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Note: This page contains sample records for the topic "vocs volatile organic" from the National Library of EnergyBeta (NLEBeta).
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1

A Critical Review on Studies of Volatile Organic Compound (VOC) Sorption by  

E-Print Network (OSTI)

A Critical Review on Studies of Volatile Organic Compound (VOC) Sorption by Building Materials (RP the pros and cons of existing sorption models, as well as experimental methods. In addition, it summarizes existing sorption data in order to understand the phenomenon of VOC sorption on building materials better

Chen, Qingyan "Yan"

2

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

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

3 3 NMED COMMENTS ITEM 3 REVISE VOLATILE ORGANIC COMPOUND (VOC) TARGET ANALYTE LIST OTHER CHANGES TO VOC MONITORING PROGRAM Page 1 of 21 VOC 3·1: PMR Section 3, Topic 1, Table 1 Recalculated Waste Matrix Code Group Weighting Factors based on the 2004 Compliance Recertification Contact Handled (CH) Transuranic (TRU) Waste Inventory (m 3 ) The new weighting factors appear to be based on CH TRU waste only and do not include remote handled (RH) TRU waste. There was no discussion in the PMR addressing possible differences in Waste Matrix Code Group (WMCG) for RH TRU that could potentially impact the weighting factors. Please provide data characterizing the differences in emissions between the two types of waste, in support of the assertion that modeling data from CH TRU waste adequately

3

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

4

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

5

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

6

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

E-Print Network (OSTI)

. Applied Utility Systems Rosemead, California Tarrytown, New York Santa Ana, California ABSTRACT SCE has developed and implemented a research program for customer retention through VOC emission control. Following characterization of problematic..., California RON CASCONE Senior Consultant Chem Systems, Inc. Tarrytown, New York JIM REESE Applied Utility Santa Ana, California ABSTRACT SCE has developed and implemented a research program for customer retention through VOC emission control. Following...

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

7

Air filters from HVAC systems as possible source of volatile organic compounds (VOC) – laboratory and field assays  

Science Journals Connector (OSTI)

The emission of volatile organic compounds (VOC) from air filters of HVAC systems was to be evaluated. In a first study carbonyl compounds (14 aldehydes and two ketones) were measured by reacting them with 2,4-dinitrophenylhydrazine (DNPH). Analysis was done by HPLC and UV detection. In laboratory experiments pieces of used and unused HVAC filters were incubated in test chambers. Filters to be investigated were taken from a filter bank of a large HVAC system in the centre of Berlin. First results show that – among those compounds – formaldehyde and acetone were found in higher concentrations in the test chambers filled with used filters in comparison to those with unused filters. Parallel field measurements were carried out at the prefilter and main filter banks of the two HVAC systems. Here measurements were carried out simultaneously before and after the filters to investigate whether those aldehydes or ketones arise from the filter material on site. Formaldehyde and acetone significantly increased in concentration after the filters of one HVAC system. In parallel experiments microorganisms were proved to be able to survive on air filters. Therefore, a possible source of formaldehyde and acetone might be microbes.

Hans Schleibinger; Henning Rüden

1999-01-01T23:59:59.000Z

8

Volatile Organic Compounds — Emissions from Biomass Combustion  

Science Journals Connector (OSTI)

The emissions of Volatile Organic Compounds (VOC) from biomass combustion have been investigated. VOC contribute both to ... 0.5–10 MW. A variety of biomass fuel types and combustion equipment was covered. The su...

Lennart Gustavsson; Mats-Lennart Karlsson

1993-01-01T23:59:59.000Z

9

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

10

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

11

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

12

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

13

FIELD SCREENING FOR HALOGENATED VOLATILE ORGANIC COMPOUNDS  

SciTech Connect

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

14

Mechanisms for formation of organic and inorganic by-products and their control in nonthermal plasma chemical processing of VOCs  

Science Journals Connector (OSTI)

This paper presents the major by-products derived from Nonthermal Plasma (NTP) chemical processing of different types of Volatile Organic Compounds (VOCs), mechanisms for their formation, effects of reactor types and additives such as water and gaseous oxygen on by-product distribution, and safe operations of NTP reactors for the removal of VOCs.

Shigeru Futamura; Masami Sugasawa

2008-01-01T23:59:59.000Z

15

Volatile organic compound losses from sewage sludge-amended soils  

SciTech Connect

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

16

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.

17

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

SciTech Connect

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

18

Opportunities for reducing volatile organic compound emissions in manufacturing office furniture partitions: a feasibility analysis  

Science Journals Connector (OSTI)

A feasibility analysis is reported of reduction opportunities for volatile organic compound (VOC) emissions in manufacturing office furniture partitions. The pollution prevention (P2) methodology as defined by the Ontario Ministry of the Environment ... Keywords: emissions, manufacturing, office furniture, pollution prevention, volatile organic compound

Frank S. Luisser; Marc A. Rosen

2009-02-01T23:59:59.000Z

19

Field Derived Emission Factors For Formaldehyde and other Volatile Organic  

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

Field Derived Emission Factors For Formaldehyde and other Volatile Organic Field Derived Emission Factors For Formaldehyde and other Volatile Organic Compounds in FEMA Temporary Housing Units Title Field Derived Emission Factors For Formaldehyde and other Volatile Organic Compounds in FEMA Temporary Housing Units Publication Type Report LBNL Report Number LBNL-4083E Year of Publication 2010 Authors Parthasarathy, Srinandini, Randy L. Maddalena, Marion L. Russell, and Michael G. Apte Publisher Lawrence Berkeley National Laboratory City Berkeley Abstract Sixteen previously occupied temporary housing units (THUs) were studied to assess emissions of volatile organic compounds. The whole trailer emission factors were evaluated for 36 VOCs including formaldehyde. Indoor sampling was carried out in the THUs located in Purvis staging yard in Mississippi, USA. Indoor temperature and relative humidity (RH) were also measured in all the trailers during sampling. Indoor temperatures were varied (increased or decreased) in a selection of THUs using the

20

Effect of Outside Air Ventilation Rate on Volatile Organic Compound  

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

Outside Air Ventilation Rate on Volatile Organic Compound Outside Air Ventilation Rate on Volatile Organic Compound Concentrations in a Call Center Title Effect of Outside Air Ventilation Rate on Volatile Organic Compound Concentrations in a Call Center Publication Type Journal Article Year of Publication 2003 Authors Hodgson, Alfred T., David Faulkner, Douglas P. Sullivan, Dennis L. DiBartolomeo, Marion L. Russell, and William J. Fisk Journal Atmospheric Environment Volume 37 Start Page Chapter Pagination 5517-5528 Abstract A study of the relationship between outside air ventilation rate and concentrations of volatile organic compounds (VOCs) generated indoors was conducted in a call center office building. The building, with two floors and a floor area of 4,600 m2, was located in the San Francisco Bay Area, CA. Ventilation rates were manipulated with the building's four air handling units (AHUs). VOC concentrations in the AHU returns were measured on seven days during a 13-week period. VOC emission factors were determined for individual zones on days when they were operating at near steady-state conditions. The emission factor data were subjected to principal component (PC) analysis to identify groups of co-varying compounds. Potential sources of the PC vectors were ascribed based on information from the literature supporting the associations. Two vectors with high loadings of compounds including formaldehyde, 2,2,4-trimethyl-1,3- pentanediol monoisobutyrate, decamethylcyclopentasiloxane (d5 siloxane), and isoprene likely identified occupant-related sources. One vector likely represented emissions from building materials. Another vector represented emissions of solvents from cleaning products. The relationships between indoor minus outdoor VOC concentrations and ventilation rate were qualitatively examined for eight VOCs. Of these, acetaldehyde and hexanal, which were likely associated with material sources, and d5 siloxane exhibited general trends of higher concentrations at lower ventilation rates. For other compounds, the operation of the building and variations in pollutant generation and removal rates apparently combined to obscure the inverse relationship between VOC concentrations and ventilation. This result emphasizes the importance of utilizing source control measures, in addition to adequate ventilation, to limit concentrations of VOCs of concern in office buildings

Note: This page contains sample records for the topic "vocs 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

FIELD SCREENING FOR HALOGENATED VOLATILE ORGANIC COMPOUNDS  

SciTech Connect

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

22

Measurement of Passive Uptake Rates for Volatile Organic Compounds on  

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

Measurement of Passive Uptake Rates for Volatile Organic Compounds on Measurement of Passive Uptake Rates for Volatile Organic Compounds on Commercial Thermal Desorption Tubes and the Effect of Ozone on Sampling Title Measurement of Passive Uptake Rates for Volatile Organic Compounds on Commercial Thermal Desorption Tubes and the Effect of Ozone on Sampling Publication Type Report LBNL Report Number LBNL-6257E Year of Publication 2013 Authors Maddalena, Randy L., Amanda Parra, Marion L. Russell, and Wen-Yee Lee Publisher Lawrence Berkeley National Laboratory City Berkeley Keywords indoor air quality, Passive Sampling, Uptake Rates, vocs Abstract Diffusive or passive sampling methods using commercially filled axial-sampling thermal desorption tubes are widely used for measuring volatile organic compounds (VOCs) in air. The passive sampling method provides a robust, cost effective way to measure air quality with time-averaged concentrations spanning up to a week or more. Sampling rates for VOCs can be calculated using tube geometry and Fick's Law for ideal diffusion behavior or measured experimentally. There is evidence that uptake rates deviate from ideal and may not be constant over time. Therefore, experimentally measured sampling rates are preferred. In this project, a calibration chamber with a continuous stirred tank reactor design and constant VOC source was combined with active sampling to generate a controlled dynamic calibration environment for passive samplers. The chamber air was augmented with a continuous source of 45 VOCs ranging from pentane to diethyl phthalate representing a variety of chemical classes and physiochemical properties. Both passive and active samples were collected on commercially filled Tenax TA thermal desorption tubes over an 11-day period and used to calculate passive sampling rates. A second experiment was designed to determine the impact of ozone on passive sampling by using the calibration chamber to passively load five terpenes on a set of Tenax tubes and then exposing the tubes to different ozone environments with and without ozone scrubbers attached to the tube inlet. During the sampling rate experiment, the measured diffusive uptake was constant for up to seven days for most of the VOCs tested but deviated from linearity for some of the more volatile compounds between seven and eleven days. In the ozone experiment, both exposed and unexposed tubes showed a similar decline in terpene mass over time indicating back diffusion when uncapped tubes were transferred to a clean environment but there was no indication of significant loss by ozone reaction.

23

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

SciTech Connect

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

24

Modeling VOC sorption of building materials and its impact on indoor air quality  

E-Print Network (OSTI)

Sorption of volatile organic compounds (VOCs) by building materials can have significant effect on the indoor VOC concentration levels and indoor air quality in buildings. The objective of this study was to investigate ...

Zhang, Jinsong, 1975-

2001-01-01T23:59:59.000Z

25

5, 90979126, 2005 VOC emissions from  

E-Print Network (OSTI)

ACPD 5, 9097­9126, 2005 VOC emissions from vegetation pyrolysis J. P. Greenberg et al. Title Page Discussions Volatile organic emissions from the distillation and pyrolysis of vegetation J. P. Greenberg, H is licensed under a Creative Commons License. 9097 #12;ACPD 5, 9097­9126, 2005 VOC emissions from vegetation

Paris-Sud XI, Université de

26

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

SciTech Connect

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

27

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...

28

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

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

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

29

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...

30

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

31

Formaldehyde and Other Volatile Organic Chemical Emissions in Four FEMA  

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

Formaldehyde and Other Volatile Organic Chemical Emissions in Four FEMA Formaldehyde and Other Volatile Organic Chemical Emissions in Four FEMA Temporary Housing Units Title Formaldehyde and Other Volatile Organic Chemical Emissions in Four FEMA Temporary Housing Units Publication Type Journal Article Year of Publication 2009 Authors Maddalena, Randy L., Marion L. Russell, Douglas P. Sullivan, and Michael G. Apte Journal Environmental Science and Technology Volume 43 Start Page Chapter Pagination 5626-5632 Publisher Lawrence Berkeley National Laboratory Abstract Four unoccupied FEMA temporary housing units (THUs) were studied to assess their indoor emissions of volatile organic compounds including formaldehyde. Measurement of whole-THUVOC and aldehyde emission factors (µg 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 formaldehydeconcentrations ranged from 378 µg m-3 (0.31ppm) to 632 µg m-3 (0.52 ppm) in the AM, and from 433 µg m-3 (0.35 ppm) to 926 µg 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 (µg 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 materialspecific 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 theonly one with toxicological significance at the observed concentrations. Whole THU formaldehyde emissions ranged from 173 to 266 µg m-2 h-1 in the morning and 257 to 347 µg m-2 h-1 in the afternoon. Median formaldehyde emissions in previously studied site-built and manufactured homes were 31 and 45 µg m-2 h-1, respectively. Only one of the composite wood materials that was tested appeared to exceed the HUD formaldehyde emission standard (430 µg/m2 h-1 for particleboard and 130 µg/m2 h-1 for plywood). The high loading factor (materialsurface 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

32

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

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

to the target list or not, according to proposed language in Permit Attachment N. If a TIC is determined to contribute more than one percent of the risk, then it will be added to...

33

Partitioning of Volatile Organics in Diesel Particulate and Exhaust  

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

Evaluation of how sampling details affect the measurement of volatile organic compounds in diesel exhaust

34

VOC transport in vented drums containing simulated waste sludge  

SciTech Connect

A model is developed to estimate the volatile organic compound (VOC) concentration in the headspace of the innermost layer of confinement in a lab-scale vented waste drum containing simulated waste sludge. The VOC transport model estimates the concentration using the measured VOC concentration beneath the drum lid and model parameters defined or estimated from process knowledge of drum contents and waste drum configuration. Model parameters include the VOC diffusion characteristic across the filter vent, VOC diffusivity in air, size of opening in the drum liner lid, the type and number of layers of polymer bags surrounding the waste, VOC permeability across the polymer, and the permeable surface area of the polymer bags. Comparison of model and experimental results indicates that the model can accurately estimate VOC concentration in the headspace of the innermost layer of confinement. The model may be useful in estimating the VOC concentration in actual waste drums.

Liekhus, K.J.; Gresham, G.L.; Rae, C.; Connolly, M.J.

1994-02-01T23:59:59.000Z

35

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

SciTech Connect

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

36

Thermal treatment for VOC control  

SciTech Connect

Catalytic and thermal oxidation are well-established technologies for controlling volatile organic compounds (VOCs). Oxidation destroys pollutants, rather than capturing them. Oxidation units can destroy nearly 100% of VOC and toxic emissions targeted by the Clean Air Act Amendments of 1990--some systems attain destruction efficiencies over 99.99%. To assist in the design of these systems, an engineer will often look a/t the heat of combustion of the gas stream, along with the type of pollutant, to best determine the correct type of oxidation device to use. The paper discusses catalytic and thermal oxidation, energy recovery, and equipment for these processes.

Cloud, R.A. [Huntington Environmental Systems, Schaumburg, IL (United States)

1998-07-01T23:59:59.000Z

37

T2VOC user`s guide  

SciTech Connect

T2VOC is a numerical simulator for three-phase, three-component, non-isothermal flow of water, air, and a volatile organic compound (VOC) in multidimensional heterogeneous porous media. Developed at the Lawrence Berkeley Laboratory, T2VOC is an extension of the TOUGH2 general-purpose simulation program. This report is a self-contained guide to application of T2VOC to subsurface contamination problems involving nonaqueous phase liquids (NAPLs). It gives a technical description of the T2VOC code, including a discussion of the physical processes modeled, and the mathematical and numerical methods used. Detailed instructions for preparing input data are presented along with several illustrative sample problems.

Falta, R.W. [Clemson Univ., Clemson, SC (United States). Dept. of Earth Sciences; Pruess, K.; Finsterle, S. [Lawrence Berkeley Lab., CA (United States); Battistelli, A. [AQUATER S.p.A., San Lorenzo in Campo, (Italy)

1995-03-01T23:59:59.000Z

38

Volatile Organic Compound Investigation Results, 300 Area, Hanford Site, Washington  

SciTech Connect

Unexpectedly high concentrations of volatile organic compounds (VOC) were discovered while drilling in the unconfined aquifer beneath the Hanford Site’s 300 Area during 2006. The discovery involved an interval of relatively finer-grained sediment within the unconfined aquifer, an interval that is not sampled by routine groundwater monitoring. Although VOC contamination in the unconfined aquifer has been identified and monitored, the concentrations of newly discovered contamination are much higher than encountered previously, with some new results significantly higher than the drinking water standards. The primary contaminant is trichloroethene, with lesser amounts of tetrachloroethene. Both chemicals were used extensively as degreasing agents during the fuels fabrication process. A biological degradation product of these chemicals, 1,2-dichloroethene, was also detected. To further define the nature and extent of this contamination, additional characterization drilling was undertaken during 2007. Four locations were drilled to supplement the information obtained at four locations drilled during the earlier investigation in 2006. The results of the combined drilling indicate that the newly discovered contamination is limited to a relatively finer-grained interval of Ringold Formation sediment within the unconfined aquifer. The extent of this contamination appears to be the area immediately east and south of the former South Process Pond. Samples collected from the finer-grained sediment at locations along the shoreline confirm the presence of the contamination near the groundwater/river interface. Contamination was not detected in river water that flows over the area where the river channel potentially incises the finer-grained interval of aquifer sediment. The source for this contamination is not readily apparent. A search of historical documents and the Hanford Waste Information Data System did not provide definitive clues as to waste disposal operations and/or spills that might have resulted in groundwater contamination in this sediment, although several relatively small accidental releases of VOCs have occurred in the past in the northern portion of the 300 Area. It is likely that large quantities of degreasing solutions were disposed to the North and South Process Ponds during the 1950s and 1960s, and that evidence for them in the upper portion of the unconfined aquifer has been removed because of groundwater movement through the much more transmissive sediment. Also, investigations to date have revealed no evidence to suggest that a dense, non-aqueous phase liquid remains undetected in the subsurface. Potential pathways for contamination to migrate from this finer-grained sediment include groundwater movement through the interval to offshore locations in the Columbia River channel, dispersion out of the finer-grained interval into the overlying transmissive sediment (again, with transport to the riverbed), and potential future withdrawal via water supply wells.

Peterson, Robert E.; Williams, Bruce A.; Smith, Ronald M.

2008-07-07T23:59:59.000Z

39

VOCs and formaldehyde emissions from cleaning products and air Ccilia Solal1,*  

E-Print Network (OSTI)

VOCs and formaldehyde emissions from cleaning products and air fresheners CĂ©cilia Solal1: air fresheners, glass cleaners, furniture polishes, toilet products, carpet and floor cleaning Formaldehyde, Volatile organic compounds, Household products, Exposure INTRODUCTION Most indoor air pollutants

Paris-Sud XI, Université de

40

NETL: Ambient Monitoring - Contribution of Semi-volatile Organic Material  

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

Semi-volatile Organics in PM Semi-volatile Organics in PM This project is a cooperative effort between Brigham Young University (BYU) and researchers from the DOE-NETL Office of Science and and Engineering Research to determine the contribution of semi-volatile particulate organic compounds (SVOC) to total ambient suspended fine particulate mass at the NETL-Pittsburgh air monitoring facility. Project funding comes from DOE‘s University Coal Research (UCR) program. The hypothesis of the project is that fine particulate mass will be significantly under-determined in urban environments using single filter samplers such as the PM2.5 Federal Reference Method (FRM) because of the loss of semi-volatile organic compounds (SVOC) from the particles during sampling and storage. It is postulated that fine particulate mass, including the semi-volatile fine particulate organic species, are an appropriate surrogate for the components of fine particles which are associated with observed mortality and morbidity effects in epidemiological studies. Further, it is postulated that the most important fraction of the semi-volatile organic material with respect to exacerbation of health problems will be semi-volatile secondary compounds formed from reactions of volatile organic material with ozone and nitrogen oxides. Under-determination of these semi-volatile species will tend to over emphasize the importance of non-volatile fine particulate components such as sulfate or may reduce the significance of correlations with measured health effects.

Note: This page contains sample records for the topic "vocs 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

Arid site characterization and technology assessment: Volatile Organic Compounds-Arid Integrated Demonstration  

SciTech Connect

The US Department of Energy`s (DOE`s) Volatile Organic Compounds-Arid Integrated Demonstration (VOC-Arid ID) program was initiated in March 1991 to evaluate technologies for all phases of remediation of VOCs in soils and groundwater at DOE arid/semiarid sites. The primary site for field demonstrations under the VOC-Arid ID program is the Hanford Site. The purpose of this report is to describe (1) the bases for technologies currently under evaluation in the VOC-Arid ID program; (2) the types of subsurface contamination at DOE arid/semiarid sites; and (3) the areas of potential common technology interests based on perceived technology needs at other DOE sites. This report was compiled by Pacific Northwest Laboratory in response to DOE`s Office of Technology Development`s mission to carry out an aggressive program to accelerate the development and implementation of new and existing technologies to meet a 30-year goal set by DOE in June 1989 to clean up all of its sites and to bring all sites into compliance with current and future environmental regulations. A key component of this program is the development of technologies that are better, faster, safer, and cheaper than those technologies currently available. Included in this report are an evaluation of technologies currently (fiscal year 1993) being pursued at the Hanford Site under the auspices of the VOC-Arid ID program, an assessment of subsurface contaminants at arid/semiarid sites, a summarization of technologies under consideration at other DOE sites, a discussion of areas of potential common technology interests, and the conclusions. Also included are a summary of the extent of contamination at the DOE arid/semiarid sites under consideration and a bibliography of source documents from which this report was prepared.

Riley, R.G.

1993-06-01T23:59:59.000Z

42

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

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

43

Identifying Sources of Volatile Organic Compounds and Aldehydes in a High  

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

Identifying Sources of Volatile Organic Compounds and Aldehydes in a High Identifying Sources of Volatile Organic Compounds and Aldehydes in a High Performance Building Title Identifying Sources of Volatile Organic Compounds and Aldehydes in a High Performance Building Publication Type Report LBNL Report Number LBNL-3979e Year of Publication 2010 Authors Ortiz, Anna C., Marion L. Russell, Wen-Yee Lee, Michael G. Apte, and Randy L. Maddalena Pagination 29 Date Published 09/2010 Publisher Lawrence Berkeley National Laboratory City Berkeley Abstract 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 ÎĽg/m2/h (old wood with old polish) to >500 ÎĽg/m2/h (painted drywall). The formaldehyde emissions from drywall and old wood with either new or old polish were ~ 15 ÎĽg/m2/h while the new wood material emitted > 100 ÎĽg/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

44

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...

45

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.

46

Scale-up analysis and development of gliding arc discharge facility for volatile organic compounds decomposition  

Science Journals Connector (OSTI)

The influences of inlet gas flow rate and reactor configuration on volatile organic compounds (VOCs) decomposition efficiency in a traditional gliding arc (T-GA) facility are studied based on laboratory experiments and numerical simulation. The ratio of the nozzle diameter and the shortest distance of two electrodes should be maintained in a suitable value range to guarantee the decomposition efficiency, which indicates simply enlarging the nozzle inner diameter is not a proper way to raise the T-GA treatment capacity in a fixed supply voltage condition. A developed gliding arc gas discharge (D-GA) reactor based on a modified gas feed system is proposed: small flow rate air goes through the bottom nozzle to process the GA evolution, and high flow rate contaminated gas goes frontal through the plasma region and decomposes. The performances of D-GA reactor in the decomposition of \\{VOCs\\} with relative high gas flow rate, including decomposition efficiency and specific energy consumption, are better than T-GA reactor. D-GA reactor also avoids the drawbacks of the increases of power system amount and electric power consumption in multi-electrode GA system.

Zheng Bo; Jianhua Yan; Xiaodong Li; Yong Chi; Kefa Cen

2008-01-01T23:59:59.000Z

47

Detection of Volatile Organics Using a Surface Acoustic Wave Array System  

SciTech Connect

A chemical sensing system based on arrays of surface acoustic wave (SAW) delay lines has been developed for identification and quantification of volatile organic compounds (VOCs). The individual SAW chemical sensors consist of interdigital transducers patterned on the surface of an ST-cut quartz substrate to launch and detect the acoustic waves and a thin film coating in the SAW propagation path to perturb the acoustic wave velocity and attenuation during analyte sorption. A diverse set of material coatings gives the sensor arrays a degree of chemical sensitivity and selectivity. Materials examined for sensor application include the alkanethiol-based self-assembled monolayer, plasma-processed films, custom-synthesized conventional polymers, dendrimeric polymers, molecular recognition materials, electroplated metal thin films, and porous metal oxides. All of these materials target a specific chemical fi.mctionality and the enhancement of accessible film surface area. Since no one coating provides absolute analyte specificity, the array responses are further analyzed using a visual-empirical region-of-influence (VERI) pattern recognition algorithm. The chemical sensing system consists of a seven-element SAW array with accompanying drive and control electronics, sensor signal acquisition electronics, environmental vapor sampling hardware, and a notebook computer. Based on data gathered for individual sensor responses, greater than 93%-accurate identification can be achieved for any single analyte from a group of 17 VOCs and water.

ANDERSON, LAWRENCE F.; BARTHOLOMEW, JOHN W.; CERNOSEK, RICHARD W.; COLBURN, CHRISTOPHER W.; CROOKS, R.M.; MARTINEZ, R.F.; OSBOURN, GORDON C.; RICCO, A.J.; STATON, ALAN W.; YELTON, WILLIAM G.

1999-10-14T23:59:59.000Z

48

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

SciTech Connect

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

49

VOC reduction strategies for the aerospace industry  

SciTech Connect

The aerospace NESHAP, which was issued on September 1, 1995, requires reductions in Volatile Organic Compounds (VOCs) and organic Hazardous Air Pollutant (HAP) emissions associated with the application of primer and topcoat. The regulation affects any facility that is a major source of HAPs and produces, reworks, or repairs, in any amount any commercial, civil, or military aerospace vehicle. Options for reducing VOC and organic HAP emissions include use of low VOC/organic HAP containing coatings or implementation of air pollution control systems. Use of primers and topcoats that meet the regulatory limits for VOC and organic HAP content is clearly the lowest cost option of meeting requirements of the aerospace NESHAP. However, some facilities have been unsuccessful in identifying aerospace paints and primers that meet requirements of the NESHAP and also have acceptable performance properties. For those aerospace companies considering implementation of air pollution control systems, several strategies can help to reduce the anticipated capital and operating costs. Such strategies include: segregation of specialty coatings, non-aerospace coatings, and low-use coatings not affected by the aerospace NESHAP from regulated paints and primers; reduction of airflows in affected booths; recirculation of air; and combination of exhausts from one or more booth. Estimated capital and operating costs are also provided for the air pollution control systems best suited for aircraft painting and priming operations. These systems include regenerative thermal oxidizers and fluidized bed/rotary concentrators in conjunction with thermal oxidizers. Even after implementing strategies to reduce VOC and organic HAP pollution control system costs, economics will dictate use of compliant primers and topcoats for many aerospace companies. 6 refs.

Bauer, J.P. [Burns & McDonnell, Kansas City, MO (United States)

1996-12-31T23:59:59.000Z

50

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

E-Print Network (OSTI)

Urea Formaldehyde Foam Insulation (UFFI), Consumer Productdiisobutyrate Urea Formaldehyde Foam Insulation orexpandable foam insulation Volatile Organic Chemical TMPD-

Maddalena, Randy L.

2008-01-01T23:59:59.000Z

51

Determination of Steam-Volatile Organic Acids in Fermentation Media by Gas-Liquid Chromatography  

Science Journals Connector (OSTI)

...research-article Articles Determination of Steam-Volatile Organic Acids in Fermentation...utility in the separation and quantitation of steam-volatile organic acids commonly produced...column of Carbowax 20 M + H3PO4 separated steam-volatile organic acids completely. The...

