinburg 620990 (Russian Federation); Lukoyanov, A.V. [Institute of Metal Physics, The Ural Branch of the Russian Academy of Sciences, S. Kovalevskoy 18, Ekaterinburg 620990 (Russian Federation); Ural Federal University named after First President of Russia B.N. Yeltsin, Mira 19, Ekaterinburg 620002 (Russian Federation); Zhukov, V.P. [Institute of Solid State Chemistry, The Ural Branch of the Russian Academy of Sciences, Pervomayskaya 91, Ekaterinburg 620990 (Russian Federation); Rempel, A.A., E-mail: rempel@ihim.uran.ru [Institute of Solid State Chemistry, The Ural Branch of the Russian Academy of Sciences, Pervomayskaya 91, Ekaterinburg 620990 (Russian Federation); Ural Federal University named after First President of Russia B.N. Yeltsin, Mira 19, Ekaterinburg 620002 (Russian Federation)

2013-08-15T23:59:59.000Z

195

EnviroDB: Applied Database Systems Design for the National Environmental Assessment Toolkit (NEAT)  

E-Print Network [OSTI]

(CO 2 ), carbon monoxide (CO), volatile organic compounds (VOC), particulates (PM), air velocity (AIR_VEL), light levels at 3 locations (LGH), and a photometric camera that analyzes brightness/contrast and glare. The sensor outputs are recorded...

Kim, S. H.; Srivastava, V.; Aziz, A.

2005-01-01T23:59:59.000Z

196

Catalytic reactions on well-characterized vanadium oxide catalysts. 1. Oxidation of carbon monoxide  

SciTech Connect (OSTI)

The oxidation of carbon monoxide over unsupported and supported vanadium oxide catalysts was investigated from the standpoint of structure sensitivity. The activity of unsupported V/sub 2/O/sub 5/ markedly decreased the turnover frequency, while the reduction-oxidation treatment of the fused catalyst increased it. The turnover frequency of V/sub 2/O/sub 5//TiO/sub 2/ with low V/sub 2/O/sub 5/ content was much smaller than that of the V/sub 2/O/sub 5//TiO/sub 2/ with high V/sub 2/O/sub 5/ content or the unsupported V/sub 2/O/sub 5/. Such a retarding effect of the TiO/sub 2/ support on the activity of the oxidation of carbon monoxide is in contrast to the known promoting effect of TiO/sub 2/ for the oxidations of various hydrocarbons. From these results coupled with the characterization of the catalysts, it was concluded that the oxidation of carbon monoxide on vanadium oxide catalysts is a structure-sensitive reaction and that the activity of surface defects such as steps, kinks, and vacancies is much higher than that of the surface V=O species in the smooth (010) face of V/sub 2/O/sub 5/. 39 references, 9 figures, 2 tables.

Mori, K.; Miyamoto, A.; Murakami, Y.

1984-06-21T23:59:59.000Z

197

Ammonia volatilization and nitrogen transformations in high pH soils used for beef manure disposal  

E-Print Network [OSTI]

. The total nitrogen losses in the limed treatments were believed to be caused by the high solubility of organic matter in high pH solutions followed by chemical volatilization of nitrogen as ammonia. Most of this ammonia was believed to have remained... as par t of the soil air and was lost when the soil samples were taken from the columns. Denitrification was believed to be responsible for losses in the unlimed treatments. Comparison of final organic and total inorganic nitrogen concen- trationss...

Peters, Robert Edgar

1972-01-01T23:59:59.000Z

198

GADOLINIUM SOLUBILITY AND VOLATILITY DURING DWPF PROCESSING  

SciTech Connect (OSTI)

Understanding of gadolinium behavior, as it relates to potential neutron poisoning applications at the DWPF, has increased over the past several years as process specific data have been generated. Of primary importance are phenomena related to gadolinium solubility and volatility, which introduce the potential for gadolinium to be separated from fissile materials during Chemical Process Cell (CPC) and Melter operations. Existing data indicate that gadolinium solubilities under moderately low pH conditions can vary over several orders of magnitude, depending on the quantities of other constituents that are present. With respect to sludge batching processes, the gadolinium solubility appears to be highly affected by iron. In cases where the mass ratio of Fe:Gd is 300 or more, the gadolinium solubility has been observed to be low, one milligram per liter or less. In contrast, when the ratio of Fe:Gd is 20 or less, the gadolinium solubility has been found to be relatively high, several thousands of milligrams per liter. For gadolinium to serve as an effective neutron poison in CPC operations, the solubility needs to be limited to approximately 100 mg/L. Unfortunately, the Fe:Gd ratio that corresponds to this solubility limit has not been identified. Existing data suggest gadolinium and plutonium are not volatile during melter operations. However, the data are subject to inherent uncertainties preventing definitive conclusions on this matter. In order to determine if gadolinium offers a practical means of poisoning waste in DWPF operations, generation of additional data is recommended. This includes: Gd solubility testing under conditions where the Fe:Gd ratio varies from 50 to 150; and Gd and Pu volatility studies tailored to quantifying high temperature partitioning. Additional tests focusing on crystal aging of Gd/Pu precipitates should be pursued if receipt of gadolinium-poisoned waste into the Tank Farm becomes routine.

Reboul, S

2008-01-30T23:59:59.000Z

199

Volatiles as a link between planetary interiors and the environment  

E-Print Network [OSTI]

Volatiles derived from planetary interiors influence magma evolution and environmental processes. Over appropriate timescales, Earth's mantle, crust, ocean, and atmosphere constitute coupled systems. The apparently synchronous ...

Black, Benjamin A. (Benjamin Alexander)

2013-01-01T23:59:59.000Z

200

Volatiles in hydrothermal fluids- A mass spectrometric study...  

Open Energy Info (EERE)

Volatiles in hydrothermal fluids- A mass spectrometric study of fluid inclusions from active geothermal systems Jump to: navigation, search OpenEI Reference LibraryAdd to library...

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


201

Volatility of Gasoline and Diesel Fuel Blends for Supercritical...  

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

Gasoline and Diesel Fuel Blends for Supercritical Fuel Injection Volatility of Gasoline and Diesel Fuel Blends for Supercritical Fuel Injection Supercritical dieseline could be...

202

Ammonia volatilization from N fertilizers surface applied on bermudagrass  

E-Print Network [OSTI]

. The biological activity was measured by trapping the CO in NaOH (0. 422 N). The NH3 which was volatilized from the urea was trapped in boric acid according to Bremner (1965). Volatilized NH and evolved CO were measured daily by titrating the boric acid and 13... was passed over the soil surface, then bubbled into boric acid to trap volatilized NH (Bremner, 1965). Humidified air was used to prevent rapid soil drying which would retard NH volatilization (Ernst and Massey, 1960). The apparatus is diagrammed in Fig. 1...

Panossian, Jack B.

1980-01-01T23:59:59.000Z

203

Supporting Information:1 Contributions of individual reactive biogenic volatile organic compounds to organic2  

E-Print Network [OSTI]

System Laboratory, National Center for22 Atmospheric Research, Boulder, CO USA23 Now at: Air Pollution 8 Université Lille Nord de France, Lille, France16 9 �cole des Mines de Douai, Douai, France17 10

Meskhidze, Nicholas

204

Nonadiabatic calculations of ultraviolet absorption cross section of sulfur monoxide: Isotopic effects on the photodissociation reaction  

SciTech Connect (OSTI)

Ultraviolet absorption cross sections of the main and substituted sulfur monoxide (SO) isotopologues were calculated using R-Matrix expansion technique. Energies, transition dipole moments, and nonadiabatic coupling matrix elements were calculated at MRCI/AV6Z level. The calculated absorption cross section of {sup 32}S{sup 16}O was compared with experimental spectrum; the spectral feature and the absolute value of photoabsorption cross sections are in good agreement. Our calculation predicts a long lived photoexcited SO* species which causes large non-mass dependent isotopic effects depending on the excitation energy in the ultraviolet region.

Danielache, Sebastian O.; Tomoya, Suzuki; Nanbu, Shinkoh [Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Chiyoda Ku, Tokyo 102-8554 (Japan)] [Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Chiyoda Ku, Tokyo 102-8554 (Japan); Kondorsky, Alexey [P. N. Lebedev Physical Institute of Russian Academy of Science, Leninsky pr., 53, Moscow, 119991 (Russian Federation) [P. N. Lebedev Physical Institute of Russian Academy of Science, Leninsky pr., 53, Moscow, 119991 (Russian Federation); Moscow Institute of Physics and Technology (State University), Institutsky per., 9, Dolgoprudny Moscow region, 141700 (Russian Federation); Tokue, Ikuo [Department of Chemistry, Faculty of Science, Niigata University, Ikarashi, Niigata 950-2181 (Japan)] [Department of Chemistry, Faculty of Science, Niigata University, Ikarashi, Niigata 950-2181 (Japan)

2014-01-28T23:59:59.000Z

205

A Comment on \\The Cross-Section of Volatility and Expected Returns": The Statistical Signi  

E-Print Network [OSTI]

on "The Cross-Section of Volatility and Expected Returns":on “The Cross-Section of Volatility and Expected Returns”:the pricing of aggregate volatility risk and idiosyncratic

Anderson, Robert M.; Bianchi, Stephen W.; Goldberg, Lisa R.

2012-01-01T23:59:59.000Z

206

PSERC 98-22 "Market Power and Price Volatility in  

E-Print Network [OSTI]

PSERC 98-22 "Market Power and Price Volatility in Restructured Markets for Electricity" Tim Mount-562-3966. #12;MARKET POWER AND PRICE VOLATILITY IN RESTRUCTURED MARKETS FOR ELECTRICITY Tim Mount School.edu Abstract The restructured market for electricity in the UK has experienced a systematic pattern of price

207

CEC-500-2010-FS-017 Volatility of Ultrafine Particulate  

E-Print Network [OSTI]

. Limited research has been done to characterize compressed natural gas mass emissions and practically-volatile and semi-volatile fractions of ultrafine particulate matter emissions from compressed natural gas vehicles compressed natural gas, and emission control technologies that will best protect human health

208

Thermodynamic modeling of volatile hazardous metal behavior in the Vortec Vitrification System  

SciTech Connect (OSTI)

The thermochemical equilibrium calculations indicate that at the temperature of a propane--air flame, some volatilization of uranium, plutonium, technetium, and cesium will occur. The expected concentrations of plutonium, technetium, and cesium in the flame will be very low because of the small maximum concentration of these elements in the projected feed materials for the first 30-day test. The quantities volatilized can generally be decreased by operating the flame in a fuel-rich mode, although this will lead to greater carbon monoxide production, which may be more objectionable. The concentrations of chlorine and fluorine, at least at the maximum levels in the projected Vortec feed, are not projected to greatly influence the vaporization rates. Therefore, blending to reduce the concentrations of those elements would most likely not be effective in reducing metal vaporization. Most of the elements vaporized condense by the time the gas cools to 2000 F. These elements would condense either on surfaces near the front of the heat recuperator or on entrained particulates or homogeneously as relatively pure submicron particles. Cesium would be expected to condense at the lower temperatures near the rear of the recuperator, although the expected maximum concentration in the Vortec feed material is extremely low so it should be greatly diluted by other particulates. The elements that condense on other entrained particles will form enriched surface coatings. Particles larger than 10{micro}m or so will be collected in the scrubber. Smaller particles, especially the submicron particles formed from homogeneous nucleation, should be largely collected in the HEPA filter. Deposits formed in the heat recuperator can normally be handled via sootblowing. To reduce handling problems, we suggest that the recuperator be oriented vertically so that the deposits blown off of the heat exchanger fall directly into the molten glass. The large size of the deposits should help to reduce the rate of revaporization, allowing the volatile elements to be removed with the glass. The volatile elements that do not deposit on system surfaces will be concentrated in the smaller particles. Therefore, the HEPA ash will be greatly enriched in these elements. If the HEPA filter is itself sent to a melter, the elements may revaporize and multiply the problems related to metal vaporization significantly. Therefore, the HEPA filters should be disposed of without high-temperature processing. Also, to reduce the formation of these very small particles, it is helpful to include in the feed larger particles to act as condensation nuclei that can then be collected in the scrubber. This can be accomplished by using feed materials with a fraction consisting of particles small enough that they will not be collected in the cyclone in the melter, but large enough that they will easily be collected by the scrubber. This is one advantage that firing bituminous coal has over gas firing; it provides a source of ash particles of the right size range to serve as nucleation sites, but large enough (depending on the coal) so that they can usually be collected efficiently in the scrubber system.

Nowok, J.W.; Hurley, J.P.

2000-07-31T23:59:59.000Z

209

Ultraviolet photoelectron spectroscopic study of the interaction of potassium with carbon monoxide and benzene on the Pt(111) surface  

SciTech Connect (OSTI)

The interaction of potassium with carbon monoxide and benezene has been studied on the Pt(111) crystal surface by ultraviolet photoelectron spectroscopy (UPS). The adsorptive changes reported in previous studies for carbon monoxide and benzene when potassium is coadsorbed are correlated with the UPS results presented here and are explained with the aid of a molecular orbital analysis. The authors find that the valence molecular orbitals increase their binding energy slightly when the potassium is coadsorbed, implying a model in which the adsorbates sense the potassium-induced changes in dipole field at the surface. 36 references, 11 figures.

Kudo, M.; Garfunkel, E.L.; Somorjai, G.A.

1985-07-18T23:59:59.000Z

210

Observation of two-dimensional compositional ordering of a carbon monoxide and argon monolayer mixture physisorbed on graphite  

SciTech Connect (OSTI)

Commensurate monolayers of a mixture of 70% carbon monoxide and 30% argon on graphite are studied by neutron and low-energy-electron diffraction. A 2 x 2 superstructure due to 3:1 compositional ordering is observed below 25 K. The compositional ordering is most likely due to molecular-axis ordering of carbon monoxide molecules into a pinwheel pattern with argon atoms at the central sites of each pinwheel. Such a pinwheel structure has been predicted by Harris, Mouritsen, and Berlinsky for planar rotors with anisotropic interactions on a triangular lattice with vacancies.

You, H.; Fain, S.C. Jr.; Satija, S.; Passell, L.

1986-01-20T23:59:59.000Z

211

Thermal device and method for production of carbon monoxide and hydrogen by thermal dissociation of hydrocarbon gases  

DOE Patents [OSTI]

Carbon monoxide is produced in a fast quench reactor. The production of carbon monoxide includes injecting carbon dioxide and some air into a reactor chamber having a high temperature at its inlet and a rapidly expanding a reactant stream, such as a restrictive convergent-divergent nozzle at its outlet end. Carbon dioxide and other reactants such as methane and other low molecular weight hydrocarbons are injected into the reactor chamber. Other gas may be added at different stages in the process to form a desired end product and prevent back reactions. The resulting heated gaseous stream is then rapidly cooled by expansion of the gaseous stream.

Detering, Brent A. (Idaho Falls, ID); Kong, Peter C. (Idaho Falls, ID)

2001-01-01T23:59:59.000Z

212

Method and apparatus for destroying organic contaminants in aqueous liquids  

DOE Patents [OSTI]

A method and apparatus for destroying organic contaminants, such as trichloroethylene, in aqueous liquids, such as groundwater, utilizing steam stripping integrated with biodegradation. The contaminated aqueous liquid is fed into a steam stripper causing the volatilization of essentially all of the organic contaminants and a portion of the aqueous liquid. The majority of the aqueous liquid is discharged from the steam stripper. The volatilized vapors are then condensed to the liquid phase and introduced into a bioreactor. The bioreactor contains methanotrophic microorganisms which convert the organic contaminants into mainly carbon dioxide. The effluent from the bioreactor is then recycled back to the steam stripper for further processing. 2 figures.

Donaldson, T.L.; Wilson, J.H.

1993-09-21T23:59:59.000Z

213

Adsorption and desorption of hydrogen and carbon monoxide were studied on alumina-supported iridium catalysts  

SciTech Connect (OSTI)

The adsorption and desorption of hydrogen and carbon monoxide were studied on alumina-supported iridium catalysts which were examined by a scanning transmission electron microscope (STEM). The metal particle size and number of particles per area of catalyst increased with increasing metal loading. The particles were approx. 10 A. in diameter, cubo-octahedral shaped, and approx. 80-90% disperse. The STEM electron beam caused negligible damage to the samples. Hydrogen adsorption measurements showed that the hydrogen-iridium atom ratio was 1.2:1-1.3:1 and increased with decreasing metal loading. Temperature-programed desorption showed four types of adsorbed hydrogen desorbing at -90/sup 0/C (I), 15/sup 0/C (IV), 115/sup 0/C (II), and 245/sup 0/C (III). Types II and IV desorb from single atom sites and Types I and III from multiple atom sites. Type I is in rapid equilibrium with the gas phase. All desorption processes appear to be first order. Carbon monoxide adsorbed nondissociatively at 25/sup 0/C with approx. 0.7:1 CO/Ir atom ratio. It adsorbed primarily in linear forms at low coverage, but a bridged form appeared at high coverage.

Etherton, B.P.

1980-01-01T23:59:59.000Z

214

Essays on Resource Allocation and Management, Price Volatility and Applied Nonparametrics  

E-Print Network [OSTI]

85 3.4.4 Comparing GARCH and MRS VolatilityMRS and GARCH Conditional Standard Deviation for (a) CCXF. (2002). Improving GARCH Volatility Forecasts with Regime-

Nigatu, Getchew Sisay

2012-01-01T23:59:59.000Z

215

Nitrogen Trifluoride-Based Fluoride- Volatility Separations Process: Initial Studies  

SciTech Connect (OSTI)

This document describes the results of our investigations on the potential use of nitrogen trifluoride as the fluorinating and oxidizing agent in fluoride volatility-based used nuclear fuel reprocessing. The conceptual process uses differences in reaction temperatures between nitrogen trifluoride and fuel constituents that produce volatile fluorides to achieve separations and recover valuable constituents. We provide results from our thermodynamic evaluations, thermo-analytical experiments, kinetic models, and provide a preliminary process flowsheet. The evaluations found that nitrogen trifluoride can effectively produce volatile fluorides at different temperatures dependent on the fuel constituent.

McNamara, Bruce K.; Scheele, Randall D.; Casella, Andrew M.; Kozelisky, Anne E.

2011-09-28T23:59:59.000Z

216

Design and Development of a Mid-Infrared Carbon Monoxide Sensor for a High-Pressure Combustor Rig  

E-Print Network [OSTI]

A sensor for carbon monoxide measurement has been developed using a mid-infrared quantum-cascade (QC) laser operating in the fundamental band (?v= 1) of CO near 4.5 ?m. The fundamental band was chosen due to its stronger absorption line...

Camou, Alejandro

2014-05-03T23:59:59.000Z

217

Analysis of black carbon and carbon monoxide observed over the Indian Ocean: Implications for emissions and photochemistry  

E-Print Network [OSTI]

and known emission factors for black carbon (BC) from South Asia yields 0.7 Tg yrĂ?1 (upper limit of about 1 Global Change: Atmosphere (0315, 0325); KEYWORDS: Soot, black carbon, CO, emissions, India Citation of black carbon and carbon monoxide observed over the Indian Ocean: Implications for emissions

Dickerson, Russell R.

218

The price fluctuations of the stock market display fascinating properties. The volatility is around one order of magnitude too large than what is predicted  

E-Print Network [OSTI]

Abstract The price fluctuations of the stock market display fascinating properties. The volatility decisions. We also study the price formation and the microstructure of financial markets, at the level of the order book which organizes transactions. We explain why the price is diffusive despite the fact

Paris-Sud XI, Université de

219

Prediction of Carbon Monoxide and Hydrocarbon Emissions in Isooctane HCCI Engine Combustion Using Multi-Zone Simulations  

SciTech Connect (OSTI)

Homogeneous Charge Compression Ignitions (HCCI) engines show promise as an alternative to Diesel engines, yet research remains: development of practical HCCI engines will be aided greatly by accurate modeling tools. A novel detailed chemical kinetic model that incorporates information from a computational fluid mechanics code has been developed to simulate HCCI combustion. This model very accurately predicts many aspects of the HCCI combustion process. High-resolution computational grids can be used for the fluid mechanics portion of the simulation, but the chemical kinetics portion of the simulation can be reduced to a handful of computational zones (for all previous work 10 zones have been used). While overall this model has demonstrated a very good predictive capability for HCCI combustion, previous simulations using this model have tended to underpredict carbon monoxide emissions by an order of magnitude. A factor in the underprediction of carbon monoxide may be that all previous simulations have been conducted with 10 chemical kinetic zones. The chemistry that results in carbon monoxide emissions is very sensitive to small changes in temperature within the engine. The resolution in temperature is determined directly by the number of zones. This paper investigates how the number of zones (i.e. temperature resolution) affects the model's prediction of hydrocarbon and carbon monoxide emissions in an HCCI engine. Simulations with 10, 20, and 40 chemical kinetic zones have been conducted using a detailed chemical kinetic mechanism (859 species, 3606 reactions) to simulate an isooctane fueled HCCI engine. The results show that 10-zones are adequate to resolve the hydrocarbon emissions, but a greater numbers of zones are required to resolve carbon monoxide emissions. Results are also presented that explore spatial sources of the exhaust emissions within the HCCI engine combustion chamber.

Flowers, D; Aceves, S M; Martinez-Frias, J; Dibble, R

2002-05-02T23:59:59.000Z

220

Photoconversion of organic materials into single-cell protein  

DOE Patents [OSTI]

A process is described for converting organic materials (such as biomass wastes) into sterile, high-grade bacterial protein suitable for use an animal feed or human food supplements. In a preferred embodiment the process involves thermally gasifying the organic material into primarily carbon monoxide, hydrogen and nitrogen products, followed by photosynthetic bacterial assimilation of the gases into cell material, which can be as high as 65% protein. The process is ideally suited for waste recycling and for food production under zero-gravity or extra-terrestrial conditions.

Weaver, Paul F. (13130 W. 66th Pl., Golden, CO 80401)

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Chemisorption of carbon monoxide and nitrogen oxides on highly dispersed technetium  

SciTech Connect (OSTI)

The purpose of this work is to study, in infrared spectroscopy, the surface compounds formed on adsorption of carbon monoxide and nitrogen oxides on Tc/SiO/sub 2/. The samples were prepared by soaking Aerosil with aqueous solution of ammonium pertechnetate containing 10 wt.% of Tc. Reduction with hydrogen to the metal was carried out at 700-800/sup 0/C. Results indicated that chemisorption of CO on highly dispersed technetium gives rise to a single type of linear and several types of multicentered adsorption forms. Occurrence of bridge form of adsorbed CO was also suggested on the basis of the data on chemisorption stoichiometry. Formation of a structure characterizable by absorption at 1790 cm/sup -1/ may indicate, only after protracted analysis, that the surface of the technetium introduced gradually suffers significant rearrangement facilitating formation of this type of complexes.

Serebryakova, N.V.; Sokolova, N.P.; Spitsyn, V.S.

1982-08-01T23:59:59.000Z

222

Transformation of carbon monoxide dimer surface structures on yttrium oxide modified by silver  

SciTech Connect (OSTI)

It has been established that introducing ions of silver(II) in yttrium(III) oxide leads to the formation of a significant concentration of a paramagnetic dimer species (CO)/sub 2/-in the course of the adsorption of carbon monoxide, and that these dimers exhibit high thermal stability and reactivity. Reactions are proposed for the formation of the dimer species (CO)/sub 2//sup 2 -/ and (CO)/sub 2//sup -/ on the surface of the Ag/Y/sub 2/O/sub 3/ catalyst that involve the reduction of the anion vacancies and a change in the oxidation state of the silver ions. Modifying the yttrium oxide with ionic silver leads to a marked decrease in the strength of the oxidative ability of the surface of the catalyst for CO, while the nature of the active sites of the yttrium oxide, which adsorbs CO in three forms, remains unchanged.

Vydrin, S.N.; Bobolev, A.V.; Loginov, A.Yu.

1987-09-10T23:59:59.000Z

223

Infrared spectroscopic study of the adsorption of carbon monoxide on silica-supported copper oxide  

SciTech Connect (OSTI)

Adsorption of carbon monoxide at room temperature (0.1 to 50 Torr) on silica-supported copper oxide was studied by infrared spectroscopy. Catalysts were prepared by deposition-precipitation or impregnation. After calcination two types of adsorbed CO were identified showing absorption bands at 2136 +- 3 and 2204 +- 1 cm/sup -1/, which are ascribed to CO adsorbed on copper(II) oxide and on isolated copper(II) ions in the silica surface, respectively. Reduction and reoxidation removed the band at 2204 cm/sup -1/ with all samples and raised the intensity of the 2136-cm/sup -1/ band with the precipitated catalysts but not with the impregnation catalyst. Evidence is brought forward that the isolated copper ions are mobilized during reduction and generate new copper (oxide) surface. The change in background transmission of the samples could be used to obtain further information about the interaction of O/sub 2/ and CO with copper oxide.

De Jong, K.P.; Geus, J.W.; Joziasse, J.

1980-10-01T23:59:59.000Z

224

Financial distortions and the distribution of global volatility  

E-Print Network [OSTI]

In this thesis, I study the interactions between various aspects of the financial system and macroeconomic volatility in a globally integrated environment. In Chapter 1, I illustrate that an efficient allocation of liquidity ...

Eden, Maya Rachel

2011-01-01T23:59:59.000Z

225

Bootstrap Prediction for Returns and Volatilities in GARCH Models  

E-Print Network [OSTI]

Bootstrap Prediction for Returns and Volatilities in GARCH Models Lorenzo Pascuala , Juan Romob of GARCH processes is proposed. Financial market participants have shown an increasing interest Autoregressive Conditionally Heteroscedastic (GARCH) models, originally introduced by Bollerslev (1986), provide

Ortega, Esther Ruiz

226

Forecasting Returns and Volatilities in GARCH Processes Using the Bootstrap  

E-Print Network [OSTI]

Forecasting Returns and Volatilities in GARCH Processes Using the Bootstrap Lorenzo Pascual, Juan generated by GARCH processes. The main advantage over other bootstrap methods previously proposed for GARCH by having conditional heteroscedasticity. Generalized Autoregressive Conditionally Heteroscedastic (GARCH

Romo, Juan

227

Temporal Geochemical Variations In Volatile Emissions From Mount...  

Open Energy Info (EERE)

Temporal Geochemical Variations In Volatile Emissions From Mount St Helens, Usa, 1980-1994 Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article:...

228

Growth History Of Kilauea Inferred From Volatile Concentrations...  

Open Energy Info (EERE)

Concentrations In Submarine-Collected Basalts Abstract Major-element and volatile (H2O, CO2, S) compositions of glasses from the submarine flanks of Kilauea Volcano record its...

229

The impact of fuel price volatility on transportation mode choice  

E-Print Network [OSTI]

In recent years, the price of oil has driven large fluctuations in the price of diesel fuel, which is an important cost component in freight logistics. This thesis explores the impact of fuel price volatility on supply ...

Kim, Eun Hie

2009-01-01T23:59:59.000Z

230

Carbon monoxide adsorption/desorption processes over NaX zeolite and supported ruthenium catalyst  

SciTech Connect (OSTI)

The binding states of CO on NaX zeolite and RuNaX were investigated by thermal desorption spectroscopy. Desorption peaks centered at around 390, 430, 490, and 520 K were observed from NaX following room-temperature adsorption of CO. The activation energy values corresponding to these peaks were calculated to be 41.4, 45.7, 53.8, and 57.7 kJ mol{sup {minus}1}, respectively. These peaks were also observed in desorption profiles from RuNaX although their temperatures were higher by 10 to 20 K. In addition, the desorption spectra from RuNaX also comprise two high-temperature peaks at around 575 and 640 K. With both the RuNaX and the NaX samples the temperature and relative intensities of the desorption peaks depended on pretreatment conditions and on the lapsed time between CO exposure to the sample and the commencement of programmed heating. Mass spectral analysis revealed that the gas desorbed at 300-500 K consisted mainly of CO while at higher temperatures CO{sub 2} was the main component. The desorption peaks below 500 K are attributed to the release of carbon monoxide from structural and intragranular or intergranular zeolitic pores. Lewis sites on the zeolite surface are found to facilitate activation of CO, resulting in its transformation to CO{sub 2}. The initial adsorption of carbon monoxide in zeolite pores and subsequent diffusion to metal sites leading to its disproportionation/oxidation is found to play an important role in the CO adsorption/desorption process on RuNaX.

Kamble, V.S.; Gupta, N.M.; Iyer, R.M. (Bhabha Atomic Research Centre, Bombay (India))

1988-10-01T23:59:59.000Z

231

A Broad Spectrum Catalytic System for Removal of Toxic Organics from Water by Deep Oxidation - Final Report  

SciTech Connect (OSTI)

A most pressing need for the DOE environmental management program is the removal of toxic organic compounds present in groundwater and soil at specific DOE sites. While several remediation procedures have been proposed, they suffer from one or more drawbacks. The objective of the present research was to develop new catalytic procedures for the removal of toxic organic compounds from the environment through their deep oxidation to harmless products. In water, metallic palladium was found to catalyze the deep oxidation of a wide variety of toxic organic compounds by dioxygen at 80-90 C in the presence of carbon monoxide or dihydrogen. Several classes of organic compounds were examined: benzene, phenol and substituted phenols, nitro and halo organics, organophosphorus, and organosulfur compounds. In every case, deep oxidation to carbon monoxide, carbon dioxide, and water occurred in high yields, resulting in up to several hundred turnovers over a 24 hour period. For substrates susceptible to hydrogenation, the conversions were generally high with dihydrogen than with carbon monoxide. It is clear from the results obtained that we have discovered an exceptionally versatile catalytic system for the deep oxidation of toxic organic compounds in water. This system possesses several attractive features not found simultaneously in other reported systems. These are (a) the ability to directly utilize dioxygen as the oxidant, (b) the ability to carry out the deep oxidation of a particularly wide range of functional organics, and (c) the ease of recovery of the catalyst by simple filtration.