L. V. Packett; R. W. McCune

1965-01-01T23:59:59.000Z

52

VOC compliance on the ball: Aluminum can manufacturer rolls to California VOC compliance  

SciTech Connect

Since entering the North American beverage can market in 1969, Ball Corp., has increased its market share at a pace more than double the growth of the market itself. In addition to holding numerous patented advancements in can-making technology, Ball prides itself as an environmentally responsible company. When Ball decided to increase production capacity in its Fairfield, California, plant, the challenge was to produce more cans, while still complying with the state`s stringent air emissions regulations. As with other aluminum can manufacturing facilities, Ball`s coating and curing operations generate volatile organic compounds (VOCs). Ball`s permit from the state of California allows only limited amounts of VOC discharges into the atmosphere. With proposed increases in production capacities, however, the Bay Area`s Air Quality Management District--a local US EPA authority--required Ball to incinerate far more VOCs than the existing recuperative abatement system could handle. According to California regulations, facilities that wish to increase VOC emissions must install some type of VOC-control system or provide technological offsets. This regulatory pressure led Ball to seek a solution that would not only comply with emissions regulations, but would not compromise the company`s production process. Ball engineers selected a regenerative thermal oxidizer (RTO) for the Fairfield, Calif., plant. Considering the success Ball has encountered in previous experiences with this type of oxidation unit, the company immediately selected an RTO instead of catalytic oxidizers or other types of pollution control equipment.

Gay, R. [Engelhard Corp., Iselin, NJ (United States)

1997-07-01T23:59:59.000Z

53

Quantifying VOC emissions for the strategic petroleum reserve.  

SciTech Connect

A very important aspect of the Department of Energy's (DOE's) Strategic Petroleum Reserve (SPR) program is regulatory compliance. One of the regulatory compliance issues deals with limiting the amount of volatile organic compounds (VOCs) that are emitted into the atmosphere from brine wastes when they are discharged to brine holding ponds. The US Environmental Protection Agency (USEPA) has set limits on the amount of VOCs that can be discharged to the atmosphere. Several attempts have been made to quantify the VOC emissions associated with the brine ponds going back to the late 1970's. There are potential issues associated with each of these quantification efforts. Two efforts were made to quantify VOC emissions by analyzing VOC content of brine samples obtained from wells. Efforts to measure air concentrations were mentioned in historical reports but no data have been located to confirm these assertions. A modeling effort was also performed to quantify the VOC emissions. More recently in 2011- 2013, additional brine sampling has been performed to update the VOC emissions estimate. An analysis of the statistical confidence in these results is presented here. Arguably, there are uncertainties associated with each of these efforts. The analysis herein indicates that the upper confidence limit in VOC emissions based on recent brine sampling is very close to the 0.42 ton/MMB limit used historically on the project. Refining this estimate would require considerable investment in additional sampling, analysis, and monitoring. An analysis of the VOC emissions at each site suggests that additional discharges could be made and stay within current regulatory limits.

Knowlton, Robert G.; Lord, David L.

2013-06-01T23:59:59.000Z

54

Exhaust emissions of volatile organic compounds of powered two-wheelers: Effect of cold start and vehicle speed. Contribution to greenhouse effect and tropospheric ozone formation  

Science Journals Connector (OSTI)

Abstract Powered two-wheeler (PTW) vehicles complying with recent European type approval standards (stages Euro 2 and Euro 3) were tested on chassis dynamometer in order to measure exhaust emissions of about 25 volatile organic compounds (VOCs) in the range C1–C7, including carcinogenic compounds as benzene and 1,3-butadiene. The fleet consists of a moped (engine capacity ? 50 cm3) and three fuel injection motorcycles of different engine capacities (150, 300 and 400 cm3). Different driving conditions were tested (US FPT cycle, constant speed). Due to the poor control of the combustion and catalyst efficiency, moped is the highest pollutant emitter. In fact, fuel injection strategy and three way catalyst with lambda sensor are able to reduce VOC motorcycles' emission of about one order of magnitude with respect to moped. Cold start effect, that is crucial for the assessment of actual emission of \\{PTWs\\} in urban areas, was significant: 30–51% of extra emission for methane. In the investigated speed range, moped showed a significant maximum of VOC emission factor at minimum speed (10 km/h) and a slightly decreasing trend from 20 to 60 km/h; motorcycles showed on the average a less significant peak at 10 km/h, a minimum at 30–40 km/h and then an increasing trend with a maximum emission factor at 90 km/h. Carcinogenic \\{VOCs\\} show the same pattern of total VOCs. Ozone Formation Potential (OFP) was estimated by using Maximum Incremental Reactivity scale. The greatest contribution to tropospheric ozone formation comes from alkenes group which account for 50–80% to the total OFP. VOC contribution effect on greenhouse effect is negligible with respect to CO2 emitted.

M. Antonietta Costagliola; Fabio Murena; M. Vittoria Prati

2014-01-01T23:59:59.000Z

55

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.

56

MEASUREMENT OF VOC EMISSIONS FROM WOOD REMEDIAL TREATMENT: CHAMBER TESTS AND FIELD EXPERIMENTS  

E-Print Network (OSTI)

products on indoor air quality. The emissions of two wood remedial treatment products (water in real conditions during a roof renovation work in an old building. A petroleum-based solvent product of volatile organic compound (VOC) emissions from building products. Simple models can be applied to emission

Paris-Sud XI, Université de

57

New Soil Volatile Organic Compound Samplers U S  

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

Soil Volatile Organic Soil Volatile Organic Compound Samplers U . S . D e p a r t m e n t o f E n e r g y * O f f i c e o f F o s s i l E n e r g y N a t i o n a l E n e r g y T e c h n o l o g y L a b o r a t o r y Successes AdvAnced ReseARch To support coal and power systems development, NETL's Advanced Research Program conducts a range of pre-competitive research focused on breakthroughs in materials and processes, coal utilization science, sensors and controls, computational energy science, and bioprocessing-opening new avenues to gains in power plant efficiency, reliability, and environmental quality. NETL also sponsors cooperative educational initiatives in University Coal Research, Historically Black Colleges and Universities, and Other Minority Institutions. Accomplishments P Process improvement P Cost reduction P Greater efficiency

58

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

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

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

59

Field Derived Emission Factors For Formaldehyde and other Volatile Organic Compounds in FEMA Temporary Housing Units  

SciTech Connect

Sixteen previously occupied temporary housing units (THUs) were studied to assess emissions of volatile organic compounds. The whole trailer emission factors wereevaluated for 36 VOCs including formaldehyde. Indoor sampling was carried out in the THUs located in Purvis staging yard in Mississippi, USA. Indoor temperature andrelative humidity (RH) were also measured in all the trailers during sampling. Indoor temperatures were varied (increased or decreased) in a selection of THUs using theheating, ventilation and air conditioning (HVAC) systems. Indoor temperatures during sampling ranged from 14o C to 33o C, and relative humidity (RH) varied between 35percentand 74percent. Ventilation rates were increased in some trailers using bathroom fans and vents during some of the sampling events. Ventilation rates measured during some aselection of sampling events varied from 0.14 to 4.3 h-1. Steady state indoor formaldehyde concentrations ranged from 10 mu g-m-3 to 1000 mu g-m-3. The formaldehyde concentrations in the trailers were of toxicological significance. The effects of temperature, humidity and ventilation rates were also studied. A linearregression model was built using log of percentage relative humidity, inverse of temperature (in K-1), and inverse log ACH as continuous independent variables, trailermanufacturer as a categorical independent variable, and log of the chemical emission factors as the dependent variable. The coefficients of inverse temperature, log relativehumidity, log inverse ACH with log emission factor were found to be statistically significant for all the samples at the 95percent confidence level. The regression model wasfound to explain about 84percent of the variation in the dependent variable. Most VOC concentrations measured indoors in the Purvis THUs were mostly found to be belowvalues reported in earlier studies by Maddalena et al.,1,2 Hodgson et al.,3 and Hippelein4. Emissions of TMPB-DIB (a plasticizer found in vinyl products) were found to be higher than values reported in comparable housing by Hodgson et al.,3. Emissions of phenol were also found to be slightly higher than values reported in earlier studies1,2,3. This study can assist in retrospective formaldehyde exposure assessments of THUs where estimates of the occupants indoor formaldehyde exposures are needed.

Parthasarathy, Srinandini; Maddalena, Randy L.; Russell, Marion L.; Apte, Michael G.

2010-10-01T23:59:59.000Z

60

Detection of volatile organic compounds using surface enhanced Raman scattering  

SciTech Connect

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 "vocs 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

A numerical solution to three-dimensional multiphase transport of volatile organic compounds in unsaturated soils -- with an application to the remedial method of in-situ volatilization. Part I: Theoretical development  

SciTech Connect

Part I of this paper presents the development and application of a numerical model for determining the fate and transport of volatile organic compounds (VOCS) in the unsaturated zone resulting from forced volatilization and gaseous advection-dispersion of organic vapor in a multipartitioned three-dimensional environment. The model allows for single-component transport in the gas and water phases. The hydrocarbon is assumed to be in specific retention and, therefore, immobile. Partitioning of the hydrocarbon between the oil, water, gas, and soil is developed as rate-limited functions that are incorporated into sink/source terms in the transport equations. The code for the model was developed specifically to investigate in-situ volatilization (ISV) remedial strategies, predict the extent of cleanup from information obtained at a limited number of measurement locations, and to help design ISV remedial systems. Application of the model is demonstrated for a hypothetical one-dimensional ISV system. Part II of this paper will present the analysis of an existing ISV system using the full three-dimensional capability of the model.

Filley, T.; Tomasko, D.

1992-04-01T23:59:59.000Z

62

The mechanisms and relative importance of abiotic and biological processes for VOC loss from sludge amended soils  

SciTech Connect

The presence of volatile organic compounds (VOCs) in sewage sludge has been a cause of increasing concern due to the possible risk to human health and the environment when sludge is applied to agricultural soils. Sludge application to agricultural land in the UK is expected to increase as a result of restrictions on alternative disposal routes and also increasingly stringent wastewater treatment requirements. Few studies have examined the fate and behavior of VOCs in sewage sludge amended soils and those reported have used spiked sludge rather than investigating the behavior of VOCs resident in the sludge itself. This study was designed to evaluate the behavior of aromatic VOCs (namely toluene, xylene and ethyl benzene) in unspiked sewage sludge amended soils and assess the relative importance and mechanisms of abiotic and biological loss processes. This was undertaken by adding sewage sludge to sterilized and unsterilized soil in closed and open systems. Results indicated that abiotic loss processes, primarily volatilization, were most important for the removal of VOCs. Initial rate of VOC loss was similar in all systems. After 65 days a residual VOC soil concentration remained which was apparently dependent on the conditions within the system.

Wilson, S.C.; Jones, K.C. [Lancaster Univ. (United Kingdom). Inst. of Environmental and Biological Sciences

1994-12-31T23:59:59.000Z

63

Volatile organic compound monitoring by photo acoustic radiometry  

SciTech Connect

Two methods for sampling and analyzing volatile organics in subsurface pore gas were developed for use at the Hazardous Waste Disposal Site at Los Alamos National Laboratory. One is Thermal Desorption Gas Chromatography Mass Spectrometry (TDGCMS), the other is Photoacoustic Radiometry (PAR). Presented here are two years worth of experience and lessons learned as both techniques matured. The sampling technique is equally as important as the analysis method. PAR is a nondispersive infrared technique utilizing band pass filters in the region from 1 to 15 {mu}m. A commercial instrument, the Model 1302 Multigas Analyzer, made by Bruel and Kjaer, was adapted for field use. To use the PAR there must be some a priori knowledge of the constellation of analytes to be measured. The TDGCMS method is sensitive to 50 analytes. Hence TDGCMS is used in an initial survey of the site to determine what compounds are present and at what concentration. Once the major constituents of the soil-gas vapor plume are known the PAR can be configured to monitor for the five analytes of most interest. The PAR can analyse a sample in minutes, while in the field. The PAR is also quite precise in controlled situations.

Sollid, J.E.; Trujillo, V.L.; Limback, S.P.; Woloshun, K.A.

1995-12-01T23:59:59.000Z

64

ARTIFACT FORMATION IN HIGH VOLUME SAMPLING OF VOC's AND SOLID ORGANIC COMPOUNDS.  

E-Print Network (OSTI)

when sampling polluted air. Purified air containing 180 ppbv ozone seems to destroy PAH according Atmospheriques, Boite 7059, UNIVERSITE PARIS 7, 2, place Jussieu, 75251 PARIS Cedex 05 ABSTRACT Pollutants from well äs solid (SOC's) organic compounds. High volume samplers are commonly used m air quality

Boyer, Edmond

65

Volatile organic chemical emissions from carpets. Final report  

SciTech Connect

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

66

The use of radon (Rn-222) and volatile organic compounds in monitoring soil gas to localize NAPL contamination at a gas station in Rio Claro, Săo Paulo State, Brazil  

Science Journals Connector (OSTI)

Abstract This study focuses on the presence of radon (222Rn) and volatile organic compounds (VOCs) in soil gases at a gas station located in the city of Rio Claro, Săo Paulo, Brazil, where a fossil fuel leak occurred. The spatial distribution results show a correlation between 222Rn and VOCs, consistent with the fact that radon gas has a greater chemical affinity with organic phases than with water. This finding demonstrates that the presence of a residual hydrocarbon phase in an aquifer can retain radon, leading to a reduced radon content in the soil gas. The data in this study confirm the results of previous investigations, in which the method used in this study provided a preliminary fingerprint of a contaminated area. Furthermore, the data analysis time is brief, and only simple equipment is required.

E.Q. Barbosa; J.A. Galhardi; D.M. Bonotto

2014-01-01T23:59:59.000Z

67

Ambient air VOC concentrations at WIPP  

SciTech Connect

The Waste Isolation Pilot Plant (WIPP), located near Carlsbad, New Mexico, is an underground facility designated as a potential repository for transuranic wastes. Approximately 60% of the wastes proposed to be emplaced at the WIPP are considered mixed wastes, which contain both radioactive and Resource Conservation and Recovery Act-regulated hazardous chemical components. As part of the Addendum to the WIPP No-Migration Variance Petition', the US Department of Energy presented a plan to monitor the release of volatile organic compounds (VOCs) from the WIPP unit boundary. This program should fulfill the monitoring requirements of 40CFR268.6 allowing the disposal of wastes prohibited from land disposal only after demonstration that, to a reasonable degree of certainty, there will be no migration of constituents from the disposal unit for as long as the wastes remain hazardous.

Wu, C.F.; Frank-Supka, L. (Westinghouse Waste Isolation Division, Carlsbad, NM (United States)); Zimmer, R.A. (Harding Lawson Associates, Denver, CO (United States))

1993-01-01T23:59:59.000Z

68

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.

69

Development of efficiency-enhanced cogeneration system utilizing high-temperature exhaust-gas from a regenerative thermal oxidizer for waste volatile-organic-compound gases  

Science Journals Connector (OSTI)

We have developed a gas-turbine cogeneration system that makes effective use of the calorific value of the volatile organic compound (VOC) gases exhausted during production processes at a manufacturing plant. The system utilizes the high-temperature exhaust-gas from the regenerative thermal oxidizer (RTO) which is used for incinerating VOC gases. The high-temperature exhaust gas is employed to resuperheat the steam injected into the gasturbine. The steam-injection temperature raised in this way increases the heat input, resulting in the improved efficiency of the gas-turbine. Based on the actual operation of the system, we obtained the following results: • Operation with the steam-injection temperature at 300 °C (45 °C resuperheated from 255 °C) increased the efficiency of the gasturbine by 0.7%. • The system can enhance the efficiency by 1.3% when the steam-injection temperature is elevated to 340 °C (85 °C resuperheated). In this case, up to 6.6 million yen of the total energy cost and 400 tons of carbon dioxide (CO2) emissions can be reduced annually. • A gas-turbine cogeneration and RTO system can reduce energy consumption by 23% and CO2 emission by 30.1% at the plant.

Masaaki Bannai; Akira Houkabe; Masahiko Furukawa; Takao Kashiwagi; Atsushi Akisawa; Takuya Yoshida; Hiroyuki Yamada

2006-01-01T23:59:59.000Z

70

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

71

Secondary Organic Aerosol from Aqueous Reactions of Green Leaf Volatiles with Organic Triplet Excited States and Singlet Molecular Oxygen  

Science Journals Connector (OSTI)

Secondary Organic Aerosol from Aqueous Reactions of Green Leaf Volatiles with Organic Triplet Excited States and Singlet Molecular Oxygen ... To examine this, we calculated the bond dissociation energies (BDE) of different C–H bonds in the two molecules (Section S2 and Figure S3 in the SI). ... by the Arrhenius equation (Figure 3b)(6)where A is the pre-exponential factor, Ea is the activation energy, and R is the gas constant. ...

Nicole K. Richards-Henderson; Andrew T. Pham; Benjamin B. Kirk; Cort Anastasio

2014-11-26T23:59:59.000Z

72

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

73

Source Signature of Volatile Organic Compounds from Oil and Natural Gas Operations in Northeastern Colorado  

Science Journals Connector (OSTI)

Source Signature of Volatile Organic Compounds from Oil and Natural Gas Operations in Northeastern Colorado ... Only 4% of all samples at BAO had high ROH+VOCO&NG and were from the western sector where the nearest wells are located indicating that they were not the dominant O&NG source at BAO. ... parameters were measured concurrently at a site on the western perimeter of Boulder, Colorado, during Feb., 1991. ...

J. B. Gilman; B. M. Lerner; W. C. Kuster; J. A. de Gouw

2013-01-14T23:59:59.000Z

74

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

SciTech Connect

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

75

Photochemical Modeling of Emissions Trading of Highly Reactive Volatile Organic Compounds in Houston, Texas. 2. Incorporation of Chlorine Emissions  

Science Journals Connector (OSTI)

As part of the State Implementation Plan for attaining the National Ambient Air Quality Standard for ozone, the Texas Commission of Environmental Quality has created a Highly Reactive Volatile Organic Compounds (HRVOC) Emissions Cap and Trade Program for ...

Linlin Wang; Tammy Thompson; Elena C. McDonald-Buller; David T. Allen

2007-02-27T23:59:59.000Z

76

Arid sites stakeholder participation in evaluating innovative technologies: VOC-Arid Site Integrated Demonstration  

SciTech Connect

Developing and deploying innovative environmental cleanup technologies is an important goal for the U.S. Department of Energy (DOE), which faces challenging remediation problems at contaminated sites throughout the United States. Achieving meaningful, constructive stakeholder involvement in cleanup programs, with the aim of ultimate acceptance of remediation decisions, is critical to meeting those challenges. DOE`s Office of Technology Development sponsors research and demonstration of new technologies, including, in the past, the Volatile Organic Compounds Arid Site Integrated Demonstration (VOC-Arid ID), hosted at the Hanford Site in Washington State. The purpose of the VOC-Arid ID has been to develop and demonstrate new technologies for remediating carbon tetrachloride and other VOC contamination in soils and ground water. In October 1994 the VOC-Arid ID became a part of the Contaminant Plume Containment and Remediation Focus Area (Plume Focus Area). The VOC Arid ID`s purpose of involving stakeholders in evaluating innovative technologies will now be carried on in the Plume Focus Area in cooperation with Site Technology Coordination Groups and Site Specific Advisory Boards. DOE`s goal is to demonstrate promising technologies once and deploy those that are successful across the DOE complex. Achieving that goal requires that the technologies be acceptable to the groups and individuals with a stake in DOE facility cleanup. Such stakeholders include groups and individuals with an interest in cleanup, including regulatory agencies, Native American tribes, environmental and civic interest groups, public officials, environmental technology users, and private citizens. This report documents the results of the stakeholder involvement program, which is an integral part of the VOC-Arid ID.

Peterson, T.S.; McCabe, G.H.; Brockbank, B.R. [and others

1995-05-01T23:59:59.000Z

77

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

78

Radiocarbon Measurements of Atmospheric Volatile Organic Compounds:? Quantifying the Biogenic Contribution  

Science Journals Connector (OSTI)

The ability to obtain quality (interpretable) [14C]VOC measurements however relies on additional factors:? (1) transferring individual VOCs to the measurement system in a manner that preserves their original relative concentrations in the atmosphere (recovery), (2) quantifying limitations in the VOC isolation process (bias), and 3) quantifying chemical and isotopic contamination (blanks). ... The fM results for the VOC fractions from calibration mixtures and ambient samples are corrected for CO2 contamination using eq 2, where ?BLK in this case is defined as in which mCO2 is the carbon mass of residual atmospheric CO2 following LiOH treatment plus the carbon mass of CO2 contamination from the O2 used for VOC oxidation, and mREC is the total recovered carbon (Table 3). ... During pressurized sampling of humid air, water will be condensed in the canisters. ...

George A. Klouda; Charles W. Lewis; Reinhold A. Rasmussen; George C. Rhoderick; Robert L. Sams; Robert K. Stevens; Lloyd A. Currie; Douglas J. Donahue; A. J. Timothy Jull; Robert L. Seila

1996-03-26T23:59:59.000Z

79

Dual cure low-VOC coating process. Final technical report, Phase 3  

SciTech Connect

US EPA is implementing increasingly stringent environmental regulations on the emissions of volatile organic compounds (VOCs), which amount to about 7 {times} 10{sup 9} lb/year, largely from paints and other coating systems in industry. Objective of this project is to develop Dual Cure Photocatalyst coating technology for aerospace topcoats (urethane/acrylate), aerospace primers (epoxy/acrylate), and solventless tape backings. Some problems (moisture etc.) were encountered in the primer area. Cost, economic, and energy analyses were conducted. The dual cure technology has already been commercialized in 3M`s flexible diamond resin products. Tabs.

Kinzer, K.E.

1993-12-01T23:59:59.000Z

80

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

SciTech Connect

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

Note: This page contains sample records for the topic "vocs 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

Microenvironmental Exposures to VOCs  

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

Microenvironmental Exposures to VOCs Microenvironmental Exposures to VOCs Speaker(s): Miranda Loh Date: February 1, 2006 - 12:00pm Location: 90-3122 The Boston Exposure Assessment in Microenvironments (BEAM) study was designed to examine the concentration distributions of VOCs in various microenvironments in and around Boston with the main objective of reducing the uncertainties in predicting exposure levels. A suite of VOC's with potential health effects including benzene, toluene, ethylbenzene, xylenes, several chlorinated compounds and aldehydes were collected in all microenvironments. Phase I. BEAM examined common non-residential microenvironments that have not been extensively studied, in particular, dining, shopping, and transportation microenvironments. Sampling using scripted activities in these microenvironments. For some compounds,

82

In situ treatment of VOCs by recirculation technologies  

SciTech Connect

The project described herein was conducted by Oak Ridge National Laboratory (ORNL) to identify processes and technologies developed in Germany that appeared to have near-term potential for enhancing the cleanup of volatile organic compound (VOC) contaminated soil and groundwater at DOE sites. Members of the ORNL research team identified and evaluated selected German technologies developed at or in association with the University of Karlsruhe (UoK) for in situ treatment of VOC contaminated soils and groundwater. Project activities included contacts with researchers within three departments of the UoK (i.e., Applied Geology, Hydromechanics, and Soil and Foundation Engineering) during fall 1991 and subsequent visits to UoK and private industry collaborators during February 1992. Subsequent analyses consisted of engineering computations, groundwater flow modeling, and treatment process modeling. As a result of these project efforts, two processes were identified as having near-term potential for DOE: (1) the vacuum vaporizer well/groundwater recirculation well and (2) the porous pipe/horizontal well. This document was prepared to summarize the methods and results of the assessment activities completed during the initial year of the project. The project is still ongoing, so not all facets of the effort are completely described in this document. Recommendations for laboratory and field experiments are provided.

Siegrist, R.L.; Webb, O.F.; Ally, M.R.; Sanford, W.E. [Oak Ridge National Lab., TN (US); Kearl, P.M.; Zutman, J.L. [Oak Ridge National Lab., Grand Junction, CO (US)

1993-06-01T23:59:59.000Z

83

Assessment of subsurface VOCs using a chemical microsensor array. Final report  

SciTech Connect

This report describes the results of laboratory investigations of several performance parameters relevant to surface-acoustic-wave (SAW) chemical sensor arrays for the measurement of volatile organic compounds (VOCs) in contaminated soil and groundwater. The small size, low cost, sensitivity and selectivity of such instruments promise improvements in the quality and quantity of data used to guide site assessment and restoration efforts. In this investigation, calibrations were performed for 15 different coated SAW sensors. Each sensor was exposed to six VOCs selected to represent three chemical classes of contaminants that are commonly found at waste sites (i.e., aliphatic, aromatic and chlorinated hydrocarbons). A new pattern recognition method was developed for determining which coated sensors would maximize the selectivity and accuracy of quantitation for a given set of vapor contaminants. Using this method, an optimal subwet of four coated sensors was selected for testing in a prototype microsensor instrument. Additional laboratory experiments were performed with this optimized array to assess the limits of detection and linear response ranges for the representative vapors, as well as the additivity of responses to vapors in binary mixtures, temperature and humidity effects, aging effects, and other performance parameters related to the application of this technology to soil and groundwater VOC monitoring. Results demonstrate that SAW microsensor arrays can identify and quantify specific VOCs at concentrations in the {mu}g/L to mg/L range when present alone or in simple (e.g., binary) mixtures. SAW sensor technology offers a potentially effective alternative to existing field instrumentation for headspace analysis, soil vapor monitoring, and vacuum extraction process monitoring of VOCs in subsurface media.

Batterman, S.A.; Zellers, E.T. [Michigan Univ., Ann Arbor, MI (United States). School of Public Health

1993-06-01T23:59:59.000Z

84

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

SciTech Connect

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

85

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

SciTech Connect

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

86

Hydrogen Safety Project chemical analysis support task: Window C'' volatile organic analysis  

SciTech Connect

This data package contains the results obtained by Pacific Northwest Laboratory (PNL) staff in the characterization of samples for the 101-SY Hydrogen Safety Project. The samples were submitted for analysis by Westinghouse Hanford Company (WHC) under the Technical Project Plan (TPP) 17667 and the Quality Assurance Plan MCS-027. They came from a core taken during Window C'' after the May 1991 gas release event. The analytical procedures required for analysis were defined in the Test Instructions (TI) prepared by the PNL 101-SY Analytical Chemistry Laboratory (ACL) Project Management Office in accordance with the TPP and the QA Plan. The requested analysis for these samples was volatile organic analysis. The quality control (QC) requirements for each sample are defined in the Test Instructions for each sample. The QC requirements outlined in the procedures and requested in the WHC statement of work were followed.

Gillespie, B.M.; Stromatt, R.W.; Ross, G.A.; Hoope, E.A.

1992-01-01T23:59:59.000Z

87

Hydrogen Safety Project chemical analysis support task: Window ``C`` volatile organic analysis  

SciTech Connect

This data package contains the results obtained by Pacific Northwest Laboratory (PNL) staff in the characterization of samples for the 101-SY Hydrogen Safety Project. The samples were submitted for analysis by Westinghouse Hanford Company (WHC) under the Technical Project Plan (TPP) 17667 and the Quality Assurance Plan MCS-027. They came from a core taken during Window ``C`` after the May 1991 gas release event. The analytical procedures required for analysis were defined in the Test Instructions (TI) prepared by the PNL 101-SY Analytical Chemistry Laboratory (ACL) Project Management Office in accordance with the TPP and the QA Plan. The requested analysis for these samples was volatile organic analysis. The quality control (QC) requirements for each sample are defined in the Test Instructions for each sample. The QC requirements outlined in the procedures and requested in the WHC statement of work were followed.

Gillespie, B.M.; Stromatt, R.W.; Ross, G.A.; Hoope, E.A.

1992-01-01T23:59:59.000Z

88

Photochemical Modeling of Emissions Trading of Highly Reactive Volatile Organic Compounds in Houston, Texas. 1. Reactivity Based Trading and Potential for Ozone Hot Spot Formation  

Science Journals Connector (OSTI)

Photochemical Modeling of Emissions Trading of Highly Reactive Volatile Organic Compounds in Houston, Texas. ... (12)?Thompson, T. M.; Wang, L.; Web, A.; McDonald-Buller, E.; Allen, D. T. Photochemical Modeling of the Air Quality Impacts of an Emissions Trading Program for Highly Reactive Volatile Organic Compounds (HRVOCs) in Texas; Air and Waste Management Association Annual Meeting, New Orleans, June, 2006. ...

Linlin Wang; Tammy Thompson; Elena C. McDonald-Buller; Alba Webb; David T. Allen

2007-02-27T23:59:59.000Z

89

VOC identification and inter-comparison from laboratory biomass burning using PTR-MS and PIT-MS  

Science Journals Connector (OSTI)

Volatile organic compounds (VOCs) emitted from fires of biomass commonly found in the southeast and southwest U.S. were investigated with PTR-MS and PIT-MS, which are capable of fast measurements of a large number of VOCs. Both instruments were calibrated with gas standards and mass dependent calibration curves are determined. The sensitivity of the PIT-MS linearly increases with mass, because the ion trap mass spectrometer used in PIT-MS is more efficient for higher masses, whereas the quadrupole in PTR-MS is most efficient around 70 amu. The identification of \\{VOCs\\} in the complicated mix of the fire emissions was done by gas chromatographic pre separation and inter-comparison with other instrumentation: GC–MS, FTIR, and NI-PT-CIMS. With these state of the art identification methods only 50–75% of the mass detectable by PTR-MS or PIT-MS could be identified. The amount of identified material was dependent on the type of fuel used and the phase of the burns, more can be identified in the flaming stage of the fire. Compounds with masses above 100 amu contributed the largest fraction of the unidentified mass. Emission ratios with CO for all identified and unidentified compounds were determined. Small oxygenated \\{VOCs\\} had the highest emission ratios of the observed compounds.

C. Warneke; J.M. Roberts; P. Veres; J. Gilman; W.C. Kuster; I. Burling; R. Yokelson; J.A. de Gouw

2011-01-01T23:59:59.000Z

90

Regenerative thermal oxidizers for VOC and NO{sub x} -- efficiency and cost  

SciTech Connect

Regenerative fume incinerators or thermal oxidizers have a combustion chamber at about 1,600 F. Heat recovery is provided by switching regenerator beds filled with ceramic. Volatile organic compounds, VOC`s, are about 99% removed along with a thermal efficiency of 90 to 95%. Improvements are discussed which reduce fuel costs, reduce investment cost and give better VOC removal. A method of preventing NO{sub x} formation is presented as well as a possible method for removing NO{sub x} from incoming feed gas. Regenerative fume incinerators or regenerative thermal oxidizers have 3 possible improvements. (1) Add the required fuel to the incoming gas to nearly eliminate NO{sub x} generation while improving thermal efficiency. (2) Remove NO{sub x} from the incoming gas by a new modification of the Exxon Thermal DeNO{sub x} process. (3) Use a new 4-way valve for 1 or 2-bed regenerators to cut investment and improve destruction efficiency.

Houston, R. [Houston Consulting, Hendersonville, NC (United States)

1995-12-31T23:59:59.000Z

91

VOC/HAP control systems for the shipbuilding and aerospace industries  

SciTech Connect

Compliant coating systems, i.e., those which meet limits on pounds of volatile organic compound (VOC)/hazardous air pollutant (HAP) per gallon, on a solids applied basis, are routinely used to meet emission regulations in the shipbuilding and aerospace industries. However, there are occasions when solvent based systems must be used. Total capture and high destruction of the solvents in those systems is necessary in order to meet the required emission limit, e.g., a reasonably available control technology (RACT) limit of 3.5lbs of VOC/gallon. Water based marine coatings and certain aerospace finish coats do not provide sufficient longevity or meet other customer specifications in these instances. Furthermore, because of best available control technology (BACT) determinations or facility limits for operation in serious, severe, and extreme nonattainment areas, it is necessary to reduce annual emissions to levels which are below the levels required by the coating standards. The paper discusses those operations for controlling emissions from large-scale solvent based painting and coating systems in those instances when a high degree of overall control is required. Permanent total enclosures (stationary and portable), concentrators, regenerative thermal oxidizers, and other air pollution control systems are evaluated, both for technical applicability and economic feasibility. Several case studies are presented which illustrate techniques for capturing painting emissions, options for air handling in the workplace, and methods for destroying exhaust stream VOC concentrations of less than 40 ppm.

Lukey, M.E.; Toothman, D.A.

1999-07-01T23:59:59.000Z

92

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

SciTech Connect

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

93

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

94

Transport and sorption of volatile organic compounds and water vapor in porous media  

SciTech Connect

To gain insight on the controlling mechanisms for VOC transport in porous media, the relations among sorbent properties, sorption equilibrium and intraparticle diffusion processes were studied at the level of individual sorbent particles and laboratory columns for soil and activated carbon systems. Transport and sorption of VOCs and water vapor were first elucidated within individual dry soil mineral grains. Soil properties, sorption capacity, and sorption rates were measured for 3 test soils; results suggest that the soil grains are porous, while the sorption isotherms are nonlinear and adsorption-desorption rates are slow and asymmetric. An intragranular pore diffusion model coupled with the nonlinear Freundlich isotherm was developed to describe the sorption kinetic curves. Transport of benzene and water vapor within peat was studied; partitioning and sorption kinetics were determined with an electrobalance. A dual diffusion model was developed. Transport of benzene in dry and moist soil columns was studied, followed by gaseous transport and sorption in activated carbon. The pore diffusion model provides good fits to sorption kinetics for VOCs to soil and VOC to granular activated carbon and activated carbon fibers. Results of this research indicate that: Intraparticle diffusion along with a nonlinea sorption isotherm are responsible for the slow, asymmetric sorption-desorption. Diffusion models are able to describe results for soil and activated carbon systems; when combined with mass transfer equations, they predict column breakthrough curves for several systems. Although the conditions are simplified, the mechanisms should provide insight on complex systems involving transport and sorption of vapors in porous media.

Lin, Tsair-Fuh

1995-07-01T23:59:59.000Z

95

VOC Exposure Metrics  

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

6 6 VOC Exposure Metrics ... and "Sick Building Syndrome" Figure1: The elevated odds ratios (above unity) in this figure suggest that exposures to VOCs from water-based points and solvents are associated with a variety of sick building symptions (* indicates the OR is significant at p < 0.05; ** for p < 0.01). The indoors is often regarded as safe haven from problems associated with outdoor air pollution, but a growing number of reports have suggested that exposures in indoor environments may lead to health problems. One area in which evidence has been accumulating is the relationship between working in office buildings (as opposed to industrial exposure conditions) and a variety of health effects, such as eye, nose, and throat irritation and

96

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

SciTech Connect

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

97

Recent VOC Control Test Data for a Reactive VOC Converter- Scrubber System for Non-Thermal Control of VOCs  

E-Print Network (OSTI)

of real estate. Non-thermal VOHAP (Volatile Organic Hazardous Air Pollutant) emission control devices require additional maintenance. They also require the replacement of costly consumables such as activated carbon or they use large amounts of energy...

McGinness, M.

98

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

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

51 SEDIMENT-TO-AIR MASS TRANSFER OF SEMI-VOLATILE CONTAMINANTS DUE TO SEDIMENT RESUSPENSION IN WATER Summary: @lsuvm.sncc.lsu.edu ABSTRACT Experiments were conducted to...

99

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

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

100

Characterization of volatile organic compounds (VOCs) in Asian and north American pollution plumes during INTEX-B: identification of specific Chinese air mass tracers  

E-Print Network (OSTI)

1,2-DCE), ethane, ethyne, propane, butanes, i-pentane, andDCE Ethane Ethene Ethyne Propane i-Butane n-Butane i-PentaneDCE Ethane Ethene Ethyne Propane i-Butane n-Butane i-Pentane

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vocs 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

Characterization of volatile organic compounds (VOCs) in Asian and north American pollution plumes during INTEX-B: identification of specific Chinese air mass tracers  

E-Print Network (OSTI)

coal and biofuel combustion and biomass burning (Khalil andcombustion products ethyne and benzene, and of the biomass/combustion tracer ethyne, the industrial solvent CH 2 Cl 2 , and the two coal/biomass

2009-01-01T23:59:59.000Z

102

Cold Temperature and Biodiesel Fuel Effects on Speciated Emissions of Volatile Organic Compounds from Diesel Trucks  

Science Journals Connector (OSTI)

Emissions testing was conducted on a chassis dynamometer at two ambient temperatures (?7 and 22 °C) operating on two fuels (ultra low sulfur diesel and 20% soy biodiesel blend) over three driving cycles: cold start, warm start and heavy-duty urban dynamometer driving cycle. ... Different 2007+ aftertreatment technologies involving catalyst regeneration led to significant modifications of VOC emissions that were compound-specific and highly dependent on test conditions. ... However, emissions of other toxic partial combustion products such as carbonyls were not reduced in the modern diesel vehicles tested. ...

Ingrid J. George; Michael D. Hays; Richard Snow; James Faircloth; Barbara J. George; Thomas Long; Richard W. Baldauf

2014-11-13T23:59:59.000Z

103

Numerical simulation of VOC Emissions from Dry Materials , J.S. Zhang2  

E-Print Network (OSTI)

, subfloors), and insulation materials (fiberglass, rigid foam) emit a variety of volatile organic compounds

Chen, Qingyan "Yan"

104

Work plan for support to Upper East Fork Poplar Creek east end VOC plumes well installation project at the Oak Ridge Y-12 Plant, Oak Ridge, Tennessee  

SciTech Connect

Under the Resource Conservation and Recovery Act of 1976 guidelines and requirements from the Tennessee Department of Environment and Conservation (TDEC), the Y-12 Plant initiated investigation and monitoring of various sites within its boundaries in the mid-1980s. The entire Oak Ridge Reservation (ORR) was placed on the National Priorities List of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) sites in November 1989. Following CERCLA guidelines, sites within the ORR require a remedial investigation (RI) to define the nature and extent of contamination, evaluate the risks to public health and the environment, and determine the goals for a feasibility study (FS) or an engineering evaluation/cost analysis (EE/CA) of potential remedial actions. Data from monitoring wells at the east end of the Y-12 Plant have identified an area of groundwater contamination dominated by the volatile organic compound (VOC) carbon tetrachloride; other VOCs include chloroform, tetrachloroethene, and trichloroethene.

NONE

1998-03-01T23:59:59.000Z

105

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

SciTech Connect

'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

106

VOC recovery using microwave regeneration of adsorbents: Pilot-column studies  

SciTech Connect

A pilot-scale column was constructed to evaluate the technical feasibility of microwave (MW) heating as a means of regenerating adsorbents for recovery of volatile organic compounds (VOCs). The 6 inch diameter moving-bed column, which has a throughput capacity of 200 lb/hr of adsorbent, is representative of a full-scale component of a small-capacity recovery system or a single element of a large-capacity system. Regeneration experiments were conducted to study the effects of key process variables, including adsorbent and stripping gas feed rates, initial adsorbent coverage and microwave power input, on column performance. Two adsorbents with contrasting dielectric loss characteristics were studied, Dowex Optipore L502 (low dielectric loss styrene-based) and Rohm and Haas Ambersorb 600 (moderate dielectric loss carbonaceous). Adsorbates included polar and nonpolar compounds: isopropyl alcohol (iPA), methyl ethyl ketone (MEK) and toluene. Solvent recovery rates of 20--30 lbs/hr were achieved. The results of the pilot-column experiments demonstrate that axial temperature and desorption profiles are dependent on the dielectric characteristics of the adsorbent/sorbate pair, and that final regeneration coverage can be correlated with a dimensionless stripping gas ratio and final adsorbent temperature. Implications for design of microwave-regenerated VOC recovery systems are discussed.

Salinas, M.J.; Price, D.W.; Schmidt, P.S.

1999-07-01T23:59:59.000Z

107

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

108

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

109

4, 66916718, 2004 VOC emissions of  

E-Print Network (OSTI)

ACPD 4, 6691­6718, 2004 VOC emissions of Scots pine V. Tarvainen et al. Title Page Abstract Discussions Temperature and light dependence of the VOC emissions of Scots pine V. Tarvainen 1 , H. Hakola 1.tarvainen@fmi.fi) 6691 #12;ACPD 4, 6691­6718, 2004 VOC emissions of Scots pine V. Tarvainen et al. Title Page Abstract

Paris-Sud XI, Université de

110

Intake of Toxic and Carcinogenic Volatile Organic Compounds from Secondhand Smoke in Motor Vehicles  

Science Journals Connector (OSTI)

...BR.Measurement of emissions from air pollution sources. 5. C1-C32 organic compounds...Ott W , Klepeis N, Switzer P.Air change rates of motor vehicles and...experimental investigation of tobacco smoke pollution in cars.Nicotine Tob Res 2009...

Gideon St.Helen; Peyton Jacob III; Margaret Peng; Delia A. Dempsey; S. Katharine Hammond; and Neal L. Benowitz

2014-12-01T23:59:59.000Z

111

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

112

A novel Whole Air Sample Profiler (WASP) for the quantification of volatile organic compounds in the boundary layer  

SciTech Connect

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

113

A Novel New Approach to VOC and HAP Emission Control  

E-Print Network (OSTI)

of real estate. Non-thermal VOHAP (Volatile Organic Hazardous Air Pollutant) emission control devices require additional maintenance. They also require the replacement of costly consumables such as activated carbon or they use large amounts of energy...

McGinness, M.

114

Stripping of organic compounds from wastewater as an auxiliary fuel of regenerative thermal oxidizer  

Science Journals Connector (OSTI)

Organic solvents with different volatilities are widely used in various processes and generate air and water pollution problems. In the cleaning processes of electronics industries, most volatile organic compounds (VOCs) are vented to air pollution control devices while most non-volatile organic solvents dissolve in the cleaning water and become the major sources of COD in wastewater. Discharging a high-COD wastewater stream to wastewater treatment facility often disturbs the treatment performance. A pretreatment of the high-COD wastewater is therefore highly desirable. This study used a packed-bed stripping tower in combination with a regenerative thermal oxidizer to remove the COD in the wastewater from a printed circuit board manufacturing process and to utilize the stripped organic compounds as the auxiliary fuel of the RTO. The experimental results showed that up to 45% of the COD could be removed and 66% of the RTO fuel could be saved by the combined treatment system.

Meng-Wen Chang; Jia-Ming Chern

2009-01-01T23:59:59.000Z

115

Sorption of organic gases in residential rooms  

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

residential rooms residential rooms Title Sorption of organic gases in residential rooms Publication Type Journal Article LBNL Report Number LBNL-59303 Year of Publication 2007 Authors Singer, Brett C., Alfred T. Hodgson, Toshifumi Hotchi, Katherine Y. Ming, Richard G. Sextro, Emily E. Wood, and Nancy J. Brown Journal Atmospheric Environment Volume 41 Start Page Chapter Pagination 3251-3265 Keywords adsorption, hazardous air pollutants, nerve agents, sink effect, volatile organic compounds Abstract Experiments were conducted to characterize organic gas sorption in residential rooms studied ''as-is'' with furnishings and material surfaces unaltered and in a furnished chamber designed to simulate a residential room. Results are presented for 10 rooms (five bedrooms, two bathrooms, a home office, and two multi-function spaces) and the chamber. Exposed materials were characterized and areas quantified. A mixture of volatile organic compounds (VOCs) was rapidly volatilized within each room as it was closed and sealed for a 5-h Adsorb phase; this was followed by 30-min Flush and 2-h closed-room Desorb phases. Included were alkane, aromatic, and oxygenated VOCs representing a range of ambient and indoor air pollutants. Three organophosphorus compounds served as surrogates for Sarin-like nerve agents. Measured gas-phase concentrations were fit to three variations of a mathematical model that considers sorption occurring at a surface sink and potentially a second, embedded sink. The 3-parameter sink-diffusion model provided acceptable fits for most compounds and the 4-parameter two-sink model provided acceptable fits for the others. Initial adsorption rates and sorptive partitioning increased with decreasing vapor pressure for the alkanes, aromatics and oxygenated VOCs. Best-fit sorption parameters obtained from experimental data from the chamber produced best-fit sorption parameters similar to those obtained from the residential rooms

116

Treatment of \\{VOCs\\} with molecular sieve catalysts in regenerative catalytic oxidizer  

Science Journals Connector (OSTI)

This work prepares molecular sieve catalysts with various metal species and various metal weight loadings by impregnation, and then screens them in a catalytic combustion system. The current study further investigates the molecular sieve catalyst in an RCO system after it performed well in combustion efficiency. This work tests its performances in terms of CO2 yield, pressure drop, the difference between temperatures of the inlet and outlet gases (Td), and thermal recovery efficiency (TRE), with various operational conditions. Experimental results demonstrate that the 10 wt% Cu/(MS) catalyst was the most active because it has the greatest combustion efficiency to treat volatile organic compounds (VOCs) than Co/(MS) catalysts and Mn/(MS) catalysts. The 10 wt% Cu/(MS) catalyst used in an RCO system reaches over 95% CO2 yields under the heating zone temperature (Tset) = 400 °C, gas velocity (Ug) = 0.37 m/s, isopropyl alcohol (IPA) concentration = 200–400 ppm conditions. Moreover, the RCO system performed well in economic efficiency with the RCO with in terms of TRE, Td and pressure drop. The TRE ranged from 90.4% to 94.6% and Td ranged from 14.0 to 34.2 °C under various conditions at Tset = 300–450 °C. Finally, the results of the stability test demonstrated that the catalyst was very stable at various Ug values and various Tset values.

Shih-Wei Huang; Jie-Chung Lou; Yung-Chang Lin

2010-01-01T23:59:59.000Z

117

Atmos. Chem. Phys., 8, 11391152, 2008 www.atmos-chem-phys.net/8/1139/2008/  

E-Print Network (OSTI)

., 2005). A recent global mass-balance calculation for the removal of volatile organic compounds (VOCs

Boyer, Edmond

118

VOC Destruction by Catalytic Combustion Microturbine  

SciTech Connect

This project concerned the application of a catalytic combustion system that has been married to a micro-turbine device. The catalytic combustion system decomposes the VOC's and transmits these gases to the gas turbine. The turbine has been altered to operate on very low-level BTU fuels equivalent to 1.5% methane in air. The performance of the micro-turbine for VOC elimination has some flexibility with respect to operating conditions, and the system is adaptable to multiple industrial applications. The VOC source that was been chosen for examination was the emissions from coal upgrading operations. The overall goal of the project was to examine the effectiveness of a catalytic combustion based system for elimination of VOCs while simultaneously producing electrical power for local consumption. Project specific objectives included assessment of the feasibility for using a Flex-Microturbine that generates power from natural gas while it consumes VOCs generated from site operations; development of an engineering plan for installation of the Flex-Microturbine system; operation of the micro-turbine through various changes in site and operation conditions; measurement of the VOC destruction quantitatively; and determination of the required improvements for further studies. The micro-turbine with the catalytic bed worked effectively to produce power on levels of fuel much lower than the original turbine design. The ability of the device to add or subtract supplemental fuel to augment the amount of VOC's in the inlet air flow made the device an effective replacement for a traditional flare. Concerns about particulates in the inlet flow and the presence of high sulfur concentrations with the VOC mixtures was identified as a drawback with the current catalytic design. A new microturbine design was developed based on this research that incorporates a thermal oxidizer in place of the catalytic bed for applications where particulates or contamination would limit the lifetime of the catalytic bed.

Tom Barton

2009-03-10T23:59:59.000Z

119

Sorption of organic gases in a furnished room  

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

a furnished room a furnished room Title Sorption of organic gases in a furnished room Publication Type Journal Article LBNL Report Number LBNL-53943 Year of Publication 2004 Authors Singer, Brett C., Kenneth L. Revzan, Toshifumi Hotchi, Alfred T. Hodgson, and Nancy J. Brown Journal Atmospheric Environment Volume 38 Start Page Chapter Issue 16 Pagination 2483-2494 Abstract We present experimental data and semi-empirical models describing the sorption of organic gases in a simulated indoor residential environment. Two replicate experiments were conducted with 20 volatile organic compounds (VOCs) in a 50-m3 room finished with painted wallboard, carpet and cushion, draperies and furnishings. The VOCs span a wide volatility range and include ten Hazardous Air Pollutants. VOCs were introduced to the static chamber as a pulse and their gas-phase concentrations were measured during a net adsorption period and a subsequent net desorption period. Three sorption models were fit to the measured concentrations for each compound to determine the simplest formulation needed to adequately describe the observed behavior. Sorption parameter values were determined by fitting the models to adsorption period data then checked by comparing measured and predicted behavior during desorption. The adequacy of each model was evaluated using a goodness of fit parameter calculated for each period. Results indicate that sorption usually does not greatly affect indoor concentrations of methyl-tert-butyl ether, 2-butanone, isoprene and benzene. In contrast, sorption appears to be a relevant indoor process for many of the VOCs studied, including C8-C10 aromatic hydrocarbons (HC), terpenes, and pyridine. These compounds sorbed at rates close to typical residential air change rates and exhibited substantial sorptive partitioning at equilibrium. Polycyclic aromatic HCs, aromatic alcohols, ethenylpyridine and nicotine initially adsorbed to surfaces at rates of 1.5 to >6 h-1 and partitioned 95 to >99% in the sorbed phase at equilibrium

120

Characterization of trace gases measured over Alberta oil sands mining operations: 76 speciated C2-C10 volatile organic compounds (VOCs), CO2, CH4, CO, NO, NO2, NOy, O3 and SO2  

E-Print Network (OSTI)

3. Continued. SO 2 NO Ethene Propane n- Butane n- Heptanebetween CH 4 , ethane and propane suggest low levels ofa n/a n/a Alkanes Ethane Propane i-Butane n-Butane i-Pentane

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vocs 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

Boreal forest fire emissions in fresh Canadian smoke plumes: C1-C10 volatile organic compounds (VOCs), CO2, CO, NO2, NO, HCN and CH3CN  

E-Print Network (OSTI)

propene, acetone, benzene, propane and ?-pinene (Table 1).cyanide Acetonitrile Ethane Propane i-Butane n-Butane i-= Ethane Ethane Ethane Ethane Propane Propane Propane ARCTAS

2011-01-01T23:59:59.000Z

122

Photocatalytic Degradation of VOC's by TOTO's Hydrotect (TiO2 Impregnated) Surfaces  

E-Print Network (OSTI)

, naturally occurs in wood and volcanic gases. Decaying organic matter can also produce methanol. Paint. This report describes the photocatalytic degradation of formaldehyde and methanol, two common VOC's, by TiO2 and methanol tests (Land et al., 2008). A standardized aqueous solution of formaldehyde and methanol was used

Bergin, Mike

123

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

124

Embedded Electronic Nose for VOC Mixture Analysis  

SciTech Connect

This paper details the work done towards a low cost, small size, portable embedded electronic nose (e-nose) and its application for analysis of different VOC mixtures. The sensor array is composed of commercially available metal oxide semiconductor sensors by Figaro. The embedded E-nose consists of an ADuC831 and has an RS 232 interface for Desktop PC for higher level data collection and NN training. The ESP tool with database facility and multilayer perceptron neural network (MLP NN) is employed to interface the embedded hardware and to process the electronic nose signals before being classified. The use of embedded e-nose for the quantification of VOCs in mixtures is investigated.

Botre, B.; Gharpure, D.; Shaligram, A. [Department of Electronic Science, University of Pune, Pune: 411007 (India)

2009-05-23T23:59:59.000Z

125

Flexible CHP System with Low NOx, CO, and VOC Emissions - Presentation...  

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

CHP System with Low NOx, CO, and VOC Emissions - Presentation by the Gas Technology Institute (GTI), June 2011 Flexible CHP System with Low NOx, CO, and VOC Emissions -...

126

E-Print Network 3.0 - air voc flow Sample Search Results  

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

Geosciences 28 ACCEPTED BY WATER ENVIRONMENT RESEARCH ODOR AND VOC REMOVAL FROM WASTEWATER TREATMENT PLANT Summary: of biofilters for sequential removal of H2S and VOCs from...

127

Sorption of organic gases in residential bedrooms and bathrooms  

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

Sorption of organic gases in residential bedrooms and bathrooms Sorption of organic gases in residential bedrooms and bathrooms Title Sorption of organic gases in residential bedrooms and bathrooms Publication Type Conference Paper LBNL Report Number LBNL-56787 Year of Publication 2005 Authors Singer, Brett C., Alfred T. Hodgson, Toshifumi Hotchi, Katherine Y. Ming, Richard G. Sextro, Emily E. Wood, and Nancy J. Brown Conference Name Proceedings of the 10th International Conference on Indoor Air Quality and Climate - Indoor Air 2005 Volume 2(9) Publisher Tsinghua University Press Conference Location Beijing, China Abstract Experiments were conducted to characterize organic gas sorption in residential bedrooms (n=4), bathrooms (n=2), and a furnished test chamber. Rooms were studied "as-is" with material surfaces and furnishings unaltered. Surface materials were characterized and areas quantified. Experiments included rapid volatilization of a volatile organic compound (VOC) mixture with the room closed and sealed for a 5-h Adsorb phase, followed by 30-min Flush and 2-h closed-room Desorb phases. The mixture included n-alkanes, aromatics, glycol ethers, 2-ethyl-1-hexanol, dichlorobenzene, and organophosphorus compounds. Measured gas-phase concentrations were fit to three variations of a mathematical model that considers sorption occurring at one surface sink and one potential embedded sink. The 2-parameter sink model tracked measurements for most compounds, but improved fits were obtained for some VOCs with a 3-parameter sink-diffusion or a 4-parameter two-sink model. Sorptive partitioning and initial adsorption rates increased with decreasing vapour pressure within each chemical class.

128

What Is Price Volatility  

Gasoline and Diesel Fuel Update (EIA)

What Is Price Volatility? What Is Price Volatility? The term "price volatility" is used to describe price fluctuations of a commodity. Volatility is measured by the day-to-day percentage difference in the price of the commodity. The degree of variation, not the level of prices, defines a volatile market. Since price is a function of supply and demand, it follows that volatility is a result of the underlying supply and demand characteristics of the market. Therefore, high levels of volatility reflect extraordinary characteristics of supply and/or demand. Prices of basic energy (natural gas, electricity, heating oil) are generally more volatile than prices of other commodities. One reason that energy prices are so volatile is that many consumers are extremely limited in their ability to substitute other fuels when the price, of natural gas

129

Derivative Usage and Performance Volatility  

Science Journals Connector (OSTI)

Derivative usage that reduces return volatility is frequently termed hedging, and derivative usage that increases return volatility is called speculation. ... reduce or increase their return volatility with deriv...