Sen, Ayusman

2000-12-01T23:59:59.000Z

232

Improved Predictions of Carbon Tetrachloride Contaminant Flow and Transport: Implementation of Kinetic Volatilization and Multicomponent NAPL Behavior  

SciTech Connect (OSTI)

Carbon tetrachloride (CT) was discharged to waste sites that are included in the 200-PW-1 Operable Unit in Hanford 200 West Area. Fluor Hanford, Inc. is conducting a Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) remedial investigation/feasibility study (RI/FS) for the 200-PW-1 Operable Unit. The RI/FS process and remedial investigations for the 200-PW-1, 200 PW-3, and 200-PW-6 Operable Units are described in the Plutonium/Organic-Rich Process Condensate/Process Waste Groups Operable Unit RI/FS Work Plan. As part of this overall effort, Pacific Northwest National Laboratory (PNNL) was contracted to improve the STOMP simulator (White and Oostrom, 2006) by incorporating kinetic volatilization of nonaqueous phase liquids (NAPL) and multicomponent flow and transport. This work supports the U.S. Department of Energy's (DOE's) efforts to characterize the nature and distribution of CT in the 200 West Area and subsequently select an appropriate final remedy. Previous numerical simulation results with the STOMP simulator have overestimated the effect of soil vapor extraction (SVE) on subsurface CT, showing rapid removal of considerably more CT than has actually been recovered so far. These previous multiphase simulations modeled CT mass transfer between phases based on equilibrium partitioning. Equilibrium volatilization can overestimate volatilization because mass transfer limitations present in the field are not considered. Previous simulations were also conducted by modeling the NAPL as a single component, CT. In reality, however, the NAPL mixture disposed of at the Hanford site contained several non-volatile and nearly insoluble organic components, resulting in time-variant fluid properties as the CT component volatilized or dissolved over time. Simulation of CT removal from a DNAPL mixture using single-component DNAPL properties typically leads to an overestimation of CT removal. Other possible reasons for the discrepancy between observed and simulated CT mass removal during SVE are differences between the actual and simulated (1) SVE flow rates, (2) fluid-media properties, and (3) disposal history (volumes, rates, and timing). In this report, numerical implementation of kinetic volatilization and multicomponent DNAPL flow and transport into the STOMP simulator (White and Oostrom, 2006) is described. The results of several test cases are presented and explained. The addition of these two major code enhancements increases the ability of the STOMP simulator to model complex subsurface flow and transport processes involving CT at the Hanford site.

Oostrom, Martinus; Zhang, Z. F.; Freedman, Vicky L.; Tartakovsky, Guzel D.

2008-09-29T23:59:59.000Z

233

Oxidation of carbon monoxide and hydrocarbons on platinum and palladium catalysts in the presence of sulfur dioxide  

SciTech Connect (OSTI)

The authors report on a study of the effect of sulfur dioxide on the activity of platinum and palladium catalysts with respect to oxidation of the principal toxic components in the exhaust gases of internal combustion engines: carbon monoxide and hydrocarbons (propylene (C/sub 3/H/sub 6/) and propane (C/sub 3/H/sub 8/)). The experiments were carried out in a flow system equipped with Beckman infrared analyzers to monitor the concentrations of CO and hydrocarbons and of sulfur dioxide. A series of thermal desorption experiments was carried out in a low-pressure flow system with mass spectrometric analysis of the gas phase. The results indicate that the low-temperature adsorption of sulfur dioxide on platinum (and also palladium) catalysts inhibits the oxidation of carbon monoxide and propylene. The poisoning effect of O/sub 2/ is due to blockage of the platinum centers for adsorption of the oxidizable compounds and oxygen.

Panchishnyi, V.I.; Bondareva, N.K.; Sklyarov, A.V.; Rozanov, V.V.; Chadina, G.P.

1988-11-10T23:59:59.000Z

234

Volatility literature of chlorine, iodine, cesium, strontium, technetium, and rhenium; technetium and rhenium volatility testing  

SciTech Connect (OSTI)

A literature review pertaining to the volatilization of Sr, Cs, Tc (and its surrogate Re), Cl, I and other related species during the vitrification of Hanford Low Level Waste (LLW) streams has been performed and the relevant information summarized. For many of these species, the chemistry which occurs in solution prior to the waste stream entering the melter is important in dictating their loss at higher temperatures. In addition, the interactive effects between the species being lost was found to be important. A review of the chemistries of Tc and Re was also performed. It was suggested that Re would indeed act as an excellent surrogate for Tc in non-radioactive materials testing. Experimental results on Tc and Re loss from sodium aluminoborosilicate melts of temperatures ranging from 900--1350{degrees}C performed at PNL are reported and confirm that Re behaves in a nearly identical manner to that of technetium.

Langowski, M.H.; Darab, J.G.; Smith, P.A.

1996-03-01T23:59:59.000Z

235

Molten metal reactor and method of forming hydrogen, carbon monoxide and carbon dioxide using the molten alkaline metal reactor  

DOE Patents [OSTI]

A molten metal reactor for converting a carbon material and steam into a gas comprising hydrogen, carbon monoxide, and carbon dioxide is disclosed. The reactor includes an interior crucible having a portion contained within an exterior crucible. The interior crucible includes an inlet and an outlet; the outlet leads to the exterior crucible and may comprise a diffuser. The exterior crucible may contain a molten alkaline metal compound. Contained between the exterior crucible and the interior crucible is at least one baffle.

Bingham, Dennis N.; Klingler, Kerry M.; Turner, Terry D.; Wilding, Bruce M.

2012-11-13T23:59:59.000Z

236

Gas-phase energies of actinide oxides -- an assessment of neutral and cationic monoxides and dioxides from thorium to curium  

SciTech Connect (OSTI)

An assessment of the gas-phase energetics of neutral and singly and doubly charged cationic actinide monoxides and dioxides of thorium, protactinium, uranium, neptunium, plutonium, americium, and curium is presented. A consistent set of metal-oxygen bond dissociation enthalpies, ionization energies, and enthalpies of formation, including new or revised values, is proposed, mainly based on recent experimental data and on correlations with the electronic energetics of the atoms or cations and with condensed-phase thermochemistry.

Marcalo, Joaquim; Gibson, John K.

2009-08-10T23:59:59.000Z

237

Total oxidation of carbon monoxide and methane over transition metal-fluorite oxide composite catalysts. I. Catalyst composition and activity  

SciTech Connect (OSTI)

A novel metal oxide composite catalyst for the total oxidation of carbon monoxide and methane was prepared by combining fluorite oxides with active transition metals. The fluorite oxides, such as ceria and zirconia, are oxygen-ion-conducting materials having catalytic properties usually at high temperatures. Active base metal catalysts, such as copper, were used as additives to promote the catalytic properties of these oxides. The contact of the two types of materials gave rise to a high active oxidation catalyst. At a space velocity of about 42,000 h{sup {minus}1}, complete carbon monoxide oxidation in air occurred at room temperature on the Au{sub 0.05}[Ce(La)]{sub 0.95}L{sub x} catalyst and at ca. 100{degrees}C on Cu-Ce-O composite catalysts. At the same space velocity, total oxidation of methane on the Cu-Ce-O catalyst doped with La{sub 2}O{sub 3} or SrO took place at ca. 550{degrees}C. The specific carbon monoxide oxidation activity of the Cu-Ce-O catalyst was several orders of magnitude higher than that of conventional copper-based catalysts and comparable or superior to platinum catalysts. This type of composite catalyst also showed excellent resistance to water vapor poisoning. The enhanced catalyst activity and stability resulted from strong interaction of the transition metal and fluorite oxide materials. 44 refs., 14 figs., 5 tabs.

Liu, W.; Flytzani-Stephanopoulos, F. [Tufts Univ., Medford, MA (United States)] [Tufts Univ., Medford, MA (United States)

1995-05-01T23:59:59.000Z

238

Adsorption of carbon monoxide on a smooth palladium electrode: an in-situ infrared spectroscopic study  

SciTech Connect (OSTI)

Adsorption of carbon monoxide on a smooth palladium electrode in 1 M HClO/sub 4/ saturated with CO was studied by two in-situ IR reflectance spectroscopic methods: EMIRS (electrochemically modulated infrared reflectance spectroscopy) and LPSIRS (linear potential sweep infrared reflectance spectroscopy). Two types of adsorbed CO, linear and bridged, were identified from the observed IR spectra, the latter being the predominant surface species. The C-O stretching frequency of the linear CO shifts to higher frequencies at more positive potentials with a slope of 48 cm/sup -1//V. The frequency of the bridged CO increases by 63 cm/sup -1/ between -0.5 and 0.9 V(NHE) and its integrated band intensity decreases continuously in the same potential region while the intensity of the linear CO is almost constant up to 0.1 V and then decreases gradually with increasing positive potential. The surface selection rule of the IR reflection absorption spectroscopy was tested for the present system by using the p- and s-polarized light. It was found that only p-polarized light gave the IR spectra of CO adsorbed on the palladium electrode thus proving the selection rule at the electrode/solution interface.

Kunimatsu, K.

1984-05-24T23:59:59.000Z

239

Relative and kinetic properties of carbon monoxide and carbon dioxide on a graphite surface  

SciTech Connect (OSTI)

Temperature-programmed desorption (TPD) results after chemisorption of carbon monoxide (CO) and carbon dioxide (CO/sub 2/) on polycrystalline graphite are presented. CO adsorbs onto graphite with a very low sticking coefficient. After CO chemisorption CO (mass 28 amu) desorbs in two temperature regions, between 400 and 700 K and between 1000 and 1300 K, and CO/sub 2/ (mass 44 amu) desorbs below 950 K. The intensity of the CO/sub 2/ signal is less than 1 order of magnitude lower than the CO intensity. After CO/sub 2/ adsorption the major desorption product is CO at high temperatures (1000 < T (K) < 1300), whereas a small amount of CO/sub 2/ desorbs around 450 K. The adsorption of C/sup 16/O/sub 2/ and C/sup 18/O/sub 2/ mixture leads to a nearly total oxygen scrambling of the CO/sub 2/ desorbed. A mechanism for CO and CO/sub 2/ interconversion on the graphite surface is presented in terms of surface oxide species, mainly lactones and semiquinones, and their relative stability. Assignments of the TPD features are proposed accordingly. Reaction studies on the CO/sub 2/ gasification of clean graphite and the CO disproportionation (Boudouard reaction) have been performed. A good agreement is found between the activation energies obtained and the desorption energies calculated from the analysis of the TPD results.

Marchon, B.; Tysoe, W.T.; Carrazza, J.; Heinemann, H.; Somorjai, G.A.

1988-10-06T23:59:59.000Z

240

Solar Carbon Monoxide, Thermal Profiling, and the Abundances of C, O, and their Isotopes  

E-Print Network [OSTI]

A solar photospheric "thermal profiling" analysis is presented, exploiting the infrared rovibrational bands of carbon monoxide (CO) as observed with the McMath-Pierce Fourier transform spectrometer (FTS) at Kitt Peak, and from above the Earth's atmosphere by the Shuttle-borne ATMOS experiment. Visible continuum intensities and center-limb behavior constrained the temperature profile of the deep photosphere, while CO center-limb behavior defined the thermal structure at higher altitudes. The oxygen abundance was self consistently determined from weak CO absorptions. Our analysis was meant to complement recent studies based on 3-D convection models which, among other things, have revised the historical solar oxygen (and carbon) abundance downward by a factor of nearly two; although in fact our conclusions do not support such a revision. Based on various considerations, an oxygen abundance of 700+/-100 ppm (parts per million relative to hydrogen) is recommended; the large uncertainty reflects the model sensitivity of CO. New solar isotopic ratios also are reported for 13C, 17O, and 18O.

Thomas R. Ayres; Claude Plymate; Christoph U. Keller

2006-06-07T23:59:59.000Z

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


241

Spectroscopic detection of Carbon Monoxide in the Young Supernova Remnant Cassiopeia A  

E-Print Network [OSTI]

We report the detection of carbon monoxide (CO) emission from the young supernova remnant Cassiopeia A (Cas A) at wavelengths corresponding to the fundamental vibrational mode at 4.65 micron. We obtained AKARI Infrared Camera spectra towards 4 positions which unambiguously reveal the broad characteristic CO ro-vibrational band profile. The observed positions include unshocked ejecta at the center, indicating that CO molecules form in the ejecta at an early phase. We extracted a dozen spectra across Cas A along the long 1 arcmin slits, and compared these to simple CO emission models in Local Thermodynamic Equilibrium to obtain first-order estimates of the excitation temperatures and CO masses involved. Our observations suggest that significant amounts of carbon may have been locked up in CO since the explosion 330 years ago. Surprisingly, CO has not been efficiently destroyed by reactions with ionized He or the energetic electrons created by the decay of the radiative nuclei. Our CO detection thus implies that...

Rho, Jeonghee; Cami, Jan; Reach, William

2012-01-01T23:59:59.000Z

242

Simultaneous Detection of Water, Methane and Carbon Monoxide in the Atmosphere of Exoplanet HR8799b  

E-Print Network [OSTI]

Absorption lines from water, methane and carbon monoxide are detected in the atmosphere of exoplanet HR8799b. A medium-resolution spectrum presented here shows well-resolved and easily identified spectral features from all three molecules across the K band. The majority of the lines are produced by CO and H2O, but several lines clearly belong to CH4. Comparisons between these data and atmosphere models covering a range of temperatures and gravities yield log mole fractions of H2O between -3.09 and -3.91, CO between -3.30 and -3.72 and CH4 between -5.06 and -5.85. More precise mole fractions are obtained for each temperature and gravity studied. A reanalysis of H-band data, previously obtained at similar spectral resolution, results in a nearly identical water abundance as determined from the K-band spectrum. The methane abundance is shown to be sensitive to vertical mixing and indicates an eddy diffusion coefficient in the range of 10^6 to 10^8 cm^2 s^-1, comparable to mixing in the deep troposphere of Jupite...

Barman, Travis S; Macintosh, Bruce; Marois, Christian

2015-01-01T23:59:59.000Z

243

Search for the electric dipole moment of the electron with thorium monoxide  

E-Print Network [OSTI]

The electric dipole moment of the electron (eEDM) is a signature of CP-violating physics beyond the Standard Model. We describe an ongoing experiment to measure or set improved limits to the eEDM, using a cold beam of thorium monoxide (ThO) molecules. The metastable $H {}^3\\Delta_1$ state in ThO has important advantages for such an experiment. We argue that the statistical uncertainty of an eEDM measurement could be improved by as much as 3 orders of magnitude compared to the current experimental limit, in a first-generation apparatus using a cold ThO beam. We describe our measurements of the $H$ state lifetime and the production of ThO molecules in a beam, which provide crucial data for the eEDM sensitivity estimate. ThO also has ideal properties for the rejection of a number of known systematic errors; these properties and their implications are described.

Amar C. Vutha; Wesley C. Campbell; Yulia V. Gurevich; Nicholas R. Hutzler; Maxwell Parsons; David Patterson; Elizabeth Petrik; Benjamin Spaun; John M. Doyle; Gerald Gabrielse; David DeMille

2010-11-06T23:59:59.000Z

244

Relationship of respiratory symptoms and pulmonary function to tar, nicotine, and carbon monoxide yield of cigarettes  

SciTech Connect (OSTI)

The data from consecutive surveys of the Tucson Epidemiologic Study (1981-1988) were used to evaluate the relationship in cigarette smokers of respiratory symptoms and pulmonary function to tar, nicotine, and carbon monoxide (CO) yields of the cigarette. There were 690 subjects who reported smoking regularly in at least one survey, over age 15. After adjustment for intensity and duration of smoking and for depth of inhalation, the risk of chronic phlegm, cough, and dyspnea were not related to the tar and nicotine yields. In 414 subjects with pulmonary function tested in at least one of the three surveys the spirometric indices used were significantly related to the daily dose of tar, nicotine, and CO (product of the cigarette yield and daily number of cigarettes smoked). The effects were more pronounced for past than for current doses. However, the differentiation of pulmonary function due to various yields of cigarettes was small in comparison to the difference in pulmonary function between smokers and nonsmokers.

Krzyzanowski, M.; Sherrill, D.L.; Paoletti, P.; Lebowitz, M.D. (National Institute of Hygiene, Warsaw (Poland))

1991-02-01T23:59:59.000Z

245

Carbon monoxide oxidation over three different states of copper: Development of a model metal oxide catalyst  

SciTech Connect (OSTI)

Carbon monoxide oxidation was performed over the three different oxidation states of copper -- metallic (Cu), copper (I) oxide (Cu{sub 2}O), and copper (II) oxide (CuO) as a test case for developing a model metal oxide catalyst amenable to study by the methods of modern surface science and catalysis. Copper was deposited and oxidized on oxidized supports of aluminum, silicon, molybdenum, tantalum, stainless steel, and iron as well as on graphite. The catalytic activity was found to decrease with increasing oxidation state (Cu > Cu{sub 2}O > CuO) and the activation energy increased with increasing oxidation state (Cu, 9 kcal/mol < Cu{sub 2}O, 14 kcal/mol < CuO, 17 kcal/mol). Reaction mechanisms were determined for the different oxidation states. Lastly, NO reduction by CO was studied. A Cu and CuO catalyst were exposed to an equal mixture of CO and NO at 300--350 C to observe the production of N{sub 2} and CO{sub 2}. At the end of each reaction, the catalyst was found to be Cu{sub 2}O. There is a need to study the kinetics of this reaction over the different oxidation states of copper.

Jernigan, G.G. [California Univ., Berkeley, CA (United States). Dept. of Chemistry; [Lawrence Berkeley Lab., CA (United States). Materials and Chemical Sciences Div.

1994-10-01T23:59:59.000Z

246

An advanced hybrid reprocessing system based on UF{sub 6} volatilization and chromatographic separation  

SciTech Connect (OSTI)

To recover U, Pu, MA (Np, Am, Cm) and some specific fission products FPs (Cs, Sr, Tc, etc.) from various spent nuclear fuels (LWR/FBR: Oxide, Metal Fuels), we are studying an advanced hybrid reprocessing system based on UF6 volatilization (Pyro) and chromatographic separation (Aqueous). Spent fuels are de-cladded by means of thermal and mechanical methods and then applied to the fluorination/volatilization process, which selectively recovers the most amount of U. Then, the remained fuel components are converted to oxides and dissolved by HNO{sub 3} solution. Compared to U, since Pu, MA and FPs are significantly less abundant in spent fuels, the scale of the aqueous separation process could become reasonably small and result in less waste. For the chromatographic separation processes, we have prepared different types of porous silica-based organic/inorganic adsorbents with fast diffusion kinetics, improved chemical stability and low pressure drop in a packed column. So they are advantageously applicable to efficient separation of the actinides and FP elements from the fuel dissolved solution. In this work, adsorption and separation behavior of representative actinides and FP elements was studied. Small scale separation tests using simulated and genuine fuel dissolved solutions were carried out to verify the feasibility of the proposed process. (authors)

Wei, Yuezhou [Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240 (China); Tohoku University, Aoba-ku, Sendai 980-8578 (Japan); Liu, Ruiqin; Wu, Yan; Zu, Jianhua; Zhao, Long [Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240 (China); Mimura, Hitoshi [Tohoku University, Aoba-ku, Sendai 980-8578 (Japan); Shi, Weiqun; Chai, Zhifang [Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049 (China); Yang, Jinling; Ding, Youqian [China Institute of Atomic Energy, Beijing 102413 (China)

2013-07-01T23:59:59.000Z

247

Freeway Short-Term Traffic Flow Forecasting by Considering Traffic Volatility Dynamics and Missing Data Situations  

E-Print Network [OSTI]

, assuming constant variance when perform forecasting. This method does not consider the volatility nature of traffic flow data. This paper demonstrated that the variance part of traffic flow data is not constant, and dependency exists. A volatility model...

Zhang, Yanru

2012-10-19T23:59:59.000Z

248

Quantifying the value that wind power provides as a hedge against volatile natural gas prices  

E-Print Network [OSTI]

Gas Pricing by Regulated Natural Gas Utilities, Docket No.A HEDGE AGAINST VOLATILE NATURAL GAS PRICES Mark Bolinger,A HEDGE AGAINST VOLATILE NATURAL GAS PRICES Mark Bolinger,

Bolinger, Mark; Wiser, Ryan; Golove, William

2002-01-01T23:59:59.000Z

249

Integration of Micro Patterning Techniques into Volatile Functional Materials and Advanced Devices  

E-Print Network [OSTI]

Novel micro patterning techniques have been developed for the patterning of volatile functional materials which cannot be conducted by conventional photolithography. First, in order to create micro patterns of volatile materials (such as bio...

Hong, Jung M.

2010-07-14T23:59:59.000Z

250

Biogenic Potassium Salt Particles as Seeds for Secondary Organic  

E-Print Network [OSTI]

for the condensation of low- or semi-volatile organic compounds from the atmospheric gas phase or multiphase oxidation is most relevant to the activation of cloud condensation nuclei (6). The aerosol samples were collected The fine particles serving as cloud condensation nuclei in pristine Amazonian rainforest air consist mostly

251

Ammonia volatilization from surface application of ammonium sulfate to carbonate systems  

E-Print Network [OSTI]

from surface application of' ammonium fertilizers to calcareous soils 7 Ammonia Volatilization from Limed, Acid Soil Comparison of ammonia vole, tilization from different ammonium fertilizers Other factors affecting ammonia volatilization 10...-Newman-Keul's multiple range analysis of ammonia volatilization from a limed, acid soil supporting Coastal bermudagrass as affected by calcium carbonate . 58 Student-Newman-Keul's multiple range analysis of ammonia volatilization i'rom a limed. , acid soil supporting...

Feagley, Sam Edward

1976-01-01T23:59:59.000Z

252

Organizational Adaptation in Volatile Environments Kathleen M. Carley  

E-Print Network [OSTI]

by environmental volatility. This paper uses a computational model of organizational learning to theorize about within an ecology of learning in which change is occurring at many levels -- individual, organizational organizational adaptation as resulting from strategic maneuvering in a learning ecology will be illustrated using

Sadeh, Norman M.

253

Neuropeptide alterations in the tree shrew hypothalamus during volatile anesthesia  

E-Print Network [OSTI]

Neuropeptide alterations in the tree shrew hypothalamus during volatile anesthesia Laetitia perception and brain cognitive state. Prolonged general anesthesia has an impact on many of these processes anesthesia administered accompanying a neurosurgical procedure. Using a predicted-peptide database and hybrid

254

A Class of Stochastic Volatility Models for Environmental Applications  

E-Print Network [OSTI]

Pharmaceuticals Inc. Ke Wang, Pfizer Inc. F. Jay Breidt, Colorado State University Richard A. Davis, Columbia stochastic volatility modeling to this context, resulting in a stochastic heteroscedastic process (SHP), which is unconditionally stationary and non-Gaussian. Conditional on a latent GP, the SHP

Breidt, F. Jay

255

Ammonia volatilization from soils with surface rice straw residue  

E-Print Network [OSTI]

rice residue and related factors on NH3 volatilization from an acid Beaumont clay (pH 5.4) and an alkaline Lake Charles clay (pH 7.4). The treatments in the greenhouse and lab consisted of all possible combinations of the following variables: surface...

Barghassa, Peyam

1995-01-01T23:59:59.000Z

256

Quantifying the value that energy efficiency and renewable energy provide as a hedge against volatile natural gas prices  

E-Print Network [OSTI]

Gas Pricing by Regulated Natural Gas Utilities, Docket No.a Hedge Against Volatile Natural Gas Prices Mark Bolinger,wake of unprecedented natural gas price volatility during

Bolinger, Mark; Wiser, Ryan; Bachrach, Devra; Golove, William

2002-01-01T23:59:59.000Z

257

Correct quantitative determination of ethanol and volatile compounds in alcohol products  

E-Print Network [OSTI]

Determination of the volume content of ethanol in the alcohol products in practice is usually determined by pycnometry, electronic densimetry, or densimetry using a hydrostatic balance in accordance with Commission Regulation No 2870/2000. However, these methods determine directly only density of the tested liquid sample and does not take into account the effects of other volatile components such as aldehydes, esters and higher alcohols. So they are appropriate only for binary water-ethanol solutions in accordance with international table adopted by the International Legal Metrology Organization in its Recommendation No 22. Availability notable concentrations of the higher alcohols and ethers in different alcohol-based products, e. g. in whisky, cognac, brandy, wine as well as in waste alcohol and alcohol beverage production, leads to the significant contribution of these compounds in the value of the density of tested alcohol-containing sample. As a result, determination of the volume of ethanol content for ...

Charapitsa, Siarhei; Sytova, Svetlana; Yakuba, Yurii

2014-01-01T23:59:59.000Z

258

MAGNESIUM ABSORPTION IN THE CCUM OF RATS RELATED TO VOLATILE FATTY ACIDS PRODUCTION  

E-Print Network [OSTI]

MAGNESIUM ABSORPTION IN THE C�CUM OF RATS RELATED TO VOLATILE FATTY ACIDS PRODUCTION Y. RAYSSIGUIER RELATIONS ENTRE L'ABSORPTION C,4ECALE DE MAGNESIUM CHEZ LE RAT ET LA PRODUCTION D'ACIDES GRAS VOLATILS du caecum, pH, acides gras volatils, activité microbienne. Introduction The mode of magnesium

Paris-Sud XI, Université de

259

Carbon monoxide in the solar atmosphere I. Numerical method and two-dimensional models  

E-Print Network [OSTI]

The radiation hydrodynamic code CO5BOLD has been supplemented with the time-dependent treatment of chemical reaction networks. Advection of particle densities due to the hydrodynamic flow field is also included. The radiative transfer is treated frequency-independently, i.e. grey, so far. The upgraded code has been applied to two-dimensional simulations of carbon monoxide (CO) in the non-magnetic solar photosphere and low chromosphere. For this purpose a reaction network has been constructed, taking into account the reactions which are most important for the formation and dissociation of CO under the physical conditions of the solar atmosphere. The network has been strongly reduced to 27 reactions, involving the chemical species H, H2, C, O, CO, CH, OH, and a representative metal. The resulting CO number density is highest in the cool regions of the reversed granulation pattern at mid-photospheric heights and decreases strongly above. There, the CO abundance stays close to a value of 8.3 on the usual logarithmic abundance scale with [H]=12 but is reduced in hot shock waves which are a ubiquitous phenomenon of the model atmosphere. For comparison, the corresponding equilibrium densities have been calculated, based on the reaction network but also under assumption of instantaneous chemical equilibrium by applying the Rybicki & Hummer (RH) code by Uitenbroek (2001). Owing to the short chemical timescales, the assumption holds for a large fraction of the atmosphere, in particular the photosphere. In contrast, the CO number density deviates strongly from the corresponding equilibrium value in the vicinity of chromospheric shock waves. Simulations with altered reaction network clearly show that the formation channel via hydroxide (OH) is the most important one under the conditions of the solar atmosphere.

S. Wedemeyer-Boehm; I. Kamp; J. Bruls; B. Freytag

2005-03-23T23:59:59.000Z

260

Adsorption -capacity data for 283 organic compounds  

SciTech Connect (OSTI)

Adsorption on activated carbon is a widely used method for removing volatile organic compounds (VOCs) from gases and other exhaust streams. This article presents a compilation of adsorption-capacity data as a function of the VOC concentration in the gas. The results are useful in engineering and environmental studies, and in the design of carbon-based adsorption systems to remove unwanted organic pollutants from gases. For vapor control, carbon-based systems typically combine a carbon-adsorption unit with a secondary control method to reclaim or destroy the vapors desorbed during carbon-bed regeneration. To remove organics dissolved in wastewater, air stripping is typically used to transfer the organics to a vapor stream. Carbon adsorption is then used to separate the organics from the stripper exhaust. Collected vapors can be recovered for reuse or destroyed, depending on their value.

Yaws, C.L.; Bu, L.; Nijhawan, S. [Lamar Univ., Beaumont, TX (United States)

1995-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Temperature-driven decoupling of key phases of organic matter degradation in marine sediments  

E-Print Network [OSTI]

organic matter is further hydrolyzed and fermented to LMW-DOC, such as volatile fatty acids (VFAs) (2 (9­12). The organic carbon consumed by sulfate- reducing bacteria is often VFAs, such as acetic acid is recycled or buried. A diverse consor- tium of microorganisms that hydrolyze, ferment, and terminally

Weston, Nathaniel B.

262

Final Report for Organic Partitioning Resulting from Operation of an INTEC Double-needle Sampler  

SciTech Connect (OSTI)

The double needle sampler testing is a continuation of previous test series that investigated the fate of organic species in the Process Equipment Waste Evaporator (PEWE) system at the Idaho Nuclear Technology and Engineering Center (INTEC). This test series was designed to investigate the effects of operation of the double needle sampling systems on volatile organic constituents in an acidic feed matrix.