Weiying Jia; Yi Kang

2012-01-01T23:59:59.000Z

130

Mobilization and Transport of Organic Compounds from Reservoir Rock and Caprock in Geological Carbon Sequestration Sites  

SciTech Connect

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

131

Regenerative thermal oxidation and alternative technologies for VOC control  

SciTech Connect

Thermal oxidation technologies have been used successfully to control VOC`s for many years but the recent 1990 Clean Air Act Amendments have spurred improvements in the established processes and development of economic alternatives. The combination of the regulatory maze and confusion in the selection of the best technology for a particular application has created a potential nightmare for those companies facing a need to reduce their VOC EMISSIONS. The relative advantages and disadvantages of regenerative, recuperative and catalytic oxidizers will be reviewed, with an emphasis on the economic justification for regenerative thermal oxidation (RTO). Control efficiencies of more than 99% have been demonstrated for RTO`s on a multitude of industrial process exhaust streams. Lowest evaluated cost over a fifteen to twenty year effective equipment life is a key selection criteria. This paper describes the underlying principles of thermal oxidation, and discusses the applicability of these and other emerging technologies for VOC control.

Biedell, E.L. [REECQ, Somerville, NJ (United States)

1995-12-31T23:59:59.000Z

132

The Emissions of Major Aromatic Voc as Landfill Gas from Urban Landfill Sites in Korea  

Science Journals Connector (OSTI)

In this study, concentrations of major aromatic VOCs were determined from landfill gas (LFG) at a total of five...?1 (WJ in wintertime). The LFG flux values of aromatic VOC, when compared to the contribution of n...

Ki-Hyun Kim; Sung Ok Baek; Ye-Jin Choi…

2006-07-01T23:59:59.000Z

133

Membrane applications to control VOC emissions  

SciTech Connect

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

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

1996-12-31T23:59:59.000Z

134

VOC Emission Control with the Brayton Cycle Pilot Plant Operations  

E-Print Network (OSTI)

A mobile pilot plant capable of removing VOC emissions from exhaust air streams was cooperatively funded by SCE, EPRI, 3M, and NUCON. Valuable information about the process and the recovery operation has been gained by performing tests at a number...

Enneking, J. C.

135

ORIGINAL PAPER L. Voc adlo K. S. Knight G. D. Price I. G. Wood  

E-Print Network (OSTI)

ORIGINAL PAPER L. VocÏ adlo á K. S. Knight á G. D. Price á I. G. Wood Thermal expansion and crystal discussed by Wood et al. (1996), VocÏ adlo et al. (1999, 2000) and Mattheiss and Hamann (1993002690100202 L. VocÏ adlo (&) á G. D. Price á I. G. Wood Department of Geological Sciences, University College

Vocadlo, Lidunka

136

HELSINKI UNIVERSITY OF TECHNOLOGY ENE-47.153 VOCsVOCs,, PAHsPAHs, soot, tar, CO, soot, tar, CO  

E-Print Network (OSTI)

oxides in the presence of sunlight" (McConville, 1997) PAH polycyclic aromatic hydrocarbon tar or liquid fuel components during combustion THC,TOC totalhydrocarbon,totalorganiccarbon HAP (USA with heat recuperationThermal VOC incinerator with heat recuperation 150150EEEEF=66F=66EEEEC, 600C, 600EEEEF

Zevenhoven, Ron

137

O3-NOx-VOC sensitivity and NOx-VOC indicators in Paris: Results from models and Atmospheric Pollution Over  

E-Print Network (OSTI)

from the Atmospheric Pollution Over the Paris Area campaign near Paris, with special attention Composition and Structure: Pollution--urban and regional (0305); 0365 Atmospheric Composition and Structure-VOC indicators in Paris: Results from models and Atmospheric Pollution Over the Paris Area (ESQUIF) measurements

Menut, Laurent

138

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

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

139

Oil Price Volatility  

U.S. Energy Information Administration (EIA) Indexed Site

Speculation and Oil Price Volatility Speculation and Oil Price Volatility Robert J. Weiner Robert J. Weiner Professor of International Business, Public Policy & Professor of International Business, Public Policy & Public Administration, and International Affairs Public Administration, and International Affairs George Washington University; George Washington University; Membre Associ Membre Associ Ă© Ă© , GREEN, Universit , GREEN, Universit Ă© Ă© Laval Laval EIA Annual Conference Washington Washington 7 April 2009 7 April 2009 1 FACTORS DRIVNG OIL PRICE VOLATILITY FACTORS DRIVNG OIL PRICE VOLATILITY â–ş â–ş Market fundamentals Market fundamentals . . Fluctuations in supply, Fluctuations in supply, demand, and market power demand, and market power Some fundamentals related to expectations of Some fundamentals related to expectations of

140

Chapter 10 - Regenerative catalytic oxidizer technology for VOC control  

Science Journals Connector (OSTI)

Publisher Summary The regenerative catalytic oxidizer (RCO) technology has evolved significantly as an efficient method to control volatile organic compounds. The RCO technology favors using oxide catalysts because it allows for easy compensation of lower activity by an increase in the catalyst amount or temperature. Heat transfer and accumulation properties of ceramic packing material strongly influence RCO performance. The rate of heat transfer affects the temperature gradients along the bed length that, in turn, determine the volume of material required to preheat the gas to the temperature of catalytic or thermal oxidation. During the catalyst operation, it gradually becomes less active and must be eventually replaced. The factors affecting the catalyst lifetime include high temperature, catalytic poisons, and masking agents. Compounds of halogens and sulfur are the most common catalyst poisons. Temperature control, poison tolerant catalysts, and gas-flow pretreatment are used to reduce the impact of catalyst deactivation. This chapter also presents the behavior of an RCO when the catalyst deactivates, and proposes strategies ensuring the required performance during the entire catalyst lifetime.

V.O. Strots; G.A. Bunimovich; C.R. Roach; Yu.Sh. Matros

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vocs 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

Petroleum Outlook:.More Volatility?  

Gasoline and Diesel Fuel Update (EIA)

Outlook: More Volatility? Outlook: More Volatility? 3/19/01 Click here to start Table of Contents Petroleum Outlook: More Volatility? Product Price Volatility-This Year and in the Future WTI Crude Oil Price: Potential for Volatility Around Base Case OPEC Crude Oil Production 1998-2001 Annual World Oil Demand Growth by Region, 1991-2001 Low Total OECD Oil Stocks* Keep Market Balance Tight Fundamentals Explain High Crude Oil Prices Product Price Spreads Over Crude Oil Reflect Product Market-Based Volatility U.S. Distillate Inventories Distillate Winter Demand Stronger Than Temperatures Would Imply High Production Offset Lack of Inventory High Production Came From High Yields & High Inputs High Margins Bring High Imports Gasoline Price Volatility Is a Concern This Summer Gasoline Volatility

142

Flexible CHP System with Low NOx, CO and VOC Emissions | Department...  

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

Emissions Flexible CHP System with Low NOx, CO and VOC Emissions Introduction A combined heat and power (CHP) system can be a financially attractive energy option for many...

143

Implementation of VOC source reduction practices in a manufactured house and in school classrooms  

SciTech Connect

Detailed studies of a new manufactured house and four new industrialized relocatable school classrooms were conducted to determine the emission sources of formaldehyde and other VOCs and to identify and implement source reduction practices. Procedures were developed to generate VOC emission factors that allowed reasonably accurate predictions of indoor air VOC concentrations. Based on the identified sources of formaldehyde and other aldehydes, practices were developed to reduce the concentrations of these compounds in new house construction. An alternate ceiling panel reduced formaldehyde concentrations in the classrooms. Overall, the classrooms had relatively low VOC concentrations.

Hodgson, A.T.; Apte, M.G.; Shendell, D.G.; Beal, D.; McIlvaine, J.E.R.

2002-01-01T23:59:59.000Z

144

Measurement of VOC reactivities using a photochemical flow reactor  

SciTech Connect

A commercial ambient air monitoring instrument, the Airtrak 2000, has been modified for use as a photochemical flow reactor and used to measure the absolute and incremental reactivity of 18 single test VOCs and the incremental reactivity of six multicomponent VOC mixtures. A flow technique is a useful supplement to traditional static chamber experiments. The static chamber technique involves periodic sampling of an irradiated mixture in a photochemical chamber. Under these conditions, the irradiated mixture is always in transition. Using a flow system, a steady-state condition is established within the flow reactor that is representative, in this case, of the early stages of the smog forming process in the atmosphere. The measurement technique also allows changes in the background chamber reactivity to be monitored and taken into account. The incremental reactivity of 13 of the 18 test compounds measured is compared with previously reported results from a static chamber experiment, and the two data sets are generally in good agreement. The additivity of reactivity was tested by measuring the incremental reactivity of six multicomponent mixtures, the components being compounds measured individually in this study. The measured reactivity of a mixture was compared to that calculated from the sum of the measured reactivity of the mixture`s individual components. The results show that reactivity is additive for the concentration range studied.

Hurley, M.D.; Chang, T.Y.; Japar, S.M.; Wallington, T.J. [Ford Motor Co., Dearborn, MI (United States). Ford Research Lab.] [Ford Motor Co., Dearborn, MI (United States). Ford Research Lab.

1998-07-01T23:59:59.000Z

145

Microwave plasma conversion of volatile organic compounds  

E-Print Network (OSTI)

MHz; Gerling Laboratory) and a resonant plasma tuner (ASTEX) were used to generate an argon/steam- based plasma at one atmosphere

Ko, Y; Yang, G S; Chang, DPY; Kennedy, Ian M

2003-01-01T23:59:59.000Z

146

ACCEPTED BY WATER ENVIRONMENT RESEARCH ODOR AND VOC REMOVAL FROM WASTEWATER TREATMENT PLANT  

E-Print Network (OSTI)

of their high rates of chemical consumption. Additionally, chemical scrubbers are ineffective for the removalACCEPTED BY WATER ENVIRONMENT RESEARCH _______ ODOR AND VOC REMOVAL FROM WASTEWATER TREATMENT PLANT of biofilters for sequential removal of H2S and VOCs from wastewater treatment plant waste air. The biofilter

147

CSTB / CTBA Wood Preservation -Cannes 2001 MEASUREMENT OF VOC EMISSIONS FROM CURATIVE TREATED WOOD  

E-Print Network (OSTI)

CSTB / CTBA Wood Preservation - Cannes 2001 1 MEASUREMENT OF VOC EMISSIONS FROM CURATIVE TREATED WOOD : A NEW EMISSION TEST CHAMBER METHOD François MAUPETIT1 , Olivier RAMALHO1 and Christophe YRIEIX2 wood, emission test chamber, VOCs Introduction A poor indoor air quality (IAQ) is now recognized

Paris-Sud XI, Université de

148

Organization  

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

Organization Print Organization Print 2012-12 org chart A complete ALS organization chart (June 2013) is available in PDF. Appointed and elected members of advisory panels provide guidance to Berkeley Lab and ALS management in developing the ALS scientific and user programs. ALS Staff Photo staff photo thumb Click on the image to see a recent photo of ALS staff in front of the dome. The photo was taken on May 14, 2013. ALS Management and Advisory Team Steve Kevan, Deputy Division Director, Science Michael J. Banda, Deputy Division Director, Operations Robert W. Schoenlein, Senior Staff Scientist, Next Generation Light Source Initiative Janos Kirz, Scientific Advisor Paul Adams, Division Deputy for Biosciences ALS Scientific, Technical, and User Support Groups Accelerator Physics

149

Application of Electron Beams for the Treatment of VOC Streams  

Science Journals Connector (OSTI)

Department of Material Development, Japan Atomic Energy Research Institute, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan, and Advanced Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan ... However, VOC emissions to the atmosphere accounted for more than 80% of the total emission of 898?308 t/year to the environment in 2001, according to reports from the industrial corporations handling pollutants listed in the PRTR registry and the estimation of pollutant emissions from nonregistered corporations, mobile sources, and households.2 Figure 1 shows the emission amounts of the 10 highest-ranked substances reported by the PRTR in 2001. ...

Koichi Hirota; Hiroki Sakai; Masakazu Washio; Takuji Kojima

2004-01-22T23:59:59.000Z

150

Services Initiatives | Department of Energy  

Energy Savers (EERE)

and is very low in Volatile Organic Compounds (VOCs) which evaporate little and cause no air pollution, whereas petroleum-based inks are high in VOCs and cause air pollution when...

151

ACCU Core Sampling/Storage Device for VOC Analysis  

SciTech Connect

The Accu Core sampler system consists of alternating cylindrical clear acrylic sections and one-inch cylindrical stainless steel sections arranged in clear shrink wrap. The set of alternating acrylic and stainless steel sections in the shrink wrap are designed to fit in a Geoprobe dual-tube penetrometer for collection of continuous soil cores. The clear acrylic sections can have 1/2-inch access holes for easy soil headspace screening without violating the integrity of the adjacent stainless steel sections. The Accu Core sampler system can be used to store a soil sample collected in the stainless steel section by capping the ends of the section so it becomes a sample storage container. The sampler system can also be used to collect a subsurface soil sample in one of the sections that can be directly extruded from the section into a container for storage during shipment to the laboratory. In addition, the soil in a sampler section can be quickly sub-sampled using a coring tool and extruded into a storage container so the integrity of the soil is not disrupted and the potential for VOC loss during sub-sampling is greatly reduced. A field validation study was conducted to evaluate the performance of the Accu Core sampler to store VOC soil samples during transportation to the laboratory for analysis and to compare the performance of the Accu Core with current sampling and storage techniques, all of which require sub-sampling when the soil sample is brought to the surface. During some of the validation testing, the acrylic sections having access holes for headspace screening were included in the Accu Core sampler configuration and soil in these sections was screened to show the usefulness of the sample screening capability provided by the Accu Core system. This report presents the results of the field validation study as well as recommendations for the Accu Core sampler system.

Susan S. Sorini; John F. Schabron; Mark M. Sanderson

2007-04-30T23:59:59.000Z

152

Effect of outside air ventilation rate on VOC concentrations and emissions  

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

Effect of outside air ventilation rate on VOC concentrations and emissions Effect of outside air ventilation rate on VOC concentrations and emissions in a call center Title Effect of outside air ventilation rate on VOC concentrations and emissions in a call center Publication Type Conference Proceedings Year of Publication 2002 Authors Hodgson, Alfred T., David Faulkner, Douglas P. Sullivan, Dennis L. DiBartolomeo, Marion L. Russell, and William J. Fisk Conference Name Proceedings of the Indoor Air 2002 Conference, Monterey, CA Volume 2 Pagination 168-173 Publisher Indoor Air 2002, Santa Cruz, CA Abstract A study of the relationship between outside air ventilation rate and concentrations of VOCs generated indoors was conducted in a call center. Ventilation rates were manipulated in the building's four air handling units (AHUs). Concentrations of VOCs in the AHU returns were measured on 7 days during a 13- week period. Indoor minus outdoor concentrations and emission factors were calculated. The emission factor data was subjected to principal component analysis to identify groups of co-varying compounds based on source type. One vector represented emissions of solvents from cleaning products. Another vector identified occupant sources. Direct relationships between ventilation rate and concentrations were not observed for most of the abundant VOCs. This result emphasizes the importance of source control measures for limiting VOC concentrations in buildings

153

DOE/RL-96-68  

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

100114 Vol. 4: ix RPD Relative Percent Difference RSD Relative Standard Deviation TIC Tentatively Identified Compound TPU Total Propagated Uncertainty VOC Volatile Organic...

154

Low-Cost Packaged Combined Heat and Power System with Reduced...  

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

monoxide (CO), and volatile organic compounds (VOCs) * Yearly reduction of carbon dioxide emissions by 950 tons com- pared to separate generation of electricity and heat,...

155

APPENDIX E. AIRNOVA, INC. EMISSION EVALUATION TEST REPORT  

E-Print Network (OSTI)

.6 Specific Volatile Organic Compounds . . . . . . . . . . . . . . . . 27 4.7 Dioxins, Furans, and PCBs)* · Volatile Organic Compounds (VOCs)* · Sulfur Dioxide (SO2)* · Dioxins and Furans · Toxic Metals

Brookhaven National Laboratory

156

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

157

Energy Efficient Indoor VOC Air Cleaning with Activated Carbon Fiber (ACF) Filters  

E-Print Network (OSTI)

The existing particle filters in HVAC systems of buildingscandidates for use as VOC filters in HVAC systems. Recentcost of an ACF filter bed in an HVAC system is the energy

Sidheswaran, Meera

2012-01-01T23:59:59.000Z

158

Volatiles from sheep wool and the modification of wool odour  

Science Journals Connector (OSTI)

Compounds in the headspace of a variety of wool samples and greases have been analysed with the aid of solid phase microextraction using a carboxen-polydimethylsiloxane coated fibre. Volatiles were analysed by gas chromatography/mass spectrometry, while sulphur-containing compounds were analysed using gas chromatography/pulsed flame photometric detector. The volatile organic compounds released from scoured sheep wool and wool grease were investigated in vials under dry and humid conditions between 20 and 40 °C. A laboratory scale scouring apparatus was also used to investigate the emission of volatiles at different stages of the wool scouring process. A variety of volatile compounds, including sulphur-containing compounds, were emitted with their concentration increasing with temperature and humidity in most cases. There was a progressive decrease in the number of volatiles released after various stages of the wool scouring process. Wool grease emitted an assortment of volatile compounds, many of which were also detected in the headspace of scoured wool. Degradation of wool and particularly wool grease is thought to be responsible for the occurrence of the detected compounds. Use of an odour index helped identify possible contributors to the odour of wool, but unqualified proof remains elusive because of the possibility that compounds present at concentrations below detection limits may have made a contribution. A major aim of this work was to improve the odour of scoured wool. To achieve this aim two antioxidants were separately incorporated into the wool scouring process. In both cases, this resulted in a reduction of the number of headspace volatile compounds detected, and a distinct improvement in the pleasantness of the odour with an accompanying reduction in the odour intensity.

A.M Lisovac; D Shooter

2003-01-01T23:59:59.000Z

159

Macro determinants of volatility and volatility spillover in energy markets  

Science Journals Connector (OSTI)

Abstract We analyze the time-varying volatility and spillover effects in crude oil, heating oil, and natural gas futures markets by incorporating changes in important macroeconomic variables and major political and weather-related events into the conditional variance equations. We allow asymmetric responses to random disturbances in each market as well as to good and bad economic news related to the overall economy. Results show the presence of asymmetric effects in both random disturbances and macroeconomic variables. A bidirectional volatility spillover effect is found between natural gas and crude oil and between the natural gas and heating oil markets. Crude oil volatility is found to increase following major political, financial, and natural events. Seasonality and day-of-the-week effects are found in the crude oil and heating oil markets.

Berna Karali; Octavio A. Ramirez

2014-01-01T23:59:59.000Z

160

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 "vocs 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

On-line Analysis of Organic Compounds in Diesel Exhaust Using a Proton Transfer Reaction Mass Spectrometer (PTR-MS)  

SciTech Connect

Chemical ionization mass spectrometry using H3O+ proton transfer in an ion drift tube (PTR-MS) was used to measure volatile organic compound (VOC) concentrations on-line in diesel engine exhaust as a function on engine load. The purpose of the study was to evaluate the PTR-MS instrument as an analytical tool for diesel engine emissions abatement research. Measured sensitivities determined from gas standards were found to be between 30% and 100% greater than calculated sensitivities. A slight humidity dependent sensitivity was observed for non-polar species, implying that reactions with H+(H2O)2 were important for some organics. The mass spectra of diesel exhaust were complex but displayed a pattern of strong ion signals at 14n+1 (n=3..8) masses, with a relative ion abundance similar to that obtained from electron impact ionization of alkanes. Laboratory experiments verified that C8-C16 n-alkanes and C8-C13 1-alkenes react with H3O+ in dissociative proton transfer reaction resulting in alkyl cation ion products, primarily m/z 41, 43, 57, 71 and 85. Monitoring the sum of these ions signals may be useful for estimating alkane emissions from unburnt diesel fuel. Alkane fragmentation likely simplified the diesel exhaust mass spectrum and reduced potential mass interferences with isobaric aromatic compounds. It is shown that the relative abundances of VOCs changed as a function of engine load. Concentrations of aldehydes and ketones dominated those of aromatic species with formaldehyde and acetaldehyde estimated to be the most abundant VOCs in the PTR-MS mass spectrum at all engine loads. The relative abundances of benzene and toluene increased with engine load indicating their pyrogenic origin. The relative abundance of alkanes, aromatics, aldehydes, and alcohols was broadly consistent with literature publications of diesel exhaust analysis by gas chromatography. About 75% of the organic ion signal could be assigned. On line analysis of diesel exhaust using this technology may be valuable tool for diesel engine emission research.

Jobson, B Tom T.; Alexander, M. Lizabeth; Maupin, Gary D.; Muntean, George G.

2005-08-01T23:59:59.000Z

162

Characterizing the formation of secondary organic aerosols  

SciTech Connect

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

163

AEROBIC BIOTRANSFORMATION OF TOXIC ORGANICS IN WASTEWATER  

E-Print Network (OSTI)

#12;AEROBIC BIOTRANSFORMATION OF TOXIC ORGANICS IN WASTEWATER DOE FRAP 1997-15 Prepared for in both domestic and industrial wastewater. The release of these compounds during wastewater treatment to predict the mass of the VOCs in the wastewater treated by biotransformation and the mass stripped

164

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

165

Volatile compounds from marine algae  

Science Journals Connector (OSTI)

Volatile compounds from marine algae ... Seasonal Variations of Bromophenols in Brown Algae (Padina arborescens, Sargassum siliquastrum, and Lobophora variegata) Collected in Hong Kong ... Seasonal Variations of Bromophenols in Brown Algae (Padina arborescens, Sargassum siliquastrum, and Lobophora variegata) Collected in Hong Kong ...

Richard E. Moore

1977-02-01T23:59:59.000Z

166

5, 463499, 2008 Oxygenated volatiles  

E-Print Network (OSTI)

of flooding on the exchange of the volatile C2-compounds ethanol, acetaldehyde and acetic acid between leaves Discussion EGU Abstract The effect of root inundation on the leaf emissions of ethanol, acetaldehyde in stomatal conduc-10 tance. Flooding of the roots resulted in leaf emissions of ethanol and acetaldehyde

Boyer, Edmond

167

Effects of Environmental Conditions on the Sorption of VOCs on Building Materials-Part II: Model Evaluation (RP-1097)  

E-Print Network (OSTI)

1 Effects of Environmental Conditions on the Sorption of VOCs on Building Materials-Part II: Model, Ph.D. Member ASHRAE 1 ABSTRACT: Sorption data obtained by using small environmental chambers under to evaluate the linear Langmuir model and the diffusion model for VOC sorption by different building materials

Chen, Qingyan "Yan"

168

Photoconductive Decay Lifetime and Suns-Voc Diagnostics of Efficient Heterojunction Solar Cells: Preprint  

SciTech Connect

We report results of minority carrier lifetime measurements for double-sided p-type Si heterojunction devices and compare Suns-Voc results to Light I-V measurements on 1 cm2 solar cell devices measured on an AM1.5 calibrated XT-10 solar simulator.

Page, M. R.; Iwaniczko, E.; Xu, Y.; Roybal L.; Bauer, R.; Yan, H.-C.; Wang, Q.; Meier, D. L.

2008-05-01T23:59:59.000Z

169

Carbide-Derived Carbons for Adsorptive Removal of VOCs from Air Streams  

E-Print Network (OSTI)

Carbide-Derived Carbons for Adsorptive Removal of VOCs from Air Streams References 1. USEPA Literature Results Carbide-Derived Carbons Motivation Future Research · The effect of pore size and pore size decreasing removal cost is an advancement for the industry and the environment. Carbide-derived carbons (CDCs

Das, Suman

170

Determination of VOC emissions from French wood products Christophe YRIEIX *, Franois MAUPETIT **, Olivier RAMALHO **  

E-Print Network (OSTI)

building products. Introduction Today, it is well known that building products may influence indoor air1/10 Determination of VOC emissions from French wood products Christophe YRIEIX *, François air quality (IAQ), it appears necessary to have analytical protocol for the measurement and health

Paris-Sud XI, Université de

171

Energy Recovery Efficiency and Cost Analysis of VOC Thermal Oxidation Pollution Control Technology  

Science Journals Connector (OSTI)

Respective cost models were derived for recuperative thermal oxidizer (TO) and regenerative thermal oxidizer (RTO). ... In a thermal oxidation process, VOC-laden air is thermally treated (oxidized/decomposed) at temperatures about 730?850 °C. ... Choi and Yi(4) worked on the simulation and optimization of regenerative thermal oxidizers. ...

Aruna S. K. Warahena; Yew Khoy Chuah

2009-06-24T23:59:59.000Z

172

Adsorption of VOCs from the Gas Phase to Different Minerals and a Mineral Mixture  

Science Journals Connector (OSTI)

Adsorption of VOCs from the Gas Phase to Different Minerals and a Mineral Mixture ... Here adsorption to three well-defined minerals (hematite, corundum, and lime) was studied by a chromatographic method. ... (39)?Suzuki, S.; Green, P. G.; Bumgarner, R. E.; Dasgupta, S.; Goddard, W. A.; Blake, G. A. Science 1992, 257, 942?945. ...

Kai-Uwe Goss; Steven J. Eisenreich

1996-06-26T23:59:59.000Z

173

Energy efficient indoor VOC air cleaning with activated carbon fiber (ACF) filters Meera A. Sidheswaran a  

E-Print Network (OSTI)

carbon fiber (ACF) filters for air cleaning in HVAC systems. The parallel aims for the air cleaningEnergy efficient indoor VOC air cleaning with activated carbon fiber (ACF) filters Meera A. Velocities through the ACF media were typical of those in normal particle filter systems (w0.5 m sĂ?1

174

Mapping isoprene emissions over North America using formaldehyde column observations from space  

E-Print Network (OSTI)

Mapping isoprene emissions over North America using formaldehyde column observations from space. [1] We present a methodology for deriving emissions of volatile organic compounds (VOC) using space to local VOC emissions, with a spatial smearing that increases with the VOC lifetime. Isoprene

Chance, Kelly

175

Volatility clustering in land markets  

E-Print Network (OSTI)

analysis. Applying a Lagrange Multiplier (LM) test for AutoRegressive Conditional Heteroskedasticity (ARCH) effects in the Canadian land markets, we find that clustering in land price returns exists in Alberta, Ontario, Quebec, and British Columbia... by even higher volatility and vice versa. III. Data and Descriptive Statistics The monthly land price index for each individual province is obtained from Statistics Canada, covering all of the Canadian provinces (Alberta, Ontario, Quebec...

Bao, Helen X. H.; Huang, Hui; Huang, Yu-Lieh; Lin, Pin-te

2014-01-01T23:59:59.000Z

176

No evidence for acid-catalyzed secondary organic aerosol formation in power plant plumes over metropolitan Atlanta, Georgia - article no. L06801  

SciTech Connect

Aircraft-based measurements of the water-soluble fraction of fine PM organic carbon (WSOC) and inorganic salt composition in the Atlanta, GA region were conducted in the summer of 2004. Five notable plumes of SO{sub 2}, apparently from coal-fired power plants, were intercepted, and had NH{sub 4}{sup +}/SO4{sup 2-} molar ratios ranging from approximately 0.8 to 1.4 compared to molar ratios near 2 outside of the plumes. Sulfate aerosol concentrations increased from a regional background of 5 - 8 {mu} g m{sup -3} to as high as 19.5 {mu} g m{sup -3} within these plumes. No increase in WSOC concentrations was observed in plumes compared to out-of-plumes within a WSOC measurement uncertainty of 8%. These measurements suggest that secondary organic aerosol formation via heterogeneous acid-catalyzed reactions within power plant plumes are not likely a significant contributor to the ambient aerosol mass loading in Atlanta and the surrounding region. Because this region is rich in both biogenic and anthropogenic volatile organic carbon (VOC), the results may be widely applicable.