Michael B. Heiser

2003-09-01T23:59:59.000Z

263

Growth direction of oblique angle electron beam deposited silicon monoxide thin films identified by optical second-harmonic generation  

SciTech Connect (OSTI)

Oblique angle deposited (OAD) silicon monoxide (SiO) thin films forming tilted columnar structures have been characterized by second-harmonic generation. It was found that OAD SiO leads to a rotationally anisotropic second-harmonic response, depending on the optical angle of incidence. A model for the observed dependence of the second-harmonic signal on optical angle of incidence allows extraction of the growth direction of OAD films. The optically determined growth directions show convincing agreement with cross-sectional scanning electron microscopy images. In addition to a powerful characterization tool, these results demonstrate the possibilities for designing nonlinear optical devices through SiO OAD.

Vejling Andersen, Sřren; Lund Trolle, Mads; Pedersen, Kjeld [Department of Physics and Nanotechnology, Aalborg University, Skjernvej 4A, DK-9220 Aalborg Řst (Denmark)] [Department of Physics and Nanotechnology, Aalborg University, Skjernvej 4A, DK-9220 Aalborg Řst (Denmark)

2013-12-02T23:59:59.000Z

264

Kinetics of the Reduction of Wüstite by Hydrogen and Carbon Monoxide for the Chemical Looping Production of Hydrogen  

E-Print Network [OSTI]

produced could be stored, e.g. by geological sequestration, making the overall process “carbon-neutral”, or “carbon-negative” when biomass is used as fuel. In addition, the hydrogen produced during the oxidation of FexO and metallic Fe in steam can be kept... Kinetics of the reduction of wüstite by hydrogen and carbon monoxide for the chemical looping production of hydrogen Wen Liu a,n, Jin Yang Lim b, Marco A. Saucedo a, Allan N. Hayhurst b, Stuart A. Scott a, J.S. Dennis b a Department of Engineering...

Liu, Wen; Lim, Jin Yang; Saucedo, Marco A.; Hayhurst, Allan N.; Scott, Stuart A.; Dennis, J. S.

2014-08-13T23:59:59.000Z

265

Method for refreshing a non-volatile memory  

DOE Patents [OSTI]

A non-volatile memory and a method of refreshing a memory are described. The method includes allowing an external system to control refreshing operations within the memory. The memory may generate a refresh request signal and transmit the refresh request signal to the external system. When the external system finds an available time to process the refresh request, the external system acknowledges the refresh request and transmits a refresh acknowledge signal to the memory. The memory may also comprise a page register for reading and rewriting a data state back to the memory. The page register may comprise latches in lieu of supplemental non-volatile storage elements, thereby conserving real estate within the memory.

Riekels, James E. (New Hope, MN); Schlesinger, Samuel (Aventura, FL)

2008-11-04T23:59:59.000Z

266

Comments on Americium Volatilization during Fuel Fabrication for Fast Reactors  

SciTech Connect (OSTI)

The physical processes relevant to the fabrication of metallic and ceramic nuclear fuels are analyzed, with attention to recycling of fuels containing U, Pu, and minor volatile actinides for the use in fast reactors. This analysis is relevant to the development of a process model that can be used for the numerical simulation and prediction of the spatial distribution of composition in the fuel, an important factor in fuel performance.

Sabau, Adrian S [ORNL; Ohriner, Evan Keith [ORNL

2008-01-01T23:59:59.000Z

267

New, improved equation solves for volatile oil, condensate reserves  

SciTech Connect (OSTI)

A new generalized material-balance equation (GMBE) can be applied to the full range of reservoir fluids, including volatile oil and gas condensate. The GMBE replaces the nearly 60-year-old conventional material-balance equation (CMBE). Material balance methods are routinely used by petroleum engineers to estimate reserves. The so-called straight-line methods are the most common. Two of the most popular are: P/z-plot for estimating gas reserves in a dry-gas reservoir; and Havlena and Odeh method for estimating original oil-in-place (N) and original gas-in-place (G) in a black-oil reservoir. A major shortcoming of these and other straight-line methods is that none apply to the full range of reservoir fluids and very few, if any, deal satisfactorily with volatile oil and rich gas condensate. Also, the limits of the methods are not well defined. As drilling goes deeper and more volatile oil and gas-condensate reservoirs are discovered, there is a growing need for a general straight-line method to estimate N and G. For the GMBE, no restrictions are placed on the initial fluid compositions.

Walsh, M.P. (Petroleum Recovery Research Inst., Austin, TX (United States))

1994-08-22T23:59:59.000Z

268

Position Paper on Practicable Performance Criteria for the Removal Efficiency of Volatile Radionuclides  

SciTech Connect (OSTI)

As a result of fuel reprocessing, volatile radionuclides may be released from the facility stack if no processes are put in place to remove them. The radionuclides that are of concern in this document are 3H, 14C, 85Kr, and 129I. The question we attempted to answer is how efficient must this removal process be for each of these radionuclides? To answer this question, we examined the three regulations that may impact the degree to which these radionuclides must be reduced before process gases can be released from the facility. These regulations are 40 CFR 61 (EPA 2010a), 40 CFR 190(EPA 2010b), and 10 CFR 20 (NRC 2012). These regulations apply to the total radionuclide release and to a particular organ - the thyroid. Because these doses can be divided amongst all the radionuclides in different ways and even within the four radionuclides in question, we provided several cases. We first looked at the inventories for these radionuclides for three fuel types (PWR UOX, PWR MOX, and AHTGR), several burn-up values, and time out of reactor extending to 200 y. We calculated doses to the maximum exposed individual (MEI) with the EPA code CAP-88 (Rosnick 1992). Finally, we looked at two dose cases. Allocating all of the allowable dose to be used by the volatile radionuclides is one case, but, perhaps, unrealistic. In lieu of this, we arbitrarily selected a value of 10% of the allowable dose to be assigned to the volatile radionuclides. We calculated the required decontamination factors (DFs) for both of these cases, including the case for the thyroid dose for which 14C and 129I were the main contributors. With respect to 129I doses, we found that the highest dose was calculated with iodine as a fine particulate. The dose scaled as the fraction of the total 129I that was particulate. Therefore, we assumed for all of our calculations that 100% of the 129I was particulate and allow the user of the results given here to scale our calculated doses to their needs.

R. T. Jubin; N. Soelberg; D. M. Strachan

2012-03-01T23:59:59.000Z

269

ALDEHYDE AND OTHER VOLATILE ORGANIC CHEMICAL EMISSIONS IN FOUR FEMA TEMPORARY HOUSING UNITS – FINAL REPORT  

E-Print Network [OSTI]

Composite Wood Products, California Air Resources Board.in Air and Emission Rates from Wood Products Using a LargeComposite Wood Products, California Air Resources Board.

Maddalena, Randy L.

2008-01-01T23:59:59.000Z

270

Impacts of nitrogen fertilization on volatile organic compound emissions from decomposing plant litter  

E-Print Network [OSTI]

decomposing litter from 12 plant species over 125 days, measuring both CO2 and VOC emissions throughout with C emissions as VOCs ranging from 0% to 88% of C emissions as CO2. Methanol was the dominant VOC was occasionally large enough to account for the increased CO2 emissions on a per unit C basis, suggesting that N

Fierer, Noah

271

Identifying Sources of Volatile Organic Compounds and Aldehydes in a High Performance Building  

E-Print Network [OSTI]

Efficiency and Renewable Energy, Building Technologiesand Renewable Energy, Office of Building Technology, State,

Ortiz, Anna C.

2010-01-01T23:59:59.000Z

272

Temperature dependence of volatile organic compound evaporative emissions from motor vehicles  

E-Print Network [OSTI]

gasoline samples collected at Sacramento area service stations. Vapor-liquid equilibrium relationships were summer 2001. Additional gasoline- related VOC emissions not shown in Figure 1 occur at service stations gasoline permeation through rubber and plastic components of the fuel system. [3] EMFAC [California Air

Silver, Whendee

273

In-situ remediation system for volatile organic compounds with deep recharge mechanism  

DOE Patents [OSTI]

A method and apparatus for the treatment and remediation of a contaminated aquifer in the presence of an uncontaminated aquifer at a different hydraulic potential. The apparatus consists of a wellbore inserted through a first aquifer and into a second aquifer, an inner cylinder within the wellbore is supported and sealed to the wellbore to prevent communication between the two aquifers. Air injection is used to sparge the liquid having the higher static water level and, to airlift it to a height whereby it spills into the inner cylinder. The second treatment area provides treatment in the form of aeration or treatment with a material. Vapor stripped in sparging is vented to the atmosphere. Treated water is returned to the aquifer having the lower hydraulic potential.

Jackson, Jr., Dennis G. (Augusta, GA); Looney, Brian B. (Aiken, SC); Nichols, Ralph L. (Augusta, SC); Phifer, Mark A. (Augusta, SC)

2001-01-01T23:59:59.000Z

274

Flux Measurements of Volatile Organic Compounds from an Urban Tower Platform  

E-Print Network [OSTI]

) and observe an integrated effect from what is called an upwind footprint area. Previous such studies have been limited to a few cities: Nemitz et al. (2002) and Dorsey et al. (2002) measured particle and CO 2 fluxes above the city of Edinburgh, UK, while M... intercomparison tests ..................................... 28 2.5.2. Quantification............................................................................. 30 2.5.3. Footprint analysis...

Park, Chang Hyoun

2011-08-08T23:59:59.000Z

275

Vehicular emission of volatile organic compounds (VOCs) from a tunnel study in Hong Kong  

E-Print Network [OSTI]

2004. Haszpra, L. and Szilagyi, I. : Non-methane hydrocarbonet al. , 1990; Haszpra and Szilagyi, 1994; Gertler et al. ,

2009-01-01T23:59:59.000Z

276

Impacts of herbaceous bioenergy crops on atmospheric volatile organic composition and potential consequences  

E-Print Network [OSTI]

mandate, and bioenergy is at the center of attention as a viable alternative for fossil fuels. However of atmospheric particulates, and interactions between plants and arthropods. Our data and projections indicate

DeLucia, Evan H.

277

Hybrid membranes and their use in volatile organic compound/air separations  

E-Print Network [OSTI]

of membrane. This housing is equipped with a gasket seal between the high and low pressure sides ol tbe membrane. While the feed/retentate side of the membrane is held at 20-30 in HtO above atmospheric pressure, the permeate side is held at approximately...

Krohn, John Eric

2001-01-01T23:59:59.000Z

278

A study of the tropospheric oxidation of volatile organic compounds using chemical ionization mass spectrometry  

E-Print Network [OSTI]

The mechanisms and kinetics of reactions important to the troposphere have been investigated using a high pressure, turbulent, discharge-flow technique coupled to a chemical ionization mass spectrometer. The ability to ...

Broekhuizen, Keith Edward, 1974-

2002-01-01T23:59:59.000Z

279

Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area  

E-Print Network [OSTI]

and dispersion of a Mexico City pollution out- flow eventon air pollution in the Mexico City Metropolitan Area,pollution transport during the MILAGRO-2006 campaign: a case study of a major Mexico

2010-01-01T23:59:59.000Z

280

Adsorption and desorption of binary mixtures of volatile organic contaminants on soil  

E-Print Network [OSTI]

, the potential theory and the ideal adsorbed solution theory for mixture adsorption were also evaluated for prediction of the experimental results for binary adsorption. All models failed for prediction of the BET type III isotherms when methanol was present...

Guo, Yang

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Southern California Edison's (SCE) Research Program for Industrial Volatile Organic Compound (VOC) Emissions Control  

E-Print Network [OSTI]

. Process Descriptions One of the polystyrene foam plants uses pentane as a blowing agent in the manufacturing process. while the other plant uses butane. Under the provisions, of AQMD Rule 1175, these plants will be I required to control 90 percent... by spray painting subject to AQ Rule 1124. Process Descriptions One of the polystyrene foam plants uses pentane as a blowing agent in the manufacturing process, while the other plant uses butane. Under the provisions of AQMD Rule 1175, these plants...

Sung, R. D.; Cascone, R.; Reese, J.

282

Emissions of volatile organic compounds inferred from airborne flux measurements over a megacity  

E-Print Network [OSTI]

methyl-tertiary-butyl- ether (MTBE) and the biomass burningfrom all source categories. MTBE is a gasoline additive andwith the fuel tracer MTBE (e.g. 0.82 for MTBE/benzene).

Karl, T.; Apel, E.; Hodzic, A.; Riemer, D. D; Blake, D. R; Wiedinmyer, C.

2009-01-01T23:59:59.000Z

283

Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area  

E-Print Network [OSTI]

Methanol Ethanol Acetone MEK MTBE CO Methane UCI UCI TOGA/methyl tertiary butyl ether (MTBE), and toluene all ratioedthe observed decay. For MTBE, also a species that is not

2010-01-01T23:59:59.000Z

284

Sampling Throughout The Hydrologic Cycle To Characterize Sources Of Volatile Organic  

E-Print Network [OSTI]

ether (MTBE) are sufficiently high to cause detection in ground water, whereas atmospheric that point sources of MTBE, such as spills or infiltration of urban runoff, are also prevalent are widespread. MTBE is detected less frequently in observation wells that tap 10- to 15-year-old ground water

Torgersen, Christian

285

QUANTIFYING NON-POINT SOURCES OF VOLATILE ORGANIC COMPOUNDS IN STORMWATER FROM A PARKING LOT  

E-Print Network [OSTI]

-butyl ether (MTBE) on urban particles indicates a site- specific interaction between MTBE and a particulate is a possible source only for the gasoline oxygenate methyl tert-butyl ether (MTBE). Lopes and Bender (1998

286

Removal of volatile organic compounds from polluted air in a reverse flow reactor: An experimental study  

SciTech Connect (OSTI)

An experimental study of the reverse flow reactor for the purification of contaminated air has been carried out. An experimental reactor with an inner diameter of 0.145 m has been constructed. It almost completely reached the goal of an adiabatically operating system. The influence of several operating parameters such as gas velocity, cycle period, chemical character, and concentration of the pollutants and reactor pressure are discussed. The reactor could be operated autothermally provided that the inlet concentrations were sufficiently high. If a mixture of contaminants is fed to the reactor, it might be necessary to increase the total hydrocarbon concentration to assure an autothermal process. Increasing the reactor pressure will hardly change the axial temperature profiles, if the mass flux is kept constant. Increasing the mass flow rate will lead to a higher plateau temperature. Not only the reactor behavior at fixed operating conditions, but also the response of the reactor toward variations in inlet conditions is reported.

Beld, B. van de; Borman, R.A.; Derkx, O.R.; Woezik, B.A.A. van; Westerterp, K.R. (Univ. of Twente, Enschede (Netherlands). Dept. of Chemical Engineering)

1994-12-01T23:59:59.000Z

287

Methyl halide and biogenic volatile organic compound fluxes from perennial bioenergy crops and annual arable crops   

E-Print Network [OSTI]

The depletion of fossil fuel resources, pollution concerns and the challenge of energy security are driving the search for renewable energy sources. The use of lignocellulosic plant biomass as an energy source is increasing ...

Morrison, Eilidh Christina

2013-11-28T23:59:59.000Z

288

Removal of hydrophobic Volatile Organic Compounds1 in an integrated process coupling Absorption and2  

E-Print Network [OSTI]

technology like photochemical oxidation shows high efficiency70 but is also high energy-consuming; moreover processes involve water as absorbent, they appear not always really efficient for the treatment of24 of the process, hydrophobic VOC27 absorption in a gas-liquid contactor, and biodegradation in the TPPB. VOC

Boyer, Edmond

289

Impact of California Reformulated Gasoline on Motor Vehicle Emissions. 2. Volatile Organic Compound Speciation and Reactivity  

E-Print Network [OSTI]

California Reformulated Gasoline On Motor Vehicle EmissionsCalifornia Reformulated Gasoline on Motor Vehicle EmmissionsBerkeley Environ. ScLTechnoL gasoline Impact California of

Kirchstetter, Thomas; Singer, Brett; Harley, Robert

1999-01-01T23:59:59.000Z

290

Factors Affecting Indoor Air Concentrations of Volatile Organic Compounds at a Site of Subsurface Gasoline Contamination  

E-Print Network [OSTI]

AT A SITE OF SUBSURFACE GASOLINE CONTAMINATION Marc L.A T A SITE OF SUBSURFACE GASOLINE CONTAMINATION Marc L.a site contaminated with gasoline. Although the high V O C

Fischer, M.L.

2011-01-01T23:59:59.000Z

291

E-Print Network 3.0 - ambient volatile organic Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

- Department of Chemistry and Biochemistry, University of Colorado at Boulder Collection: Chemistry ; Environmental Sciences and Ecology 55 Generating Methane Gas From Manure...

292

Emissions of volatile organic compounds inferred from airborne flux measurements over a megacity  

E-Print Network [OSTI]

mixing ratios and vertical wind speed plotted as a functionPanel: De-trended vertical wind speed (blue) and toluene (between toluene and vertical wind speed. Dashed curve

Karl, T.; Apel, E.; Hodzic, A.; Riemer, D. D; Blake, D. R; Wiedinmyer, C.

2009-01-01T23:59:59.000Z

293

Quantitative and qualitative sensing techniques for biogenic volatile organic compounds and their oxidation products  

E-Print Network [OSTI]

M. Porter, H. Fuelberg, J. Halland and D. B. Millet, J.Porter, H. Fuelberg, J. Halland, T. H. Bertram, R. C. Cohen,

Kim, Saewung; Guenther, Alex; Apel, Eric

2013-01-01T23:59:59.000Z

294

Emissions of volatile organic compounds inferred from airborne flux measurements over a megacity  

E-Print Network [OSTI]

P. R. , and Hao, W. M. : Emissions from forest fires nearM. O. and Merlet, P. : Emission of trace gases and aerosolsW. : Automo- bile Emissions of Acetonitrile: Assessment of

Karl, T.; Apel, E.; Hodzic, A.; Riemer, D. D; Blake, D. R; Wiedinmyer, C.

2009-01-01T23:59:59.000Z

295

In Vitro Genotoxicity of Particulate and Semi-Volatile Organic Compound  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensionalthe U.S. Improving Fan System Performance aEnginesInEnergyExhaust

296

NMED COMMENTS ITEM 3 REVISE VOLATILE ORGANIC COMPOUND (VOC) TARGET ANALYTE LIST  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Opticalhttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gifAEnergy2014 SolidGold foil| Infrastructure

297

Three-Dimensional Simulation of Volatile Organic Compound Mass Flux from  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layered NbS2 andThe1A: HandlingJefferson Lab ThreeMonkeysthe

298

Detecting Volatile Organic Compounds from Orbit J. J. Harrison & P. F. Bernath  

E-Print Network [OSTI]

ethane retrievals are currently being optimised by updating and improving the microwindow set. Propane cross sections have also been determined from spectra recorded at the MSF. Propane 215 K Propane Q

299

Vehicular emission of volatile organic compounds (VOCs) from a tunnel study in Hong Kong  

E-Print Network [OSTI]

ethene toluene n-butane propane i-pentane i-butane propeneethene, toluene, n-butane, propane and i-pentane. These fiveVOCs emitted. The high propane and n-butane emissions were

2009-01-01T23:59:59.000Z

300

Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area  

E-Print Network [OSTI]

C-130 T0 T1 G1 Ethane Propane i-Butane n-Butane i-Pentane n-ppbv) Ethane Ethene Ethyne Propane Propene i-Butane n-Butanee.g. , ethane, ethene, propane, propane, methanol, ethanol,

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Process for the production of hydrogen and carbonyl sulfide from hydrogen sulfide and carbon monoxide using a metal boride, nitride, carbide and/or silicide catalyst  

SciTech Connect (OSTI)

Hydrogen and carbonyl sulfide are produced by a process comprising contacting gaseous hydrogen sulfide with gaseous carbon monoxide in the presence of a metal boride, carbide, nitride and/or silicide catalyst, such as titanium carbide, vanadium boride, manganese nitride or molybdenum silicide.

McGuiggan, M.F.; Kuch, P.L.

1984-05-08T23:59:59.000Z

302

J. Phys. Chem. 1994, 98, 11213-11219 11213 Vibrational Dynamics of Carbon Monoxide at the Active Site of Myoglobin: Picosecond  

E-Print Network [OSTI]

J. Phys. Chem. 1994, 98, 11213-11219 11213 Vibrational Dynamics of Carbon Monoxide at the Active Physics Laboratory, Stanford University, Stanford, Califomia 94305 Received: April 27, 1994: In Final Form at Urbana-Champaign. Deparlment of Chemistry, Sfanford University. Hansen ExperimentaJ Physics Laboratory

Fayer, Michael D.

303

Interaction of copper oxides with reaction medium in heterogeneous catalytic oxidation of carbon monoxide by molecular oxygen. IV. IR spectroscopic study of carbon monoxide interaction with copper oxide surface  

SciTech Connect (OSTI)

An IR spectroscopic study has been made of the interaction of CO with CuO prepared in different ways, and the interaction of O/sub 2/ with carbon monoxide preadsorbed on CuO. A number of Cu/sup +/CO surface complexes have been detected (2114-2148 cm/sup -1/) with a heat of adsorption about 79.5-180 kJ/mole. From an analysis of the nature of these complexes, we have evaluated the processes taking place on the CuO surface when it interacts with CO and have compared the properties of massive CuO with those of CuO on oxide supports. The data are interpreted on the assumption that extended defects - dislocations - exist and play an important role, determining to a considerable degree the properties of the massive CuO in the reaction of CO oxidation.

Lokhov, Y.A.; Popovskii, V.V.; Sadykov, V.A.; Tikhov, S.F.

1985-08-01T23:59:59.000Z

304

Improvement of SOFC Electrodes through Catalyst Infiltration & Control of Cr Volatilization from FeCr Components  

SciTech Connect (OSTI)

This presentation discusses the improvement of SOFC electrodes through catalyst infiltration and control of Cr volatilization from FeCr components.

Visco, S.J.; Jacobson, C.; Kurokawa, H.; Sholklapper, T.; Lu, C.; De Jonghe, L.

2005-01-28T23:59:59.000Z

305

Oil consumption, pollutant emission, oil proce volatility and economic activities in selected Asian Developing Economies.  

E-Print Network [OSTI]

??It is now well established in the literature that oil consumption, oil price shocks, and oil price volatility may impact the economic activities negatively. Studies… (more)

Rafiq, Shuddhasattwa

2009-01-01T23:59:59.000Z

306

Stochastic volatility models with persistent latent factors: theory and its applications to asset prices  

E-Print Network [OSTI]

consider the nonlinear nonstationary state-space model given by yt = radicalbig f(xt,?) ut, xt+1 = ?xt +vt+1,(2.1) where I make the following assumptions: Assumption 1: The volatility function is given by (2.2) f(xt,?) = µ+ ?1+exp(??(x t ??)) , where ? = (µ.... Assumption 2: (xt) is a scalar latent volatility factor and |?| ? 1, I describe the volatility factor, (xt) explicitly in the transition equation because I am interested in the linkage between it and macro economic fundamentals. I assume that this volatility...

Lee, Hyoung Il

2008-10-10T23:59:59.000Z

307

E-Print Network 3.0 - acidos grasos volatiles Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

signal that triggers the release of plant volatiles; one or more elicitors from the oral secretion allow Source: Par, Paul W. - Department of Chemistry and Biochemistry, Texas...

308

Volatilities of Actinide and Lanthanide N,NDimethylaminodiboranate Chemical Vapor Deposition  

E-Print Network [OSTI]

,§ Gregory S. Girolami,*,§ Christopher J. Cramer, and Laura Gagliardi*, Department of Chemistry volatile forms during sublimation. INTRODUCTION Lanthanide-containing materials, such as lanthanide oxides

Girolami, Gregory S.

309

1 Emerging versus developed volatility indexes. The comparison of VIW20 and VIX index.1  

E-Print Network [OSTI]

Modeling of financial markets volatility is one of the most significant issues of contemporary finance, especially while analyzing high-frequency data. Accurate quantification and forecast of volatility are of immense importance in risk management (VaR models, stress testing and worst case scenario), models of capital market and options valuation techniques. What we show in this paper is the methodology for calculating volatility index for Polish capital market (VIW20 – index anticipating expected volatility of WIG20 index). The methods presented are based on VIX index (VIX White Paper, 2003) and enriched with necessary modifications corresponding with the character of Polish options market. Quoted on CBOE, VIX index is currently known as the best measure of capital investment risk perfectly illustrating the level of fear and emotions of market participants. The conception of volatility index is based on combination of realized volatility and implied volatility which, using methodology of Derman et al. (1999) and reconstructing volatility surface, reflects both volatility smile as well as its term structure. The research is carried out using high-frequency data (i.e. tick data) for index options on WIG20 index for the period November 2003- May 2007, in other words, starting with the introduction of options by Warsaw Stock

Robert ?lepaczuk; Grzegorz Zakrzewski

310

Field measurements of ammonia volatilization from surface applications of nitrogen fertilizers to a calcareous soil  

E-Print Network [OSTI]

to measure volatilized NH3 in the labora- tory. A) Vacuum pump, B) Boric acid trap to collect volatilized NH ~ C) NH3 volatilization chamber, D) Trkp to re- move NH3 from incoming air . . . . . . . . . . . 21 A schematic of the apparatus used to make... direct measurements of NH losses in the field. A) Vacuum pum), B) Boric acid trap, C) NH volatilization chamber, consisting of metal cylinder and plexi- glass top The cumulative NH losses over time for four rates of' a)plication of urea...

Hargrove, W. L

1977-01-01T23:59:59.000Z

311

Resilience of gas-phase anharmonicity in the vibrational response of adsorbed carbon monoxide and breakdown under electrical conditions  

E-Print Network [OSTI]

In surface catalysis, the adsorption of carbon monoxide on transition-metal electrodes represents the prototype of strong chemisorption. Notwithstanding significant changes in the molecular orbitals of adsorbed CO, spectroscopic experiments highlight a close correlation between the adsorbate stretching frequency and equilibrium bond length for a wide range of adsorption geometries and substrate compositions. In this work, we study the origins of this correlation, commonly known as Badger's rule, by deconvoluting and examining contributions from the adsorption environment to the intramolecular potential using first-principles calculations. Noting that intramolecular anharmonicity is preserved upon CO chemisorption, we show that Badger's rule for adsorbed CO can be expressed solely in terms of the tabulated Herzberg spectroscopic constants of isolated CO. Moreover, although it had been previously established using finite-cluster models that Badger's rule is not affected by electrical conditions, we find here th...

Dabo, Ismaila

2012-01-01T23:59:59.000Z

312

Adsorbate effects on a mixed-valence compound: Carbon monoxide chemisorption on CeIr/sub 2/  

SciTech Connect (OSTI)

We have studied the effects of stoichiometry change and CO chemisorption on the surface electronic structure of the mixed-valence compound CeIr/sub 2/. We show that the surface iridium to cerium ratio can be varied by changing sample temperature while sputtering. Carbon monoxide is found to adsorb 80% molecularly on the surface and cause a mild surface oxidation which induces a shift of electron density into available cerium f orbitals. Peaks due to the 4sigma, 1..pi.., and 5sigma CO molecular orbitals appear at different binding energies than those due to molecular CO on the pure iridium surface. This binding-energy shift as well as the high percentage of molecular CO on the surface (CO adsorption on pure cerium is completely dissociative) points toward a surface which has lost much of the elemental character of its two constituents upon compound formation.

Lindquist, J.M.; Hemminger, J.C.; Lawrence, J.

1987-10-15T23:59:59.000Z

313

Auger electron spectroscopy, electron loss spectroscopy and low energy electron diffraction of oxygen and carbon monoxide adsorption of Pd films  

SciTech Connect (OSTI)

The adsorption of oxygen and carbon monoxide at room temperature on polycrystalline and (111) monocrystalline thin films of Pd vapor deposited on mice was investigated by AES, ELS, and LEED. The results show that adsorbate coverage depends strongly on surface microstructure, composition, and topography. Polycrystalline or Cl contaminated surfaces adsorb large amounts of the gases, while flat, monocrystalline surfaces will adsorb almost none. These results are quite different from those observed earlier using sputter etched and annealed bulk single cyrstals where adsorbate superlattices formed after rather low gaseous exposures. In the present work no superlattices were observed after exposures ranging up to several thousand langmuirs. The contradictory results obtained in the two cases are attributed to probable differences in surface microtopography and microstructure.

Vook, R.W.; De Cooman, B.C.; Vankar, V.D.

1983-01-01T23:59:59.000Z

314

Remarkable catalytic activity of cobalt tetraphenylporphyrin modified on a titania for the oxidation of carbon monoxide below room temperature  

SciTech Connect (OSTI)

CoTPP on TiO/sub 2/-120s modified at 250 /sup 0/C under vacuum catalytically oxidized carbon monoxide rapidly with oxygen even at -79/sup 0/C. Its catalytic activity was incomparably higher than that of commercial Hopcalite. Comparison of its catalytic performance with those of the same catalyst or different TiO/sub 2/ supporting catalyst both evacuated at 200 /sup 0/C revealed unique features of the present catalyst in terms of its oxygen adsorption, the poisoning of adsorbed oxygen, and the insolubility of the complex in benzene. Both significant structural modification of the complex and its strong interaction with properly dehydrated TiO/sub 2/-120s brought about by evacuation at 250 /sup 0/C may induce such extraordinary activity. 14 references, 4 figures, 5 tables.

Mochida, I.; Iwai, Y.; Kamo, T.; Fujitsu, H.

1985-12-05T23:59:59.000Z

315

Adsorbate effects on a mixed-valence compound: carbon monoxide chemisorption on CeIr/sub 2/  

SciTech Connect (OSTI)

The authors studied the effects of stoichiometry change and CO chemisorption on the surface electronic structure of the mixed-valence compound CeIr/sub 2/. It is shown that the surface iridium to cerium ratio can be varied by changing sample temperature while sputtering. Carbon monoxide is found to adsorb 80% molecularly on the surface and cause a mild surface oxidation which induces a shift of electron density into available cerium f orbitals. Peaks due to the 4 sigma, 1 pi, and 5 sigma CO molecular orbitals appear at different binding energies than those due to molecular CO on the pure iridium surface. This binding-energy shift as well as the high percentage of molecular CO on the surface (CO adsorption on pure cerium is completely dissociative) points toward a surface which has lost much of the elemental character of its two constituents upon compound formation.

Lindquist, J.M.; Hemminger, J.C.

1987-10-15T23:59:59.000Z

316

Organic geochemistry and organic petrography  

SciTech Connect (OSTI)

The Vermillion Creek coals and shales contain dominantly humic organic matter originating from woody plant tissues except for one shale unit above the coals, which contains hydrogen-rich kerogen that is mostly remains of filamentous algae, of likely lacustrine origin. The coals have two unusual features - very low inertinite content and high sulfur content compared to mined western coals. However, neither of these features points to the limnic setting reported for the Vermillion Creek sequence. The vitrinite reflectance of Vermillion Creek shales is markedly lower than that of the coals and is inversely proportional to the H/C ratio of the shales. Rock-Eval pyrolysis results, analyses of H, C, and N, petrographic observations, isotope composition of organic carbon, and amounts and compositions of the CHCl/sub 3/-extractable organic matter all suggest mixtures of two types of organic matter in the Vermillion Creek coals and clay shales: (1) isotopically heavy, hydrogen-deficient, terrestrial organic matter, as was found in the coals, and (2) isotopically light, hydrogen-rich organic matter similar to that found in one of the clay-shale samples. The different compositions of the Vermillion Creek coal, the unnamed Williams Fork Formation coals, and coals from the Middle Pennsylvanian Marmaton and Cherokee Groups are apparently caused by differences in original plant composition, alteration of organic matter related to different pH conditions of the peat swamps, and slightly different organic maturation levels.

Bostick, N.H.; Hatch, J.R.; Daws, T.A.; Love, A.H.; Lubeck, S.C.M.; Threlkeld, C.N.

1987-01-01T23:59:59.000Z

317

Volatile Loss and Classification of Kuiper Belt Objects  

E-Print Network [OSTI]

Observations indicate that some of the largest Kuiper Belt Objects (KBOs) have retained volatiles in the gas phase, which implies the presence of an atmosphere that can affect their reflectance spectra and thermal balance. Volatile escape rates driven by solar heating of the surface were estimated by Schaller and Brown (2007) (SB) and Levi and Podolak (2009)(LP) using Jeans escape from the surface and a hydrodynamic model respectively. Based on recent molecular kinetic simulations these rates can be hugely in error (e.g., a factor of $\\sim 10^{16}$ for the SB estimate for Pluto). In this paper we estimate the loss of primordial N$_2$ for several large KBOs guided by recent molecular kinetic simulations of escape due to solar heating of the surface and due to UV/EUV heating of the upper atmosphere. For the latter we extrapolate simulations of escape from Pluto (Erwin et al. 2013) using the energy limited escape model recently validated for the KBOs of interest by molecular kinetic simulations (Johnson et al. 2...

Johnson, R E; Young, L A; Volkov, A N; Schmidt, C

2015-01-01T23:59:59.000Z

318

Organic Superconductors  

SciTech Connect (OSTI)

Intense magnetic fields are an essential tool for understanding layered superconductors. Fundamental electronic properties of organic superconductors are revealed in intense (60 tesla) magnetic fields. Properties such as the topology of the Fermi surface and the nature of the superconducting order parameter are revealed. With modest maximum critical temperatures~13K the charge transfer salt organic superconductors prove to be incredibly valuable materials as their electronically clean nature and layered (highly anisotropic) structures yield insights to the high temperature superconductors. Observation of de Haas-van Alphen and Shubnikov-de Haas quantum oscillatory phenomena, magnetic field induced superconductivity and re-entrant superconductivity are some of the physical phenomena observed in the charge transfer organic superconductors. In this talk, I will discuss the nature of organic superconductors and give an overview of the generation of intense magnetic fields; from the 60 tesla millisecond duration to the extreme 1000 tesla microsecond pulsed magnetic fields.

Charles Mielke

2009-02-27T23:59:59.000Z

319

Volatility-- a statistical comparison between the secondary and primary home markets : the lower Cape's volatility and average return compared to three Boston area primary markets  

E-Print Network [OSTI]

This thesis attempts to analyze the long-standing perception that the secondary home market, homes built in and around vacation areas, is more volatile than the primary home market. For the first time, this study measures ...

Knight, Craig, 1971-

2003-01-01T23:59:59.000Z

320

Volatility Forecasts in Financial Time Series with HMM-GARCH Models  

E-Print Network [OSTI]

Volatility Forecasts in Financial Time Series with HMM-GARCH Models Xiong-Fei Zhuang and Lai {xfzhuang,lwchan}@cse.cuhk.edu.hk Abstract. Nowadays many researchers use GARCH models to generate of the two parameters G1 and A1[1], in GARCH models is usually too high. Since volatility forecasts in GARCH

Chen, Yiling

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


321

Output Growth and Its Volatility: The Gold Standard through the Great Moderation  

E-Print Network [OSTI]

of real GDP growth and some form of a generalized autoregressive conditional heteroskedasticity (GARCH GARCH or exponential GARCH (EGARCH) process, capturing the movement in volatility. The neglect persistence in the conditional volatility or integrated GARCH (IGARCH). That is, typically all persistence

Ahmad, Sajjad

322

Intra-daily variations in volatility and transaction costs in the Credit Default Swap market  

E-Print Network [OSTI]

Intra-daily variations in volatility and transaction costs in the Credit Default Swap market Andras : Credit Default Swap, Intra-daily patterns, Stochastic transaction costs, Volatility, Interdealer market on the Microstructure of Financial Markets in Hong Kong, the 2008 Credit conference in Venice, the Third Annual Risk

Del Moral , Pierre

323

A comparison of option prices under different pricing measures in a stochastic volatility model  

E-Print Network [OSTI]

A comparison of option prices under different pricing measures in a stochastic volatility model with correlation Vicky Henderson Princeton University David Hobson § University of Bath Sam Howison ¶ University option prices in an incomplete stochastic volatility model with correlation. In a general setting, we

Howison, Sam

324

Cross-Section of Option Returns and Volatility Goizueta Business School  

E-Print Network [OSTI]

compute the stock's IV by taking the average of the ATM call and put implied-volatilities. This also-section of stock option returns by constructing decile portfolios of straddles and delta-hedged calls and puts based on sorting stocks on the differ- ence between historical realized volatility and at

325

ORIGINAL ARTICLE Differential volatile emissions and salicylic acid levels from tobacco  

E-Print Network [OSTI]

pv. tabaci (Pstb), with tobacco plants resulted in a different volatile blend, consisting of MeORIGINAL ARTICLE Differential volatile emissions and salicylic acid levels from tobacco plants / Published online: 24 April 2003 Ă? Springer-Verlag 2003 Abstract Pathogen-induced plant responses include

Raina, Ramesh

326

System for loading executable code into volatile memory in a downhole tool  

DOE Patents [OSTI]

A system for loading an executable code into volatile memory in a downhole tool string component comprises a surface control unit comprising executable code. An integrated downhole network comprises data transmission elements in communication with the surface control unit and the volatile memory. The executable code, stored in the surface control unit, is not permanently stored in the downhole tool string component. In a preferred embodiment of the present invention, the downhole tool string component comprises boot memory. In another embodiment, the executable code is an operating system executable code. Preferably, the volatile memory comprises random access memory (RAM). A method for loading executable code to volatile memory in a downhole tool string component comprises sending the code from the surface control unit to a processor in the downhole tool string component over the network. A central processing unit writes the executable code in the volatile memory.

Hall, David R. (Provo, UT); Bartholomew, David B. (Springville, UT); Johnson, Monte L. (Orem, UT)

2007-09-25T23:59:59.000Z

327

Using futures prices to filter short-term volatility and recover a latent, long-term price series for oil  

E-Print Network [OSTI]

Oil prices are very volatile. But much of this volatility seems to reflect short-term,transitory factors that may have little or no influence on the price in the long run. Many major investment decisions should be guided ...

Herce, Miguel Angel

2006-01-01T23:59:59.000Z

328

Summary Report on the Volatile Radionuclide and Immobilization Research for FY2011 at PNNL  

SciTech Connect (OSTI)

The materials development summarized here is in support of the Waste Forms campaign, Volatile Radionuclide task. Specifically, materials are being developed for the removal and immobilization of iodine and krypton, specifically 129I and 85Kr. During FY 2011, aerogel materials were investigated for removal and immobilization of 129I. Two aerogel formulations were investigated, one based on silica aerogels and the second on chalcogen-based aerogels (i.e., chalcogels). A silica aerogel was tested at ORNL for total I2 sorption capacity. It was determined to have 48 mass% capacity while having little physisorbed I2 (I2 not taken up in the aerogel pores). For 85Kr, metal organic framework (MOF) structures were investigated and a new MOF with about 8 mass% capacity for Xe and Kr. The selectivity can be changed from Xe > Kr to Xe < Kr simply by lowering the temperature below 0 C. A patent disclosure has been filed. Lastly, silicon carbide (SiC) was loaded with Kr. The diffusion of Kr in SiC was found to be less than detectable at 500 C.

Strachan, Denis M.; Chun, Jaehun; Matyas, Josef; Lepry, William C.; Riley, Brian J.; Ryan, Joseph V.; Thallapally, Praveen K.

2011-09-01T23:59:59.000Z

329

Prediction of risk-based screening levels for infiltration of volatile subsurface contaminants into buildings  

SciTech Connect (OSTI)

A Risk-Based Corrective Action (RBCA) approach is increasingly being used for the management of contaminated sites. Fundamental to this approach is the prediction of risk-based screening levels (RBSL) for operable exposure pathways. Screening level models currently used indicate that RBSLs for the indoor inhalation pathway can be significantly lower than other pathways typically considered. This paper presents the results of a screening level spreadsheet model used to predict human health risks resulting from infiltration of volatile organic compounds (VOCs) into buildings. The model was developed to derive RBSLs for soil and groundwater for possible future incorporation into the regulation of contaminated sites in British Columbia. Key features of the semi-analytical VOC infiltration model are steady-state diffusive mass transfer through soil coupled with advective and diffusive mass transfer through a cracked building floor slab or wall, source mass depletion of soil contaminants present using a mass balance approach, and the capability to incorporate multi-component chemical partitioning for soils containing non-aqueous phase liquid (NAPL). The critical factors affecting VOC infiltration and resulting health risks are presented.

Hers, I.; Zapf-Gilje, R.; Petrovic, S. [Golder Associates Ltd., Burnaby, British Columbia (Canada); Macfarlane, M.; McLenehan, R. [British Columbia Ministry of Environment, Lands and Parks, Victoria, British Columbia (Canada)

1997-09-01T23:59:59.000Z

330

In-Situ Contained And Of Volatile Soil Contaminants  

DOE Patents [OSTI]

The invention relates to a novel approach to containing and removing toxic waste from a subsurface environment. More specifically the present invention relates to a system for containing and removing volatile toxic chemicals from a subsurface environment using differences in surface and subsurface pressures. The present embodiment generally comprises a deep well, a horizontal tube, at least one injection well, at least one extraction well and a means for containing the waste within the waste zone (in-situ barrier). During operation the deep well air at the bottom of well (which is at a high pressure relative to the land surface as well as relative to the air in the contaminated soil) flows upward through the deep well (or deep well tube). This stream of deep well air is directed into the horizontal tube, down through the injection tube(s) (injection well(s)) and into the contaminate plume where it enhances volatization and/or removal of the contaminants.

Varvel, Mark Darrell (Idaho Falls, ID)

2005-12-27T23:59:59.000Z

331

In-Situ Containment and Extraction of Volatile Soil Contaminants  

DOE Patents [OSTI]

The invention relates to a novel approach to containing and removing toxic waste from a subsurface environment. More specifically the present invention relates to a system for containing and removing volatile toxic chemicals from a subsurface environment using differences in surface and subsurface pressures. The present embodiment generally comprises a deep well, a horizontal tube, at least one injection well, at least one extraction well and a means for containing the waste within the waste zone (in-situ barrier). During operation the deep well air at the bottom of well (which is at a high pressure relative to the land surface as well as relative to the air in the contaminated soil) flows upward through the deep well (or deep well tube). This stream of deep well air is directed into the horizontal tube, down through the injection tube(s) (injection well(s)) and into the contaminate plume where it enhances volatization and/or removal of the contaminants.

Varvel, Mark Darrell

2005-12-27T23:59:59.000Z

332

Relationship between Compost Stability and Extractable Organic Carbon L. Wu and L. Q. Ma*  

E-Print Network [OSTI]

OH-extractable organic carbon (OC) containsfor a better compost quality control and utilization efficiency. The objective found that the OC contentOC concentration was influenced by the total volatile solids and de- of the core HA relative to total dry mass increased whilecreased with curing time for compost with a high

Ma, Lena

333

Organic sponges for cost-effective CVOC abatement. Final report, September 1992--April 1994  

SciTech Connect (OSTI)

Air contaminated with CVOCs (chlorinated volatile organic compounds) arise from air stripping of ground water or from soil and dual phase vapor extraction. A research program was undertaken to develop sorbents better than activated carbon for remediation. Two such sorbents were found: Dow`s XUS polymer and Rohm and Haas` Ambersorb 563 (carbonaceous). Opportunities exist to further develop sorption and biodegradation technologies.

Flanagan, W.P.; Grade, M.M.; Horney, D.P.; Mackenzie, P.D.; Salvo, J.J.; Sivavec, T.M.; Stephens, M.L.

1994-07-01T23:59:59.000Z

334

A Big Data Approach to Analyzing Market Volatility  

SciTech Connect (OSTI)

Understanding the microstructure of the financial market requires the processing of a vast amount of data related to individual trades, and sometimes even multiple levels of quotes. Analyzing such a large volume of data requires tremendous computing power that is not easily available to financial academics and regulators. Fortunately, public funded High Performance Computing (HPC) power is widely available at the National Laboratories in the US. In this paper we demonstrate that the HPC resource and the techniques for data-intensive sciences can be used to greatly accelerate the computation of an early warning indicator called Volume-synchronized Probability of Informed trading (VPIN). The test data used in this study contains five and a half year?s worth of trading data for about 100 most liquid futures contracts, includes about 3 billion trades, and takes 140GB as text files. By using (1) a more efficient file format for storing the trading records, (2) more effective data structures and algorithms, and (3) parallelizing the computations, we are able to explore 16,000 different ways of computing VPIN in less than 20 hours on a 32-core IBM DataPlex machine. Our test demonstrates that a modest computer is sufficient to monitor a vast number of trading activities in real-time ? an ability that could be valuable to regulators. Our test results also confirm that VPIN is a strong predictor of liquidity-induced volatility. With appropriate parameter choices, the false positive rates are about 7percent averaged over all the futures contracts in the test data set. More specifically, when VPIN values rise above a threshold (CDF > 0.99), the volatility in the subsequent time windows is higher than the average in 93percent of the cases.

Wu, Kesheng; Bethel, E. Wes; Gu, Ming; Leinweber, David; Ruebel, Oliver

2013-06-05T23:59:59.000Z

335

Bayesian analysis of GARCH and stochastic volatility: modeling leverage, jumps and heavy-tails for financial time series  

E-Print Network [OSTI]

Bayesian analysis of GARCH and stochastic volatility: modeling leverage, jumps and heavy for two broad major classes of varying volatility model, GARCH and stochastic volatility (SV) models-t errors yields the best performance among the competing models on the return data. Key words: GARCH, Heavy

Wolpert, Robert L

336

States of cobalt and iron in catalysts supported in TiO{sub 2} from data of diffuse reflectance IR spectra of adsorbed carbon monoxide  

SciTech Connect (OSTI)

The variations in the oxidation states of cobalt and iron atoms in pure and mixed Co- and Fe-containing catalysts supported on TiO{sub 2} as a function of the conditions in which the catalysts were prepared and preliminarily treated were studied by analysis of the IR spectra of carbon monoxide adsorbed on these catalysts. A mutual influence of the components was discovered; iron was found to promote reduction of cobalt.

Davydov, A.A. [G.K. Boreskov Inst. of Catalysis, Novosibirsk (Russian Federation); Coville, N. [Univ. of the Wiswatersrand Wits, Johannesburg (South Africa)

1995-10-01T23:59:59.000Z

337

Relation between surface adsorption states and emf in a solid electrolyte concentration cell during carbon monoxide oxidation on platinum studied by local current measurement  

SciTech Connect (OSTI)

The importance of measuring adsorption during surface catalysis has been emphasized often. This is true for the oxidation of carbon monoxide on a platinum surface. Surface adsorption states during the reaction under steady states can be learned from electromotive force (emf) measurement with appropriate assumptions. Two mechanisms for emf generation have been proposed, one is that only oxygen activity generates emf, the other is that both oxygen and CO adsorption generates emf.

Okamoto, H.; Kawamura, G.; Kudo, T.

1984-04-01T23:59:59.000Z

338

Effect of the type of carrier on the properties of cobalt catalysts in the synthesis of aliphatic hydrocarbons from carbon monoxide and hydrogen  

SciTech Connect (OSTI)

The properties of catalysts used in the synthesis of hydrocarbons from CO and H/sub 2/ are determined to a significant degree by the carriers used in their preparation. This paper deals with a study of the effect of the type of carrier on the properties of cobalt-based catalysts in the synthesis of aliphatic hydrocarbons from CO and H/sub 2/. Co catalysts that are active in the synthesis of hydrocarbons from CO and H/sub 2/ are those on which the adsorption of H/sub 2/ exceeds 3.10/sup -2/ mmole/g Co and the adsorptin of carbon monoxide exceeds 7.10/sup -2/ mmole/g Co. Carbon monoxide and hydrogen are adsorbed on active catalysts in weakly bound forms. A mechanism is proposed for the formatin of an active center and the adsorption of carbon monoxide on Co-catalysts which includes the appearance of a partial positive charge on the cobalt atom.

Lapidus, A.L.; Jem, H.C.; Krylova, A.Y.

1983-04-10T23:59:59.000Z

339

Analytical Chemistry Laboratory (ACL) procedure compendium. Volume 4, Organic methods  

SciTech Connect (OSTI)

This interim notice covers the following: extractable organic halides in solids, total organic halides, analysis by gas chromatography/Fourier transform-infrared spectroscopy, hexadecane extracts for volatile organic compounds, GC/MS analysis of VOCs, GC/MS analysis of methanol extracts of cryogenic vapor samples, screening of semivolatile organic extracts, GPC cleanup for semivolatiles, sample preparation for GC/MS for semi-VOCs, analysis for pesticides/PCBs by GC with electron capture detection, sample preparation for pesticides/PCBs in water and soil sediment, report preparation, Florisil column cleanup for pesticide/PCBs, silica gel and acid-base partition cleanup of samples for semi-VOCs, concentrate acid wash cleanup, carbon determination in solids using Coulometrics` CO{sub 2} coulometer, determination of total carbon/total organic carbon/total inorganic carbon in radioactive liquids/soils/sludges by hot persulfate method, analysis of solids for carbonates using Coulometrics` Model 5011 coulometer, and soxhlet extraction.

Not Available

1993-08-01T23:59:59.000Z

340

Methane and carbon monoxide emissions from asphalt pavement: Measurements and estimates of their important to global budgets  

SciTech Connect (OSTI)

The authors measured emissions of methane from asphalt surfaces used in pavement for roadways. Maximum emissions were 22 mg/m{sup 2}/hr for 1- to 4-week-old pavement during maximum sunlight intensity. Emissions were much smaller at low sunlight intensity and dropped off to negligible amounts at night. Smaller emissions were observed for asphalt pavement of 2.5 to 3 years approximate age under similar conditions. Comparison measurements of carbon monoxide emissions resulted in maximum emissions of about 2.6 mg/m{sup 2}hr for 1-week-old pavement. These findings indicate that emissions of CH{sub 4} and CO are a function of both sunlight and temperature. Based on these results, methane emissions from asphalt pavement cannot be a significant source of atmospheric methane as compared to other identified methane sources. Therefore, although asphalt methane emissions are a form of fossil fuel methane, they cannot explain the relatively high fraction of {sup 14}C-depleted methane in the atmosphere.

Tyler, S.C.; Dlugokencky, E.; Zimmerman, P.R.; Cicerone, R.J. (National Center for Atmospheric Research, Boulder, CO (USA)); Lowe, D.C. (Institute of Nuclear Sciences, Lower Hutt (New Zealand))

1990-08-20T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Ethanol as Internal Standard for Quantitative Determination of Volatile Compounds in Spirit Drinks by Gas Chromatography  

E-Print Network [OSTI]

The new methodical approach of using ethanol as internal standard in gas chromatographic analysis of volatile compounds in spirit drinks in daily practice of testing laboratories is proposed. This method provides determination of volatile compounds concentrations in spirit drinks directly expressed in milligrams per liter (mg/L) of absolute alcohol according to official methods without measuring of alcohol strength of analyzed sample. The experimental demonstration of this method for determination of volatile compounds in spirit drinks by gas chromatography is described. Its validation was carried out by comparison with experimental results obtained by internal standard method and external standard method.

Charapitsa, Siarhei V; Kulevich, Nikita V; Makoed, Nicolai M; Mazanik, Arkadzi L; Sytova, Svetlana N

2012-01-01T23:59:59.000Z

342

Indoor Environment Program. 1992 Annual Report  

SciTech Connect (OSTI)

This paper reports progress during the year 1992 in the Indoor Environment Program in the Energy and Environment Division of Lawrence Berkeley Laboratory. Studies in the following areas are reported: energy performance and ventilation in buildings; physical and chemical characterization of indoor air pollutants; indoor radon; indoor air quality; exposure to indoor air pollutants and risk analysis. Pollutants of particular interest include: radon; volatile, semi-volatile and particulate organic compounds; and combustion emissions including environmental tobacco smoke, carbon monoxide, and nitrogen oxides.

Daisey, J.M.

1993-06-01T23:59:59.000Z

343

WearAir: Expressive T-shirts for Air Quality Sensing Sunyoung Kim and Eric Paulos  

E-Print Network [OSTI]

are less proactively concerned with air quality. AIR POLLUTANT: VOLATILE ORGANIC COMPOUNDS Different types of air pollutants contribute to air quality in different locations: Ozone, CO, NOx and VOCs are major contributors to outdoor air pollution; and particulate matters, VOCs, carbon monoxide and lead are common air

Mankoff, Jennifer

344

Precipitate hydrolysis process for the removal of organic compounds from nuclear waste slurries  

DOE Patents [OSTI]

A process for removing organic compounds from a nuclear waste slurry comprising reacting a mixture of radioactive waste precipitate slurry and an acid in the presence of a catalytically effective amount of a copper(II) catalyst whereby the organic compounds in the precipitate slurry are hydrolyzed to form volatile organic compounds which are separated from the reacting mixture. The resulting waste slurry, containing less than 10 percent of the original organic compounds, is subsequently blended with high level radioactive sludge land transferred to a vitrification facility for processing into borosilicate glass for long-term storage. 2 figs., 3 tabs.

Doherty, J.P.; Marek, J.C.

1987-02-25T23:59:59.000Z

345

Precipitate hydrolysis process for the removal of organic compounds from nuclear waste slurries  

DOE Patents [OSTI]

A process for removing organic compounds from a nuclear waste slurry comprising reacting a mixture of radioactive waste precipitate slurry and an acid in the presence of a catalytically effective amount of a copper (II) catalyst whereby the organic compounds in the precipitate slurry are hydrolyzed to form volatile organic compounds which are separated from the reacting mixture. The resulting waste slurry, containing less than 10 percent of the orginal organic compounds, is subsequently blended with high level radioactive sludge and transferred to a virtrification facility for processing into borosilicate glass for long-term storage.

Doherty, Joseph P. (Elkton, MD); Marek, James C. (Augusta, GA)

1989-01-01T23:59:59.000Z

347

Options introduction and volatility in the EU ETS1 Julien Chevallier 2  

E-Print Network [OSTI]

in the European Union Emissions Trading Scheme (EU ETS), the European Climate Exchange (ECX) has introduced option the introduction of options has increased or decreased volatility in the European Union Emissions Trading Sc

Paris-Sud XI, Université de

348

Volatility of hotel market fundamentals and the determinants of variations between markets  

E-Print Network [OSTI]

How can volatility as well as other dynamics and characteristics in hotel market fundamentals affecting risk be better understood? This paper explores that fundamental question along with other more specific questions that ...

Cason, Brian (Brian Paul)

2010-01-01T23:59:59.000Z

349

HOW TO DISTINGUISH BETWEEN CLOUDY MINI-NEPTUNES AND WATER/VOLATILE-DOMINATED SUPER-EARTHS  

E-Print Network [OSTI]

One of the most profound questions about the newly discovered class of low-density super-Earths is whether these exoplanets are predominately H2-dominated mini-Neptunes or volatile-rich worlds with gas envelopes dominated ...

Benneke, Björn

350

Trapping of volatiles in amorphous water ice. R. M. E. Mastrapa , R. H. Brown  

E-Print Network [OSTI]

were re- leased into the sample chamber at the same pressure as the water, measurements will be taken with a solar system composition gas with the proper ratios of water to volatile. References: [1] Bar-Nun, A., G

Cohen, Barbara Anne

351

Sensitivity of Investor Reaction to Market Direction and Volatility: The Case of Dividend Change Announcements  

E-Print Network [OSTI]

This study examines whether investor reactions are sensitive to the recent direction and/or volatility of underlying market movements. We find dividend change announcements elicit a greater change in stock price when the ...

Koch, Paul D.; Docking, Diane Scott

2004-02-01T23:59:59.000Z

352

A statistical analysis of the natural gas futures market : the interplay of sentiment, volatility and prices  

E-Print Network [OSTI]

This paper attempts to understand the price dynamics of the North American natural gas market through a statistical survey that includes an analysis of the variables influencing the price and volatility of this energy ...

Fazzio, Thomas J. (Thomas Joseph)

2010-01-01T23:59:59.000Z

353

Architectural Techniques For Managing Non-volatile Caches  

SciTech Connect (OSTI)

As chip power dissipation becomes a critical challenge in scaling processor performance, computer architects are forced to fundamentally rethink the design of modern processors and hence, the chip-design industry is now at a major inflection point in its hardware roadmap. The high leakage power and low density of SRAM poses serious obstacles in its use for designing large on-chip caches and for this reason, researchers are exploring non-volatile memory (NVM) devices, such as spin torque transfer RAM, phase change RAM and resistive RAM. However, since NVMs are not strictly superior to SRAM, effective architectural techniques are required for making them a universal memory solution. This book discusses techniques for designing processor caches using NVM devices. It presents algorithms and architectures for improving their energy efficiency, performance and lifetime. It also provides both qualitative and quantitative evaluation to help the reader gain insights and motivate them to explore further. This book will be highly useful for beginners as well as veterans in computer architecture, chip designers, product managers and technical marketing professionals.

Mittal, Sparsh [ORNL] ORNL

2013-01-01T23:59:59.000Z

354

Identification and evaluation of volatile compounds associated with vacuum and modified atmosphere packaged fresh red meats  

E-Print Network [OSTI]

with Lacrobacillus planrarum or Leuconostoc mesenteroides and stored for 28 days at 3'C included acetone, toluene, acetic acid, ethyl acetate, a hydrocarbon and CHCls. The profile of volatiles in packaged sterile loin tissue stored for 28 days was very similar.... , 1979, 1983; Vanderzant et al. , 1986). ~Although many studies have reported these off-odors, very little published information exists relative to the nature of the volatile aroma compounds which result from microbial or enzymatic activity during...

Jackson, Timothy Court

1989-01-01T23:59:59.000Z

355

The performance of a volatile oil reservoir overlain by a gas cap  

E-Print Network [OSTI]

THE PERFORMANCE OF A VOLATILE OIL RESERVOIR OVERLAIN BY A GAS CAP A Thesis By J. RALPH ELLIS, JR. Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE August, 1960 Major Subject: PETROLEUM ENGINEERING THE PERFORMANCE OF A VOLATILE OIL RESERVOIR OVERLAIN BY A GAS CAP A Thesis By J. RALPH ELLIS, JR. Approved as to style and content by: hairxnan of Coxnxnittee) (Head...

Ellis, Joseph Ralph, Jr

1960-01-01T23:59:59.000Z

356

Carbon monoxide alleviates ethanol-induced oxidative damage and inflammatory stress through activating p38 MAPK pathway  

SciTech Connect (OSTI)

Stress-inducible protein heme oxygenase-1(HO-1) is well-appreciative to counteract oxidative damage and inflammatory stress involving the pathogenesis of alcoholic liver diseases (ALD). The potential role and signaling pathways of HO-1 metabolite carbon monoxide (CO), however, still remained unclear. To explore the precise mechanisms, ethanol-dosed adult male Balb/c mice (5.0 g/kg.bw.) or ethanol-incubated primary rat hepatocytes (100 mmol/L) were pretreated by tricarbonyldichlororuthenium (II) dimmer (CORM-2, 8 mg/kg for mice or 20 ?mol/L for hepatocytes), as well as other pharmacological reagents. Our data showed that CO released from HO-1 induction by quercetin prevented ethanol-derived oxidative injury, which was abolished by CO scavenger hemoglobin. The protection was mimicked by CORM-2 with the attenuation of GSH depletion, SOD inactivation, MDA overproduction, and the leakage of AST, ALT or LDH in serum and culture medium induced by ethanol. Moreover, CORM-2 injection or incubation stimulated p38 phosphorylation and suppressed abnormal Tnfa and IL-6, accompanying the alleviation of redox imbalance induced by ethanol and aggravated by inflammatory factors. The protective role of CORM-2 was abolished by SB203580 (p38 inhibitor) but not by PD98059 (ERK inhibitor) or SP600125 (JNK inhibitor). Thus, HO-1 released CO prevented ethanol-elicited hepatic oxidative damage and inflammatory stress through activating p38 MAPK pathway, suggesting a potential therapeutic role of gaseous signal molecule on ALD induced by naturally occurring phytochemicals. - Highlights: • CO alleviated ethanol-derived liver oxidative and inflammatory stress in mice. • CO eased ethanol and inflammatory factor-induced oxidative damage in hepatocytes. • The p38 MAPK is a key signaling mechanism for the protective function of CO in ALD.