Peltier, R.E.; Sullivan, A.P.; Weber, R.J.; Wollny, A.G.; Holloway, J.S.; Brock, C.A.; de Gouw, J.A.; Atlas, E.L. [Georgia Institute for Technology, Atlanta, GA (United States). School for Earth and Atmospheric Science

2007-03-15T23:59:59.000Z

177

Preparation of Samples of Plant Material for Chromatographic Analysis  

Science Journals Connector (OSTI)

......impurities, the pesticide fraction was precleaned in a...in order to isolate airborne-originating volatile...VOCs Living vegetation releases a large number of VOCs...burned in Catalan forest fires. Comparison with the...indicator of exposure to airborne volatile organic compounds......

B. Zygmunt; J. Namiesnik

2003-03-01T23:59:59.000Z

178

Application of solar photocatalytic oxidation to VOC-containing airstreams  

SciTech Connect

Researchers from the National Renewable Energy Laboratory (NREL) recently conducted two pilot-scale field tests located at McClellan Air Force Base (AFB) in Sacramento, California and at the Fort Carson US Army Installation in Colorado Springs, Colorado. The objective of the tests was to determine the effectiveness of solar-powered photocatalytic oxidation (PCO) treatment units for destroying emissions of chlorinated organic compounds (trichloroethylene and dichloroethylenes) from an air stripper at ambient temperature and destroying paint solvent emissions (toluene and MEK) from a painting facility at higher temperatures. Their goals for field testing these solar-driven systems was to gather real-world treatability data and establish that the systems maintained performance during the duration of the testing. This paper reports the results of these field tests.

Magrini, K.A.; Watt, A.S.; Boyd, L.C.; Wolfrum, E.J.; Larson, S.A.; Roth, C.; Glatzmaier, G.C.

1999-07-01T23:59:59.000Z

179

Development and Characterization of a Thermodenuder for Aerosol Volatility Measurements  

SciTech Connect

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

180

Silicon Nanowires for Non-Volatile Memory  

E-Print Network (OSTI)

Silicon Nanowires for Non-Volatile Memory P R O J E C T L E A D E R : Curt A. Richter (NIST) C O L approaches for silicon nanowire non-volatile memory. K E Y A C C O M P L I S H M E N T S Fabricated novel non-volatile memory cells with silicon nanowire channels and Al2 O3 /HfO2 /SiO2 gate dielectric storage stacks

Note: This page contains sample records for the topic "vocs 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

Elastic Prices and Volatile Energy Generation.  

E-Print Network (OSTI)

?? New possibilities are developing in the infrastructure of electrical systems to meet the new demand of more volatile power generation. This study focuses on… (more)

Dalén, Anders

2010-01-01T23:59:59.000Z

182

Treatability test of a stacked-tray air stripper for VOC in water  

SciTech Connect

A common strategy for hydraulic containment and mass removal at VOC contaminated sites is `pump and treat (P&T)`. In P&T operations, contaminated ground water is pumped from wells, treated above ground, and discharged. Many P&T remediation systems at VOC sites rely on air stripping technology because VOCs are easily transferred to the vapor phase. In stacked-tray air strippers, contaminated water is aerated while it flows down through a series of trays. System operations at LLNL are strictly regulated by the California and federal Environmental Protection Agencies (Cal/EPA and EPA), the Bay Area Air Quality Management District (BAAQMD), the California Regional Water Quality Control Board (RWQCB) and the Department of Toxic Substances Control (DTSC). These agencies set discharge limits, require performance monitoring, and assess penalties for non-compliance. National laboratories are also subject to scrutiny by the public and other government agencies. This extensive oversight makes it necessary to accurately predict field treatment performance at new extraction locations to ensure compliance with all requirements prior to facility activation. This paper presents treatability test results for a stacked- tray air stripper conducted at LLNL and compares them to the vendor`s modeling software results.

Pico, T., LLNL

1998-04-01T23:59:59.000Z

183

ENHANCEMENTS OF NONPOINT-SOURCE MONITORING PROGRAMS TO ASSESS VOLATILE  

E-Print Network (OSTI)

WATER OF THE UNITED STATES Wayne W. Lapham, Michael J. Moran, and John S. Zogorski ABSTRACT The U compounds (VOCs) in ground water of the United States. The data are from Federal, State, and local nonpoint for VOC occurrence and nonoccurrence in ground water of the United States. INTRODUCTION Background In 1991

184

Jumps and stochastic volatility in crude oil futures prices using conditional moments of integrated volatility  

Science Journals Connector (OSTI)

Abstract We evaluate alternative models of the volatility of commodity futures prices based on high-frequency intraday data from the crude oil futures markets for the October 2001–December 2012 period. These models are implemented with a simple GMM estimator that matches sample moments of the realized volatility to the corresponding population moments of the integrated volatility. Models incorporating both stochastic volatility and jumps in the returns series are compared on the basis of the overall fit of the data over the full sample period and subsamples. We also find that jumps in the returns series add to the accuracy of volatility forecasts.

Christopher F. Baum; Paola Zerilli

2014-01-01T23:59:59.000Z

185

Current status of fluoride volatility method development  

SciTech Connect

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

186

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

187

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

188

UV-Câ??Irradiated Arabidopsis and Tobacco Emit Volatiles That Trigger Genomic Instability in Neighboring Plants  

Science Journals Connector (OSTI)

...impaired in both the production and the perception...is primed by the production of the mobile metabolite...through volatile organic compounds has been...depend on how many cell division cycles have...ankyrin repeats. Cell 88 : 57-63. Caputo...L. (2006). Solar ultraviolet-B radiation...

Youli Yao; Cristian H. Danna; Franz J. Zemp; Viktor Titov; Ozan Nazim Ciftci; Roman Przybylski; Frederick M. Ausubel; Igor Kovalchuk

2011-10-25T23:59:59.000Z

189

Separation and Identification of Volatile Compounds from Liquid Cultures of Trichoderma harzianum by GC-MS using Three Different Capillary Columns  

Science Journals Connector (OSTI)

......functions in the organism that are of remarkable importance to humankind in medical, industrial or agricultural applications. Some...activities. Volatile compounds are appear as intermediate and end products of diverse metabolic pathways and belong to various......

Shafiquzzaman Siddiquee; Bo Eng Cheong; Khanam Taslima; Hossain Kausar; Md Mainul Hasan

2012-04-01T23:59:59.000Z

190

The Role of Volatiles in Coal Combustion  

Science Journals Connector (OSTI)

Our knowledge of the role of volatiles in coal combustion ranges at this time from the self-evident to the ambiguous. The clearest point on which all agree is that pyrolysis will occur during the total coal co...

Robert H. Essenhigh; Eric M. Suuberg

1987-01-01T23:59:59.000Z

191

The Perkin-Elmer ATD-400 system for monitoring of ambient VOC ozone precursors  

SciTech Connect

The systems described were used in the Texas Natural Resource Conservation Commission (TNRCC) Coastal Oxidant Assessment for Southeast Texas (COAST) program. Continuous VOC monitoring programs were implemented in June through November of this year in Houston. This Perkin-Elmer developed monitoring system included a dual capillary column chromatographic application in an 8700 GC with a modified ATD-400 sampling system. The resulting separations are monitored and quantified using Turbochrom (ver. 3.2) chromatographic data handling software. The key element to this system is the thermal desorption device which is capable of concentrating VOCs from ambient air then desorbing them directly to the gas chromatograph on a continuous cycle.The ATD-400, unlike other similar devices, contains an activated carbon trap which is electrically cooled during collection via Peltier technology. This eliminates the need for cryogenic liquids or compressed air (vortex) for sample collection and makes unattended field operation more feasible than previous systems. The entire system is integrated to provide a completely automatic sample collection cycle, gas chromatographic analysis and data collection, reduction and report generation. Reliability and repeatability data suggest that the system is robust. Good correlation between systems and quality audits confirms data from the manufacturer. Modifications which are being implemented to the chromatographic system, system sites, and operator behavior to enhance the system performance will also be presented.

Radenheimer, P. [Consolidated Sciences Corp., Pasadena, TX (United States); Gibich, J. [Texas Natural Resource Conservation Commission, Austin, TX (United States); Ogle, L. [Radian Corp., Austin, TX (United States)

1994-12-31T23:59:59.000Z

192

Size-Dependent Mixing Characteristics of Volatile and Nonvolatile Components in Diesel Exhaust Aerosols  

Science Journals Connector (OSTI)

Size-Dependent Mixing Characteristics of Volatile and Nonvolatile Components in Diesel Exhaust Aerosols ... Diesel exhaust particles that were size-selected in the first DMA were passed through the heater, and the change in particle size due to loss of volatile components was determined by the second DMA. ... Diesel exhaust particles are attracting significant attention with regards to their potential health effects (7?9) since they can be formed in high concentrations as ultrafine particles and can contain high levels of organic compounds and soot. ...

Hiromu Sakurai; Kihong Park; Peter H. McMurry; Darrick D. Zarling; David B. Kittelson; Paul J. Ziemann

2003-10-29T23:59:59.000Z

193

NETL: Ambient Monitoring - Contribution of Semi-volatile Organic Material  

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

Airborne Particulate Threat Assessment (APTA) Project Airborne Particulate Threat Assessment (APTA) Project In a collaborative effort between ChemImage Biothreat, LLC and the National Energy Technology Laboratory (NETL), the Airborne Particulate Threat Assessment (APTA) Project will acquire the ability to discern between chemical/biological threat agents and ambient background particulate matter (PM) encountered in the environment. The project will focus on potential background interferences, specifically from the ambient backgrounds collected at NETL-supported ambient air collection facilities. Potential substrate interferences such as pollen, insecticides and industrial PM will be addressed. Using Raman Chemical Imaging (RCI) and fluorescence chemical imaging, a background - void of pathogen spores - will be collected and compared to known pathogens. Interactions causing possible false positives will be identified and studied. This study would systematically identify potential problems and provide a baseline of ambient particulates found in the mid-eastern United States .

194

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

195

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

196

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

197

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

NLE Websites -- All DOE Office Websites (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...

198

Fungal production of volatiles during growth on fiberglass.  

Science Journals Connector (OSTI)

...to 25 C. Colonized fiberglass insulations (10 to * Corresponding author...and from colonized fiberglass insulation materialsa VOCs produced on...associated with urea-formaldehyde foam insulation in Canada. Mycopathologia 99...

I M Ezeonu; D L Price; R B Simmons; S A Crow; D G Ahearn

1994-11-01T23:59:59.000Z

199

The effect of impurities on the doping and VOC of CdTe/CdS thin film solar cells  

Science Journals Connector (OSTI)

The effect of introducing impurities in CdTe, namely antimony (Sb) and oxygen (O), on the net carrier concentration in CdS/CdTe solar cells and on their open-circuit voltage (VOC) has been investigated. Oxygen was introduced in the CdTe films during the deposition of this layer by the close-spaced sublimation process. The total pressure was held constant at 1330 Pa (N2 and O2). The amount of oxygen was varied by varying its partial pressure. Antimony was introduced into CdTe using a post-deposition diffusion process. Following the deposition of CdTe a thin film (a few nm) of Sb was deposited onto the CdTe surface and subsequently heat-treated to cause in-diffusion of Sb. The temperature and time during the diffusion process were varied in the range of 300–525 °C and 20–160 min respectively. In both instances it was possible to vary (increase) the doping concentration in CdTe. The increase in doping was accompanied by an increase in VOC. However, in all instances the doping in CdTe reached a maximum value, beyond which further increases were not possible leading to saturation in VOC. The highest VOC measured was similar to state-of-the-art values in the range of 800–830 mV, and the highest doping concentration measured was in the 1016 cm? 3 range.

H. Zhao; Alvi Farah; D. Morel; C.S. Ferekides

2009-01-01T23:59:59.000Z

200

Flexible CHP System with Low NOx, CO, and VOC Emissions- Presentation by the Gas Technology Institute (GTI), June 2011  

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

Presentation on Flexible CHP System with Low NOx, CO, and VOC Emissions, given by David Cygan of the Gas Technology Institute, at the U.S. DOE Industrial Distributed Energy Portfolio Review Meeting in Washington, D.C. on June 1-2, 2011.

Note: This page contains sample records for the topic "vocs 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

Modelling oil price volatility with structural breaks  

Science Journals Connector (OSTI)

In this paper, we provide two main innovations: (i) we analyze oil prices of two prominent markets namely West Texas Intermediate (WTI) and Brent using the two recently developed tests by Narayan and Popp (2010) and Liu and Narayan, 2010 both of which allow for two structural breaks in the data series; and (ii) the latter method is modified to include both symmetric and asymmetric volatility models. We identify two structural breaks that occur in 1990 and 2008 which coincidentally correspond to the Iraqi/Kuwait conflict and the global financial crisis, respectively. We find evidence of persistence and leverage effects in the oil price volatility. While further extensions can be pursued, the consideration of asymmetric effects as well as structural breaks should not be jettisoned when modelling oil price volatility.

Afees A. Salisu; Ismail O. Fasanya

2013-01-01T23:59:59.000Z

202

Volatile Species Retention During Metallic Fuel Casting  

SciTech Connect

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

203

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

204

Green Solvents for Polymerization of Methyl Methacrylate to Poly(Methyl Methacrylate)  

Science Journals Connector (OSTI)

Solvents are often volatile organic compounds (VOCs) ... decade, chemistry research into the use of greener, alternative solvents has been grown enormously. Alternative solvents suitable for green chemistry are t...

S. Krishna Mohan

2012-01-01T23:59:59.000Z

205

Climate change, ambient ozone, and health in 50 US cities Michelle L. Bell & Richard Goldberg & Christian Hogrefe &  

E-Print Network (OSTI)

Climate change, ambient ozone, and health in 50 US cities Michelle L. Bell & Richard Goldberg Haven, CT 06511, USA e-mail: michelle.bell@yale.edu R. Goldberg Center for Climate Systems Research emissions of volatile organic compounds (VOCs),

206

Atmos. Chem. Phys., 14, 1097710988, 2014 www.atmos-chem-phys.net/14/10977/2014/  

E-Print Network (OSTI)

side. In addition, there are also about 1000 coal bed methane wells and conventional wells located in emissions of greenhouse gases (mostly methane), volatile organic compounds (VOCs) and nitrogen oxides (NOx

Pierce, Jeffrey

207

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

208

Vapor intrusion modeling : limitations, improvements, and value of information analyses  

E-Print Network (OSTI)

Vapor intrusion is the migration of volatile organic compounds (VOCs) from a subsurface source into the indoor air of an overlying building. Vapor intrusion models, including the Johnson and Ettinger (J&E) model, can be ...

Friscia, Jessica M. (Jessica Marie)

2014-01-01T23:59:59.000Z

209

Laboratory simulation of subsurface airflow beneath a building  

E-Print Network (OSTI)

Vapor intrusion is the vapor-phase migration of volatile organic compounds (VOCs) into buildings due to subsurface soil or groundwater contamination. Oxygen replenishment rates beneath a building are significant for ...

Corsello, Joseph William

2014-01-01T23:59:59.000Z

210

Power Generating Inc | Open Energy Information  

Open Energy Info (EERE)

while consuming on-site emissions of volatile organic compounds (VOC's). References: Power Generating Inc1 This article is a stub. You can help OpenEI by expanding it. Power...

211

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 ...

Yang, Xiaorong

2008-01-01T23:59:59.000Z

212

Sequential #optimal consumption and investment for stochastic volatility markets  

E-Print Network (OSTI)

Sequential #­optimal consumption and investment for stochastic volatility markets with unknown investment and consumption problem for a Black­Scholes financial market with stochastic volatility sequential estimation. We show that the consumption and investment strategy calculated through

213

Volatility Relationship between Crude Oil and Petroleum Products  

Science Journals Connector (OSTI)

This paper utilizes calculated historical volatility and GARCH models to compare the historical price volatility behavior of crude oil, motor gasoline and heating oil in U.S. markets since 1990. ... GARCH/TARCH m...

Thomas K. Lee; John Zyren

2007-03-01T23:59:59.000Z

214

X-ray elemental online analyzer measures volatiles  

SciTech Connect

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

215

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

216

Volatilization characteristics of solid recovered fuels (SRFs)  

Science Journals Connector (OSTI)

Abstract The volatilization characteristics of three MSW-derived materials (FO, RT and FL) produced by local waste-management companies were investigated as potential solid recovered fuels (SRFs). FL was prepared from sorted domestic waste and consisted of non-recyclable plastics, refuse paper and biomass. RT and FO were obtained through active hygienization of unsorted MSW and refuse materials from selective waste-collection streams. RT was rich in plastics and had low biomass, whereas FO was mainly biomass and refuse paper. The rate of energy release during volatilization depended on the content of biomass and plastic, especially at a low conversion. Major contaminants had different rates of volatilization. Nitrogen and sulfur tended to accumulate in the charred solid, and were released as SO2 and nitrous oxides during both the volatilization–combustion stage and the char burning stage. Chlorine release was faster for the fuels rich in plastic waste. According to their ash melting characteristics and slagging indexes (Fs: 1188 °C for FO, 1192 °C for RT and 1234 °C for FL) the three fuels were equivalent to commercial SRFs. The three fuels showed potential as standardized SRF, although it would be desirable to reduce their chlorine content and, in the case of FO, to increase it’s heating value.

Daniel Montané; Sňnia Abelló; Xavier Farriol; César Berrueco

2013-01-01T23:59:59.000Z

217

Understanding Price Volatility in Electricity Markets  

Science Journals Connector (OSTI)

This paper illustrates notions of volatility associated with power systems spot prices for electricity. The paper demonstrates a frequency-domain method useful to separate out periodic price variations from random variations. It then uses actual observed ... Keywords: electricity spot pricing, risk management

Fernando L. Alvarado; Rajesh Rajaraman

2000-01-01T23:59:59.000Z

218

Bioorganic nanodots for non-volatile memory devices  

SciTech Connect

In recent years we are witnessing an intensive integration of bio-organic nanomaterials in electronic devices. Here we show that the diphenylalanine bio-molecule can self-assemble into tiny peptide nanodots (PNDs) of ?2 nm size, and can be embedded into metal-oxide-semiconductor devices as charge storage nanounits in non-volatile memory. For that purpose, we first directly observe the crystallinity of a single PND by electron microscopy. We use these nanocrystalline PNDs units for the formation of a dense monolayer on SiO{sub 2} surface, and study the electron/hole trapping mechanisms and charge retention ability of the monolayer, followed by fabrication of PND-based memory cell device.

Amdursky, Nadav; Shalev, Gil; Handelman, Amir; Natan, Amir; Rosenwaks, Yossi [School of Electrical Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 69978 (Israel); Litsyn, Simon; Szwarcman, Daniel; Rosenman, Gil, E-mail: rgil@post.tau.ac.il [School of Electrical Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 69978 (Israel); StoreDot LTD, 16 Menahem Begin St., Ramat Gan (Israel); Roizin, Yakov [School of Electrical Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 69978 (Israel); TowerJazz, P.O. Box 619, Migdal HaEmek 23105 (Israel)

2013-12-01T23:59:59.000Z

219

Proboscis extension reflex platform for volatiles and semi-volatiles detection  

SciTech Connect

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

220

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

Note: This page contains sample records for the topic "vocs 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

Modeling Terrestrial Biogenic Sources of Oxygenated Organic Emissions  

Science Journals Connector (OSTI)

In recent years, oxygenated volatile organic chemicals (OVOCs) likeacetone have been recognized as important atmospheric constituents due to their ability to sequester reactive nitrogen in the form peroxyacetyl nitrate (PAN) and to be a source ...

Christopher Potter; Steven Klooster; David Bubenheim; Hanwant B. Singh; Ranga Myneni

2003-07-01T23:59:59.000Z

222

Oxidation and volatilization of a niobium alloy  

SciTech Connect

This report presents the findings from a preliminary investigation into oxidation and volatilization characteristics of a niobium alloy. Niobium is a candidate alloy for use in plasma facing components (PFCS) in experimental fusion reactors like the Intemational Thermonuclear Experimental Reactor (ITER). An experimental alloy was tailored to simulate small changes in chemistry which could result from transmutations from irradiation. The alloy was exposed in air and steam between 800[degree]C and 1200[degree]C. Volatilized products and hydrogen were collected and measured. Post-test examinations were also performed on the samples to determine the amount of material loss during the exposures. The obtained measurements of volatilization flux (g/m[sup 2]-s), hydrogen generation rates (liters/m[sup 2]-s), and recession rates (mm/s) are data which can be used for safety analyses and material performance to predict consequences which may result from an accident involving the ingress of air or steam into the plasma chamber of fusion reactor. In our volatility tests, only molybdenum and niobium were found at release levels above the detection limit. Although molybdenum is present at only 0.12 wt%, the quantities of this element volatilized in air are nearly comparable to the quantities of niobium released. The niobium release in steam is only three to four times higher than that of molybdenum in steam. The hydrogen production of the niobium alloy is compared with other PFC materials that we have tested, specifically, beryllium, graphite, and a tunesten alloy. At high temperatures, the hydrogen production rate of the niobium alloy is among the lowest of these materials, significantly lower than beryllium. To understand what this means in an accident situation, modeling is necessary to predict temperatures, and therefore total hydrogen production. The INEL is currently doing this modeling.

Smolik, G.R.; McCarthy, K.A.

1992-07-01T23:59:59.000Z

223

Relationship between energetic disorder and open-circuit voltage in bulk heterojunction organic solar cells  

Science Journals Connector (OSTI)

We simulate organic bulk heterojunction solar cells. The effects of energetic disorder are incorporated through a Gaussian or exponential model of density of states. Analytical models of open-circuit voltage (VOC) are derived from the splitting of quasi-Fermi potentials. Their predictions are backed up by more complex numerical device simulations including effects such as carrier-density–dependent charge-carrier mobilities. It is predicted that the VOC depends on: (1) the donor-acceptor energy gap; (2) charge-carrier recombination rates; (3) illumination intensity; (4) the contact work functions (if not in the pinning regime); and (5) the amount of energetic disorder. A large degree of energetic disorder, or a high density of traps, is found to cause significant reductions in VOC. This can explain why VOC is often less than expected in real devices. Energetic disorder also explains the nonideal temperature and intensity dependence of VOC and the superbimolecular recombination rates observed in many real bulk heterojunction solar cells.

James C. Blakesley and Dieter Neher

2011-08-12T23:59:59.000Z

224

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

225

A Case for Safer Building Materials: Lifecycle Concerns, Data Gaps, and  

E-Print Network (OSTI)

; microenvironments · Heating and ventilation · Dampness and humidity · Chemicals in building materials · VOCs have;Volatile organic compounds (VOCs) · Aliphatic hydrocarbons, aromatic hydrocarbons, halogenated hydrocarbons and associated supplies · Adhesives · Building materials · Furnishings and clothing · Combustion appliances

Lee, Seung-Wuk

226

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

227

Volatility forecasting with smooth transition exponential smoothing  

Science Journals Connector (OSTI)

Adaptive exponential smoothing methods allow smoothing parameters to change over time, in order to adapt to changes in the characteristics of the time series. This paper presents a new adaptive method for predicting the volatility in financial returns. It enables the smoothing parameter to vary as a logistic function of user-specified variables. The approach is analogous to that used to model time-varying parameters in smooth transition generalised autoregressive conditional heteroskedastic (GARCH) models. These non-linear models allow the dynamics of the conditional variance model to be influenced by the sign and size of past shocks. These factors can also be used as transition variables in the new smooth transition exponential smoothing (STES) approach. Parameters are estimated for the method by minimising the sum of squared deviations between realised and forecast volatility. Using stock index data, the new method gave encouraging results when compared to fixed parameter exponential smoothing and a variety of GARCH models.

James W. Taylor

2004-01-01T23:59:59.000Z

228

Pressure maintenance in a volatile oil reservoir  

E-Print Network (OSTI)

reservoir. Historically, produced and makeup gas was injected to maintain pressure. In today's economy. gas has an increasing market value compared to the price of oil. Therefore, it becomes increasingly difficult to justify economically the injection... of produced gas and the purchase of additional make up gas to maintain reservoir pressure. Accordingly, water injection to maintain pressure becomes more favorable economically. This research investigated water injection into a volatile oil reservoir...

Schuster, Bruce Alan

2012-06-07T23:59:59.000Z

229

Global Emissions of Terpenoid VOCs from Terrestrial Vegetation in the Last Millennium  

SciTech Connect

We investigated the millennial variability of global BVOC emissions by using two independent numerical models: The Model of Emissions of Gases and Aerosols from Nature (MEGAN), for isoprene, monoterpene and sesquiterpene and Lund-Potsdam-Jena General Ecosystem Simulator (LPJ8 GUESS), for isoprene and monoterpenes. We found the millennial trends of global isoprene emissions to be mostly affected by land cover and atmospheric carbon dioxide changes, whereas monoterpene and sesquiterpene emission were dominated by temperature change. Isoprene emissions declined substantially in regions with large and rapid land cover change. In addition, isoprene emission sensitivity to drought proved to have signicant short term global effects. By the end of the past millennium MEGAN isoprene emissions were 634 TgC yr-1 (13% and 19% less than during during 1750-1850 and 1000- 15 1200, respectively) and LPJ-GUESS emissions were 323 TgC yr-1 (15% and 20% less than during 1750-1850 and 1000-1200, respectively). Monoterpene emissions were 89 TgC yr-1 (10% and 6% higher than during 1750-1850 and 1000-1200, respectively) in MEGAN, and 24 TgC yr-1 (2% higher and 5% 19 20 less than during 1750-1850 and 1000-1200, respectively) in LPJ-GUESS. MEGAN sesquiterpene emissions were 36 TgC yr-1 (10% and 4% higher than during1750-1850 and 1000-1200, respectively). Although both models capture similar We investigated the millennial variability of global BVOC emissions by using two independent numerical models: The Model of Emissions of Gases and Aerosols from Nature (MEGAN), for isoprene, monoterpene and sesquiterpene and Lund-Potsdam-Jena General Ecosystem Simulator (LPJ8GUESS), for isoprene and monoterpenes. We found the millennial trends ofglobal isoprene emissions to be mostly a*ected by land cover and atmospheric carbon dioxide changes, whereas monoterpene and sesquiterpene emission were dominated by temperature change. Isoprene emissions declined substantially in regions with large and rapid land cover change. In addition, isoprene emission sensitivity to drought proved to have signifcant short term global effects. By the end of the past millennium MEGAN isoprene emissions were 634 TgC yr-1 (13% and 19% less than during during 1750-1850 and 1000- 1200, respectively) and LPJ-GUESS emissions were 323 TgC yr-1 (15% and 16 17 20% less than during 1750-1850 and 1000-1200, respectively). Monoterpene emissions were 89 TgC yr-1 (10% and 6% higher than during 1750-1850 and 18 1000-1200, respectively) in MEGAN, and 24 TgC yr-1 (2% higher and 5% less than during 1750-1850 and 1000-1200, respectively) in LPJ-GUESS. MEGAN sesquiterpene emissions were 36 TgC yr-1 (10% and 4% higher than during1750-1850 and 1000-1200, respectively). Although both models capture similar emission trends, the magnitude of the emissions are different. This highlights the importance of building better constraints on VOC emissions from terrestrial vegetation.emission trends, the magnitude of the emissions are different. This highlights the importance of building better constraints on VOC emissions from terrestrial vegetation.

Acosta Navarro, J. C.; Smolander, S.; Struthers, H.; Zorita, E.; Ekman, A. M.; Kaplan, J. O.; Guenther, Alex B.; Arneth, A.; Riipinen, I.

2014-06-16T23:59:59.000Z

230

GADOLINIUM SOLUBILITY AND VOLATILITY DURING DWPF PROCESSING  

SciTech Connect

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

231

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

232

Price and volatility relationships in the Australian electricity market.  

E-Print Network (OSTI)

??This thesis presents a collection of papers that has been published, accepted or submitted for publication. They assess price, volatility and market relationships in the… (more)

Higgs, Helen

2006-01-01T23:59:59.000Z

233

Intermediate-Volatility Organic Compounds: A Large Source of Secondary Organic Aerosol  

Science Journals Connector (OSTI)

Schauer, J. J.; Kleeman, M. J.; Cass, G. R.; Simoneit, B. R. T.Measurement of emissions from air pollution sources. ... Measurement of Emissions from Air Pollution Sources. ... Schauer, J. J.; Kleeman, M. J.; Cass, G. R.; Simoneit, B. R. T.Measurement of emissions from air pollution sources. ...

Yunliang Zhao; Christopher J. Hennigan; Andrew A. May; Daniel S. Tkacik; Joost A. de Gouw; Jessica B. Gilman; William C. Kuster; Agnes Borbon; Allen L. Robinson

2014-11-06T23:59:59.000Z

234

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

235

300-Area VOC Program Slug Test Characterization Results for Selected Test/Depth Intervals Conducted During the Drilling of Well 399-3-21  

SciTech Connect

This report presents brief test descriptions and analysis results for multiple, stress-level slug tests that were performed at selected test/depth intervals within well 399-3-21 as part of the 300-Area volatile organic compound characterization program. The test intervals were characterized as the borehole was advanced to its final drill depth (45.7 m) and before its completion as a monitor-well facility. The primary objective of the slug tests was to provide information pertaining to the vertical distribution of hydraulic conductivity with depth at this location and to select the final screen-depth interval for the monitor well. This type of characterization information is important for predicting/simulating contaminant migration (i.e., numerical flow/transport modeling) and designing proper monitor-well strategies within this area.

Spane, Frank A.

2007-07-19T23:59:59.000Z

236

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

237

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

238

The impact of oil price shocks on the stock market return and volatility relationship  

Science Journals Connector (OSTI)

Abstract This paper examines the impact of structural oil price shocks on the covariance of U.S. stock market return and stock market volatility. We construct from daily data on return and volatility the covariance of return and volatility at monthly frequency. The measures of daily volatility are realized-volatility at high frequency (normalized squared return), conditional-volatility recovered from a stochastic volatility model, and implied-volatility deduced from options prices. Positive shocks to aggregate demand and to oil-market specific demand are associated with negative effects on the covariance of return and volatility. Oil supply disruptions are associated with positive effects on the covariance of return and volatility. The spillover index between the structural oil price shocks and covariance of stock return and volatility is large and highly statistically significant.

Wensheng Kang; Ronald A. Ratti; Kyung Hwan Yoon

2015-01-01T23:59:59.000Z

239

New Air Cleaning Strategies for Reduced Commercial Building Ventilation Energy ? FY11 Final Report  

SciTech Connect

The research carried out in this project focuses on developing novel volatile organic compounds (VOCs) air cleaning technologies needed to enable energy-saving reductions in ventilation rates. we targeted a VOC air cleaning system that could enable a 50% reduction in ventilation rates. In a typical commercial HVAC system that provides a mixture of recirculated and outdoor air, a VOC air cleaner in the supply airstream must have a 15% to 20% VOC removal efficiency to counteract a 50% reduction in outdoor air supply.

Sidheswaran, Meera; Destaillats, Hugo; Cohn, Sebastian; Sullivan, Douglas P.; Fisk, William J.

2011-10-31T23:59:59.000Z

240

Terrorism, country attributes, and the volatility of stock returns  

Science Journals Connector (OSTI)

Abstract This study investigates the interplay between terrorism and finance, focusing on the stock return volatility of American firms targeted by terrorist attacks. We find terrorism risk is an important factor in explaining the volatility of stock returns, which should be taken into account when modelling volatility. Using a volatility event-study approach and a new bootstrapping technique, we find volatility increases on the day of the attack and remain significant for at least fifteen days following the day of the attack. Cross-sectional analysis of the abnormal volatility indicates that the impact of terrorist attacks differs according to the country characteristics in which the incident occurred. We find that firms operating in wealthier, or more democratic countries, face greater volatility in stock returns relative to firms operating in developing countries. Firm exposure varies with the nature of country location, with country wealth and level of democracy playing an important role in explaining the likelihood of a terrorist attack. Our results show that despite significant terrorist events this past decade, stock markets in developed countries have not taken terrorist risk into sufficient consideration.

Naceur Essaddam; John M. Karagianis

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vocs 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

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

SciTech Connect

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

242

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

243

Recovery of manganese oxides from spent alkaline and zinc–carbon batteries. An application as catalysts for VOCs elimination  

SciTech Connect

Highlights: • Manganese oxides were synthesized using spent batteries as raw materials. • Spent alkaline and zinc–carbon size AA batteries were used. • A biohydrometallurgical process was employed to bio-lixiviate batteries. • Manganese oxides were active in the oxidation of VOCs (ethanol and heptane). - Abstract: Manganese, in the form of oxide, was recovered from spent alkaline and zinc–carbon batteries employing a biohydrometallurgy process, using a pilot plant consisting in: an air-lift bioreactor (containing an acid-reducing medium produced by an Acidithiobacillus thiooxidans bacteria immobilized on elemental sulfur); a leaching reactor (were battery powder is mixed with the acid-reducing medium) and a recovery reactor. Two different manganese oxides were recovered from the leachate liquor: one of them by electrolysis (EMO) and the other by a chemical precipitation with KMnO{sub 4} solution (CMO). The non-leached solid residue was also studied (RMO). The solids were compared with a MnO{sub x} synthesized in our laboratory. The characterization by XRD, FTIR and XPS reveal the presence of Mn{sub 2}O{sub 3} in the EMO and the CMO samples, together with some Mn{sup 4+} cations. In the solid not extracted by acidic leaching (RMO) the main phase detected was Mn{sub 3}O{sub 4}. The catalytic performance of the oxides was studied in the complete oxidation of ethanol and heptane. Complete conversion of ethanol occurs at 200 °C, while heptane requires more than 400 °C. The CMO has the highest oxide selectivity to CO{sub 2}. The results show that manganese oxides obtained using spent alkaline and zinc–carbon batteries as raw materials, have an interesting performance as catalysts for elimination of VOCs.

Gallegos, María V., E-mail: plapimu@yahoo.com.ar [Pla.Pi.Mu-Planta Piloto Multipropósito, (CICPBA-UNLP) Cno. Centenario y 505, M.B. Gonnet, Buenos Aires (Argentina); Falco, Lorena R., E-mail: mlfalco@quimica.unlp.edu.ar [Pla.Pi.Mu-Planta Piloto Multipropósito, (CICPBA-UNLP) Cno. Centenario y 505, M.B. Gonnet, Buenos Aires (Argentina); Peluso, Miguel A., E-mail: apelu@quimica.unlp.edu.ar [Centro de Investigación y Desarrollo en Ciencias Aplicadas, “Dr. J. Ronco” CINDECA (CONICET CCT La Plata), 47 N°257, La Plata, Buenos Aires (Argentina); Sambeth, Jorge E., E-mail: sambeth@quimica.unlp.edu.ar [Centro de Investigación y Desarrollo en Ciencias Aplicadas, “Dr. J. Ronco” CINDECA (CONICET CCT La Plata), 47 N°257, La Plata, Buenos Aires (Argentina); Thomas, Horacio J. [Pla.Pi.Mu-Planta Piloto Multipropósito, (CICPBA-UNLP) Cno. Centenario y 505, M.B. Gonnet, Buenos Aires (Argentina)

2013-06-15T23:59:59.000Z

244

Growth History Of Kilauea Inferred From Volatile Concentrations In  

Open Energy Info (EERE)

History Of Kilauea Inferred From Volatile Concentrations In History Of Kilauea Inferred From Volatile Concentrations In Submarine-Collected Basalts Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Growth History Of Kilauea Inferred From Volatile Concentrations In Submarine-Collected Basalts Details Activities (4) Areas (2) Regions (0) Abstract: Major-element and volatile (H2O, CO2, S) compositions of glasses from the submarine flanks of Kilauea Volcano record its growth from pre-shield into tholeiite shield-stage. Pillow lavas of mildly alkalic basalt at 2600-1900 mbsl on the upper slope of the south flank are an intermediate link between deeper alkalic volcaniclastics and the modern tholeiite shield. Lava clast glasses from the west flank of Papau Seamount are subaerial Mauna Loa-like tholeiite and mark the contact between the two

245

Volatility of Vanadia from Vanadia-Based SCR Catalysts under...  

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

Vanadia from Vanadia-Based SCR Catalysts under Accelerated Aging Conditions Volatility of Vanadia from Vanadia-Based SCR Catalysts under Accelerated Aging Conditions TiO2-supported...

246

Volatility and Growth: Credit Constraints and the Composition of Investment  

E-Print Network (OSTI)

How does uncertainty and credit constraints affect the cyclical composition of investment and thereby volatility and growth? This paper addresses this question within a model where firms engage in two types of investment: ...

Aghion, Philippe

247

A nonparametric GARCH model of crude oil price return volatility  

Science Journals Connector (OSTI)

The use of parametric GARCH models to characterise crude oil price volatility is widely observed in the empirical literature. In this paper, we consider an alternative approach involving nonparametric method to model and forecast oil price return volatility. Focusing on two crude oil markets, Brent and West Texas Intermediate (WTI), we show that the out-of-sample volatility forecast of the nonparametric GARCH model yields superior performance relative to an extensive class of parametric GARCH models. These results are supported by the use of robust loss functions and the Hansen's (2005) superior predictive ability test. The improvement in forecasting accuracy of oil price return volatility based on the nonparametric GARCH model suggests that this method offers an attractive and viable alternative to the commonly used parametric GARCH models.

Aijun Hou; Sandy Suardi

2012-01-01T23:59:59.000Z

248

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

249

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

250

MST: Organizations: Organic Materials  

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

Adhesive Bonding Adhesive Bonding Composites Encapsulation Materials Characterization Mechanical Testing Molding, Thermoforming, & Compounding Organizations Organic Materials Composite-to-metal adhesive bond Experimental/analytical study of composit-to-metal adhesive bond. The Organic Materials department in the Advanced Manufacturing and Processing Laboratory provides innovative prototype fabrication, full service small lot production, materials technology, processing expertise, and a broad range of organic material characterization and mechanical testing techniques. We encapsulate, we join and bond, we foam, we analyze and image, we build composite structures. We strive to make you, our customers, successful! We partner with you to find the right combination of materials, processing, and fixturing that will result in the highest value

251

Organic Vegetable Organic Vegetable  

E-Print Network (OSTI)

marketed separately from conventionally grown produce in order to be profitably sold. Because of the amount of organic material include compost, Purdue University · Cooperative Extension Service · Knowledge to Go

252

Oxidation of volatiles in residential wood burning equipment. Final technical report, September 1980-February 1984  

SciTech Connect

The objectives of this project are to measure, through the use of laboratory combustors, those conditions which promote complete combustion of wood volatiles in residential wood burning equipment. The conditions of interest are combustion temperature, residence time, stoichiometry, and air mixing. The project objectives are met through two laboratory approaches: (1) model compound studies: in order to measure the overall rates of oxidative pyrolysis of biomass volatiles, and to determine the types of intermediate organic species which are likely to form as part of this process, model compounds have been reacted in a specialized jet-stirred reactor, which has been developed as part of this research. (2) high-intensity wood combustion: in order to study the clean combustion of wood, that is, to investigate the conceptual design features required for clean burning, and to ascertain the levels and types of pollutant and condensible species which are most difficult to oxidize, a high-intensity, research wood combustor has been developed and examined for the different phases of the wood burning cycle. Although the objectives of the project have been met, it has not been possible, because of support limitations, to thoroughly explore several interesting aspects which have arisen because of this research. For example, a third laboratory system in which wood pyrolysis gas is injected directly into the a well characterized reactor, so that the kinetics and mechanisms of the gas-phase reaction of the actual biomass volatiles can be studied, could not be thoroughly developed. Refinements in the high-intensity wood combustor, which would bring its design features closer to practicality for the industry, could not be considered. 32 references, 37 figures, 10 tables.

Malte, P.C.; Thornton, M.M.; Kamber, P.D.

1984-04-01T23:59:59.000Z

253

Temporal Geochemical Variations In Volatile Emissions From Mount St Helens,  

Open Energy Info (EERE)

Temporal Geochemical Variations In Volatile Emissions From Mount St Helens, Temporal Geochemical Variations In Volatile Emissions From Mount St Helens, Usa, 1980-1994 Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Temporal Geochemical Variations In Volatile Emissions From Mount St Helens, Usa, 1980-1994 Details Activities (2) Areas (1) Regions (0) Abstract: Fumarole discharges (95-560°C) collected from the dacite dome inside Mount St. Helens crater show temporal changes in their isotopic and chemical compositions. A ΔD vs. Δ18O plot shows that condensed waters from the gases are mixtures of meteoric and magmatic components, but that the apparent magmatic end-member in 1994 was depleted by about 7‰ in ΔD relative to the apparent end-member in 1980. Based on ΔD modeling, approximately 63% of shallow, post-1980 magma has yet to degas.

254

Volatiles in hydrothermal fluids- A mass spectrometric study of fluid  

Open Energy Info (EERE)

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

255

High Efficiency Organic Solar Cells: December 16, 2009 - February 2, 2011  

SciTech Connect

Details on the development of novel organic solar cells incorporating Trimetasphere based acceptors are presented including: baseline performance for Lu-PCBEH acceptor blended with P3HT demonstrated at 4.89% PCE exceeding the 4.5% PCE goal; an increase of over 250mV in Voc was demonstrated for Lu-PCBEH blended with low band gap polymers compared to a comparable C60-PCBM device. The actual Voc was certified at 260mV higher for a low band gap polymer device using the Lu-PCBEH acceptor; and the majority of the effort was focused on development of a device with over 7% PCE. While low current and fill factors suppressed overall device performance for the low band gap polymers tested, significant discoveries were made that point the way for future development of these novel acceptor materials.

Walker, K.; Joslin, S.

2011-05-01T23:59:59.000Z

256

Investigation of pentaarylazafullerenes as acceptor systems for bulk-heterojunction organic solar cells  

Science Journals Connector (OSTI)

Abstract In a comparative study a novel class of pentaarylazafullerene derivatives is investigated as acceptor material in solution-processed organic solar cells. Due to their raised lowest unoccupied molecular orbital (LUMO) compared to phenyl-C61-butyric acid methyl ester (PC61BM) the orbital matching to P3HT is optimized so that an increased open-circuit voltage (VOC) compared to the standard PC61BM acceptor is gained. However, the performance of pentaarylazafullerene solar cells is limited by rather low short circuit currents (JSC) and fill factors (FF) which can be partially improved by using 1-methylnaphtalene as additive. Within this series the azafullerenes with phenoxyphenyl and phenoxymethyl addends 1 and 3 show the best results with encouraging \\{VOCs\\} of >800 mV and power conversion efficiencies (PCEs) of 0.9%.

Cordula D. Wessendorf; Regina Eigler; Siegfried Eigler; Jonas Hanisch; Andreas Hirsch; Erik Ahlswede

2015-01-01T23:59:59.000Z

257

Global data set of biogenic VOC emissions calculated by the MEGAN model over the last 30 years  

SciTech Connect

The Model of Emissions of Gases and Aerosols from Nature (MEGANv2.1) together with the Modern-Era Retrospective Analysis for Research and Applications (MERRA) meteorological fields were used to create a global emission dataset of biogenic VOCs available on a monthly basis for the time period of 1980 - 2010. This dataset is called MEGAN-MACC. The model estimated mean annual total BVOC emission of 760 Tg(C) yr1 consisting of isoprene (70%), monoterpenes (11%), methanol (6%), acetone (3%), sesquiterpenes (2.5%) and other BVOC species each contributing less than 2 %. Several sensitivity model runs were performed to study the impact of different model input and model settings on isoprene estimates and resulted in differences of * 17% of the reference isoprene total. A greater impact was observed for sensitivity run applying parameterization of soil moisture deficit that led to a 50% reduction of isoprene emissions on a global scale, most significantly in specific regions of Africa, South America and Australia. MEGAN-MACC estimates are comparable to results of previous studies. More detailed comparison with other isoprene in ventories indicated significant spatial and temporal differences between the datasets especially for Australia, Southeast Asia and South America. MEGAN-MACC estimates of isoprene and*-pinene showed a reasonable agreement with surface flux measurements in the Amazon andthe model was able to capture the seasonal variation of emissions in this region.

Sindelarova, K.; Granier, Claire; Bouarar, I.; Guenther, Alex B.; Tilmes, S.; Stavrakou, T.; Muller, J. F.; Kuhn, U.; Stefani, P.; Knorr, W.

2014-09-09T23:59:59.000Z

258

Science Organizations  

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

Organizations Science Organizations National security depends on science and technology. The United States relies on Los Alamos National Laboratory for the best of both. No place...

259

Impact of Storage Time on the Needed Capture Efficiency for Volatile Radionuclides - 13369  

SciTech Connect

During the processing of used nuclear fuel (UNF), volatile radionuclides will be discharged from the facility stack if no recovery processes are in place to limit their release. The volatile radionuclides of concern are {sup 3}H, {sup 14}C, {sup 85}Kr, and {sup 129}I. There are three key regulations that address the release of these radionuclides to the environment- 40 CFR 61, 40 CFR 190, and 10 CFR 20. These regulations apply to the total radionuclide release and establish dose limits for the maximum exposed individual (MEI) in the public both in terms of whole body dose and dose to specific organs such as the thyroid. Each radionuclide released to the environment contributes to the total dose to some degree. In this paper we attempt to evaluate the efficiency requirements for the capture processes to limit the doses to the MEI to regulatory levels. Since the total amount of each volatile radionuclide present in the UNF changes with the age of the fuel, the respective capture requirements also change with time. Specifically, we are interested in the impact of the decreasing contribution of {sup 3}H and {sup 85}Kr, which have relatively short half-lives, 12.32 y and 10.76 y, respectively, with the increasing age of the fuel (i.e., time between when the UNF is removed from the reactor and the time it is processed) on the capture requirements. In this paper we examine the capture requirements for these four radionuclides for three fuel types (pressurized water reactor [PWR] with uranium oxide fuel [UOX], PWR with mixed oxide fuel [MOX], and an advanced high temperature gas-cooled reactor [AHTGR]), several burnup values, and time out of reactor extending to 200 y. We calculate doses to the MEI with the EPA code CAP-88 and look at two dose contribution cases. In the first case, we assume that the total allowable dose is attributed to only the four volatile radionuclides. This establishes the lowest capture efficiency value possible. Since this is unrealistic, because it assumes zero dose contribution from all other radionuclides, we also examine a second case, where only 10% of the allowable dose is assigned to the four volatile radionuclides. We calculate the required decontamination factors (DFs) for both of these cases for the three fuel types, multiple fuel burnups, and fuel ages and determine whether or not the dose to the whole body or to the thyroid that drives the capture requirements would require additional effluent controls for the shorter half-life volatile radionuclides based on dose considerations. This analysis indicates that the principal isotopes of concern are generally {sup 3}H and {sup 129}I, the latter requiring the highest DFs. The maximum DF value for {sup 129}I is 8000 for the evaluated cases and assumptions used. ?60 for fresh fuels. The DF for {sup 14}C could be as high as 30 for certain fuels. These values are based on just meeting the regulatory limits, and additional engineering margins (perhaps 3x to 10x or higher) should be applied to provide a safety factor for compliance. However, by assuming less conservative dose allocations, taller stacks, different radionuclide speciation, fuel aging, and other reprocessing facility design and location parameters, the DF requirements could be significantly reduced. (authors)

Jubin, R.T.; Ilas, G. [Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37849 (United States)] [Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37849 (United States); Soelberg, N.R. [Idaho National Laboratory (United States)] [Idaho National Laboratory (United States); Strachan, D.M. [Pacific Northwest National Laboratory (United States)] [Pacific Northwest National Laboratory (United States)

2013-07-01T23:59:59.000Z

260

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

Note: This page contains sample records for the topic "vocs 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

Marginalization and aggregation of exponential smoothing models in forecasting portfolio volatility  

Science Journals Connector (OSTI)

This paper examines exponentially weighted moving average models for predicting volatility and assessing risk in portfolios. It proposes a method that identifies the decay factors of the marginal volatility mo...

Giacomo Sbrana; Andrea Silvestrini

2012-01-01T23:59:59.000Z

262

Earnings and labour market volatility in Britain, with a transatlantic comparison  

Science Journals Connector (OSTI)

Abstract We contribute new evidence about earnings and labour market volatility in Britain over the period 1992–2008, for women as well as men, and provide transatlantic comparisons (Most research about volatility refers to earnings volatility for US men.). Earnings volatility declined slightly for both men and women over the period but the changes are not statistically significant. When we look at labour market volatility, i.e. also including individuals with zero earnings in the calculations, there is a statistically significant decline in volatility for both women and men, with the fall greater for men. Using variance decompositions, we demonstrate that the fall in labour market volatility is largely accounted for by changes in employment attachment rates. We show that volatility trends in Britain, and what contributes to them, differ from their US counterparts in several respects.

Lorenzo Cappellari; Stephen P. Jenkins

2014-01-01T23:59:59.000Z

263

Flameless thermal oxidation. Innovative technology summary report  

SciTech Connect

The Flameless Thermal Oxidizer (FTO) is a commercial technology offered by Thermatrix, Inc. The FTO has been demonstrated to be an effective destructive technology for process and waste stream off-gas treatment of volatile organic compounds (VOCs), and in the treatment of VOC and chlorinated volatile organic compounds (CVOCs) off-gases generated during site remediation using either baseline or innovative in situ environmental technologies. The FTO process efficiently converts VOCs and CVOCs to carbon dioxide, water, and hydrogen chloride. When FTO is coupled with a baseline technology, such as soil vapor extraction (SVE), an efficient in situ soil remediation system is produced. The innovation is in using a simple, reliable, scalable, and robust technology for the destruction of VOC and CVOC off-gases based on a design that generates a uniform thermal reaction zone that prevents flame propagation and efficiently oxidizes off-gases without forming products of incomplete combustion (PICs).

NONE

1995-09-01T23:59:59.000Z

264

Highly efficient inverted organic solar cells using amino acid modified indium tin oxide as cathode  

SciTech Connect

In this paper, we report that highly efficient inverted organic solar cells were achieved by modifying the surface of indium tin oxide (ITO) using an amino acid, Serine (Ser). With the modification of the ITO surface, device efficiency was significantly enhanced from 0.63% to 4.17%, accompanied with an open circuit voltage (Voc) that was enhanced from 0.30?V to 0.55?V. Ultraviolet and X-ray photoelectron spectroscopy studies indicate that the work function reduction induced by the amino acid modification resulting in the decreased barrier height at the ITO/organic interface played a crucial role in the enhanced performances.

Li, Aiyuan; Nie, Riming; Deng, Xianyu, E-mail: xydeng@hitsz.edu.cn [Research Center for Advanced Functional Materials and Devices, Shenzhen Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055 (China); Wei, Huaixin; Li, Yanqing; Tang, Jianxin [Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123 (China); Zheng, Shizhao; Wong, King-Young [Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong (China)

2014-03-24T23:59:59.000Z

265

Algorithms and Data Representations for Emerging Non-Volatile Memories  

E-Print Network (OSTI)

-volatile memory (NVM). NVMs provide excellent performance such as random access, high I/O speed, low power consumption, and so on. The storage density of NVMs keeps increasing following Moore’s law. However, higher storage density also brings significant data...

Li, Yue

2014-04-29T23:59:59.000Z

266

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.

267

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

268

Renewable Hydrogen from Nonvolatile Fuels by Reactive Flash Volatilization  

Science Journals Connector (OSTI)

...with refined soy oil, biodiesel (the volatile methyl...heat supplied. This process produces ?70% selectivity...intensification of the process into millisecond time...powders is possible. The process also requires further experiments, long-term evaluation, and modeling to...

J. R. Salge; B. J. Dreyer; P. J. Dauenhauer; L. D. Schmidt

2006-11-03T23:59:59.000Z

269

Organization | Department of Energy  

Energy Savers (EERE)

About Us Organization Organization Organization Printable PDF News & Blog CIO Leadership Organization Contact Us...

270

Organization | Department of Energy  

Office of Environmental Management (EM)

About Us Organization Organization Organization News Leadership Organization History Careers Contact Us...

271

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

272

IAQ in Hospitals - Better Health through Indoor Air Quality Awareness  

E-Print Network (OSTI)

contaminants. Later one plays a vital role in IAQ of hospitals. Indoor contaminants can be further classified as Chemical contaminants and Biological contaminants. Tobacco smoke, Volatile Organic Compounds (VOC), Radon, Inorganic gases, Carbon dioxide... of 50 ? 260 OC and hence existing in vapour form at room temperature. ASHRAE Standard 62 (1999) suggests that complaints are unlikely to arise for total VOC concentrations below 3000 mg/m3, whereas above 3000 mg/m3 complaints are likely. Radon is a...

Al-Rajhi, S.; Ramaswamy, M.; Al-Jahwari, F.

2010-01-01T23:59:59.000Z

273

Volatility spillover effect of emerging markets and economic growth versus oil price volatility : the case of the Gulf Co-operation Council countries.  

E-Print Network (OSTI)

??The relationship between stock markets returns, economic growth and oil price volatility has been an issue of considerable debate. While there are many studies showing… (more)

Fayyad, Abdallah

2013-01-01T23:59:59.000Z

274

Volatile Energy Costs and the Floundering Deregulation of Electricity: A  

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

Volatile Energy Costs and the Floundering Deregulation of Electricity: A Volatile Energy Costs and the Floundering Deregulation of Electricity: A Fresh Look at Integrating Supply-Side and Demand-Side Resources Speaker(s): Bill Kelly Robert Redlinger Date: January 19, 2001 - 12:00pm Location: 90-3148 Seminar Host/Point of Contact: Julie Osborn The restructuring of the California electricity industry has not proceeded as intended. A generation capacity shortage, combined with spiraling natural gas costs and a flawed electricity market structure, have led to unprecedented wholesale electricity prices, power outages, and a political and financial crisis for the State. This crisis will not be solved through increasing electricity supply alone. Energy industry observers agree that 1.) energy efficiency, 2.) distributed on-site generation, and 3.) price

275

Comments on Americium Volatilization during Fuel Fabrication for Fast Reactors  

SciTech Connect

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

276

Volatility of Power Grids under Real-Time Pricing  

E-Print Network (OSTI)

The paper proposes a framework for modeling and analysis of the dynamics of supply, demand, and clearing prices in power system with real-time retail pricing and information asymmetry. Real-time retail pricing is characterized by passing on the real-time wholesale electricity prices to the end consumers, and is shown to create a closed-loop feedback system between the physical layer and the market layer of the power system. In the absence of a carefully designed control law, such direct feedback between the two layers could increase volatility and lower the system's robustness to uncertainty in demand and generation. A new notion of generalized price-elasticity is introduced, and it is shown that price volatility can be characterized in terms of the system's maximal relative price elasticity, defined as the maximal ratio of the generalized price-elasticity of consumers to that of the producers. As this ratio increases, the system becomes more volatile, and eventually, unstable. As new demand response technolo...

Roozbehani, Mardavij; Mitter, Sanjoy K

2011-01-01T23:59:59.000Z

277

Effects of ZnO Nanoparticles on P3HT:PCBM Organic Solar Cells with DMF-Modulated PEDOT:PSS Buffer Layers  

Science Journals Connector (OSTI)

Organic solar cells based on bulk heterojunctions (BHJs) have been investigated because of their low cost, environmentally friendly production, ease of deposition, and flexible applications. ... The best performance with this cell structure produced an open-circuit voltage, Voc, of 440 mV, a short circuit c.d., Jsc, of 2.2 mA/cm2, a fill factor, FF, of 0.56, and a conversion efficiency, ?, of 0.53%. ...