Li, Yanyan; Gao, Chao; Shi, Yanru; Tang, Yuhan; Liu, Liang; Xiong, Ting; Du, Min [Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030 (China); Ministry of Education Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030 (China); Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030 (China); Xing, Mingyou [Department of Infectious Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030 (China); Liu, Liegang [Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030 (China); Ministry of Education Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030 (China); Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030 (China); Yao, Ping, E-mail: yaoping@mails.tjmu.edu.cn [Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030 (China); Ministry of Education Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030 (China); Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030 (China)

2013-11-15T23:59:59.000Z

357

Carbon monoxide line emission as a CMB foreground: tomography of the star-forming universe with different spectral resolutions  

E-Print Network [OSTI]

The rotational lines of carbon monoxide and the fine structure lines of CII and of the most abundant metals, emitted during the epoch of enhanced star formation in the universe, are redshifted in the frequency channels where the present-day and future CMB experiments are sensitive. We estimate the contribution to the CMB angular power spectrum by the emission in such lines in merging star-forming galaxies. We used the Lacey-Cole approach to characterize the distribution of the merging halos, together with a parametrization for the star formation rate in each of them. Using observational data from a sample of local, low-redshift, and high-redshift objects, we calibrated the luminosity in each line as a function of the star formation rate. We show that the correlation term arising from CO line emission is a significant source of foreground for CMB in a broad range of frequencies (in particular in the 20-60 GHz band) and for 1000

Mattia Righi; Carlos Hernandez-Monteagudo; Rashid Sunyaev

2008-07-24T23:59:59.000Z

358

Organization Chart - Home  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LSD Logo About Us People & Organization Research News & Events Safety Internal Resources Organization Chart Departments Scientific Staff Directory Committees Organization Chart...

359

Complex Refractive Indices of Thin Films of Secondary Organic Materials by Spectroscopic Ellipsometry from 220 to 1200 nm  

E-Print Network [OSTI]

particles were produced in a flow tube reactor by ozonolysis of volatile organic compounds, including. By comparison, the UV absorption of the monoterpene-derived SOMs was negligible. On the basis of the measured and mode diameter. 1. INTRODUCTION Aerosol particles directly influence Earth's radiative balance

360

Infrared spectroscopic studies of carbon monoxide adsorbed on a series of silica-supported copper catalysts in different oxidation states  

SciTech Connect (OSTI)

Infrared spectroscopy has been used to study the adsorption of carbon monoxide (358-493 K, 0.1-20 kPa) on four copper-on-silica (2-10 wt% Cu) catalysts prepared by the ion-exchange technique. The measurements are made for each sample in three different states: unreduced (predominantly Cu{sup 2+}), and reduced (Cu{sup 0}), and partially reoxidized in nitrous oxide (Cu{sup +}). On unreduced samples, a major absorption band between 2127 and 2132 cm{sup {minus}1} due to CO adsorbed on small CuO particles and a weak band at 2199 cm{sup {minus}1} due to CO on isolated Cu{sup 2+} ions incorporated in the silica surface have been identified. The former adsorption obeys a Langmuir isotherm with a heat of adsorption of 29 kJ/mol independent of CuO particle size and surface coverage. After catalyst reduction, the major absorption band lies between 2090 and 2113 cm{sup {minus}1} and arises from CO linearly bound to very small (1- to 5-nm) copper metal clusters. The observed frequency shifts indicate the presence of steps and terraces similar to low index Cu planes in very small particles (1- to 2-nm), and the presence of similar higher index Cu planes on larger clusters (2- to 5-nm). The absorption is described by a Freundlich isotherm with the heat of CO adsorption decreasing with coverage from 50 to 22 kJ/mol on bigger particles but more constant (27 to 22 kJ/mol) on small particles. A surface copper/CO atomic ratio increasing from 5 to 12 is established at equilibrium saturation between 358 and 493 K using extinction coefficients determined in this study. In the reduced catalysts, a weakly adsorbed ({Delta}H{sub a} = {minus}20 kJ/mol) species assigned to CO bound to isolated Cu{sup +} ions is also found and absorbs at 2175 cm{sup {minus}1}. The frequency of this band does not vary with catalyst loading and is not affected by reoxidation of the catalyst in nitrous oxide.

Kohler, M.A.; Wainwright, M.S.; Trimm, D.L.; Cant, N.W. (Macquarie Univ., New South Wales (Australia) Univ. of South Wales (Australia))

1989-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Vertical composition gradient effects on original hydrocarbon in place volumes and liquid recovery for volatile oil and gas condensate reservoirs.  

E-Print Network [OSTI]

??Around the world, volatile oil and retrograde gas reservoirs are considered as complex thermodynamic systems and even more when they exhibit vertical composition variations. Those… (more)

Jaramillo Arias, Juan Manuel

2012-01-01T23:59:59.000Z

362

Oxidation and Volatilization from Tungsten Brush High Heat Flux Armor During High Temperature Steam Exposure  

SciTech Connect (OSTI)

Tungsten brush accommodates thermal stresses and high heat flux in fusion reactor components such as plasma facing surfaces or armor. However, inherently higher surface areas are introduced with the brush design. We have tested a specific design of tungsten brush in steam between 500 and 1100°C. Hydrogen generation and tungsten volatilization rates were determined to address fusion safety issues. The brush prepared from 3.2-mm diameter welding rods had a packing density of 85 percent. We found that both hydrogen generation and tungsten volatilization from brush, fixtured to represent a unit within a larger component, were less than projections based upon the total integrated surface area (TSA). Steam access and the escape of hydrogen and volatile oxide from void spaces within the brush are restricted compared to specimens with more direct diffusion pathways to the test environment. Hydrogen generation rates from restrained specimens based on normal surface area (NSA) remain about five times higher than rates based on total surface areas from specimens with direct steam access. Volatilization rates from restrained specimens based upon normal surface area (NSA) were only 50 percent higher than our historic cumulative maximum flux plot (CMFP) for tungsten. This study has shown that hydrogen generation and tungsten volatilization from brush do not scale according to predictions with previously determined rates, but in fact, with higher packing density could approach those from flat surfaces.

Smolik, Galen Richard; Pawelko, Robert James; Anderl, Robert Andrew; Petti, David Andrew

2000-05-01T23:59:59.000Z

363

Application of an all-solid-state diode-laser-based sensor for carbon monoxide detection by optical absorption in the 4.4 ? 4.8 µm spectral region  

E-Print Network [OSTI]

APPLICATION OF AN ALL-SOLID-STATE DIODE-LASER-BASED SENSOR FOR CARBON MONOXIDE DETECTION BY OPTICAL ABSORPTION IN THE 4.4 ? 4.8 ?m SPECTRAL REGION A Dissertation by RODOLFO BARRON JIMENEZ Submitted to the Office of Graduate... FOR CARBON MONOXIDE DETECTION BY OPTICAL ABSORPTION IN THE 4.4 ? 4.8 ?m SPECTRAL REGION A Dissertation by RODOLFO BARRON JIMENEZ Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY...

Rodolfo, Barron Jimenez

2005-02-17T23:59:59.000Z

364

Erace--an integrated system for treating organic-contaminated sites  

SciTech Connect (OSTI)

The U.S. Department of Energy`s (DOE) Pacific Northwest Laboratory (PNL) is developing a suite of electrical technologies for treating sites contaminated with hazardous organic compounds. These include: (1) Six-Phase Soil Heating (SPSH) to remove volatile and semi-volatile organic compounds from soils; (2) In Situ Corona (ISC) to decompose nonvolatile and bound organic contaminants in soils; (3) High-Energy Corona (HEC) to treat contaminated off-gases; and (4) Liquid Corona (LC) to treat contaminated liquids. These four technologies comprise ERACE (Electrical Remediation at Contaminated Environments), an integrated system for accomplishing site remediation with little or no secondary wastes produced that would require off-site treatment or disposal. Each ERACE technology can be employed individually as a stand-alone treatment process, or combined as a system for total site remediation. For example, an ERACE system for treating sites contaminated with volatile organics would integrate SPSH to remove the contaminants from the soil, LC to continuously treat an aqueous stream condensed out of the soil off-gas, and HEC to treat non-condensibles remaining in the off-gas, before atmospheric release.

Caley, S.M.; Heath, W.O.; Bergsman, T.M.; Gauglitz, P.A.; Pillay, C.; Moss, R.W.; Shah, R.R.; Goheen, S.C.; Camiaoni, D.M.

1994-11-01T23:59:59.000Z

365

Use of sonication for in-well softening of semivolatile organic compounds. 1997 annual progress report  

SciTech Connect (OSTI)

'This project investigates the in-situ degradation of semivolatile organic compounds (SVOCs) and volatile organic compounds (VOCs) using in-well sonication, in-well vapor stripping, and bioremediation. Pretreating groundwaters with sonication techniques in-situ would form VOCs that can be effectively removed by in-well vapor stripping and bioremediation. The mechanistic studies focus on the coupling of megasonics and ultrasonics to soften (i.e., partially degrade) the SVOCs; oxidative reaction mechanism studies; surface corrosion studies (on the reactor walls/well); enhancement due to addition of oxidants, quantification of the hydroxyl radical formation; identification/quantification of degradation products; volatility/degradability of the treated waters; development of a computer simulation model to describe combined in-well sonication/in-well vapor stripping/bioremediation; systems analysis/economic analysis; large laboratory-scale experiment verification; and field demonstration of the integrated technology. Benefits of this approach include: (1) Remediation is performed in-situ; (2) The treatment systems complement each other; their combination can drastically reduce or remove SVOCs and VOCs; (3) Ability to convert hard-to-degrade organics into more volatile organic compounds; (4) Ability to remove residual VOCs and softened SVOCs through the combined action of in-well vapor stripping and biodegradation; (5) Does not require handling or disposing of water at the ground surface; and (6) Cost-effective and improved efficiency, resulting in shortened clean-up times to remediate a site.'

Peters, R.W.; Manning, J. [Argonne National Lab., IL (US); Hoffman, M.R. [California Inst. of Tech., Pasadena, CA (US); Gorelick, S. [Stanford Univ., CA (US)

1997-01-01T23:59:59.000Z

366

Infrared spectra of carbon monoxide adsorbed on SiO sub 2 -supported lanthanide-Ni bimetallic catalysts and their catalytic properties  

SciTech Connect (OSTI)

Recently the surface properties of the lanthanide (rare earth) - transition metal intermetallics and lanthanide metal overlayers have attracted a growing interest from the point of view of technical applications in catalyst and hydrogen storage. However, despite the intrinsic interest and considerable potential of these novel materials, very little detailed work has been carried out with a view to unveiling the specific properties upon interactions of lanthanides with transition metals. It has been shown that Eu and Yb metals dissolve in liquid ammonia to yield homogeneous solutions containing the ammoniated electrons. When the transition metal powders are added to this solution, the metal powders react with the dissolved lanthanide metals in liquid ammonia to form novel bimetallic catalysts. Such a system can be used as a catalyst probe for studying the catalytic actions induced by interactions between the lanthanide and transition metals. The present investigation was extended to include a SiO{sub 2}-supported bimetallic systems obtained when Eu or Yb dissolved in liquid ammonia reacts with silica-supported Ni. Using Fourier transform (FT)-IR studies of adsorbed carbon monoxide the authors provided information about the way the surface components were disposed in this bimetallic system. Adsorbed carbon monoxide was used as a molecular probe for the nature of bimetallic surface since the IR spectra of adsorbed probe molecules directly reflected variations in the surface.

Imamura, Hayao; Sugimoto, Hiromi; Sakata, Yoshihisa; Tsuchiya, Susumu (Yamaguchi Univ., Ube (Japan))

1992-07-01T23:59:59.000Z

367

LONG-TERM STABILITY TESTING RESULTS USING SURROGATES AND SORBENTS FOR SAVANNAH RIVER SITE ORGANIC AND AQUEOUS WASTESTREAMS - 10016  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) has tasked MSE Technology Applications, Inc. (MSE) with evaluating the long-term stability of various commercially available sorbent materials to solidify two organic surrogate wastestreams (both volatile and nonvolatile), a volatile organic surrogate with a residual aqueous phase, an aqueous surrogate, and an aqueous surrogate with a residual organic phase. The Savannah River Site (SRS) Legacy and F-Canyon plutonium/uranium extraction (PUREX) process waste surrogates constituted the volatile organic surrogates, and various oils constituted the nonvolatile organic surrogates. The aqueous surrogates included a rainwater surrogate and an aqueous organic surrogate. MSE also evaluated the PUREX surrogate with a residual aqueous component with and without aqueous type sorbent materials. Solidification of the various surrogate wastestreams listed above was performed from 2004 to 2006 at the MSE Test Facility located in Butte, Montana. This paper summarizes the comparison of the initial liquid release test (LRT) values with LRT results obtained during subsequent sampling events in an attempt to understand and define the long-term stability characteristics for the solidified wastestreams.

Burns, H.

2009-11-10T23:59:59.000Z

368

A study of the volatile matter of coal as a function of the heating rate  

SciTech Connect (OSTI)

A study of the volatile matter yields as a function of the heating rate was conducted. A suite of 21 coal and coke samples varying in rank from anthracitic to lignitic and heating rates from 10{degrees}C/min to about 450{degrees}C/min were used in the study. Heating rates up to 60{degrees}C per minute, which are typically used in ASTM Test Method 5142 (instrumental Proximate Analysis), were achieved in a macro thermogravimetric analysis (TGA) system. Heating rates of 50-200{degrees}C/min were obtained in a micro TGA system. All measurements were made in a nitrogen atmosphere. The results of the study illustrate the dependence of the volatile matter yield on the heating rate. For most coals and cokes the optimum heating rate for determining volatile matter values that agree with those obtained by ASTM Method D 3175 appears to be in the 100-150{degrees}C range.

Yanes, E.; Wilhite, D.; Riley, J.M. Jr. [Western Kentucky Univ., Bowling Green, KY (United States)] [and others

1996-12-31T23:59:59.000Z

369

Method For Removing Volatile Components From A Gel-Cast Ceramic Article  

DOE Patents [OSTI]

A method of removing substantially all of the volatile component in a green, volatile-containing ceramic article is disclosed. The method comprises freezing the ceramic article; and then subjecting the frozen article to a vacuum for a sufficient time to freeze-dry the article. Frequently, the article is heated while being freeze-dried. Use of this method efficiently reduces the propensity for any warpage of the article. The article is often formed from a ceramic slurry in a gel-casting process. A method for fabricating a ceramic core used in investment casting is also described.

Klug, Frederic Joseph (Schenectady, NY); DeCarr, Sylvia Marie (Schenectady, NY)

2004-09-07T23:59:59.000Z

370

Gas-chromatographic identification of volatile products from thermal processing of Bitumen  

SciTech Connect (OSTI)

The variety of bitumen industrial brands is evident in the significant variation of composition and ratio of volatile thermal processing products, which makes their detailed characterization difficult. For that reason, in the authors` opinion a simple and easily reproducible method for gas chromatographic analysis and identification of these substances should be of greater interest than gathering more such results. In this report the authors discuss the selection of an optimal combination of group and individual gas chromatographic methods for identification of volatile thermal processing products in the presence of air, using the example of AP bitumen, the main brand used in Czechoslavakia for production of asphalt. 15 refs., 1 tab.

Zenkevich, I.G.; Ventura, K. [Advanced Chemical Engineering Institute, Pardubice (Czechoslovakia)

1992-03-10T23:59:59.000Z

371

Method for removing volatile components from a ceramic article, and related processes  

DOE Patents [OSTI]

A method of removing substantially all of the volatile component in a green, volatile-containing ceramic article is disclosed. The method comprises freezing the ceramic article; and then subjecting the frozen article to a vacuum for a sufficient time to freeze-dry the article. Frequently, the article is heated while being freeze-dried. Use of this method efficiently reduces the propensity for any warpage of the article. The article is often formed from a ceramic slurry in a gel-casting process. A method for fabricating a ceramic core used in investment casting is also described.

Klug, Frederic Joseph (Schenectady, NY); DeCarr, Sylvia Marie (Waterford, NY)

2002-01-01T23:59:59.000Z

372

An unexpected journey: experimental insights into magma and volatile transport beneath Erebus volcano, Antarctica  

E-Print Network [OSTI]

fugacity of the volatile component and the concentration of that volatile dissolved in the melt. Because of the poor fit of our CO2 data to a power law regression, the pure-CO2 experiments of Lesne et al. (2011b) were used to create these isobars... /mantle boundary. Seismic and gravitational investigations on and around Ross Island suggest that this boundary is ?20 km deep (Cooper et al., 1994; Finotello et al., 2011; Newhall & Dzurisin, 1989). The evolution of the Erebus cone itself is inferred to have taken...

Iacovino, Kayla

2014-06-10T23:59:59.000Z

373

The effect of chemical dispersants on the solution of volatile liquid hydrocarbons from spilled crude oil  

E-Print Network [OSTI]

THE EFFECT OF CHEMICAL DISPERSANTS ON THE SOLUTION OF VOLATILE LIQUID HYDROCARBONS FROM SPILLED CRUDE OIL A Thesis by THOMAS JOSEPH McDONALD Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE August 1982 Major Subject: Oceanography THE EFFECT OF CHEMICAL DISPERSANTS ON THE SOLUTION OF VOLATILE LIQUID HYDROCARBONS FROM SPILLED CRUDE OIL A Thesis by THOMAS JOSEPH McDONALD Approved as to style and content by...

McDonald, Thomas Joseph

1982-01-01T23:59:59.000Z

374

Final Report - Glass Formulation Testing to Increase Sulfate Volatilization from Melter, VSL-04R4970-1, Rev. 0, dated 2/24/05  

SciTech Connect (OSTI)

The principal objectives of the DM100 and DM10 tests were to determine the impact of four different organics and one inorganic feed additive on sulfate volatilization and to determine the sulfur partitioning between the glass and the off-gas system. The tests provided information on melter processing characteristics and off-gas data including sulfur incorporation and partitioning. A series of DM10 and DM100 melter tests were conducted using a LAW Envelope A feed. The testing was divided into three parts. The first part involved a series of DM10 melter tests with four different organic feed additives: sugar, polyethylene glycol (PEG), starch, and urea. The second part involved two confirmatory 50-hour melter tests on the DM100 using the best combination of reductants and conditions based on the DM10 results. The third part was performed on the DM100 with feeds containing vanadium oxide (V{sub 2}O{sub 5}) as an inorganic additive to increase sulfur partitioning to the off-gas. Although vanadium oxide is not a reductant, previous testing has shown that vanadium shows promise for partitioning sulfur to the melter exhaust, presumably through its known catalytic effect on the SO{sub 2}/SO{sub 3} reaction. Crucible-scale tests were conducted prior to the melter tests to confirm that the glasses and feeds would be processable in the melter and that the glasses would meet the waste form (ILAW) performance requirements. Thus, the major objectives of these tests were to: ? Perform screening tests on the DM10 followed by tests on the DM100-WV system using a LAW -Envelope A feed with four organic additives to assess their impact on sulfur volatilization. ? Perform tests on the DM100-WV system using a LAW -Envelope A feed containing vanadium oxide to assess its impact on sulfur volatilization. ? Determine feed processability and product quality with the above additives. ? Collect melter emissions data to determine the effect of additives on sulfur partitioning and melter emissions. ? Collect and analyze discharged glass to determine sulfur retention in the glass. ? Prepare and characterize feeds and glasses with the additives to confirm that the feeds and the glass melts are suitable for processing in the DM100 melter. ? Prepare and characterize glasses with the additives to confirm that the glasses meet the waste form (ILAW) performance requirements.

Kruger, Albert A.; Matlack, K. A.; Pegg, I. L.; Gong, W.

2013-11-13T23:59:59.000Z

375

ORGANIC CHEMISTRY UCLA Organic Chemistry Faculty  

E-Print Network [OSTI]

ORGANIC CHEMISTRY UCLA Organic Chemistry Faculty perform research in molecular machines, exotic CHEMISTRY FACULTY RESEARCH INTERESTS Anne M. Andrews, Professor-in-Residence: Understanding how areas of interest include cross- coupling reactions, green chemistry, heterocycle synthesis, and natural

Levine, Alex J.

376

Determination of Henry's law constants of organics in dilute aqueous solutions  

SciTech Connect (OSTI)

Accurate knowledge of Henry's law constants, H, or air/water partitioning coefficients are required to predict the behavior of organic compounds in the environment. In particular, when the compounds are relatively volatile and exhibit low solubility in water, air stripping may be a viable method for above-ground treatment. Henry's law constants of 15 volatile organic compounds in dilute aqueous solutions were measured by the procedure of equilibrium partitioning in a closed system. The method is based upon the measurement of the headspace concentration by gas chromatography. The compounds investigated included six halogenated hydrocarbons, four aromatic hydrocarbons, and five alkanes. The measurements were made at three temperatures between 25 and 45 C. The measured Henry's law constants compared well with the literature data of some liquids. The temperature dependence of Henry's law constant was also studied from the van't Hoff relation.

Hansen, K.C.; Zhou, Zhou; Yaws, C.L.; Aminabhavi, T.M. (Lamar Univ., Beaumont, TX (United States). Dept. of Chemistry)

1993-10-01T23:59:59.000Z

377

An Analysis of Price Volatility in Different Spot Markets for Electricity in the U.S.A.  

E-Print Network [OSTI]

An Analysis of Price Volatility in Different Spot Markets for Electricity in the U.S.A. by Tim important feature. Spot prices for electricity have been very volatile with dramatic price spikes occurring insight into the behavior of spot prices for electricity, and in particular, to model the type

378

Waste Tank Organic Safety Project: Analysis of liquid samples from Hanford waste tank 241-C-103  

SciTech Connect (OSTI)

A suite of physical and chemical analyses has been performed in support of activities directed toward the resolution of an Unreviewed Safety Question concerning the potential for a floating organic layer in Hanford waste tank 241-C-103 to sustain a pool fire. The analysis program was the result of a Data Quality Objectives exercise conducted jointly with staff from Westinghouse Hanford Company and Pacific Northwest Laboratory (PNL). The organic layer has been analyzed for flash point, organic composition including volatile organics, inorganic anions and cations, radionuclides, and other physical and chemical parameters needed for a safety assessment leading to the resolution of the Unreviewed Safety Question. The aqueous layer underlying the floating organic material was also analyzed for inorganic, organic, and radionuclide composition, as well as other physical and chemical properties. This work was conducted to PNL Quality Assurance impact level III standards (Good Laboratory Practices).

Pool, K.H.; Bean, R.M.

1994-03-01T23:59:59.000Z

379

Partitioning Behavior of Organic Contaminants in Carbon Storage Environments: A Critical Review  

SciTech Connect (OSTI)

Carbon capture and storage is a promising strategy for mitigating the CO{sub 2} contribution to global climate change. The large scale implementation of the technology mandates better understanding of the risks associated with CO{sub 2} injection into geologic formations and the subsequent interactions with groundwater resources. The injected supercritical CO{sub 2} (sc-CO{sub 2}) is a nonpolar solvent that can potentially mobilize organic compounds that exist at residual saturation in the formation. Here, we review the partitioning behavior of selected organic compounds typically found in depleted oil reservoirs in the residual oil–brine–sc-CO{sub 2} system under carbon storage conditions. The solubility of pure phase organic compounds in sc-CO{sub 2} and partitioning of organic compounds between water and sc-CO{sub 2} follow trends predicted based on thermodynamics. Compounds with high volatility and low aqueous solubility have the highest potential to partition to sc-CO{sub 2}. The partitioning of low volatility compounds to sc-CO{sub 2} can be enhanced by co-solvency due to the presence of higher volatility compounds in the sc-CO{sub 2}. The effect of temperature, pressure, salinity, pH, and dissolution of water molecules into sc-CO{sub 2} on the partitioning behavior of organic compounds in the residual oil-brine-sc-CO{sub 2} system is discussed. Data gaps and research needs for models to predict the partitioning of organic compounds in brines and from complex mixtures of oils are presented. Models need to be able to better incorporate the effect of salinity and co-solvency, which will require more experimental data from key classes of organic compounds.

Burant, Aniela; Lowry, Gregory V.; Karamalidis, Athanasios K.

2013-01-01T23:59:59.000Z

380

A novel Whole Air Sample Profiler (WASP) for the quantification of volatile organic compounds in the boundary layer  

SciTech Connect (OSTI)

The emission and fate of reactive VOCs is of inherent interest to those studying chemical biosphere-atmosphere interactions. In-canopy VOC observations are obtainable using tower-based samplers, but the lack of suitable sampling systems for the full boundary 5 layer has limited the data characterizing the vertical structure of such gases above the canopy height and still in the boundary layer. This is the important region where many reactive VOCs are oxidized or otherwise removed. Here we describe an airborne sampling system designed to collect a vertical profile of air into a 3/800 OD tube 150m in length. The inlet ram air pressure is used to flow sampled air through the 10 tube, which results in a varying flow rate based on aircraft speed and altitude. Since aircraft velocity decreases during ascent, it is necessary to account for the variable flow rate into the tube. This is accomplished using a reference gas that is pulsed into the air stream so that the precise altitude of the collected air can be reconstructed post-collection. The pulsed injections are also used to determine any significant effect 15 from diffusion/mixing within the sampling tube, either during collection or subsequent extraction for gas analysis. This system has been successfully deployed, and we show some measured vertical profiles of isoprene and its oxidation products methacrolein and methyl vinyl ketone from a mixed canopy near Columbia, Missouri.

Mak, J. E.; Su, L.; Guenther, Alex B.; Karl, Thomas G.

2013-10-16T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Flux Measurements of Volatile Organic Compounds from an Urban Tower Platform in Houston, Texas: Trends and Tracers  

E-Print Network [OSTI]

and traffic counts except during variable working hours. To assign measured fluxes to local sources, we tested a bulk flux footprint model (Kormann and Meixner model) designed for uniform emission surface areas in this urban, heterogeneous landscape. Tracer...

Hale, Martin C

2014-05-08T23:59:59.000Z

382

Model Estimates of the Contributions of Environmental Tobacco Smoke to Volatile Organic Compound Exposures in Office Buildings  

E-Print Network [OSTI]

vinyl ketone 2,3-Butadione Acrolein Limonene 1,3-Butadieneconcentrations for for acrolein, acetaldehyde and 1,3-

Daisey, J.M.

2008-01-01T23:59:59.000Z

383

Analysis of volatile organic compounds (VOCs) in A/M Area Crouch Branch (Cretaceous) Aquifer characterization samples: 1993  

SciTech Connect (OSTI)

Samples were collected during the A/M Area Crouch Branch (Cretaceous) Aquifer Characterization (Phase I) Program. The samples were analyzed for chlorinated VOCs by the Savannah River Technology Center (SRTC) and MicroSeeps Ltd. All samples were sealed in the field immediately upon retrieval of the core and subsampling. A total of 113 samples locations were selected for analysis. The Environmental Sciences Section (ESS) of SRTC analyzed all locations in duplicate (226 samples). MicroSeeps Ltd was selected as the quality assurance (QA) check laboratory. MicroSeeps Ltd analyzed 40 locations with 4 duplicates (44 samples). The samples were collected from seven boreholes in A/M Area in the interval from 200 feet deep to the total depth of the boring (360 feet deep nominal); samples were collected every 10 feet within this interval. The sampling zone corresponds approximately to the Crouch Branch Aquifer in A/M Area. The overall A/M Area Crouch Branch Aquifer characterization objectives, a brief description of A/M Area geology and hydrology, and the sample locations, field notes, driller lithologic logs, and required procedural documentation are presented in WSRC (1993).

Looney, B.B.; Haselow, J.S.; Keenan, M.A.; Van Pelt, R.; Eddy-Dilek, C.A.; Rossabi, J.; Simmons, J.L.

1993-12-06T23:59:59.000Z

384

The development of a sensitive method to study volatile organic compounds in gaseous emissions of lung cancer cell lines  

E-Print Network [OSTI]

HCO3 producing excess H+ ions in the medium and therefore a fall in pH. This is seen as a color change. 10 When the confluence has reached 90% the cells are ready to be sub-cultured (Fig 2). 50 % cells in media Thawed... patients with no prior treatment for lung cancer. We have used an alternative method for the spectrometric analysis and quantitation of the selected chemical markers. The pre-concentration method involved a Purge and Trap unit with a thermal desorber...

Maroly, Anupam

2005-08-29T23:59:59.000Z

385

French permanent survey on indoor air quality--microenvironmental concentrations of volatile organic compounds in 90 French dwellings  

E-Print Network [OSTI]

-17Apr2012 Author manuscript, published in "7th International Conference, Healthy Buildings 2003, Singapore : Singapore (2003)" #12;350 Proceedings: Healthy Buildings 2003 and time activity diaries

Boyer, Edmond

386

Comparisons of diffusive and advective fluxes of gas phase volatile organic compounds (VOCs) in unsaturated zones under natural conditions  

E-Print Network [OSTI]

) in unsaturated zones under natural conditions Kehua You a , Hongbin Zhan a,b, a Department of Geology

Zhan, Hongbin

387

Airborne and ground based measurements of volatile organic compounds using proton transfer reaction mass spectrometry in Texas and Mexico City  

E-Print Network [OSTI]

of toluene elevated as much as 216 parts per billion by volume (ppbv) and ethyl acetate elevated as much as 183 ppbv above background levels were observed during the late night and early morning hours. These plumes indicate the probability of significant...

Fortner, Edward Charles

2009-05-15T23:59:59.000Z

388

ESTIMATING THE VOLATILITY OF SPOT PRICES IN RESTRUCTURED ELECTRICITY MARKETS AND THE IMPLICATIONS FOR OPTION VALUES  

E-Print Network [OSTI]

Draft 1e ESTIMATING THE VOLATILITY OF SPOT PRICES IN RESTRUCTURED ELECTRICITY MARKETS path. Accurate valuation of claims based on competitive electricity prices has proved problematic, as electricity price data are not well represented by traditional commodity price models of Brownian motion

389

Experimental studies of actinide volatilities with application to mixed waste oxidation processors  

SciTech Connect (OSTI)

The transpiration technique is used to measure volatilities of U from U{sub 3}O{sub 8}(s), Pu from PuO{sub 2}(s) and Pu and Am from PuO{sub 2}/2%AmO{sub 2}(s) in the presence of steam and oxygen at temperatures ranging from 900 to 1300{degree}C.

Krikorian, O.H.; Ebbinghaus, B.B.; Condit, R.H.; Adamson, M.G.; Fontes, A.S. Jr.; Fleming, D.L.

1993-04-30T23:59:59.000Z

390

Effects on milk yield and composition of infusions of volatile fatty acids and caseinate into  

E-Print Network [OSTI]

Effects on milk yield and composition of infusions of volatile fatty acids and caseinate isoenergetic infusions of either a low (17 mol/day of 64% acetic, 21% propionic and 15% butyric acids) or high that with infusions, energy and nitrogen needs were met and consisted of 60% maize silage, 10% hay, 21.5% energy

Paris-Sud XI, Université de

391

Fluid saturation and volatile partitioning between melts and hydrous fluids in crustal magmatic systems: The contribution  

E-Print Network [OSTI]

systems, experimental results on the solubility and partitioning of H2O, CO2, S, Cl, F and a few other ......................................................................... 2 Keywords: magmatic volatiles, solubility, water, carbon dioxide, sulfur, halogens 2 1 systems: The contribution of experimental measurements and solubility models Don R. Baker1 and Marina

Boyer, Edmond

392

Separation and Volatility of Locational Marginal Prices in Restructured Wholesale Power Markets  

E-Print Network [OSTI]

1 Separation and Volatility of Locational Marginal Prices in Restructured Wholesale Power Markets (LMPs) in an ISO-managed restructured wholesale power market operating over an AC transmission grid-determining) generation companies induce correlations among neighboring LMPs. Index Terms--Restructured wholesale power

Tesfatsion, Leigh

393

Lunar apatite with terrestrial volatile abundances Jeremy W. Boyce1,2  

E-Print Network [OSTI]

is a high-Al basalt rich in K, rare-earth elements and P (KREEP), consisting dominantly of augite is texturally associated with anhedral apatite having variable Cl and rare-earth-element con- tents is thought to be depleted relative to the Earth in volatile elements such as H, Cl and the alkalis1

Perfect, Ed

394

Agriculture and Trade Opportunities for Tanzania: Past Volatility and Future Climate Changerode_672 429..447  

E-Print Network [OSTI]

Agriculture and Trade Opportunities for Tanzania: Past Volatility and Future Climate Changerode_672 global heterogeneity in climate-induced agricultural variability,Tanzania has the potential to substan could thus export grain to countries as climate change increases the likelihood of severe precipitation

Pittendrigh, Barry

395

Accurate dispensing of volatile reagents on demand for chemical reactions in EWOD chips{  

E-Print Network [OSTI]

Accurate dispensing of volatile reagents on demand for chemical reactions in EWOD chips{ Huijiang the use of a filler liquid (e.g., oil). These properties pose challenges for delivering controlled volumes are introduced to the chip, independent of time delays between dispensing operations. On-demand dispensing

396

Characterizing the formation of secondary organic aerosols  

SciTech Connect (OSTI)

Organic aerosol is an important fraction of the fine particulate matter present in the atmosphere. This organic aerosol comes from a variety of sources; primary organic aerosol emitted directly from combustion process, and secondary aerosol formed in the atmosphere from condensable vapors. This secondary organic aerosol (SOA) can result from both anthropogenic and biogenic sources. In rural areas of the United States, organic aerosols can be a significant part of the aerosol load in the atmosphere. However, the extent to which gas-phase biogenic emissions contribute to this organic load is poorly understood. Such an understanding is crucial to properly apportion the effect of anthropogenic emissions in these rural areas that are sometimes dominated by biogenic sources. To help gain insight on the effect of biogenic emissions on particle concentrations in rural areas, we have been conducting a field measurement program at the University of California Blodgett Forest Research Facility. The field location includes has been used to acquire an extensive suite of measurements resulting in a rich data set, containing a combination of aerosol, organic, and nitrogenous species concentration and meteorological data with a long time record. The field location was established in 1997 by Allen Goldstein, a professor in the Department of Environmental Science, Policy and Management at the University of California at Berkeley to study interactions between the biosphere and the atmosphere. The Goldstein group focuses on measurements of concentrations and whole ecosystem biosphere-atmosphere fluxes for volatile organic compounds (VOC's), oxygenated volatile organic compounds (OVOC's), ozone, carbon dioxide, water vapor, and energy. Another important collaborator at the Blodgett field location is Ronald Cohen, a professor in the Chemistry Department at the University of California at Berkeley. At the Blodgett field location, his group his group performs measurements of the concentrations of important gas phase nitrogen compounds. Experiments have been ongoing at the Blodgett field site since the fall of 2000, and have included portions of the summer and fall of 2001, 2002, and 2003. Analysis of both the gas and particle phase data from the year 2000 show that the particle loading at the site correlates with both biogenic precursors emitted in the forest and anthropogenic precursors advected to the site from Sacramento and the Central Valley of California. Thus the particles at the site are affected by biogenic processing of anthropogenic emissions. Size distribution measurements show that the aerosol at the site has a geometric median diameter of approximately 100 nm. On many days, in the early afternoon, growth of nuclei mode particles (<20 nm) is also observed. These growth events tend to occur on days with lower average temperatures, but are observed throughout the summer. Analysis of the size resolved data for these growth events, combined with typical measured terpene emissions, show that the particle mass measured in these nuclei mode particles could come from oxidation products of biogenic emissions, and can serve as a significant route for SOA partitioning into the particle phase. During periods of each year, the effect of emissions for forest fires can be detected at the Blodgett field location. During the summer of 2002 emissions from the Biscuit fire, a large fire located in Southwest Oregon, was detected in the aerosol data. The results show that increases in particle scattering can be directly related to increased black carbon concentration and an appearance of a larger mode in the aerosol size distribution. These results show that emissions from fires can have significant impact on visibility over large distances. The results also reinforce the view that forest fires can be a significant source of black carbon in the atmosphere, which has important climate and visibility. Continuing work with the 2002 data set, particularly the combination of the aerosol and gas phase data, will continue to provide important information o

Lunden, Melissa; Black, Douglas; Brown, Nancy

2004-02-01T23:59:59.000Z

397

Integration of Non-volatile Memory into Storage Hierarchy  

E-Print Network [OSTI]

critical dirty blocks in the cache until their subsequent reuse. S et 0 S et 1 S et 3 nor m al cach e S et 1 5 S et 1 3 P ar tition 0 P ar tition 1 P ar tition 2 P ar tition 3 S et 8 S et 9 h ash 1 S et 1 S et 5 S et 4P ar tition cach e S et 2 S et 6... S et 7S et 3 S et 0 h ash 2 h ash 3 h ash 4 1 6 - w ay p er set in nor m al cach e S et 1 0 S et 1 1 S et 1 4 S et 1 2 S et 2 4 - w ay p er set in p ar titioned- cach e Cach e cap acity = 6 4 cach e lines Figure 2.4: The organization...

Qiu, Sheng

2013-12-04T23:59:59.000Z

398

Quantum-chemical investigation of the interaction of nitrogen and carbon monoxide molecules with the Lewis acid sites of aluminium oxide  

SciTech Connect (OSTI)

Within the framework of the cluster approximation, using covalent and ionic models of Lewis acid sites of aluminumoxide, their electronic structure, as well as that of complexes of nitrogen and carbon monoxide molecules with them, was calculated. It was shown that the Lewis acid sites, representing a truncated tetrahedron, exhibit stronger electron-acceptor properties than the corresponding sites in the form of a truncated octahedron. For both molecules, the linear form of adsorption is energetically more profitable than the T-shaped form. The results obtained by the nonempirical SCF MO LCAO method in the STO-3GF basis and by semiempirical methods in CNDO/2 and INDO approximatations, are qualitatively the same.

Senchenya, I.N.; Chuvylkin, N.D.; Kazanskii, V.B.

1986-11-01T23:59:59.000Z

399

Organic Photovoltaics Philip Schulz  

E-Print Network [OSTI]

Field Effect Transistors Organic Light Emitting Diodes Organic Solar Cells .OFET, OTFT .RF-ID tag 1977 ­ Conductivity in polymers 1986 ­ First heterojunction OPV 1987 ­ First organic light emitting diode (OLED) 1993 ­ First OPV from solution processing 2001 ­ First certified organic solar cell with 2

Firestone, Jeremy

400

Departmental Organization and Management  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Effective immediately, the Departmental organization structure reflected in the chart at Attachment 1 has been approved.

1993-06-10T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Integrated production of fuel gas and oxygenated organic compounds from synthesis gas  

DOE Patents [OSTI]

An oxygenated organic liquid product and a fuel gas are produced from a portion of synthesis gas comprising hydrogen, carbon monoxide, carbon dioxide, and sulfur-containing compounds in a integrated feed treatment and catalytic reaction system. To prevent catalyst poisoning, the sulfur-containing compounds in the reactor feed are absorbed in a liquid comprising the reactor product, and the resulting sulfur-containing liquid is regenerated by stripping with untreated synthesis gas from the reactor. Stripping offgas is combined with the remaining synthesis gas to provide a fuel gas product. A portion of the regenerated liquid is used as makeup to the absorber and the remainder is withdrawn as a liquid product. The method is particularly useful for integration with a combined cycle coal gasification system utilizing a gas turbine for electric power generation.

Moore, Robert B. (Allentown, PA); Hegarty, William P. (State College, PA); Studer, David W. (Wescosville, PA); Tirados, Edward J. (Easton, PA)

1995-01-01T23:59:59.000Z

402

Catalysts for the hydrodenitrogenation of organic materials and process for the preparation of the catalysts  

DOE Patents [OSTI]

The present invention discloses a process for forming a catalyst for the hydrodenitrogenation of an organic feedstock, which includes (a) obtaining a precatalyst comprising cobalt and molybdenum or nickel and molybdenum; (b) adding in a non-oxidizing an atmosphere selected from hydrogen, helium, nitrogen, neon, argon, carbon monoxide or mixtures thereof to the precatalyst of step (a), a transition met ORIGIN OF THE INVENTION This invention was made in the course of research partially sponsored by the Department of Energy through grants DE-FG22-83P C60781 and DE-FG-85-PC80906, and partially supported by grant CHE82-19541 of the National Science Foundation. The invention is subject to Public Law 96-517 (and amendments), and the United States Government has rights in the present invention.

Laine, Richard M. (Palo Alto, CA); Hirschon, Albert S. (Menlo Park, CA); Wilson, Jr., Robert B. (Mountain View, CA)

1987-01-01T23:59:59.000Z

403

Mixed crystal organic scintillators  

DOE Patents [OSTI]

A mixed organic crystal according to one embodiment includes a single mixed crystal having two compounds with different bandgap energies, the organic crystal having a physical property of exhibiting a signal response signature for neutrons from a radioactive source, wherein the signal response signature does not include a significantly-delayed luminescence characteristic of neutrons interacting with the organic crystal relative to a luminescence characteristic of gamma rays interacting with the organic crystal. According to one embodiment, an organic crystal includes bibenzyl and stilbene or a stilbene derivative, the organic crystal having a physical property of exhibiting a signal response signature for neutrons from a radioactive source.

Zaitseva, Natalia P; Carman, M Leslie; Glenn, Andrew M; Hamel, Sebastien; Hatarik, Robert; Payne, Stephen A; Stoeffl, Wolfgang

2014-09-16T23:59:59.000Z

404

The impact of crude-oil price volatility on agricultural employment in the United States  

SciTech Connect (OSTI)

This study focuses on the impact of fluctuations in the price of crude oil on agricultural employment in the United States. After reviewing previous assessments of the issue, the existence of an empirical relationship between agricultural employment and crude oil price volatility is established using Granger causality. Subsequently, the nature of the relationship is estimated with the results suggesting that at least three full years are required before the measurable impacts of a percentage change in the real price of crude oil on the change in agricultural employment are exhausted. Finally, the structural stability of the functional relationship between the change in agricultural employment and the volatility of the price of crude oil, the percentage changes in expected net farm income, realized technological innovation, and the wage rate is examined.

Uri, N.D. [Dept. of Agriculture, Washington, DC (United States)

1995-12-31T23:59:59.000Z

405

PII S0016-7037(01)00802-X Volatilization kinetics of silicon carbide in reducing gases: An experimental study with  

E-Print Network [OSTI]

PII S0016-7037(01)00802-X Volatilization kinetics of silicon carbide in reducing gases occurring hexagonal sili- con carbide ( -SiC), and -SiC, the cubic form, are occasion- ally reported

Grossman, Lawrence

406

Vertical composition gradient effects on original hydrocarbon in place volumes and liquid recovery for volatile oil and gas condensate reservoirs  

E-Print Network [OSTI]

Around the world, volatile oil and retrograde gas reservoirs are considered as complex thermodynamic systems and even more when they exhibit vertical composition variations. Those systems must be characterized by an equation of state (EOS...

Jaramillo Arias, Juan Manuel

2000-01-01T23:59:59.000Z

407

Comprehensive verification of new method "Ethanol as Internal Standard" for determination of volatile compounds in alcohol products by gas chromatography  

E-Print Network [OSTI]

Recently proposed new method "Ethanol as Internal Standard" for determination of volatile compounds in alcohol products by gas chromatography is investigated from different sides. Results of experimental study from three different laboratories from Belarus and Russian Federation are presented.

Charapitsa, Siarhei V; Markovsky, Mikhail G; Yakuba, Yurii F; Kotov, Yurii N

2014-01-01T23:59:59.000Z

408

DOI: 10.1002/ejic.200600960 Synthesis and Sublimation Kinetics of a Highly Volatile Asymmetric Iron(II)  

E-Print Network [OSTI]

FULL PAPER DOI: 10.1002/ejic.200600960 Synthesis and Sublimation Kinetics of a Highly Volatile: Asymmetric iron(II) amidinate / Bridging ligands / Metathesis / Sublimation kinetics / Thermochemistry properties have been the subject of intense investigations in chemistry, electronics, optics, energy

409

Evaluation of the colossal electroresistance (CER) effect and its application in the non-volatile Resistive Random Access Memory (RRAM)  

E-Print Network [OSTI]

Flash memory, the current leading technology for non-volatile memory (NVM), is projected by many to run obsolete in the face of future miniaturization trend in the semiconductor devices due to some of its technical ...

Wicaksono, Aulia Tegar

2009-01-01T23:59:59.000Z

410

The role of non-volatile memory from an application perspective  

SciTech Connect (OSTI)

Current, emerging, and future NVM (non-volatile memory) technologies give us hope that we will be able to architect HPC (high performance computing) systems that initially use them in a memory and storage hierarchy, and eventually use them as the memory and storage for the system, complete with ownership and protections as a HDD-based (hard-disk-drive-based) file system provides today.

Kettering, Brett M [Los Alamos National Laboratory; Nunez, James A [Los Alamos National Laboratory

2010-09-16T23:59:59.000Z

411

Volatile sulfhydryl compounds produced in Cheddar cheese slurries upon the addition of whey protein and casein  

E-Print Network [OSTI]

. The addition of whey protein, casein or a combination of whey protein plus 7-glutamyl transpeptidase to slurries was studied to determine the effect of these proteins on volatile sulfhydryl compound production. Milk heat treatment decreased (P&0. 05... measurable free sulfhydryl groups are present in native caseins and only limited amounts are generated by high heat treatments. Those proteins remaining in solution after removal of caseins from milk comprise about 0. 6 to 0. 7% of milk and are designated...

Sheffield, Amelia Rose

2012-06-07T23:59:59.000Z

412

The role of microorganisms in the production of volatile sulfhydryl compounds in cheddar cheese slurries  

E-Print Network [OSTI]

the role of lac- tic cultures on the production of volatile sulfhydryl com- pounds in the slurries. Hydrogen sulfide, methanethiol, carbonyl sulfide and dimethyl sulfide were found in the headspace of slurries prepared from curd manufactured.... (39) stated that although the role of hydrogen sulfide in the production of Cheddar flavor is uncertain, its influence should not be discounted. They suggested that dimethyl sulfide does not contribute directly to flavor. Aston and Douglas (1...

Ponce-Trevino, Raul

2012-06-07T23:59:59.000Z

413

Electron impact and chemical ionization mass spectral analysis of a volatile uranyl derivative  

SciTech Connect (OSTI)

Quadrupole mass spectral analysis of the volatile uranium ligand complex bis (1,1,1,5,5,5-hexafluoro-2,4-pentanedionato) dioxouranium-di-n-butyl sulfoxide is described utilizing electron impact (EI) and methane chemical ionization (CI) ion sources. All major ions are tentatively identified and the potential usefulness of this complex for determining uranium isotope /sup 235/U//sup 238/U abundance is demonstrated.

Reutter, D.J.; Hardy, D.R.

1981-01-01T23:59:59.000Z

414

NOTE SUR LES EFFETS DE L'INFUSION PERMANENTE D'UN MLANGE D'ACIDES GRAS VOLATILS DANS LE  

E-Print Network [OSTI]

NOTE SUR LES EFFETS DE L'INFUSION PERMANENTE D'UN M�LANGE D'ACIDES GRAS VOLATILS DANS LE RUMEN DU problèmes techniques : infusion permanente et prolongée, dans le rumen, de quantités d'acides gras volatils début de l'infusion, les veaux étaient âgés d'environ 4 mois et pesaient respectivement 95 et 80 kg

Paris-Sud XI, Université de

415

Organic photovoltaics and concentrators  

E-Print Network [OSTI]

The separation of light harvesting and charge generation offers several advantages in the design of organic photovoltaics and organic solar concentrators for the ultimate end goal of achieving a lower cost solar electric ...

Mapel, Jonathan King

2008-01-01T23:59:59.000Z

416

Organic photosensitive devices  

DOE Patents [OSTI]

The present invention generally relates to organic photosensitive optoelectronic devices. More specifically, it is directed to organic photosensitive optoelectronic devices having a photoactive organic region containing encapsulated nanoparticles that exhibit plasmon resonances. An enhancement of the incident optical field is achieved via surface plasmon polariton resonances. This enhancement increases the absorption of incident light, leading to a more efficient device.

Rand, Barry P; Forrest, Stephen R

2013-11-26T23:59:59.000Z

417

The origin of complex organic molecules in prestellar cores  

E-Print Network [OSTI]

Complex organic molecules (COMs) have been detected in a variety of environments, including cold prestellar cores. Given the low temperature of these objects, these last detections challenge existing models. We report here new observations towards the prestellar core L1544. They are based on an unbiased spectral survey of the 3mm band at the IRAM-30m telescope, as part of the Large Program ASAI. The observations allow us to provide the full census of the oxygen bearing COMs in this source. We detected tricarbon monoxide, methanol, acetaldehyde, formic acid, ketene, and propyne with abundances varying from 5e-11 to 6e-9. The non-LTE analysis of the methanol lines shows that they are likely emitted at the border of the core, at a radius of ~8000 AU where T~10 K and nH2~2e4 cm-3. Previous works have shown that water vapour is enhanced in the same region because of the photodesorption of water ices. We propose that a non-thermal desorption mechanism is also responsible for the observed emission of methanol and CO...

Vastel, Charlotte; Lefloch, Bertrand; Bachiller, Raphael

2014-01-01T23:59:59.000Z

418

Integrated Removal of NOx with Carbon Monoxide as Reductant, and Capture of Mercury in a Low Temperature Selective Catalytic and Adsorptive Reactor  

SciTech Connect (OSTI)

Coal will likely continue to be a dominant component of power generation in the foreseeable future. This project addresses the issue of environmental compliance for two important pollutants: NO{sub x} and mercury. Integration of emission control units is in principle possible through a Low Temperature Selective Catalytic and Adsorptive Reactor (LTSCAR) in which NO{sub x} removal is achieved in a traditional SCR mode but at low temperature, and, uniquely, using carbon monoxide as a reductant. The capture of mercury is integrated into the same process unit. Such an arrangement would reduce mercury removal costs significantly, and provide improved control for the ultimate disposal of mercury. The work completed in this project demonstrates that the use of CO as a reductant in LTSCR is technically feasible using supported manganese oxide catalysts, that the simultaneous warm-gas capture of elemental and oxidized mercury is technically feasible using both nanostructured chelating adsorbents and ceria-titania-based materials, and that integrated removal of mercury and NO{sub x} is technically feasible using ceria-titania-based materials.

Neville Pinto; Panagiotis Smirniotis; Stephen Thiel

2010-08-31T23:59:59.000Z

419

Studies on the sulfur poisoning of Ru-RuO{sub x}/TiO{sub 2} catalyst for the adsorption and methanation of carbon monoxide  

SciTech Connect (OSTI)

The effects of sulfur poisoning on the chemisorption and on the methanation of carbon monoxide over Ru/TiO{sub 2} catalyst were investigated by FTIR spectroscopy and volumetric gas adsorption measurements. The CS{sub 2} molecules are {eta}` bonded to Ru sites through one of the sulfur atoms and decompose to the constituent elements on thermal activation. Each S atom may deactivate 3 to 10 metal sites even at low coverages, the effect being more pronounced on the chemisorption of hydrogen. The deposited sulfur (and possibly carbon also) sterically hinders the formation of certain multicarbonyl and monocarbonyl species (vCO in 2055-2140 cm{sup -1} region), which otherwise transform to methane via surface methylene groups in the presence of chemisorbed hydrogen and are found to play an important role in the low-temperature methanation activity of the studied catalyst. The Ru-CO species giving rise to lower frequency vibrational bands are affected to a lesser extent. The presence of sulfur also results in the development of some new CO binding states which are weak and are identified with the CO and S coadsorbed at Ru sites of different oxidation states or of varying crystallographic nature. The CO adsorbed in these states is not reactive to hydrogen. 45 refs., 9 figs., 1 tab.

Kamble, V.S.; Londhe, V.P.; Gupta, N.M. [Bhambha Atomic Research centre, Bombay (India)] [and others] [Bhambha Atomic Research centre, Bombay (India); and others

1996-02-01T23:59:59.000Z

420

The development and deployment of a ground-based, laser-induced fluorescence instrument for the in situ detection of iodine monoxide radicals  

SciTech Connect (OSTI)

High abundances of iodine monoxide (IO) are known to exist and to participate in local photochemistry of the marine boundary layer. Of particular interest are the roles IO plays in the formation of new particles in coastal marine environments and in depletion episodes of ozone and mercury in the Arctic polar spring. This paper describes a ground-based instrument that measures IO at mixing ratios less than one part in 10{sup 12}. The IO radical is measured by detecting laser-induced fluorescence at wavelengths longer that 500 nm. Tunable visible light is used to pump the A{sup 2}?{sub 3/2} (v{sup ?} = 2) ? X{sup 2}?{sub 3/2} (v{sup ?} = 0) transition of IO near 445 nm. The laser light is produced by a solid-state, Nd:YAG-pumped Ti:Sapphire laser at 5 kHz repetition rate. The laser-induced fluorescence instrument performs reliably with very high signal-to-noise ratios (>10) achieved in short integration times (<1 min). The observations from a validation deployment to the Shoals Marine Lab on Appledore Island, ME are presented and are broadly consistent with in situ observations from European Coastal Sites. Mixing ratios ranged from the instrumental detection limit (<1 pptv) to 10 pptv. These data represent the first in situ point measurements of IO in North America.

Thurlow, M. E., E-mail: thurlow@huarp.harvard.edu; Hannun, R. A.; Lapson, L. B.; Anderson, J. G. [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States)] [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States); Co, D. T. [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States) [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States); Argonne-Northwestern Solar Energy Research Center and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113 (United States); O'Brien, A. S. [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States) [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States); Department of Civil and Environmental Engineering, Princeton University, Princeton, New Jersey 08544 (United States); Hanisco, T. F. [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States) [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States); NASA Goddard Space Flight Center, Code 614, Greenbelt, Maryland 20771 (United States)

2014-04-15T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Total Organic Carbon Analyzer | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Total Organic Carbon Analyzer Total Organic Carbon Analyzer The carbon analyzer is used to analyze total carbon (TC), inorganic carbon (IC), total organic carbon (TOC), purgeable...

422

Effets d'infusions d'un mlange complet d'acides gras volatils en cours de repas sur la prise alimentaire de vaches taries  

E-Print Network [OSTI]

Effets d'infusions d'un mĂ©lange complet d'acides gras volatils en cours de repas sur la prise-Gilles, 35590 L'Hermitage, France Summary ― Infusions of 3 or 6 mol of a volatile fatty acid mixture dĂ©pressifs des infusions d'acides gras volatils (AGV) dans le rumen sur l'ingestion d'aliments ont Ă©tĂ©

Paris-Sud XI, Université de

423

Air emissions inventory for the Idaho National Engineering Laboratory -- 1995 emissions report  

SciTech Connect (OSTI)

This report presents the 1995 update of the Air Emission Inventory for the Idaho National Engineering Laboratory (INEL). The INEL Air Emission Inventory documents sources and emissions of non-radionuclide pollutants from operations at the INEL. The report describes the emission inventory process and all of the sources at the INEL, and provides non-radionuclide emissions estimates for stationary sources. The air contaminants reported include nitrogen oxides, sulfur oxides, carbon monoxide, volatile organic compounds, particulates, and hazardous air pollutants (HAPs).

NONE

1996-06-01T23:59:59.000Z

424

Photo-activated luminescence sensor and method of detecting trichloroethylene and related volatile organochloride compounds  

DOE Patents [OSTI]

A sensor for detecting trichloroethylene and related volatile organochloride compounds uses a photo-activator that produces a photo-product complex with the contaminant. Characteristics of the light emitted from the complex will indicate the presence of the contaminant. A probe containing the photo-activator has an excitation light interface and a contaminant interface. One particular embodiment uses a porous membrane as the contaminant interface, so that the contaminant can migrate therethrough to the photo-activator and thereby form the complex.

Dinh, Tuan V. (Knoxville, TN)

1996-01-01T23:59:59.000Z

425

Photo-activated luminescence sensor and method of detecting trichloroethylene and related volatile organochloride compounds  

DOE Patents [OSTI]

A sensor for detecting trichloroethylene and related volatile organochloride compounds uses a photo-activator that produces a photo-product complex with the contaminant. Characteristics of the light emitted from the complex will indicate the presence of the contaminant. A probe containing the photo-activator has an excitation light interface and a contaminant interface. One particular embodiment uses a porous membrane as the contaminant interface, so that the contaminant can migrate there through to the photo-activator and thereby form the complex. 23 figs.

Dinh, T.V.

1996-06-11T23:59:59.000Z

426

Organic vapor jet printing system  

DOE Patents [OSTI]

An organic vapor jet printing system includes a pump for increasing the pressure of an organic flux.

Forrest, Stephen R

2012-10-23T23:59:59.000Z

427

Effective Presentations Organization  

E-Print Network [OSTI]

1 Pericles Effective Presentations · Content · Organization · Delivery · Visual aids and graphics Be brave Graphics · KISS · Powerpoint: ­ Font · Bigger than you'd expect · San serif ­ Lines · Thicker than · Organization · Energy · Clarity · Poise Key: Practice Web Resources · http

Shull, David H.

428

Field-usable portable analyzer for chlorinated organic compounds  

SciTech Connect (OSTI)

In 1992, a chemical sensor was developed which showed almost perfect selectivity to vapors of chlorinated solvents. When interfaced to an instrument, a chemical analyzer will be produced that has near- absolute selectivity to vapors of volatile chlorinated organic compounds. TRI has just completed the second of a 2-phase program to develop this new instrument system, which is called the RCL MONITOR. In Phase II, this instrument was deployed in 5 EM40 operations. Phase II applications covered clean-up process monitoring, environmental modeling, routine monitoring, health and safety, and technology validation. Vapor levels between 0 and 100 ppM can be determined in 90 s with a lower detection limit of 0.5 ppM using the hand-portable instrument. Based on the favorable performance of the RCL MONITOR, the commercial instrument was released for commercial sales on Sept. 20, 1996.

Buttner, W.J.; Penrose, W.R.; Stetter, J.R.; Williams, R.D.