Sang Hoon Oh; Seung Jin Heo; Jeong Suk Yang; Hyun Jae Kim

2013-10-31T23:59:59.000Z

278

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

279

Innovative technologies and vadose zone treatment of chlorinated volatile organic compounds: Case study  

Science Journals Connector (OSTI)

...placed in operation in 1996 to provide hydraulic containment of groundwater containing...mechanical response of sediments to the hydraulic advancement of a probe equipped with...testing was performed using a portable, trailer-mounted SVE unit with a maximum capacity...

Jay V. Noonkester; Ralph L. Nichols; Kenneth L. Dixon

280

Halogenated Volatile Organic Compounds from the Use of Chlorine-Bleach-Containing Household Products  

Science Journals Connector (OSTI)

A number of household cleaning products (bleaches, mildew stain removers, toilet cleaners, cleaning sprays, gels, and scouring powders) contain sodium hypochlorite (NaOCl, ?5%). ... Each tube was packed at the upstream (sampling) end with 3 mm silanized glass-wool followed by a series of sections of 150 mg Tenax TA (60/80 mesh) (Supelco, Bellefonte, PA, USA), 3 mm silanized glass-wool, 100 mg Carboxen 1000 (Supelco, Bellefonte, PA), and finally, 3 mm silanized glass-wool at the downstream end. ...

Mustafa Odabasi

2008-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "vocs 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

Intake of Toxic and Carcinogenic Volatile Organic Compounds from Secondhand Smoke in Motor Vehicles  

Science Journals Connector (OSTI)

...illness, history of major medical or psychiatric conditions...the car 60 minutes after the lighting of the first cigarette. The...supported by the Flight Attendants Medical Research Institute (FAMRI...Francisco General Hospital Medical Center (NIH/NCRR UCSF-CTSI...

Gideon St.Helen; Peyton Jacob III; Margaret Peng; Delia A. Dempsey; S. Katharine Hammond; and Neal L. Benowitz

2014-12-01T23:59:59.000Z

282

The Determination of Organic Volatiles In Air Pollution Studies: Characterization of Profiles  

Science Journals Connector (OSTI)

......the presence of water. Even packed columns...accommodate the total condensation products of more...agents prior to condensation extended the sample...candidate and although recovery prob- lems are...simply by heating. Water did not repre...R. H., "The atmospheric trace contaminant......

Wolfgang Bertsch; Ray C. Chang; Albert Zlatkis

1974-04-01T23:59:59.000Z

283

The Determination of Organic Volatiles In Air Pollution Studies: Characterization of Profiles  

Science Journals Connector (OSTI)

......techniques is the presence of water. Even packed columns...recovered simply by heating. Water did not repre- sent...have little affinity for water. Samples col- lected...Gammon, R. H., "The atmospheric trace contaminant pattern...a separate portable generator supplied the power for......

Wolfgang Bertsch; Ray C. Chang; Albert Zlatkis

1974-04-01T23:59:59.000Z

284

The Determination of Organic Volatiles In Air Pollution Studies: Characterization of Profiles  

Science Journals Connector (OSTI)

......and Albert Ziatkis, Department of Chemistry, University of Houston, Houston, TX...adsorbent of high affinity. Activated char- coal is a suitable candidate and although...that the burning process in internal combustion engines leaves many of the high molecular......

Wolfgang Bertsch; Ray C. Chang; Albert Zlatkis

1974-04-01T23:59:59.000Z

285

Low-Level Detections of Halogenated Volatile Organic Compounds in Groundwater  

E-Print Network (OSTI)

Assessments L. Niel Plummer1 ; Eurybiades Busenberg2 ; Sandra M. Eberts3 ; Laura M. Bexfield4 ; Craig J. Brown5 ; Lynne S. Fahlquist6 ; Brian G. Katz7 ; and Matthew K. Landon8 Abstract: Concentrations study areas in the United States. In each case, the untreated water sample was used for drinking

286

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

287

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

2012-06-07T23:59:59.000Z

288

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

289

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

290

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.

291

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

292

The Determination of Organic Volatiles In Air Pollution Studies: Characterization of Profiles  

Science Journals Connector (OSTI)

......supports and acting as stationary phases, are covenient. The price which must be paid is the loss of a large portion of the more...5-trimethylbenzene 3. 2,3-dimethylbutane 56. isobutylbenzene 4. ethylene oxide (tent) 57. 1-methyl-2-ethylbenzene 5. n-hexane......

Wolfgang Bertsch; Ray C. Chang; Albert Zlatkis

1974-04-01T23:59:59.000Z

293

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

E-Print Network (OSTI)

, unsteady state with the local term of the total acceleration only, and unsteady state, including the convective component of the total acceleration. The bubble rise velocity for each state is derived from the momentum balance equation for corresponding flow...

Drazenovic, Mirna

2012-06-07T23:59:59.000Z

294

Field Derived Emission Factors For Formaldehyde and other Volatile Organic Compounds in FEMA Temporary Housing Units  

E-Print Network (OSTI)

Urea Formaldehyde Foam Insulation (UFFI), Consumer Product1972 urea formaldehyde foam insulation (UFFI) caused health

Parthasarathy, Srinandini

2011-01-01T23:59:59.000Z

295

The Determination of Organic Volatiles In Air Pollution Studies: Characterization of Profiles  

Science Journals Connector (OSTI)

......such as aromatic hydrocarbon or halogenated compounds...suitable. Low MW hydrocarbons in air pollutants...23), once these data have been determined...matter, by direct heat desorption. Collection...nature. Since the data are continuously...process in internal combustion engines leaves many......

Wolfgang Bertsch; Ray C. Chang; Albert Zlatkis

1974-04-01T23:59:59.000Z

296

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

E-Print Network (OSTI)

the chemical modification of a tubular y-alumina membrane with octadecyltrichlorosilane, ODS. Following the modification, unbound chlorosilane material was extracted Irom the membrane by exposure to toluene. Despite 10 the extraction step, C-H bonds were..., it was concluded that the chlorosilane groups were forming covalent bonds with thc membrane surface hydroxyl groups. A proposed reaction is illustrated in Fig. I. Note that Stevens has presented data clarifying that, because of bond length and angle...

Krohn, John Eric

2001-01-01T23:59:59.000Z

297

Reduction of carbon monoxide emissions with regenerative thermal oxidizers  

SciTech Connect

Regenerative thermal oxidizers (RTOs) have been extensively used for the control of volatile organic compound (VOC) emissions from various sources. However, very little information is available on the ability of RTOs to control carbon monoxide (CO) emissions. This paper presents the results of extensive tests conducted on two RTOs to determine their VOC and CO control efficiencies. The inlet gas stream to the RTOs includes VOC and CO concentrations as high as 2,000 ppm and 3,600 ppm, respectfully. The testing demonstrated that both RTOs were capable of controlling greater than 98% of both inlet VOCs and CO. While the destruction efficiencies within the combustion chambers exceeded 99.9%, direct leakage past valves accounted for the lower control efficiencies. The tests indicated that the overall VOC and CO control efficiencies of the RTOs may be limited by valve leakage. The design and permitting of a RTO should include conservative control estimates which account for possible valve leakage.

Firmin, S.M.; Lipke, S.; Baturay, A.

1996-09-01T23:59:59.000Z

298

Organic Photovoltaics  

Science Journals Connector (OSTI)

Satisfying the world's growing demand for energy is an urgent societal challenge. Organic photovoltaics holds promise as a cost-efficient and environmentally friendly solution.

Kippelen, Bernard

2007-01-01T23:59:59.000Z

299

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

E-Print Network (OSTI)

represent statistical significance) ...................................................................... 50 2.8 The non-parametric (Kruskal-Wallis) one-way ANOVA results for each VOC experiment (Asterisks represent statistical significance). 50.../N) ratio, soil conductivity, soil moisture, reactive iron, protein concentrations, and the sand, silt, and clay soil mineralogy. ............ 65 3.2 The non-parametric (Kruskal-Wallis) one-way ANOVA results for VOCs that were statistically significant...

McNeal, Karen Sue

2009-05-15T23:59:59.000Z

300

The mechanism of coking pressure generation II: Effect of high volatile matter coking coal, semi-anthracite and coke breeze on coking pressure and contraction  

Science Journals Connector (OSTI)

One of the most important aspects of the cokemaking process is to control and limit the coking pressure since excessive coking pressure can lead to operational problems and oven wall damage. Following on from a previous paper on plastic layer permeability we have studied the effect of contraction of semi-coke on coking pressure and the effect of organic additives on contraction. A link between contraction (or simulated contraction) outside the plastic layer and coking pressure was demonstrated. The interaction between this contraction, local bulk density around the plastic layer and the dependence of the permeability of the plastic layer on bulk density was discussed as possible mechanisms for the generation of coking pressure. The effect of blending either a high volatile matter coal or one of two semi-anthracites with low volatile matter, high coking pressure coals on the coking pressure of the binary blends has been explained using this mechanism.

Merrick Mahoney; Seiji Nomura; Koichi Fukuda; Kenji Kato; Anthony Le Bas; David R. Jenkins; Sid McGuire

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vocs 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

Characterization of Persistent Volatile Contaminant Sources in the Vadose Zone  

SciTech Connect

Remediation activities over time will alter the subsurface distribution of contaminants and likely create significant changes in the source-zone architecture. A field method was demonstrated for use of data collected from multiple individual soil vapor extraction (SVE) system well tests to locate and characterize the distribution of persistent VOC sources in the vadose zone. Operational data collected at the Department of Energy’s Hanford site were used to examine source zone alteration over time due to SVE operation and to illustrate the source-zone characterization approach. Individual well test results confirmed a heterogeneous distribution of permeability and contaminant mass discharge throughout the vadose zone. The trends in mass discharge and concentration were analyzed to determine the location and extent of the primary source zone within a lower-permeability unit at the site. This information is useful to evaluate the performance of SVE operations, and support decisions concerning system alteration or closure based on risk assessments of the impact of vadose-zone sources on groundwater contamination or vapor intrusion.

Carroll, Kenneth C.; Truex, Michael J.; Brusseau, Mark L.; Parker, Kyle R.; Mackley, Rob D.; Rohay, Virginia J.

2013-05-01T23:59:59.000Z

302

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

303

Effects of Ethanol and Volatility Parameters on Exhaust Emissions of Light-Duty Vehicles  

E-Print Network (OSTI)

26-28, 2005 THE EFFECTS OF ETHANOL AND VOLATILITY PARAMETERSare changed to include ethanol. While past studies of theincluding many with ethanol, there are some contradictory

Durbin, T; Miller, J W; Huai, T; Cocker III, D R; Younglove, Y

2005-01-01T23:59:59.000Z

304

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

SciTech Connect

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

Essays on the volatility and spillover effects of oil and food price shocks.  

E-Print Network (OSTI)

??This thesis comprises five self contained but related essays on the volatility and spillover effects of oil and food price shocks, making contributions to the… (more)

Alom, Fardous

2012-01-01T23:59:59.000Z

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  

NLE Websites -- All DOE Office Websites (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

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

309

Ammonia volatilization from N fertilizers surface applied on bermudagrass  

E-Print Network (OSTI)

- vestigate the feasibility of CaC1 as a urea hydrolysis depressant. Laboratory In a simple nonaerated experiment in air-tight jars, CaCl ad- 2 ditive with urea depressed urea hydrolysis as measured by reduction in NH3 volatilization N loss from 48 to 3...% as a result of inhibiting bio- logical activity. This depression likely resulted from retarded micro- bial activity because CaC12 salt induced high osmotic pressure. In an aerated experiment which circulated air over treated soil, more similar...

Panossian, Jack B.

1980-01-01T23:59:59.000Z

310

Organic geochemistry and organic petrography  

SciTech Connect

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

311

Asthma Triggers Connecting Your World  

E-Print Network (OSTI)

to plastics, cleaning chemicals, perfumed aerosols and other airborne volatile organic compounds (VOCs prototyped Asthma Triggers, a wireless sensor that scans the air for harmful chemicals and alerts users so with ZigBee wireless connectivity, builds on the ActuariusTM and the VitalSpanTM gateway cloud platform

Fisher, Kathleen

312

Atmos. Chem. Phys., 13, 91419158, 2013 www.atmos-chem-phys.net/13/9141/2013/  

E-Print Network (OSTI)

comprise gas phase volatile organic compounds (VOCs) or condensed phase matter which partitions at least, NEDC) on a chassis dy- namometer in a vehicle test cell. Emissions from the entire NEDC were sampled aging, with aged OA/POA in the range 9­15. A thorough investigation of the composition of the gas phase

Meskhidze, Nicholas

313

UCI Combustion Laboratory www.ucicl.uci.edu  

E-Print Network (OSTI)

UCI Combustion Laboratory www.ucicl.uci.edu August 2014 PERSONNEL Graduate Student: Andres Colorado, pressure, exhaust gas recirculation and heat losses on the emissions of nitrogen oxides. ďż˝ Compare, unburned hydrocarbons, soot particles and volatile organic compounds (VOC); moreover the addition

Detwiler, Russell

314

Atmos. Chem. Phys., 9, 88838888, 2009 www.atmos-chem-phys.net/9/8883/2009/  

E-Print Network (OSTI)

identified the long range trans- port of pollution associated with Arctic Haze as well as ocean in the lifetime of volatile organic compounds (VOCs) including methane. In addition, summertime concentra- tions of anthropogenic activities in- cluding iron, steel, and ferro-alloy manufacturing; coal com- bustion; oil

315

Air Quality Conformity G.C. Sciara  

E-Print Network (OSTI)

) · Nitrogen Dioxide (NO2) · Ozone (O3) ­ Volatile Organic Compounds (VOC) ­ Oxides of Nitrogen (NOX) · Oxides disease · Contributes to 80,000 premature deaths/year in CA #12;U.S. Sources of Oxides of Nitrogen EPA

Handy, Susan L.

316

I. Overview A. NOAA Ship Ronald H. Brown will participate in multiple deployments and recoveries of  

E-Print Network (OSTI)

of volatile organic compounds (VOCs). This collection of seawater and cell concentrations will take place (reflectivity), lifetime, and extent and by scattering solar radiation. Characterization of the properties will be made in both high and low productivity waters and relevant surface seawater parameters will be measured

317

Z .Journal of Contaminant Hydrology 43 2000 2544 www.elsevier.comrlocaterjconhyd  

E-Print Network (OSTI)

Abstract The capture and removal of a continuously produced, migrating Volatile Organic Compound Z .VOC the model aquifer. The electrical conduc- tivity of the Kq -spiked water was continuously monitored using by the stripping well, and the lower unaffected by the remediation system. Thereby, the primary factors

Gvirtzman, Haim

318

Aerosol optical and hygroscopic properties during TexAQS-GoMACCS 2006 and their impact on aerosol  

E-Print Network (OSTI)

by diesel-fueled mobile sources and from the numerous coal- fired industries and power generation stations August thru 11 September 2006) with a number of gas and aerosol instru- ments deployed to measure air and power plants, with emissions rich in reactive volatile organic compounds (VOCs) and NOX [Ryerson et al

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

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

Note: This page contains sample records for the topic "vocs 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

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

322

A Gaussian Approximation Scheme for Computation of Option Prices in Stochastic Volatility Models 1  

E-Print Network (OSTI)

perform well on simulated joint price and options data that follow the log-linear stocastic volatility of Mathematics University of Alabama Tuscaloosa AL, 35487-0350. February 2007 1Research supported by National process that follows the log-linear stochastic volatil- ity model. There are three stochastic integrals

Ji, Chuanshu

323

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

324

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

325

Rejection and fate of trace organic compounds (TrOCs) during membrane distillation  

E-Print Network (OSTI)

Rejection and fate of trace organic compounds (TrOCs) during membrane distillation Kaushalya COCs) Direct contact membrane distillation (DCMD) Volatility Fate and transport Hydrophobicity/hydrophilicity a b s t r a c t In this study, we examined the feasibility of membrane distillation (MD) for removing

326

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

SciTech Connect

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

327

In situ measurements of gas/particle-phase transitions for atmospheric semivolatile organic compounds  

Science Journals Connector (OSTI)

...abundance, as compared to an ambient run (i.e., gas-phase and particle-phase...carbon number. Because n-alkanes are straight chained, and have very low polarity, they do not enter the particle...Diurnal and seasonal variability of gasoline-related volatile organic compound emissions...

Brent J. Williams; Allen H. Goldstein; Nathan M. Kreisberg; Susanne V. Hering

2010-01-01T23:59:59.000Z

328

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

329

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

330

Digestion and rumen volatile fatty acid production by heifers fed reconstituted sorghum grain  

E-Print Network (OSTI)

ce oE M. STER OF SCIENCE January 1969 major Sub dace: Anbmal Science DIGESTION AND RlRCEN VOLATILE FATTY ACE) PRODUCTION BY REIZERS . "~ RECONSTITUTED SCRCEWI GRAIN A Tbests EDUARDO J. FA'is'I XM Approved as to s /le and oontent by...) Appendix 'cable Page Analyses of Variance of Volatile Patty Acids in liicrnno~es/Ill& liliter of Bmaen PluM Analyses of Variance of Nolo Percent Volatile Patty Acids in Ruraen gamples A9 CHAPTER I INTRODUCTION Sorghum grain i. s the principal...

Pantin, Eduardo Jose

1969-01-01T23:59:59.000Z

331

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

332

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

333

Effect of Milk Protein Concentrate on Lipid Oxidation and Formation of Fishy Volatiles in Herring Mince ( Clupea harengus) during Frozen Storage  

Science Journals Connector (OSTI)

Sensory evaluation was also conducted to assess the intensity of fishy odor, and the volatiles were analyzed using static headspace gas chromatography–mass spectrometry (SHGC-MS). ... Volatile analysis using SHGC-MS showed that 4% MPC was able to reduce headspace volatiles associated with fishy odor. ... Herring mince; SHGC-MS; lipid oxidation; fishy volatiles; fatty acids ...

H. J. F. Joaquin; S. Tolasa; A. C. M. Oliveira; C. M. Lee; K. H. Lee

2007-12-01T23:59:59.000Z

334

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

335

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

336

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

337

Volatile liquid hydrocarbon characterization of underwater hydrocarbon vents and formation waters from offshore production operations  

Science Journals Connector (OSTI)

Volatile liquid hydrocarbon characterization of underwater hydrocarbon vents and formation waters from offshore production operations ... The environmental implications of offshore oil and gas activities ... The environmental implications of offshore oil and gas activities ...

Theodor C. Sauer

1981-08-01T23:59:59.000Z

338

The Volatility and the Thermal Storage Performance of Binary Polyalcohol Systems Used in the Wall  

E-Print Network (OSTI)

In this paper, the volatility of binary systems, consisting of neopentylglycol(NPG), pentaerythritol(PE) and trihytdroxy methyl-aminomethane(TAM) with different components, was studied experimentally. In the solid -solid phase change process...

Yan, Q.

2006-01-01T23:59:59.000Z

339

Chain hotels versus independent hotels : an analysis of branding, room revenue & volatility  

E-Print Network (OSTI)

This thesis analyzes the historical performance of chain-affiliated hotels and independent (non-affiliated) hotels with an emphasis on the volatility of room revenues. The thesis attempts to prove or disprove the hypothesis ...

Langlois, Tyler J. (Tyler Joseph), 1974-

2003-01-01T23:59:59.000Z

340

Comparison of Two ARMA-GARCH Approaches for Forecasting the Mean and Volatility of Wind Speed  

Science Journals Connector (OSTI)

In this study, we develop two ARMA-GARCH models for predicting the mean and volatility of wind speed. The first model employs the standalone ARMA-GARCH model for modeling the mean wind speed and the variance simu...

Ergin Erdem; Jing Shi; Ying She

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vocs 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

Architectural Techniques For Managing Non-volatile Caches  

SciTech Connect

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

342

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

343

Influence of Prefermentative Treatments to the Major Volatile Compounds of Assyrtiko Wines  

Science Journals Connector (OSTI)

Quantification of the major volatile compounds was realized developing a rapid analytical method based on fractionation of a 50 mL wine aliquot using C18-reversed phase adsorbent. ... The method allows satisfactory determination of more than 15 volatile compounds of wine. ... The method was applied to wines produced by Assyrtiko grapes (AOC Santorini), for two consecutive years, to compare the effect of skin contact prior to fermentation and the must clarification process. ...

Despina Kechagia; Yannis Paraskevopoulos; Eleni Symeou; Maria Galiotou-Panayotou; Yorgos Kotseridis

2008-05-24T23:59:59.000Z

344

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

2012-06-07T23:59:59.000Z

345

Sorption and permeation of low molecular weight volatile compounds in polypropylene  

E-Print Network (OSTI)

SORPTION AND PERMEATION OP LOW MOLECULAR WEIGHT VOLATILE COMPOUNDS IN POLYPROPYLENE A Thesis by ANTONIO RAMIRO SANTIAGO VIDAL JUNIOR 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 August 1991 Major Subject: Mechanical Engineering SORPTION AND PERMEATION OF LOW MOLECULAR WEIGHT VOLATILE COMPOUNDS IN POLYPROPYLENE A Thesis by ANTONIO RAMIRO SANTIAGO VIDAL JUNIOR Approved...

Vidal, Antonio Ramiro Santiago

2012-06-07T23:59:59.000Z

346

Volatility Persistence in Crude Oil Markets Amlie CHARLES  

E-Print Network (OSTI)

oil markets ­ Brent, West Texas Intermediate (WTI) and Organization of Petroleum Exporting Countries Operation Desert Storm with a negative return of -42% for WTI (Askari and Krichene, 2008; Larsson

Boyer, Edmond

347

U.S. Department of Energy Categorical Exclusion Determination Form  

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

Gas Chromatographic Analysis of Samples for VOC's - Labs 11 and 12 of 772-25B Gas Chromatographic Analysis of Samples for VOC's - Labs 11 and 12 of 772-25B Savannah River Site Aiken/Aiken/South Carolina This research will include the analysis of soil gas, stack gas, and other gaseous media by gas chromatography and gas chromatography/mass spectroscopy for volatile organic compounds (VOCs). This activity involves the handling and analysis of gas samples containing VOCs. These analyses will be performed on either a Hewlett Packard Model 5890 Series II or Agilent Model 6890N Gas Chromatograph equipped with flame ionization, electron capture, and an Agilent Model 5975 Mass Selective Detector. B3.6 - Small-scale research and development, laboratory operations, and pilot projects Andrew R. Grainger Digitally signed by Andrew R. Grainger

348

U.S. Department of Energy Categorical Exclusion Determination Form  

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

Characterization of Downgradient VOC Plume and Installation of Monitoring Well MCB029B Characterization of Downgradient VOC Plume and Installation of Monitoring Well MCB029B Savannah River Site Aiken/Aiken/South Carolina Three soil borings will be advanced to an estimated depth of 160 feet to characterize the distal portion of the volatile organic compound (VOC) plume down-gradient of the ABRP/MCB/MBP OU. Groundwater monitoring well MCB029B will be installed at the soil boring location with the highest VOC concentration. The monitoring well will be screened in the upper or lower Lost Lake Aquifer Zone (ULLAZ or LLLAZ). The South Carolina Department of Health and Environmental Control (SCDHEC) requested the installation of this monitoring well to support the operational suspension of the ABRP/MCB/MBP OU recirculation well system.

349

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

350

Improved volatile fatty acid and biomethane production from lipid removed microalgal residue (LR?AR) through pretreatment  

Science Journals Connector (OSTI)

Abstract Renewable energy from lipid removed microalgal residues (LR?ARs) serves as a promising tool for sustainable development of the microalgal biodiesel industry. Hence, in this study, LR?AR from Ettlia sp. was characterized for its physico-biochemical parameters, and applied to various pretreatment to increase the biodegradability and used in batch experiments for the production of volatile fatty acids (VFA) and biomethane. After various pretreatments, the soluble organic matters were increased at a maximum of 82% in total organic matters in alkali-autoclaved sample. In addition, VFA and methane production was enhanced by 30% and 40% in alkali-sonicated and alkali-autoclaved samples, respectively. Methane heating value was recovered at maximum of 6.6 MJ kg?1 VS in alkali-autoclaved conditions with comparison to non-pretreated samples. The pretreatment remarkably improved LR?AR solubilization and enhanced VFA and biomethane production, which holds immense potential to eventually reduce the cost of algal biodiesel.

Arumuganainar Suresh; Charles Seo; Ho Nam Chang; Yeu-Chun Kim

2013-01-01T23:59:59.000Z

351

Application of Biodegradable Oils (VOS{sup TM}) for Treatment of Chlorinated Ethenes in the Vadose Zone - 12085  

SciTech Connect

Few active remediation alternatives are available to treat residual chlorinated volatile organic compounds (cVOCs) within the vadose zone. Soil vapor extraction (SVE) can be very effective at removing cVOCs in permeable soils; however, recoveries decline substantially in low permeability zones where mass transfer is diffusion-limited. Entrapped cVOCs in these zones represent a slow but continuous source of contamination to underlying groundwater. An ongoing field study was initiated at the Department of Energy's Savannah River Site (SRS) to evaluate an in situ biological treatment technology to address cVOC contamination in the vadose zone. Developed by Savannah River National Laboratory (SRNL), VOS{sup TM} is a thixotropic (shear thinning) formulation of biodegradable oil, water, nutrients, buffers, and de-chlorinating bacteria (Dehalococcoides sp.) that is designed to sequester and biodegrade slow-diffusing cVOCs from unsaturated, low permeable soils. Injection of 871 L (230 gal) of VOS{sup TM} resulted in a rapid and significant decrease in cVOC gas concentration, generation of cVOC daughter products, a decrease in oxygen concentration, and an increase in carbon dioxide and methane production. (authors)

Riha, Brian D.; Noonkester, Jay V.; Looney, Brian B.; Hyde, W. Keith; Walker, Richard W. [Savannah River National Laboratory, Aiken, SC (United States); Richardson, Stephen D.; Elkins, Brad; Beckwith, Walter [EOS Remediation, LLC, Raleigh, NC (United States)

2012-07-01T23:59:59.000Z

352

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

SciTech Connect

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

353

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

SciTech Connect

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

354

New Approach to Assess Volatile Contamination in Vadose Zone Provides Path  

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

Approach to Assess Volatile Contamination in Vadose Zone Approach to Assess Volatile Contamination in Vadose Zone Provides Path Forward for Site Closure New Approach to Assess Volatile Contamination in Vadose Zone Provides Path Forward for Site Closure April 24, 2012 - 12:00pm Addthis Conceptual site model for evaluating soil vapor extraction system performance to determine if the system should be optimized, terminated, or transitioned to another approach. Conceptual site model for evaluating soil vapor extraction system performance to determine if the system should be optimized, terminated, or transitioned to another approach. RICHLAND, Wash. and LOS ALAMOS, N.M. - Through the Deep Vadose Zone-Applied Field Research Initiative (DVZ-AFRI), scientists and engineers from Pacific Northwest National Laboratory, CH2M HILL Plateau Remediation

355

Volatility of HCl and the thermodynamics of brines during brine dryout  

SciTech Connect

Laboratory measurements of liquid-vapor partitioning (volatility) of chlorides from brines to steam can be used to indicate the potential for corrosion problems in geothermal systems. Measurements of volatilities of solutes in chloride brines have established a possible mechanism for the production of high-chloride steam from slightly acidic high temperature brines. Questions concerning the fate of NaCl in the steam production process have been addressed through extensive measurements of its volatility from brines ranging in concentration from dilute solutions to halite saturation. Recent measurements of chloride partitioning to steam over brines in contact with Geysers rock samples are consistent with our concept of the process for production of high-chloride steam.