1996-12-31T23:59:59.000Z

429

FTIR study of carbon monoxide oxidation and scrambling at room temperature over copper supported on ZnO and TiO{sub 2} No. 1  

SciTech Connect (OSTI)

An FTIR and quadrupole mass spectroscopic study of CO adsorption and oxidation with {sup 16}O{sub 2} and {sup 18}O{sub 2} on copper supported on ZnO and TiO{sub 2} is presented. The experimental results indicate that CO is adsorbed on the metallic particles dispersed on both oxides on two kinds of sites, on the normal terrace sites and on sites at the borderline of the particles. Moreover, on titania, a band at 2126 cm{sup -1}, assigned to CO adsorbed on isolated Cu atoms and/or on two-dimensional small clusters, is detected. A frequency shift of the bands of CO adsorbed on the metallic particles observed in the CO-O{sub 2} coadsorption experiments and the occurrence of a scrambling reaction between CO and {sup 18}O{sub 2} reveal that on all these samples, there are metallic sites which are able to adsorb at the same time oxygen atoms and carbon monoxide. Carbon dioxide and carbonate-like species are formed: the asymmetric stretching frequencies of CO{sub 2} and the quadrupole mass spectroscopic analysis reveal that with {sup 18}O{sub 2}, different isotopic molecular CO{sub 2}`s are formed, while the carbonate-like species have the same frequencies of those produced in {sup 16}O{sub 2}. Moreover, these species are completely lacking in the absence of oxygen in the gas phase. The experimental results indicate the there are, on these samples, two independent pathways for the CO oxidation, a direct oxidation of CO at the surface of the metallic particles and an induced oxidation with the surface lattice oxygen species of the supports. 46 refs., 8 figs.

Baccuzzi, F.; Chiorino, A. [Universita di Torino (Italy)] [Universita di Torino (Italy)

1996-02-29T23:59:59.000Z

430

Extending surface-enhanced Raman spectroscopy to transition-metal surfaces: carbon monoxide adsorption and electrooxidation on platinum- and palladium-coated gold electrodes  

SciTech Connect (OSTI)

Thin (ca. one to three monolayers) films of platinum and palladium electrodeposited on electrochemically roughened gold are observed to yield surface-enhanced Raman (SER) spectra for adsorbed carbon monoxide. The major vibrational band(s) on these surfaces are diagnosed from their frequencies as arising from C-O stretching vibrations, nu/sub CO/ bound to the transition-metal overlayers rather than to residual gold sites. The observed SFR nu/sub CO/ frequencies are closely similar to (within ca. 10 cm/sup -1/ of) those obtained for these systems from potential-difference infrared (PDIR) spectra. The major SERS and PDIR nu/sub CO/ features for the platinum and palladium surfaces appear at 2060-2090 and 1965-1985 cm/sup -1/, respectively, consistent with the presence of terminal and bridging CO on these two electrodes. The infrared as well as electrochemical properties of these systems are closely similar to those for the corresponding polycrystalline bulk electrodes. A difference between the SER- and IR-active adsorbed CO, however, is that the former undergoes electrooxidation on both surfaces at 0.2-0.3 V higher overpotentials than the latter form. Examination of the potential-dependent SERS bands for metal oxide vibrations, nu/sub PtO/, on the platinum surface shows that the electrooxidation potential for the SERS-active adsorbed CO coincides with that for the appearance of the nu/sub PtO/ band. Some broader implications to the utilization of SERS for examining transition-metal surfaces are pointed out.

Leung, L.W.H.; Weaver, M.J.

1987-08-19T23:59:59.000Z

431

An assessment of methyl mercury and volatile mercury in land-applied sewage sludge  

SciTech Connect (OSTI)

In 1993, the US Environmental Protection Agency issued regulations covering the land-application of municipal sewage sludge. These regulations established maximum pollutant concentrations and were based upon a risk assessment of human exposure. Mercury, assumed to be inorganic and non-volatile, was one pollutant evaluated. From April, 1995 through February, 1996, the authors studied the species of mercury contaminating municipal sludge applied to land, and the potential for volatilization of mercury from land-applied sludge. Methyl mercury was found at 0.1% of total mercury concentrations and was emitted from land-applied sludge to the atmosphere. Elemental mercury (Hg) was formed in land-applied sludge via the reduction of oxidized mercury and was also emitted to the atmosphere. Hg emission from land-applied sludge was significantly elevated over background soil emission. Methyl mercury is more toxic and more highly bioaccumulated than inorganic mercury, and warrants assessment considering these special criteria. Additionally, mercury emission from sludge-amended soil may lead to the contamination of other environmental media with significant concentrations of the metal. Although these pathways were not evaluated in the regulatory risk assessment, they are an important consideration for evaluating the risks from mercury in land-applied sludge. This presentation will summarize the results of a re-assessment of US EPA regulations regarding the land-application of municipal sewage sludge using data on methyl mercury toxicity and mercury transport in the atmosphere.

Carpi, A. [Cornell Univ., Ithaca, NY (United States); Lindberg, S.E. [Oak Ridge National Lab., TN (United States)

1995-12-31T23:59:59.000Z

432

Volatile abundances in submarine glasses from the North Fiji and Lau back-arc basins  

SciTech Connect (OSTI)

Glasses from submarine lavas of the North Fiji and lau back-arc basins were analyzed by high-temperature mass spectrometry for volatiles. Abundances for H{sub 2}O, Cl, F, S and CO{sub 2} in glasses ranging in composition from depleted, primitive MORB to enriched, transitional tholeiites are reported. The samples divide into three groups based on K{sub 2}O vs. H{sub 2}O, Ba/Zr vs. H{sub 2}O and K{sub 2}O/H{sub 2}O vs. P{sub 2}O{sub 5}/H{sub 2}O variation diagrams. At similar Mg No., the least evolved samples studied are nearly identical to N-type MORB in H{sub 2}O abundances but show Cl contents enriched by a factor of 5. More enriched samples, classified as back-arc basin basalts (BABB) on the basis of major/trace elements and isotopes, are not as hydrous (at similar Mg No.) as those from the Mariana and East Scotia Sea back-arc basins. The data indicate that not all back-arc basins erupt lavas with the distinct volatile and other elemental characteristics of lavas from the Mariana Trough and Scotia Sea.

Aggrey, K.E.; Muenow, D.W.; Sinton, J.M. (Univ. of Hawaii, Honolulu (USA))

1988-10-01T23:59:59.000Z

433

Organic Separation Test Results  

SciTech Connect (OSTI)

Separable organics have been defined as “those organic compounds of very limited solubility in the bulk waste and that can form a separate liquid phase or layer” (Smalley and Nguyen 2013), and result from three main solvent extraction processes: U Plant Uranium Recovery Process, B Plant Waste Fractionation Process, and Plutonium Uranium Extraction (PUREX) Process. The primary organic solvents associated with tank solids are TBP, D2EHPA, and NPH. There is concern that, while this organic material is bound to the sludge particles as it is stored in the tanks, waste feed delivery activities, specifically transfer pump and mixer pump operations, could cause the organics to form a separated layer in the tank farms feed tank. Therefore, Washington River Protection Solutions (WRPS) is experimentally evaluating the potential of organic solvents separating from the tank solids (sludge) during waste feed delivery activities, specifically the waste mixing and transfer processes. Given the Hanford Tank Waste Treatment and Immobilization Plant (WTP) waste acceptance criteria per the Waste Feed Acceptance Criteria document (24590-WTP-RPT-MGT-11-014) that there is to be “no visible layer” of separable organics in the waste feed, this would result in the batch being unacceptable to transfer to WTP. This study is of particular importance to WRPS because of these WTP requirements.

Russell, Renee L.; Rinehart, Donald E.; Peterson, Reid A.

2014-09-22T23:59:59.000Z

434

Stable isotopic investigations of in situ bioremediation of chlorinated organic solvents. 1997 annual progress report  

SciTech Connect (OSTI)

'The author has made significant progress in developing innovative methods for investigating the mechanism and extent of in situ bioremediation of chlorinated organic solvents. These methods use precise isotopic ratio measurements of chlorine and carbon in reactant and product species in laboratory experiments and in materials from field demonstration sites. Specific tasks completed during FY 1997 include: (1) refinement and publication of a new analytical method for precise determination of chlorine and carbon isotope ratios in chlorinated volatile organic compounds; (2) laboratory experiments involving biological degradation of chlorinated solvents in liquid cultures and soil columns; and (3) use of chlorine and carbon isotope ratios to investigate natural attenuation of trichloroethene at the Paducah Gaseous Diffusion Plant. This work can have immediate impact because it will provide the fundamental basis for a new and cost-effective means of evaluating and monitoring the effectiveness of in situ bioremediation schemes for chlorinated organic solvents in soils, vadose horizons, and groundwater plumes.'

Sturchio, N.C.

1997-01-01T23:59:59.000Z

435

Departmental Organization Management System  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Public Law 95-91, 42 United States Code 7101, Department of Energy Organization Act, Section 642 gives to the Secretary of the Department of Energy the responsibility to approve organization changes affecting the number, designation, or mission of Departmental Elements and to approve the addition, deletion, or transfer of missions and/or functions of or between Departmental Elements. In order to streamline the organizational change process, the Secretary has delegate to the Heads of Departmental Headquarters and Field Elements the authority to approve organization changes. No cancellations.

1996-08-27T23:59:59.000Z

436

Effets sur la digestion et le mtabolisme des vaches laitires d'infusions d'acides gras volatils dans le rumen  

E-Print Network [OSTI]

Effets sur la digestion et le métabolisme des vaches laitières d'infusions d'acides gras volatils.N.R.A., Saint-Gilles, 35590, L'Hermitage, France. Summary. Effects of !uminal infusion of volatile fatty acids and duodenal infusion of caseinate on digestion and metabolism in the dairy cow. II. - General and mammary

Paris-Sud XI, Université de

437

Effets sur la digestion et le mtabolisme des vaches laitires d'infusions d'acides gras volatils dans le rumen  

E-Print Network [OSTI]

Effets sur la digestion et le métabolisme des vaches laitières d'infusions d'acides gras volatils.N.R.A. Saint-Gilles, 35590 L'Hermitage, France Summary. Effects of ruminal infusion of volatile fatty acids and duodenal infusion of casei- nate on digestion and metabolism in the dairy cow. l. - Production

Paris-Sud XI, Université de

438

Chemisorption and catalysis by metal clusters. II. Chemisorption of carbon monoxide and of oxygen by supported osmium clusters derived from Os/sub 3/(CO)/sub 12/ and from Os/sub 6/(CO)/sub 18/  

SciTech Connect (OSTI)

Carbon monoxide and oxygen have been chemisorbed at 293 K on the high-nuclearity carbonyl-protected clusters (the various species A) obtained by heating in vacuo to 523 K Os/sub 3/(CO)/sub 12/ or Os/sub 6/(CO)/sub 18/ impregnated on silica, alumina, or titania. The adsorption isotherms have a conventional appearance, but most are composed of a primary and a secondary region. Material adsorbed in the secondary region is removed by evacuation at room temperature whereas that adsorbed in the primary region is removed by evacuation at elevated temperatures. For species A/alumina and the species A/titania the primary region is complete and the secondary region commences when the pressure over the adsorbent is 0.2 Torr. Species A/silica gave no secondary region in oxygen adsorption. Adsorption and subsequent temperature-programmed desorption of (/sup 18/O)CO occurred without any dilution by (/sup 16/O)CO, indicating that ligand-(/sup 16/O)CO and adsorbed-(/sup 18/O)CO do not exchange even at elevated temperatures. The two species A/aluminas catalyzed oxygen isotope exchange at 293 K. From the experimental evidence it is deduced that carbon monoxide and oxygen each adsorbs molecularly in both the primary and the secondary regions. In the primary region carbon monoxide adsorption occurs at osmium sites on the cluster framework, whereas in the secondary region it occurs at ligand-carbon bonded to osmium. For oxygen, adsorption in the primary region is again at osmium sites on the cluster framework but that in the secondary region is at osmium sites of the cluster framework suitably modified as a result of the support-cluster interaction.

Hunt, D.J.; Jackson, S.D.; Moyes, R.B.; Wells, P.B.; Whyman, R.

1984-04-01T23:59:59.000Z

439

Organic Photovoltaics Research  

Broader source: Energy.gov [DOE]

DOE funds research and development projects related to organic photovoltaics (OPV) due to the unique benefits it offers. Below are a list of the projects, summary of the benefits, and discussion on...

440

Organization | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehicles »Exchange VisitorsforDepartment ofNoOrganization Organization View

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


441

Organic contaminant separator  

DOE Patents [OSTI]

A process is presented of sample preparation prior to analysis for the concentration of an organic contaminant in an aqueous medium by (a) passing an initial aqueous medium including a minor amount of the organic contaminant through a composite tube comprised of a blend of a polyolefin and a polyester, the composite tube having an internal diameter of from about 0.1 to about 2.0 millimeters and being of sufficient length to permit the organic contaminant to adhere to the composite tube, (b) passing a solvent through the composite tube. The solvent is capable of separating the adhered organic contaminant from the composite tube. Further, an extraction apparatus is presented for sample preparation prior to analysis for the concentration of an organic contaminant in an aqueous medium. The apparatus includes a composite tube comprised of a blend of a polyolefin and a polyester. The composite tube has an internal diameter of from about 0.1 to about 2.0 millimeters and has sufficient length to permit an organic contaminant contained within an aqueous medium passed therethrough to adhere to the composite tube. 2 figures.

Del Mar, P.

1993-12-28T23:59:59.000Z

442

Eco-friendly driven remediation of the indoor air environment: the synthesis of novel transition metal doped titania/silica aerogels for degradation of volatile and semi-volatile organic compounds.  

E-Print Network [OSTI]

??Remediation of the indoor environment led to the development of novel catalysts which can absorb light in the visible range. These catalysts were prepared using… (more)

Baker, Schuyler Denton

2012-01-01T23:59:59.000Z

443

Clathration of Volatiles in the Solar Nebula and Implications for the Origin of Titan's atmosphere  

E-Print Network [OSTI]

We describe a scenario of Titan's formation matching the constraints imposed by its current atmospheric composition. Assuming that the abundances of all elements, including oxygen, are solar in the outer nebula, we show that the icy planetesimals were agglomerated in the feeding zone of Saturn from a mixture of clathrates with multiple guest species, so-called stochiometric hydrates such as ammonia hydrate, and pure condensates. We also use a statistical thermodynamic approach to constrain the composition of multiple guest clathrates formed in the solar nebula. We then infer that krypton and xenon, that are expected to condense in the 20-30 K temperature range in the solar nebula, are trapped in clathrates at higher temperatures than 50 K. Once formed, these ices either were accreted by Saturn or remained embedded in its surrounding subnebula until they found their way into the regular satellites growing around Saturn. In order to explain the carbon monoxide and primordial argon deficiencies of Titan's atmosphere, we suggest that the satellite was formed from icy planetesimals initially produced in the solar nebula and that were partially devolatilized at a temperature not exceeding 50 K during their migration within Saturn's subnebula. The observed deficiencies of Titan's atmosphere in krypton and xenon could result from other processes that may have occurred both prior or after the completion of Titan. Thus, krypton and xenon may have been sequestrated in the form of XH3+ complexes in the solar nebula gas phase, causing the formation of noble gas-poor planetesimals ultimately accreted by Titan. Alternatively, krypton and xenon may have also been trapped efficiently in clathrates located on the satellite's surface or in its atmospheric haze.

Olivier Mousis; Jonathan I. Lunine; Caroline Thomas; Matthew Pasek; Ulysse Marboeuf; Yann Alibert; Vincent Ballenegger; Daniel Cordier; Yves Ellinger; Francoise Pauzat; Sylvain Picaud

2008-10-01T23:59:59.000Z

444

UniFI: Leveraging Non-Volatile Memories for a Unified Fault Tolerance and Idle Power Management Technique  

E-Print Network [OSTI]

dissipation but also to make power - proportional to performance by managing idle power. The twin challenges noise margins and thermal cycling [42]. Technology scaling and power management both impact systemUniFI: Leveraging Non-Volatile Memories for a Unified Fault Tolerance and Idle Power Management

Wood, David A.

445

Effects of digestive infusions of volatile fatty acids or glucose on food intake in lactating or dry cows  

E-Print Network [OSTI]

Effects of digestive infusions of volatile fatty acids or glucose on food intake in lactating lactating (30 kg of milk/d) and 3 non pregnant dry dairy cows. The effect of each energetic infusion) control solutions of VFA and glucose treatments were infused at the same vol, pH and osmolarity

Paris-Sud XI, Université de

446

Fluid saturation and volatile partitioning between melts and hydrous fluids in crustal magmatic systems: The contribution of experimental measurements and  

E-Print Network [OSTI]

systems, experimental results on the solubility and partitioning of H2O, CO2, S, Cl, F and a few other systems: The contribution of experimental measurements and solubility models Don R. Baker a, , Marina 2012 Keywords: Magmatic volatiles Solubility Water Carbon dioxide Sulfur Halogens This work reviews

Long, Bernard

447

Estimation of Volatility The values of the parameters r, t, St, T, and K used to price a call op-  

E-Print Network [OSTI]

is the price of light sweet crude oil futures traded on the New York Mercantile Exchange (NYMEX), basedChapter 7 Estimation of Volatility The values of the parameters r, t, St, T, and K used to price in the stock price model dSt St = µdt + dBt. A natural estimator for the trend parameter µ can be written as ^µ

Privault, Nicolas

448

Forecasting the conditional volatility of oil spot and futures prices with structural breaks and long memory models  

E-Print Network [OSTI]

Forecasting the conditional volatility of oil spot and futures prices with structural breaks of oil spot and futures prices using three GARCH-type models, i.e., linear GARCH, GARCH with structural that oil price fluctuations influence economic activity and financial sector (e.g., Jones and Kaul, 1996

Paris-Sud XI, Université de

449

The Impact of Tax Shocks and Oil Price Volatility on Risk - A Study of North Sea Oilfield Projects   

E-Print Network [OSTI]

We examine the impact of market volatility and increased fiscal take on risk in strategic natural resource projects. An increase in 2006 UK oilfield taxation is used as a natural experiment for assessing the impact of a fiscal increase on oilfield...

Kretzschmar, Gavin Lee; Moles, Peter

2006-01-01T23:59:59.000Z

450

Phytologia (Oct. 1, 2014) 96(4)252 Comparison of volatile leaf terpenoids from Lippia dulcis (Verbenaceae) obtained by steam  

E-Print Network [OSTI]

(Verbenaceae) obtained by steam distillation and pentane liquid extraction Robert P. Adams Biology Department, Prairie View, TX 77446 ABSTRACT Comparison of pentane extraction and steam distillation of intact leaves to be due to the different effects of pentane solvent on intact leaves (vs. steam volatilization

Adams, Robert P.

451

Manmade organic compounds in the surface waters of the United States: A review of current understanding  

SciTech Connect (OSTI)

On the basis of their aqueous solubilities, nonionic organic compounds partition themselves between water, dissolved organic matter, particulate organic matter, and the lipid reservoirs of aquatic organisms. Ionized organic compounds can be adsorbed to sediments, thereby reducing their aqueous concentrations. Transformation processes of photolysis, hydrolysis, biodegradation, and volatilization can attenuate organic compounds, and attenuation rates commonly follow a first-order kinetic process. Eight groups of manmade organic compounds are discussed: (1) polychlorinated biphenyls and organochlorine insecticides; (2) carbamate and organophosphorus; (3) herbicides; (4) phenols; (5) halogenated aliphatic and monocyclic aromatic hydrocarbons; (6) phthalate esters; (7) polychlorinated dibenzo-p-dioxins, and (8) polycyclic aromatic hydrocarbons. For each compound group, data pertaining to use, production, and properties are presented and discussed. Process that influence the environmental fate of each group, as determined primarily through laboratory studies, are reviewed, and important fate process are identified. Environmental concentrations of compounds from each group in water, biota, and sediment are given to demonstrate representative values for comparison to concentrations determined during ongoing research. Finally, where sufficient data exist, regional and temporal contamination trends in the US are discussed. 699 refs., 26 figs., 47 tabs.

Smith, J.A.; Witkowski, P.J.; Fusillo, T.V.

1990-01-01T23:59:59.000Z

452

Abundance ratios of volatile vs. refractory elements in planet-harbouring stars: hints of pollution?  

E-Print Network [OSTI]

We present the [X/H] trends as function of the elemental condensation temperature Tc in 88 planet host stars and in a volume-limited comparison sample of 33 dwarfs without detected planetary companions. We gathered homogeneous abundance results for many volatile and refractory elements spanning a wide range of Tc, from a few dozens to several hundreds kelvin. We investigate possible anomalous trends of planet hosts with respect to comparison sample stars in order to detect evidence of possible pollution events. No significant differences are found in the behaviour of stars with and without planets. This result is in agreement with a ``primordial'' origin of the metal excess in planet host stars. However, a subgroup of 5 planet host and 1 comparison sample stars stands out for having particularly high [X/H] vs. Tc slopes.

A. Ecuvillon; G. Israelian; N. C. Santos; M. Mayor; G. Gilli

2005-12-08T23:59:59.000Z

453

Volatile Delivery to Planets from Water-rich Planetesimals around Low Mass Stars  

E-Print Network [OSTI]

Most models of volatile delivery to accreting terrestrial planets assume that the carriers for water are similar in water content to the carbonaceous chondrites in our Solar System. Here we suggest that the water content of primitive bodies in many planetary systems may actually be much higher, as carbonaceous chondrites have lost some of their original water due to heating from short-lived radioisotopes that drove parent body alteration. Using N-body simulations, we explore how planetary accretion would be different if bodies beyond the water line contained a water mass fraction consistent with chemical equilibrium calculations, and more similar to comets, as opposed to the more traditional water-depleted values. We apply this model to consider planet formation around stars of different masses and identify trends in the properties of Habitable Zone planets and planetary system architecture which could be tested by ongoing exoplanet census data collection. Comparison of such data with the model predicted tren...

Ciesla, Fred J; Pascucci, Ilaria; Apai, Daniel

2015-01-01T23:59:59.000Z

454

Methods for characterizing subsurface volatile contaminants using in-situ sensors  

DOE Patents [OSTI]

An inverse analysis method for characterizing diffusion of vapor from an underground source of volatile contaminant using data taken by an in-situ sensor. The method uses one-dimensional solutions to the diffusion equation in Cartesian, cylindrical, or spherical coordinates for isotropic and homogenous media. If the effective vapor diffusion coefficient is known, then the distance from the source to the in-situ sensor can be estimated by comparing the shape of the predicted time-dependent vapor concentration response curve to the measured response curve. Alternatively, if the source distance is known, then the effective vapor diffusion coefficient can be estimated using the same inverse analysis method. A triangulation technique can be used with multiple sensors to locate the source in two or three dimensions. The in-situ sensor can contain one or more chemiresistor elements housed in a waterproof enclosure with a gas permeable membrane.

Ho, Clifford K. (Albuquerque, NM)

2006-02-21T23:59:59.000Z

455

Modeling Volatile Species Retention Experiments: Interim Progress Report (M3FT-12LA0202053)  

SciTech Connect (OSTI)

Metal nuclear fuel is a candidate transmutation fuel form for advanced fuel cycles. One constituent of the fuel, americium, has a high vapor pressure, and there is a concern that excessive volatility losses of americium will occur during casting of the metal. A number of experiments have been performed using americium and surrogate metals, including experiments slated for FY12, to address the concern. The present task is to model and numerically simulate these experiments. This report describes a system-level model of the relevant experiments that has been developed together with some results. It also describes some initial 3D, full-physics simulations of portions of the experiments that have been performed.

Carlson, Neil N. [Los Alamos National Laboratory

2012-07-06T23:59:59.000Z

456

Methodology for Formulating Diesel Surrogate Fuels with Accurate Compositional, Ignition-Quality, and Volatility Characteristics  

SciTech Connect (OSTI)

In this study, a novel approach was developed to formulate surrogate fuels having characteristics that are representative of diesel fuels produced from real-world refinery streams. Because diesel fuels typically consist of hundreds of compounds, it is difficult to conclusively determine the effects of fuel composition on combustion properties. Surrogate fuels, being simpler representations of these practical fuels, are of interest because they can provide a better understanding of fundamental fuel-composition and property effects on combustion and emissions-formation processes in internal-combustion engines. In addition, the application of surrogate fuels in numerical simulations with accurate vaporization, mixing, and combustion models could revolutionize future engine designs by enabling computational optimization for evolving real fuels. Dependable computational design would not only improve engine function, it would do so at significant cost savings relative to current optimization strategies that rely on physical testing of hardware prototypes. The approach in this study utilized the state-of-the-art techniques of {sup 13}C and {sup 1}H nuclear magnetic resonance spectroscopy and the advanced distillation curve to characterize fuel composition and volatility, respectively. The ignition quality was quantified by the derived cetane number. Two well-characterized, ultra-low-sulfur No.2 diesel reference fuels produced from refinery streams were used as target fuels: a 2007 emissions certification fuel and a Coordinating Research Council (CRC) Fuels for Advanced Combustion Engines (FACE) diesel fuel. A surrogate was created for each target fuel by blending eight pure compounds. The known carbon bond types within the pure compounds, as well as models for the ignition qualities and volatilities of their mixtures, were used in a multiproperty regression algorithm to determine optimal surrogate formulations. The predicted and measured surrogate-fuel properties were quantitatively compared to the measured target-fuel properties, and good agreement was found.

Mueller, C. J.; Cannella, W. J.; Bruno, T. J.; Bunting, B.; Dettman, H. D.; Franz, J. A.; Huber, M. L.; Natarajan, M.; Pitz, W. J.; Ratcliff, M. A.; Wright, K.

2012-06-21T23:59:59.000Z

457

Organic aerogel microspheres  

DOE Patents [OSTI]

Organic aerogel microspheres are disclosed which can be used in capacitors, batteries, thermal insulation, adsorption/filtration media, and chromatographic packings, having diameters ranging from about 1 micron to about 3 mm. The microspheres can be pyrolyzed to form carbon aerogel microspheres. This method involves stirring the aqueous organic phase in mineral oil at elevated temperature until the dispersed organic phase polymerizes and forms nonstick gel spheres. The size of the microspheres depends on the collision rate of the liquid droplets and the reaction rate of the monomers from which the aqueous solution is formed. The collision rate is governed by the volume ratio of the aqueous solution to the mineral oil and the shear rate, while the reaction rate is governed by the chemical formulation and the curing temperature.

Mayer, S.T.; Kong, F.M.; Pekala, R.W.; Kaschmitter, J.L.

1999-06-01T23:59:59.000Z

458

Organic aerogel microspheres  

DOE Patents [OSTI]

Organic aerogel microspheres which can be used in capacitors, batteries, thermal insulation, adsorption/filtration media, and chromatographic packings, having diameters ranging from about 1 micron to about 3 mm. The microspheres can be pyrolyzed to form carbon aerogel microspheres. This method involves stirring the aqueous organic phase in mineral oil at elevated temperature until the dispersed organic phase polymerizes and forms nonsticky gel spheres. The size of the microspheres depends on the collision rate of the liquid droplets and the reaction rate of the monomers from which the aqueous solution is formed. The collision rate is governed by the volume ratio of the aqueous solution to the mineral oil and the shear rate, while the reaction rate is governed by the chemical formulation and the curing temperature.

Mayer, Steven T. (San Leandro, CA); Kong, Fung-Ming (Pleasanton, CA); Pekala, Richard W. (Pleasant Hill, CA); Kaschmitter, James L. (Pleasanton, CA)

1999-01-01T23:59:59.000Z

459

FTIR study of hydrogen and carbon monoxide adsorption on Pt/TiO{sub 2}, Pt/ZrO{sub 2}, and Pt/Al{sub 2}O{sub 3}  

SciTech Connect (OSTI)

The Pt/TiO{sub 2}, Pt/ZrO{sub 2}, and Pt/Al{sub 2}O{sub 3} catalysts submitted to low-temperature reduction (LTR,200 C) and high-temperature reduction (HTR, 500 C) and exposed to hydrogen and carbon monoxide at room temperature were studied by infrared spectroscopy. There is a strong loss of transmission in the entire infrared spectra on Pt/TiO{sub 2} after its exposure to hydrogen, which is related to the reducibility of the support. A typical SMSI behavior (strong metal-support interaction), such as the decrease in carbon monoxide adsorption capacity, was detected on Pt/TiO{sub 2} and Pt/ZrO{sub 2} after exposure to hydrogen, even for the catalysts submitted to LTR treatment. Also a carbonyl band shift to lower wavenumber was observed on LTR-treated Pt/TiO{sub 2}, Pt/ZrO{sub 2}, and Pt/Al{sub 2}O{sub 3} after exposure to hydrogen. The authors interpreted this SMSI behavior as an electronic rather than morphological effect, which was induced by the presence of hydrogen spillover.

Benvenutti, E.V.; Franken, L.; Moro, C.C.; Davanzo, C.U.

1999-11-09T23:59:59.000Z

460

Sludge organics bioavailability  

SciTech Connect (OSTI)

Concern over the bioavailability of toxic organics that can occur in municipal sludges threatens routine land application of sludge. Available data, however, show that concentrations of priority organics in normal sludges are low. Sludges applied at agronomic rates yield chemical concentrations in soil-sludge mixtures 50 to 100 fold lower. Plant uptake at these pollutant concentrations (and at much higher concentrations) is minimal. Chemicals are either (1) accumulated at extremely low levels (PCBs), (2) possibly accumulated, but then rapidly metabolized within plants to extremely low levels (DEHP), or (3) likely degraded so rapidly in soil that only minor contamination occurs (PCP and 2,4-DNP).

Eiceman, G.E.; Bellin, C.A.; Ryan, J.A.; O'Connor, G.A.

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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

Sandia National Laboratories: carbon monoxide  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1development Sandia, NREL Release Wavearc-faultbest

462

Requestor's Name: Organization  

E-Print Network [OSTI]

Requestor's Name: Organization: Address: (No PO BOX) City, State, Zip: Cell: Phone: Fax: E showing major natural gas pipelines identified by owner and pipe diameter. 6) California Wind Resource Annual Wind Speed, Annual Wind Power, and Seasonal Wind Speed measured at various elevations (meters

463

Organic solvent topical report  

SciTech Connect (OSTI)

This report is the technical basis for the accident and consequence analyses used in the Hanford Tank Farms Basis for Interim Operation. The report also contains the scientific and engineering information and reference material needed to understand the organic solvent safety issue. This report includes comments received from the Chemical Reactions Subcommittee of the Tank Advisory Panel.

Cowley, W.L.

1998-04-30T23:59:59.000Z

464

REPRESENTATIONS & CERTIFICATIONS ORGANIZATION: PHONE  

E-Print Network [OSTI]

or Agreement. 1. Labor Surplus Area: Offeror ___ will ___ will not, perform the work in an area classified labor surplus area; or (3) ___ substantial labor surplus area. 2. Type of Business Organization: Offeror Business Concern", means a small business concern that (1) is at least 51 percent unconditionally owned

Groppi, Christopher

465

CCPPolicyBriefing Organization  

E-Print Network [OSTI]

BACKGROUND · Modern cartels are well-organized with sophisticated organizational structures. Disclosing to confidentiality, details on the organizational form of cracked cartels are rarely disclosed. · Theoretical to facilitating collusion. · Moreover, the efficiency gains of delegation in facilitating collusion can

Feigon, Brooke

466

DESTRUCTION TECHNOLOGY DEMONSTRATION FOR ORGANICS IN TRANSURANIC WASTE  

SciTech Connect (OSTI)

General Atomics (GA) has recently completed a Phase I program for the development of a two-step alternative to incineration for the destruction of organics in transuranic wastes at the Savannah River Site. This process is known as thermal desorption-supercritical water oxidation, or TD-SCWO. The GA TD process uses heat to volatilize and transport organics from the waste material for subsequent treatment by SCWO. SCWO oxidizes organics in a steam medium at elevated temperatures and pressures in a manner that achieves excellent destruction efficiencies and compliance with all environmental requirements without the need for complex pollution-abatement equipment. This application of TD-SCWO is focused on a full-scale batch process for 55-gallon drums of mixed transuranic waste at the Savannah River Site. The Phase I reduced-scale test results show that the process operates as intended on surrogate waste matrices chosen to be representative of Savannah River Site transuranic mixed wastes. It provides a high degree of hydrogen removal and full containment of the radionuclide surrogate, with minimal requirements for pre-treatment and post-treatment. Other test objectives were to verify that the process produces no dioxins or furans, and meets all applicable regulatory criteria for retention of toxic metals, particulate, and criteria pollutants, while meeting WIPP/WAC and TRUPACT-II requirements. Thermal desorption of surrogate SRS mixed wastes at 500 psi and 1000 F met all tested requirements for WIPP/WAC and TRUPACT-II. SCWO of the desorbed surrogate organic materials at 500 psi and 1500 F also appears to meet all requirements for a nonincineration alternative, although >99.99% DRE for chlorinated solvents has not yet been demonstrated.

Mike Spritzer

2003-02-01T23:59:59.000Z

467

Methodology for Formulating Diesel Surrogate Fuels with Accurate Compositional, Ignition-Quality, and Volatility Characteristics  

SciTech Connect (OSTI)

In this study, a novel approach was developed to formulate surrogate fuels having characteristics that are representative of diesel fuels produced from real-world refinery streams. Because diesel fuels typically consist of hundreds of compounds, it is difficult to conclusively determine the effects of fuel composition on combustion properties. Surrogate fuels, being simpler representations of these practical fuels, are of interest because they can provide a better understanding of fundamental fuel-composition and property effects on combustion and emissions-formation processes in internal-combustion engines. In addition, the application of surrogate fuels in numerical simulations with accurate vaporization, mixing, and combustion models could revolutionize future engine designs by enabling computational optimization for evolving real fuels. Dependable computational design would not only improve engine function, it would do so at significant cost savings relative to current optimization strategies that rely on physical testing of hardware prototypes. The approach in this study utilized the stateof- the-art techniques of 13C and 1H nuclear magnetic resonance spectroscopy and the advanced distillation curve to characterize fuel composition and volatility, respectively. The ignition quality was quantified by the derived cetane number. Two wellcharacterized, ultra-low-sulfur #2 diesel reference fuels produced from refinery streams were used as target fuels: a 2007 emissions certification fuel and a Coordinating Research Council (CRC) Fuels for Advanced Combustion Engines (FACE) diesel fuel. A surrogate was created for each target fuel by blending eight pure compounds. The known carbon bond types within the pure compounds, as well as models for the ignition qualities and volatilities of their mixtures, were used in a multiproperty regression algorithm to determine optimal surrogate formulations. The predicted and measured surrogate-fuel properties were quantitatively compared to the measured target-fuel properties, and good agreement was found. This paper is dedicated to the memory of our friend and colleague Jim Franz. Funding for this research was provided by the U.S. Department of Energy (U.S. DOE) Office of Vehicle Technologies, and by the Coordinating Research Council (CRC) and the companies that employ the CRC members. The study was conducted under the auspices of CRC. The authors thank U.S. DOE program manager Kevin Stork for supporting the participation of the U.S. national laboratories in this study.

Mueller, Charles J.; Cannella, William J.; Bruno, Thomas J.; Bunting, Bruce G.; Dettman, Heather; Franz, James A.; Huber, Marcia L.; Natarajan, Mani; Pitz, William J.; Ratcliff, Matthew A.; Wright, Ken

2012-07-26T23:59:59.000Z

468

Organic solvent topical report  

SciTech Connect (OSTI)

This report provides the basis for closing the organic solvent safety issue. Sufficient information is presented to conclude that risk posed by an organic solvent fire is within risk evaluation guidelines. This report updates information contained in Analysis of Consequences of Postulated Solvent Fires in Hanford Site Waste Tanks. WHC-SD-WM-CN-032. Rev. 0A (Cowley et al. 1996). However, this document will not replace Cowley et al (1996) as the primary reference for the Basis for Interim Operation (BIO) until the recently submitted BIO amendment (Hanson 1999) is approved by the US Department of Energy. This conclusion depends on the use of controls for preventing vehicle fuel fires and for limiting the use of flame cutting in areas where hot metal can fall on the waste surface.The required controls are given in the Tank Waste Remediation System Technical Safety Requirements (Noorani 1997b). This is a significant change from the conclusions presented in Revision 0 of this report. Revision 0 of this calcnote concluded that some organic solvent fire scenarios exceeded risk evaluation guidelines, even with controls imposed.

COWLEY, W.L.

1999-05-13T23:59:59.000Z

469

Method and apparatus for measuring volatile compounds in an aqueous solution  

DOE Patents [OSTI]

The present invention is an improvement to the method and apparatus for measuring volatile compounds in an aqueous solution. The apparatus is a chamber with sides and two ends, where the first end is closed. The chamber contains a solution volume of the aqueous solution and a gas that is trapped within the first end of the chamber above the solution volume. The gas defines a head space within the chamber above the solution volume. The chamber may also be a cup with the second end. open and facing down and submerged in the aqueous solution so that the gas defines the head space within the cup above the solution volume. The cup can also be entirely submerged in the aqueous solution. The second end of the. chamber may be closed such that the chamber can be used while resting on a flat surface such as a bench. The improvement is a sparger for mixing the gas with the solution volume. The sparger can be a rotating element such as a propeller on a shaft or a cavitating impeller. The sparger can also be a pump and nozzle where the pump is a liquid pump and the nozzle is a liquid spray nozzle open, to the head space for spraying the solution volume into the head space of gas. The pump could also be a gas pump and the nozzle a gas nozzle submerged in the solution volume for spraying the head space gas into the solution volume.

Gilmore, Tyler J [Pasco, WA; Cantrell, Kirk J [West Richland, WA

2002-07-16T23:59:59.000Z

470

The sublethal effects of the non volatile water soluble fraction of Southern Louisiana crude oil on the growth of Skeletonema costatum (Greve.) Cleve  

E-Print Network [OSTI]

THE SUBLETHAL EFFECTS OF THE NON VOLATILE WATER SOLUBLE FRACTION OF SOUTHERN LOUISIANA CRUDE OIL ON THE GROWTH OF Skeletonema costatum (GREVE. ) CLEVE A Thesis by SUE MYHRE SCHAUFFLER Submitted to the Graduate College of Texas ~I University... in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1979 Major Subject: Oceanography THE SUBLETHAL EFFECTS OF THE NON VOLATILE WATER SOLUBLE FRACTION OF SOUTHERN LOUISIANA CRUDE OIL ON THE GROWTH OF Skeletonema...

Schauffler, Sue Myhre

1979-01-01T23:59:59.000Z

471

Influence of Wetting and Mass Transfer Properties of Organic Chemical Mixtures in Vadose Zone Materials on Groundwater Contamination by Nonaqueous Phase Liquids  

SciTech Connect (OSTI)

Previous studies have found that organic acids, organic bases, and detergent-like chemicals change surface wettability. The wastewater and NAPL mixtures discharged at the Hanford site contain such chemicals, and their proportions likely change over time due to reaction-facilitated aging. The specific objectives of this work were to (1) determine the effect of organic chemical mixtures on surface wettability, (2) determine the effect of organic chemical mixtures on CCl4 volatilization rates from NAPL, and (3) accurately determine the migration, entrapment, and volatilization of organic chemical mixtures. Five tasks were proposed to achieve the project objectives. These are to (1) prepare representative batches of fresh and aged NAPL-wastewater mixtures, (2) to measure interfacial tension, contact angle, and capillary pressure-saturation profiles for the same mixtures, (3) to measure interphase mass transfer rates for the same mixtures using micromodels, (4) to measure multiphase flow and interphase mass transfer in large flow cell experiments, all using the same mixtures, and (5) to modify the multiphase flow simulator STOMP in order to account for updated P-S and interphase mass transfer relationships, and to simulate the impact of CCl4 in the vadose zone on groundwater contamination. Results and findings from these tasks and summarized in the attached final report.

Charles J Werth; Albert J Valocchi, Hongkyu Yoon

2011-05-21T23:59:59.000Z

472

Exhaust-catalyst development for methanol-fueled vehicles. II. Synergism between palladium and silver in methanol and carbon monoxide oxidation over an alumina-supported palladium-silver catalyst  

SciTech Connect (OSTI)

Methanol and carbon monoxide oxidation were examined over 0.01 Pd, 5% Ag, and 0.01% Pd/5% Ag catalysts - all supported on ..gamma..-alumina. The bimetallic catalyst showed greater CO and CH/sub 3/OH oxidation activity than either of the single-component catalysts; moreover, the Pd and Ag interacted synergistically in the bimetallic catalyst to produce greater CO and CH/sub 3/OH oxidation rates and lower yields of methanol partial oxidation products than expected from a mixture of the single-component catalysts. Temperature-programmed oxidation experiments and reactivity experiments involving changes in O/sub 2/ partial pressure both provided evidence that the Pd-Ag synergism results from Pd promoting the rate of O/sub 2/ adsorption and reaction with CO and CH/sub 3/OH on Ag. The data also indicate that virtually all of the Pd in the bimetallic catalyst is present in Pd-Ag crystallites.

McCabe, R.W.; Mitchell, P.J.

1987-02-01T23:59:59.000Z

473

Plan of organization  

E-Print Network [OSTI]

~!lr fund available. By recent enactment the appropriation ib placed at the disposal of tEe screral States, and the station1 are being organized. OBJECT OF THE STATIONS. The purpose for which the Agricultural Experiment 11 mas passed is clearly... in the mails free. THE EXPERIMENT STATIONS were placed under the supervision of the Boards of Directors of the Agricultural and Mechanical Colleges, not for the pur- pose of assisting the colleges, but because it was thought the fund would be most...

McInnis, Louis L. (Louis Lowry); Scott, T. M.; Gulley, F. A. (Frank Arthur)

1888-01-01T23:59:59.000Z

474

Bisfuel links - Professional organizations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6 M. Babzien,BiologicalPresentationsProfessional organizations

475

Organizations | Argonne National Laboratory  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recoveryLaboratorySpeedingOptimizing I/O performance onAbout MissionOrganizations

476

Neighborhood Progress Through Organized Action.  

E-Print Network [OSTI]

[Blank Page in Original Bulletin] ~ei~ h borhood Progress Through Organized Action E. C. MARTIN, Administrative Assistant BONNIE COX, Organization Specialist MRS. EULA NEWMAN, Specialist in Home Management TEXAS A. & M. COLLEGE SYSTEM "The... coord: lent r peo plt 1. mmunity organization is successful when all families erested groups participate. Such an organization may inate interest in the community and provide an excel- neans for channeling most programs. The interest...

Newman, Eula; Cox, Bonnie; Martin, E. C.

1955-01-01T23:59:59.000Z

477

Nuclear Organization and Genome Function  

E-Print Network [OSTI]

Nuclear Organization and Genome Function Kevin Van Bortle and Victor G. Corces Department-range interactions and have proposed roles in nuclear organization. In this review, we explore recent findings for the roles of insulators in nuclear organization. 163 Annu.Rev.CellDev.Biol.2012.28:163-187.Downloadedfromwww

Corces, Victor G.

478

Chemical and Nutritional Ecology of Lucilia sericata (Meigen) (Diptera: Calliphoridae) as Related to Volatile Organic Compounds and Associated Essential Amino Acids  

E-Print Network [OSTI]

nutritional resources on blow fly larval performance. One GFP producing Providencia was successfully constructed to be used to visualize bacteria along the alimentary canal of L. sericata larvae to implement investigation of its impact on the physiology...

Liu, Wenqi

2014-08-07T23:59:59.000Z

479

Influence of Atmospheric Pressure and Water Table Fluctuations on Gas Phase Flow and Transport of Volatile Organic Compounds (VOCs) in Unsaturated Zones  

E-Print Network [OSTI]

in previous studies. This dissertation systematically investigates their influence on the gas phase flow and transport of VOCs in soil and ground water remediation processes using analytically and numerically mathematical modeling. New semi...

You, Kehua

2013-04-19T23:59:59.000Z

480

Gas phase photocatalytic degradation on TiO{sub 2} pellets of volatile chlorinated organic compounds from a soil vapor extraction well  

SciTech Connect (OSTI)

The mineralization of trichloroethylene (TCE) and tetrachloroethylene (PCE) in gas stream from a soil vapor extraction (SVE) well was demonstrated with an annular photocatalytic reactor packed with porous TiO{sub 2} pellets in field trials at the Savannah River Site in Aiken, SC. The TiO{sub 2} pellets were prepared using a sol-gel method. The experiments were performed at 55 to 60{degree}C using space times of 10{sup 8} to 10{sup 10} g s/mol for TCE and PCE. Chloroform (CHCl{sub 3}) and carbon tetrachloride (CCl{sub 4}) were detected as minor products from side reactions. On a molar basis, CCl{sub 4} and CHCl{sub 3} produced were about 2% and 0.2 % of the reactants.

Yamazaki-Nishida, S.; Read, H.W.; Nagano, J.K.; Anderson, M.A. [Wisconsin Univ., Madison, WI (United States). Water Chemistry Program; Cervera-March, S. [Barcelona Univ., (Spain). Department of Chemical Engineering; Jarosch, T.R.; Eddy-Dilek, C.A. [Westinghouse Savannah River Co., Aiken, SC (United States)

1993-05-20T23:59:59.000Z

Note: This page contains sample records for the topic "monoxide volatile organic" 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.


481

Measurements of volatile organic compounds at a suburban ground site (T1) in Mexico City during the MILAGRO 2006 campaign: measurement comparison, emission ratios, and source attribution  

E-Print Network [OSTI]

methyl tert-butyl ether (MTBE) at 57 amu has been previouslyby a fragment of MTBE (62%) with minor contributions fromFortner and Knighton, 2008). MTBE also in- terfered (16%)

2011-01-01T23:59:59.000Z

482

Impact of the revised OSHA exposure standard on evaluation and control of benzene and other volatile organic chemicals in the liquid petroleum pipeline industry  

SciTech Connect (OSTI)

The primary purpose of this study was to determine the benzene exposure potential of workers in the liquid petroleum pipeline industry and to assess the impact of compliance with the revised standard on this industry. In addition, exposure to ethylene dibromide (EDB), and ethylene dichloride (EDC), which have toxicological profiles similar to that of benzene and are routinely found in this industry, were evaluated and appropriate control protocols were recommended. Exposure potential to benzene in excess of the 0.5 ppm (8-hour TWA) OSHA action level was shown to be limited to three free product handling operations, and that this increased exposure potential was dependent on the length of time necessary to perform the operations. The incidence and magnitude of benzene overexposure was not severe and control could be accomplished with engineering methods, along with work practice controls and personal protective equipment. Through application of a risk assessment model it was shown that 14 excess leukemia deaths per one thousand workers could be expected in the employee population that routinely performs those operation having maximum benzene exposure potential. This compares to less than on excess leukemia death per one thousand workers in the total work population. The evaluation of EDB and EDC indicated that exposure potential to EDB was of greatest concern. Even though exposure could be limited through application of standard industrial hygiene methods, any control protocol short of total elimination of EDB from the product stream may be not sufficient to reduce exposure to accepted levels.

Mercer, D.O.

1989-01-01T23:59:59.000Z

483

Measurements of volatile organic compounds at a suburban ground site (T1) in Mexico City during the MILAGRO 2006 campaign: measurement comparison, emission ratios, and source attribution  

E-Print Network [OSTI]

versus CO for OVOCs and acetonitrile calculated by linearThis analy- OVOCs and acetonitrile. Because OVOCs have knownwas used to measure acetonitrile, aromatics and oxy- genated

2011-01-01T23:59:59.000Z

484

Real refractive indices and volatility of secondary organic aerosol generated from photooxidation and ozonolysis of limonene, -pinene and toluene upon heating  

E-Print Network [OSTI]

C to approximately 20% at 95 şC due to additional thermophoretic forces [Burtscher et al., 2001]. Above 50 nm

Meskhidze, Nicholas

485

Quantifying the ecosystem-scale emission and deposition fluxes of biogenic volatile organic compounds (BVOC) and their oxidation products above plant canopies  

E-Print Network [OSTI]

covariance plots of vertical wind speed and m/z 127.073 (C 7correlation of vertical wind speed (w) and volume mixingcorrections between vertical wind speed and volume mixing

Park, Jeong-Hoo

2012-01-01T23:59:59.000Z

486

Installation and Operation of Sorbathene Solvent Vapor Recovery Units to Recover and Recycle Volatile Organic Compounds at Operating Sites within the Dow Chemical Company  

E-Print Network [OSTI]

because of the history of fires caused by exothermic heat of adsorption and high flammability when adsorption occurs during a long cycle time'. Three SORBATHENE units utilizing activated carbon with a short cycle time to limit temperature rise have... to the potential presence of oxygen in the vapor phase and the increased reactivity of the chemicals on the catalytic surface of the adsorbent. The extent of temperature rises and pressure swings are critical parameters. The adsorption phenomena is exothermic...

Hall, T. L.; Larrinaga, L.

487

Microorganisms for producing organic acids  

DOE Patents [OSTI]

Organic acid-producing microorganisms and methods of using same. The organic acid-producing microorganisms comprise modifications that reduce or ablate AcsA activity or AcsA homolog activity. The modifications increase tolerance of the microorganisms to such organic acids as 3-hydroxypropionic acid, acrylic acid, propionic acid, lactic acid, and others. Further modifications to the microorganisms increase production of such organic acids as 3-hydroxypropionic acid, lactate, and others. Methods of producing such organic acids as 3-hydroxypropionic acid, lactate, and others with the modified microorganisms are provided. Methods of using acsA or homologs thereof as counter-selectable markers are also provided.

Pfleger, Brian Frederick; Begemann, Matthew Brett

2014-09-30T23:59:59.000Z

488

Organic Molecule Functionalized Zn3P2 Nanowire Inorganic-Organic...  

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

Organic Molecule Functionalized Zn3P2 Nanowire Inorganic-Organic Hybrid Thermoelectrics Organic Molecule Functionalized Zn3P2 Nanowire Inorganic-Organic Hybrid Thermoelectrics...

489

Enhancement of CO2/N2 selectivity in a metal-organic framework by cavity modification  

E-Print Network [OSTI]

electricity is a major source of CO2 in the atmosphere, but the capture and sequestration of CO2 from flue gas two-thirds), CO2, water vapor, oxygen, and minor components such as carbon monoxide, nitrogen oxides

490

Comparison of Agricultural Runoff between Organic  

E-Print Network [OSTI]

Comparison of Agricultural Runoff between Organic Farming and Conventional Chemical Farming Nicole release #12;Organic Walnuts Filter strips Compost Organic pesticides Cover crops Monitoring of insects

491

Chemistry of Organic Electronic Materials 6483-Fall  

E-Print Network [OSTI]

Chemistry of Organic Electronic Materials 6483- Fall Tuesdays organic materials. The discussion will include aspects of synthesis General introduction to the electronic structure of organic materials with connection

Sherrill, David

492

Method of doping organic semiconductors  

DOE Patents [OSTI]

An apparatus has a crystalline organic semiconducting region that includes polyaromatic molecules. A source electrode and a drain electrode of a field-effect transistor are both in contact with the crystalline organic semiconducting region. A gate electrode of the field-effect transistor is located to affect the conductivity of the crystalline organic semiconducting region between the source and drain electrodes. A dielectric layer of a first dielectric that is substantially impermeable to oxygen is in contact with the crystalline organic semiconducting region. The crystalline organic semiconducting region is located between the dielectric layer and a substrate. The gate electrode is located on the dielectric layer. A portion of the crystalline organic semiconducting region is in contact with a second dielectric via an opening in the dielectric layer. A physical interface is located between the second dielectric and the first dielectric.

Kloc,; Christian Leo (Constance, DE); Ramirez; Arthur Penn (Summit, NJ); So, Woo-Young (New Providence, NJ)

2010-10-26T23:59:59.000Z

493

Mobilization and Transport of Organic Compounds from Reservoir Rock and Caprock in Geological Carbon Sequestration Sites  

SciTech Connect (OSTI)

Supercritical CO2 (scCO2) is an excellent solvent for organic compounds, including benzene, toluene, ethyl-benzene, and xylene (BTEX), phenols, and polycyclic aromatic hydrocarbons (PAHs). Monitoring results from geological carbon sequestration (GCS) field tests has shown that organic compounds are mobilized following CO2 injection. Such results have raised concerns regarding the potential for groundwater contamination by toxic organic compounds mobilized during GCS. Knowledge of the mobilization mechanism of organic compounds and their transport and fate in the subsurface is essential for assessing risks associated with GCS. Extraction tests using scCO2 and methylene chloride (CH2Cl2) were conducted to study the mobilization of volatile organic compounds (VOCs, including BTEX), the PAH naphthalene, and n-alkanes (n-C20 – n-C30) by scCO2 from representative reservoir rock and caprock obtained from depleted oil reservoirs and coal from an enhanced coal-bed methane recovery site. More VOCs and naphthalene were extractable by scCO2 compared to the CH2Cl2 extractions, while scCO2 extractable alkane concentrations were much lower than concentrations extractable by CH2Cl2. In addition, dry scCO2 was found to extract more VOCs than water saturated scCO2, but water saturated scCO2 mobilized more naphthalene than dry scCO2. In sand column experiments, moisture content was found to have an important influence on the transport of the organic compounds. In dry sand columns the majority of the compounds were retained in the column except benzene and toluene. In wet sand columns the mobility of the BTEX was much higher than that of naphthalene. Based upon results determined for the reservoir rock, caprock, and coal samples studied here, the risk to aquifers from contamination by organic compounds appears to be relatively low; however, further work is necessary to fully evaluate risks from depleted oil reservoirs.

Zhong, Lirong; Cantrell, Kirk J.; Mitroshkov, Alexandre V.; Shewell, Jesse L.

2014-05-06T23:59:59.000Z

494

Digestive System general organization throughout  

E-Print Network [OSTI]

Digestive System general organization throughout: mucosa, submucosa, muscularis externa, serosa digestive glands salivary pancreas liver (lobes: right, left, caudate, quadrate, diaphragmatic surface, bare

Houde, Peter

495

IX. Standards for Student Organizations Standards of all Student Organizations  

E-Print Network [OSTI]

1 of 8 IX. Standards for Student Organizations Standards of all Student Organizations As stated to the same standards of conduct to which students are held on an individual basis. Standards for Fraternities on February 25, 1976 - the University has developed the following standards for fraternity/sorority life

Marsh, David

496

Primary lead smelter, Doe Run, Herculaneum, Missouri: Volume 3 -- Appendix B.2 through Appendix F. Final report  

SciTech Connect (OSTI)

The United States Environmental Protection Agency`s (EPA) Emission Standards Division (ESD) is investigating the primary lead smelting source category to identify and quantify organic hazardous air pollutants (HAPs) emitted from blast furnaces. The primary objective was to obtain data on the emissions of volatile and semi-volatile organic HAPs, aldehydes, and ketones from primary lead smelter blast furnaces. A secondary objective was to obtain data on the emission of carbon monoxide. The data will be used by ESD to determine whether organic HAPs are emitted at levels that would justify regulation under the Maximum Achievable Control Technology (MACT) program. The Doe Run Company, which operates a primary lead smelter in Herculaneum, Missouri was selected by the ESD as the host facility for this project. This volume consists of Appendices B.2 through F.

NONE

1999-08-01T23:59:59.000Z

497

Primary lead smelter, Doe Run, Herculaneum, Missouri: Volume 2 -- Appendix B.1. Final report  

SciTech Connect (OSTI)

The United States Environmental Protection Agency`s (EPA) Emission Standards Division (ESD) is investigating the primary lead smelting source category to identify and quantify organic hazardous air pollutants (HAPs) emitted from blast furnaces. The primary objective was to obtain data on the emissions of volatile and semi-volatile organic HAPs, aldehydes, and ketones from primary lead smelter blast furnaces. A secondary objective was to obtain data on the emissions of carbon monoxide. The data will be used by ESD to determine whether organic HAPs are emitted at levels that would justify regulation under the Maximum Achievable Control Technology (MACT) program. The Doe Run Company, which operates a primary lead smelter in Herculaneum, Missouri was selected by the ESD as the host facility for this project. This volume consists of Appendix B.1.

Phoenix, F.J.

1999-08-01T23:59:59.000Z

498

Primary lead smelter, Doe Run, Herculaneum, Missouri: Volume 1 -- Text and Appendix A. Final report  

SciTech Connect (OSTI)

The United States Environmental Protection Agency`s (EPA) Emission Standards Division (ESD) is investigating the primary lead smelting source category to identify and quantify organic hazardous air pollutants (HAPs) emitted from blast furnaces. The primary objective was to obtain data on the emissions of volatile and semi-volatile organic HAPs, aldehydes, and ketones from primary lead smelter blast furnaces. A secondary objective was to obtain data on the emissions of carbon monoxide. The data will be used by ESD to determine whether organic HAPs are emitted at levels that would justify regulation under the Maximum Achievable Control Technology (MACT) program. The Doe Run Company, which operates a primary lead smelter in Herculaneum, Missouri was selected by the ESD as the host facility for this project. This volume consists of the report text and Appendix A.

Phoenix, F.J.

1999-08-01T23:59:59.000Z

499

Primary lead smelter, Doe Run, Herculaneum, Missouri (kit)  

SciTech Connect (OSTI)

The United States Environmental Protection Agency`s (EPA) Emission Standards Division (ESD) is investigating the primary lead smelting source category to identify and quantify organic hazardous air pollutants (HAPs) emitted from blast furnaces. The primary objective was to obtain data on the emissions of volatile and semi-volatile organic HAPs, aldehydes, and ketones from primary lead smelter blast furnaces. A secondary objective was to obtain data on the emissions of carbon monoxide. The data will be used by ESD to determine whether organic HAPs are emitted at levels that would justify regulation under the Maximum Achievable Control Technology (MACT) program. The Doe Run Company, which operates a primary lead smelter in Herculaneum, Missouri was selected by the ESD as the host facility for this project.

NONE

1999-08-01T23:59:59.000Z

500

The use of auxiliary ignition devices to improve combustion of low centane-high volatility fuels in a diesel engine  

SciTech Connect (OSTI)

The use of auxiliary ignition devices to improve the combustion of low cetane-high volatility fuels in a Diesel engine is described. Previous combustion with a low cetane-high volatility fuel (with a spark plug located at the periphery of the cylinder) resulted in engine knock at heavy loads and poor engine operation at light loads. In the present investigation, several new ignition devices were used to ignite the fuel in the center of the cylinder, to allow combustion to be controlled by rate of injection. The devices used were an extended spark electrode, a fuel spray deflector, a nozzle glow ring, and a nozzle fuel cage. High speed photography and heat release were used to characterize the ignition and combustion process of the low cetane fuel in conjunction with the ignition devices. Combustion with all of the ignition devices was initiated in the center of the cylinder, significantly reducing engine knock. The use of the auxiliary ignition devices to ignite the fuel in the center of the chamber demonstrated extended operation of the Diesel engine for all of the devices tested.

Stroia, B.L.; Abata. D.L.

1988-01-01T23:59:59.000Z