Simonson, J.M.; Palmer, D.A.

1997-04-01T23:59:59.000Z

356

Price volatility forecasting using artificial neural networks in emerging electricity markets  

Science Journals Connector (OSTI)

In the adaptive short-term electricity price forecasting, it may be premature to rely solely on the hourly price forecast. The volatility of electricity price should also be analysed to provide additional insight on price forecasting. This paper proposes a price volatility module to analyse electricity price spikes and study the probability distribution of electricity price. Two methods are used to study the probability distribution of electricity price: the analytical method and the ANN method. Furthermore, ANN method is used to study the impact of line limits, line outages, generator outages, load pattern and bidding strategy on short term price forecasting, in addition to sensitivity analysis to determine the extent to which these factors impact price forecasting. Data used in this study are spot electricity prices from California market in the period which includes the crisis months where extreme volatility was observed.

Ahmad F. Al-Ajlouni; Hatim Y. Yamin; Ali Eyadeh

2012-01-01T23:59:59.000Z

357

Final Report - Glass Formulation Testing to Increase Sulfate Volatilization from Melter, VSL-04R4970-1, Rev. 0, dated 2/24/05  

SciTech Connect

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

358

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.

359

Waste Tank Organic Safety Project: Analysis of liquid samples from Hanford waste tank 241-C-103  

SciTech Connect

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

360

Market-oriented ethanol and corn-trade policies can reduce climate-induced US corn price volatility  

Science Journals Connector (OSTI)

Agriculture is closely affected by climate. Over the past decade, biofuels have emerged as another important factor shaping the agricultural sector. We ask whether the presence of the US ethanol sector can play a role in moderating increases in US corn price variability, projected to occur in response to near-term global warming. Our findings suggest that the answer to this question depends heavily on the underlying forces shaping the ethanol industry. If mandate-driven, there is little doubt that the presence of the corn-ethanol sector will exacerbate price volatility. However, if market-driven, then the emergence of the corn-ethanol sector can be a double-edged sword for corn price volatility, possibly cushioning the impact of increased climate driven supply volatility, but also inheriting volatility from the newly integrated energy markets via crude oil price fluctuations. We find that empirically the former effect dominates, reducing price volatility by 27%. In contrast, mandates on ethanol production increase future price volatility by 54% in under future climate after 2020. We also consider the potential for liberalized international corn trade to cushion corn price volatility in the US. Our results suggest that allowing corn to move freely internationally serves to reduce the impact of near-term climate change on US corn price volatility by 8%.

Monika Verma; Thomas Hertel; Noah Diffenbaugh

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vocs 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

The impact of acetate metabolism on yeast fermentative performance and wine quality: reduction of volatile acidity of grape musts and wines  

Science Journals Connector (OSTI)

Acetic acid is the main component of the volatile acidity of grape musts and wines. It can be formed as a by ... bacteria, which can metabolize residual sugars to increase volatile acidity. Acetic acid has a nega...

Alice Vilela-Moura; Dorit Schuller…

2011-01-01T23:59:59.000Z

362

The Organic Rankine Cycle  

Science Journals Connector (OSTI)

Chap. 3 is dedicated to Rankine cycles with organic fluids: the so-called organic Rankine cycles (ORC), which in recent years have ... of the use of...

Costante Mario Invernizzi

2013-01-01T23:59:59.000Z

363

Organization | Department of Energy  

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

Organization Organization The Office of Economic Impact and Diversity is comprised of: The Office of the Director- contact us Office of Minority Business and Economic Development -...

364

In Vitro Genotoxicity of Gasoline and Diesel Engine Vehicle Exhaust Particulate and Semi-Volatile Organic Compound Materials  

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

2002 DEER Conference Presentation: U.S. Centers for Disease Control and Prevention - National Institute for Occupational Safety and Health

365

Airborne and ground based measurements of volatile organic compounds using proton transfer reaction mass spectrometry in Texas and Mexico City  

E-Print Network (OSTI)

Valente of the Tennessee Valley Authority, and Dr. Carl Berkowitz and Dr. Rahul Zaveri of the Pacific Northwest National Laboratory during the TEXAQS 2005 campaign is appreciated. During the MILAGRO campaign, Dr. Berk Knighton of Aerodyne and Montana... of the Tennessee Valley Authority (TVA), from this ship channel transect are depicted in Figures 2 and 3. Figure 2 depicts measured mixing ratios relative to time while Figure 3 depicts the measured mixing ratio in relation to distance along this linear transect...

Fortner, Edward Charles

2009-05-15T23:59:59.000Z

366

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

367

A Review and a Limited Comparison of Methods for Measuring Total Volatile Organic Compounds in Indoor Air  

E-Print Network (OSTI)

the sample to obtain a total-ion-current (TIC) chromatogram.The TIC of the sample can thenand calibrated against the TIC response of a standard(s).

Hodgson, A.T.

2011-01-01T23:59:59.000Z

368

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

369

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

370

Determination of Volatile Organic and Polycyclic Aromatic Hydrocarbons in Crude Oil with Efficient Gas-Chromatographic Methods  

Science Journals Connector (OSTI)

......in crude oil samples showed little change after 3 months of storage in glass bottles. Calibration for 2-methyl butane, n-pentane...determination HPLC for polycyclic aromatic hydrocarbons in seawater samples and its application to Japan Sea. Chemical Pharmaceutical......

Haijing Wang; Helmut Geppert; Thomas Fischer; Wolfgang Wieprecht; Detlev Möller

2014-09-01T23:59:59.000Z

371

Boron Volatilization and Its Isotope Fractionation during Evaporation of Boron Solution  

Science Journals Connector (OSTI)

Evaporation experiments were undertaken to determine the volatility of parts-per-million concentrations of boron in water and dilute HCl in the presence and absence of equimolar mannitol and/or cesium. Multiple 10 mL aliquots prepared identically were ...

Y. K. Xiao; R. D. Vocke, Jr.; G. H. Swihart; Y. Xiao

1997-12-15T23:59:59.000Z

372

Separation and Volatility of Locational Marginal Prices in Restructured Wholesale Power Markets  

E-Print Network (OSTI)

Test Bed I. INTRODUCTION THE wholesale power market design proposed by the U.S. Federal Energy1 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

Tesfatsion, Leigh

373

Plant Odor Analysis of Potato: Response of Guatemalan Moth to Above- and Belowground Potato Volatiles  

Science Journals Connector (OSTI)

Plant Odor Analysis of Potato: Response of Guatemalan Moth to Above- and Belowground Potato Volatiles ... Potatoes were planted in fertilized and limed peat soil (NPK 180:90:195 g/m3; Hydro Agri AB, Landskrona, Sweden) in 5-L plastic pots. ...

Miriam Frida Karlsson; Göran Birgersson; Alba Marina Cotes Prado; Felipe Bosa; Marie Bengtsson; Peter Witzgall

2009-06-04T23:59:59.000Z

374

Auto-correlated behavior of WTI crude oil volatilities: A multiscale perspective  

Science Journals Connector (OSTI)

In this paper, we investigate the long-range auto-correlated behavior of WTI crude oil volatility series employing multifractal detrended fluctuation analysis. Our findings show that the for small time scales, the auto-correlations of volatilities were multifractal while for large time scales, the auto-correlations were nearly monofractal. Based on multiscale analysis, we also investigate the dynamics of auto-correlations for different intervals of time scales and find that several shocks could make significant effects on the auto-correlated behaviors for small time scales. Analyzing the dynamics of multifractality degrees of auto-correlations for small time scales, we find that the stronger auto-correlations were always related to the lower degrees of multifractality. At last, we have discussions on the determination factors of price behavior, the predictive implications of scaling behavior in volatilities for oil markets and the reasons why long-range auto-correlations of volatility were always strong for both small time scales and large time scales. Our results are very important theoretically and practically.

Yudong Wang; Yu Wei; Chongfeng Wu

2010-01-01T23:59:59.000Z

375

LETTER doi:10.1038/nature13032 A large source of low-volatility secondary  

E-Print Network (OSTI)

of atmospheric aerosol1,2 , which is known to affect the Earth's radi- ation balance by scattering solar radiation and by acting as cloud condensation nuclei3 . The quantitative assessment of such climate abundant, essentially non- volatile organicvapours4­6 , but the sourcesand compositionsofsuch

Cai, Long

376

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

377

Metabolism of 210Po in rats: volatile 210Po in excreta  

Science Journals Connector (OSTI)

......Laboratories, Atomic Energy of Canada Limited...as it emits high-energy alpha particles...stayed and in his own home. Release of volatile...Laboratories, Atomic Energy of Canada Limited...rat, their daily consumption of food and water...efficiency was 98.6 % (average of five replicates......

Chunsheng Li; Baki Sadi; Heather Wyatt; Michelle Bugden; Nicholas Priest; Diana Wilkinson; Gary H. Kramer

2010-07-01T23:59:59.000Z

378

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

379

Selective Trapping of Volatile Fission Products with an Off-Gas Treatment System  

SciTech Connect

A head-end processing step, termed DEOX for its emphasis on decladding via oxidation, is being developed for the treatment of spent oxide fuel by pyroprocessing techniques. The head-end step employs high temperatures to oxidize UO2 to U3O8 resulting in the separation of fuel from cladding and the removal of volatile fission products. Development of the head-end step is being performed in collaboration with the Korean Atomic Energy Research Institute (KAERI) through an International Nuclear Energy Research Initiative. Following the initial experimentation for the removal of volatile fission products, an off-gas treatment system was designed in conjunction with KAERI to collect specific fission gases. The primary volatile species targeted for trapping were iodine, technetium, and cesium. Each species is intended to be collected in distinct zones of the off-gas system and within those zones, on individual filters. Separation of the volatile off-gases is achieved thermally as well as chemically given the composition of the filter media. A description of the filter media and a basis for its selection will be given along with the collection mechanisms and design considerations. In addition, results from testing with the off-gas treatment system will be presented.

B.R. Westphal; J.J. Park; J.M. Shin; G.I. Park; K.J. Bateman; D.L. Wahlquist

2008-07-01T23:59:59.000Z

380

Memory in Returns and Volatilities of Futures' Contracts BONNIE K. RAY*  

E-Print Network (OSTI)

Memory in Returns and Volatilities of Futures' Contracts NUNO CRATO BONNIE K. RAY* Various authors claim to have found evidence of stochastic long memory behavior in futures' contract returns using estimate of the long- memory parameter. Results based on these new methods provide no evidence for persis

Crato, Nuno

Note: This page contains sample records for the topic "vocs 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

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

382

Coupled Physical/Chemical and Biofiltration Technologies to Reduce Air Emissions from Forest Products Industries  

SciTech Connect

The research is a laboratory and bench-scale investigation of a system to concentrate and destroy volatile organic compounds (VOCs), including hazardous air pollutants, formed from the drying of wood and the manufacture of wood board products (e.g., particle board and oriented strandboard). The approach that was investigated involved concentrating the dilute VOCs (<500 ppmv) with a physical/chemical adsorption unit, followed by the treatment of the concentrated voc stream (2,000 to 2,500 ppmv) with a biofiltration unit. The research program lasted three years, and involved three research organizations. Michigan Technological University was the primary recipient of the financial assistance, the USDA Forest Products Laboratory (FPL) and Mississippi State University (MSU) were subcontractors to MTU. The ultimate objective of this research was to develop a pilot-scale demonstration of the technology with sufficient data to provide for the design of an industrial system. No commercialization activities were included in this project.

Gary D. McGinnis

2001-12-31T23:59:59.000Z

383

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

384

Oxidation and volatilization of a niobium alloy. Fusion Safety Program/Activation Products Task  

SciTech Connect

This report presents the findings from a preliminary investigation into oxidation and volatilization characteristics of a niobium alloy. Niobium is a candidate alloy for use in plasma facing components (PFCS) in experimental fusion reactors like the Intemational Thermonuclear Experimental Reactor (ITER). An experimental alloy was tailored to simulate small changes in chemistry which could result from transmutations from irradiation. The alloy was exposed in air and steam between 800{degree}C and 1200{degree}C. Volatilized products and hydrogen were collected and measured. Post-test examinations were also performed on the samples to determine the amount of material loss during the exposures. The obtained measurements of volatilization flux (g/m{sup 2}-s), hydrogen generation rates (liters/m{sup 2}-s), and recession rates (mm/s) are data which can be used for safety analyses and material performance to predict consequences which may result from an accident involving the ingress of air or steam into the plasma chamber of fusion reactor. In our volatility tests, only molybdenum and niobium were found at release levels above the detection limit. Although molybdenum is present at only 0.12 wt%, the quantities of this element volatilized in air are nearly comparable to the quantities of niobium released. The niobium release in steam is only three to four times higher than that of molybdenum in steam. The hydrogen production of the niobium alloy is compared with other PFC materials that we have tested, specifically, beryllium, graphite, and a tunesten alloy. At high temperatures, the hydrogen production rate of the niobium alloy is among the lowest of these materials, significantly lower than beryllium. To understand what this means in an accident situation, modeling is necessary to predict temperatures, and therefore total hydrogen production. The INEL is currently doing this modeling.

Smolik, G.R.; McCarthy, K.A.

1992-07-01T23:59:59.000Z

385

Transportation Organization and Functions  

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

Office of Packaging and Transportation list of organizations and functions, with a list of acronyms.

386

Product Volatilization as a Probe of the Physics and Chemistry of Latent Image Formation in Chemically Amplified Resists,  

Science Journals Connector (OSTI)

Product Volatilization as a Probe of the Physics and Chemistry of Latent Image Formation in Chemically Amplified Resists†,‡ ... The products pass through an all-glass line that uses a high-flow gas stream to extract a small fraction of the product gases through a capillary for analysis. ... Because the rates of each of the sequential steps leading to thickness lossdeprotection, volatilization, and densificationcan be no slower than the overall observed rate of densification, the data in Table 3 provide a lower limit for the rates of volatilization and film densification at 100 °C. ...

W. D. Hinsberg; F. A. Houle; G. M. Poliskie; D. Pearson; M. I. Sanchez; H. Ito

2002-08-15T23:59:59.000Z

387

 

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

A task to characterize the volatile organic compound (VOC) concentration in the headspace of a closed container with dried DeconGel 1101 (MSDS A task to characterize the volatile organic compound (VOC) concentration in the headspace of a closed container with dried DeconGel 1101 (MSDS 38502). The tests described here are designed to simulate the disposal of this decontamination agent in a waste package after some predetermined drying time and packaging time. Non-radiological samples will be made by spreading decon gel on stainless steel substrates. The gel will be allowed to dry for 24 hours in the lab adjacent to the chemical hood. Samples will loose ~ 60-80% of its original weight due to evaporation of water and ethanol. The remainder of the samples will be stored in 1 liter containers for specific time period. Head Space will be sampled and analyzed by analytical measurement services.

388

Carlsbad Field Office P. O. Box 3090 Ca  

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

rl rl sbad, New Mexico 88221 May 04,2011 Mr. James Bearzi, Chief Hazardous Waste Bureau New Mexico Environment Department 2905 Rodeo Park Drive East, Building 1 Santa Fe , New Mexico 87505-6303 Subject: Notification of Exceedance of Disposal Room Volatile Organic Compound Concentration of Concern for Carbon Tetrachloride Dear Mr. Bearzi: The purpose of this letter is to notify you of the receipt of validated analytical results for a compound which exceeded the 50% action level for a volatile organic compound (VOC) concentration of concern listed in Part 4 , Table 4.6.3.2 of the Waste Isolation Pilot Plant Hazardous Waste Facility Permit (Permit) . The carbon tetrachloride value for the March 22 , 2011 , VOC disposal room sample obtained from Panel 5, closed Room 7 location 7i, and the March 23, 2011

389

CX-009066: Categorical Exclusion Determination | Department of Energy  

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

66: Categorical Exclusion Determination 66: Categorical Exclusion Determination CX-009066: Categorical Exclusion Determination Characterization of Downgradient Volatile Organic Compounds Plume and Installation of Monitoring Well CX(s) Applied: B3.1 Date: 07/24/2012 Location(s): South Carolina Offices(s): Savannah River Operations Office Three soil borings will be advanced to an estimated depth of 160 feet to characterize the distal portion of the volatile organic compound (VOC) plume down-gradient of the ABRP/MCB/MBP OU. Groundwater monitoring well MCB029B will be installed at the soil boring location with the highest VOC concentration. The monitoring well will be screened in the upper or lower Lost Lake Aquifer Zone (ULLAZ or LLLAZ). The South Carolina Department of Health and Environmental Control (SCDHEC) requested the installation of

390

Health assessment for Motco, Incorporated, Texas City, Galveston County, Texas, Region 6. CERCLIS No. TXD980629851. Addendum. Final report  

SciTech Connect

The MOTCO National Priorities List (NPL) site is located in the City of LaMarque, Galveston County, Texas. The contaminants of concern consist of several volatile organic compounds (VOCs) and semi-volatile organic compounds (semi-VOCs). Evidence of heavy metal contamination was also noted. Areas of highest contaminant concentration are in the subsurface soil, on-site pits, and shallow ground water. Population exposure to the site is limited due to location; those most likely to be exposed are unprotected remedial workers and trespassers. Although these groups might be exposed by skin contact with, ingestion of, or inhalation of contaminated soil and pit waste, there is no evidence that exposures to site contaminants are occurring. Therefore, the site is currently classified as no public health hazard. The ATSDR Health Activities Recommendation Panel (HARP) and the Texas Department of Health (TDH) have evaluated the MOTCO site for appropriate follow-up with respect to health activities.

Not Available

1992-05-07T23:59:59.000Z

391

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

392

The impact of crude-oil price volatility on agricultural employment in the United States  

SciTech Connect

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

393

Effect of sampling technique on the measurement of gasoline volatility. Technical report  

SciTech Connect

The U.S. Environmental Protection Agency is proposing the adoption of regulations that would reduce the amount of hydrocarbons released to the atmosphere due to evaporation of gasoline. One regulatory alternative under consideration is to put an upper limit on volatility. Volatility is typically quantified by measurement of Reid vapor pressure. The purpose of the report was to identify and quantify any differences in vapor pressure caused by the technique used to obtain the sample. The objective of the effort is identify and document a fast, inexpensive, and reliable method to obtain enforcement-quality samples at service station-type facilities. The report examines the effect of four sampling techniques and two methods of analysis on three types of fuels.

Scarbro, C.A.; White, J.T.

1987-07-01T23:59:59.000Z

394

Urban air pollution from private vehicles has been declining since the 1970s (1012) even as the number of vehicles and vehicle miles  

E-Print Network (OSTI)

), volatile organic compounds (VOC), and ammonia (NH3)] cost 1.3 to 1.4 cents per VMT for automobiles using from 1.1 to 1.2 cents per VMT for compressed nat- ural gas to 1.5 to 1.6 cents per VMT for hybrid-electric vehicles. For 2007, the American Automobile Association (AAA) estimated that the average cost of automobile

Jaramillo, Paulina

395

Comparison of hydrophilic properties of TiO2 thin films prepared by solgel method and reactive magnetron sputtering system  

E-Print Network (OSTI)

magnetron sputtering system S.-H. Nam a, , S.-J. Cho a , C.-K. Jung a , J.-H. Boo a, , J. SĂ­cha b , D. Heman substoichiometric TiO2 - x targets of 50 mm in diameter. Dual magnetron supplied by dc bipolar pulsed power source of hazardous volatile organic compounds (VOC), the removal of endocrine disrupters, the recovery of heavy metal

Boo, Jin-Hyo

396

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

397

Volatiles from potato plants infected with potato leafroll virus attract and arrest the virus vector, Myzus persicae (Homoptera: Aphididae)  

Science Journals Connector (OSTI)

7 March 2002 research-article Volatiles from potato plants infected with potato leafroll virus attract and arrest the virus vector...previously reported preferential colonization of potatoes infected by potato leafroll virus (genus Polerovirus...

2002-01-01T23:59:59.000Z

398

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

399

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 ...

Kretzschmar, Gavin Lee; Moles, Peter

2006-01-01T23:59:59.000Z

400

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

Note: This page contains sample records for the topic "vocs 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

Ammonia volatilization from surface application of ammonium sulfate to carbonate systems  

E-Print Network (OSTI)

correspond- 3 ed to the simultaneous loss of H 0 and NH . Jewitt (1942) showed that as H 0 loss increased due to evaporation the amount of NH volatilized increased on four alkaline Sudan soils when (NHL?) 2SOL? was surface appli- ed. He proposed...?OH, (IKt) CO , or NH~HCO depending upon the factors mentioned above. This suggests a rather complicated reaction mechanism. Duplessis and Kroontje (1964) also supported Jewitt's (1942) mechanism. In their experiment, (NHL?) SOL? wes surface applied...

Feagley, Sam Edward

1976-01-01T23:59:59.000Z

402

ARM - Field Campaign - Observations and Modeling of the Green Ocean Amazon:  

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

Semi-Volatile Thermal desorption Aerosol Gas chromatograph (SVTAG) Semi-Volatile Thermal desorption Aerosol Gas chromatograph (SVTAG) Related Campaigns Observations and Modeling of the Green Ocean Amazon (GOAMAZON 2014) 2014.01.01, Martin, AMF Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Observations and Modeling of the Green Ocean Amazon: Semi-Volatile Thermal desorption Aerosol Gas chromatograph (SVTAG) 2014.02.01 - 2014.10.15 Lead Scientist : Allen Goldstein Description In areas where biogenic emissions are oxidized in the presence of anthropogenic pollutants such as SO2, NOx and black carbon, it has become increasingly apparent that secondary organic aerosol (SOA) formation from biogenic volatile organic compounds (VOCs) is substantially enhanced. Research is urgently needed to elucidate fundamental processes of natural

403

Semitransparent organic solar cells  

Science Journals Connector (OSTI)

The organic solar cell technology has attracted great interests due to ... low cost solution process capability. Bulk heterojunction organic solar cells offer a potentially much cheaper alternative way to harness...

Furong Zhu

2014-03-01T23:59:59.000Z

404

Estimation of ammonia volatilization from surface-applied urea as indicated by bermudagrass N-use efficiency  

E-Print Network (OSTI)

ESTIMATION OF AMMONIA VOLATILIZATION FROM SURFACE-APPLIED UREA AS INDICATED BY BERMUDAGRASS N-USE EFFICIENCY A Thesis by JOHN MATTHEW DRWAL Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1986 Major Subject: Soil Science ESTIMATION OF AMMONIA VOLATILIZATION FROM SURFACE-APPLIED UREA AS INDICATED BY BERMUDAGRASS N-USE EFFICIENCY A Thesis by JOHN MATTHEW DRWAL Approved as to style and content by...

Drwal, John Matthew

2012-06-07T23:59:59.000Z

405

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

406

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

407

Untitled Page  

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

Environmental Reporting Requirements Environmental Reporting Requirements (To filter the table, type a word or phrase in the boxes below that corresponds with the column you would like to filter. Example, in the box above Report type "monitoring", then select the Go button or use the Enter key on your keyboard) (To reset your filter delete the contents from the boxes and select the Go button or the Enter key) Report Type-Scheduled Unscheduled Frequency Due Date Origin of Requirement Reference Preparing Organization(s) Reviewing Organization(s) Recipient(s) Semiannual Volatile Organic Compound (VOC ) Monitoring Hydrogen-Methane Report S Semiannually 26-Oct and 26-Apr NMHWA HWFP IV.F.2.b The Permittees shall report to the Secretary semiannually, beginning twelve months after issuance of this Permit, The data and analysis of the VOC Monitoring Plan.

408

Organization | Department of Energy  

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

Organization Organization Organization Office of Indian Energy Organizational Structure As a program office at DOE responsible for implementing energy programs, the Office of Indian Energy is structurally organized under the Office of the Under Secretary. This programmatic structure also focuses and facilitates the coordination between the Office of Indian Energy and the other companion program offices such as the Office of Fossil Energy, Office of Electricity and Energy Reliability and Office of Energy Efficiency and Renewable Energy. The Office of Indian Energy is organized around its major statutory functions, namely, policy and programs: Indian Energy Policy. The Office of Indian Energy coordinates participation in the development, refinement, training, and advice

409

Adsorption of organic molecules may explain growth of newly nucleated clusters and new particle formation  

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

Adsorption Adsorption of organic molecules may explain growth of newly nucleated clusters and new particle formation Jian Wang 1 and Anthony S. Wexler 2 Received 21 February 2013; revised 4 April 2013; accepted 5 April 2013. [1] New particle formation consists of homogeneous nucleation of thermodynamically stable clusters followed by growth of these clusters to a detectable size. For new particle formation to take place, these clusters need to grow sufficiently fast to escape coagulation with preexisting particles. Previous studies indicated that condensation of low-volatility organic vapor may play an important role in the initial growth of the clusters. However, due to the relatively high vapor pressure and partial molar volume of even highly oxidized organic compounds, the strong Kelvin effect may prevent typical ambient organics from condensing on these small clusters. Here we show

410

APS Users Organization  

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

APSUO APSUO By-Laws Steering Commitee Employment Meetings Compton Award Franklin Award APS Users Organization The APSUO is responsible for advising the APS Associate Laboratory Director in the following areas: The Organization will serve as an advocacy group for the Facility and its user community. The Organization will provide advice to the ALD on matters affecting the user community. The Organization will assure good communication between the APS user community and the APS management. APSUO By-Laws The by-laws upon which the APS User Organization is based. List of Steering Committee Members Steering committee for the APS Users Organization. Employment Bulletin Board APS-related employment opportunities. APSUO Steering Committee Meetings Minutes and presentations from the APSUO meetings.

411

Cascade Organic Solar Cells  

Science Journals Connector (OSTI)

Cascade Organic Solar Cells ... Multiple factors control the efficiency of organic solar cells, making it difficult to use single donor or acceptor materials to balance the, often opposing, material properties required to optimize device performance. ... We demonstrate planar organic solar cells consisting of a series of complementary donor materials with cascading exciton energies, incorporated in the following structure: glass/indium-tin-oxide/donor cascade/C60/bathocuproine/Al. ...

Cody W. Schlenker; Vincent S. Barlier; Stephanie W. Chin; Matthew T. Whited; R. Eric McAnally; Stephen R. Forrest; Mark E. Thompson

2011-09-02T23:59:59.000Z

412

Modern Organic Chemistry  

Science Journals Connector (OSTI)

... to organic chemistry, tautomerism, glutaconic acids, the constitution of urea, the menthone chemistry, carene, hydroxymethylenecamphor, squalene, insulin, the production of acetic acid from cellulose by anaerobic fermentation ...

J. R.

1928-06-02T23:59:59.000Z

413

EMSL - soil organic matter  

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

soil-organic-matter en Structures and Stabilities of (MgO)n Nanoclusters. http:www.emsl.pnl.govemslwebpublicationsstructures-and-stabilities-mgon-nanoclusters

414

Fate of anthropogenic cyclic volatile methylsiloxanes in a wastewater treatment plant  

Science Journals Connector (OSTI)

Abstract The fate of cyclic volatile methylsiloxanes (cVMS) – octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecamethylcyclohexasiloxane (D6) – was evaluated in a typical secondary activated sludge wastewater treatment plant (WWTP). Water samples (influent, primary effluent, and final effluent) and sludge (primary sludge and waste activated sludge) samples were collected at overnight low, morning high, afternoon low, and evening high flows. Concentrations of cVMS in influents fluctuated with the influent flows, ranging from 0.166 to 1.13 ?g L?1, 3.47–19.3 ?g L?1, and 0.446–3.87 ?g L?1 for D4, D5, and D6, respectively. Mass balance analysis of cVMS showed the average mass of D4, D5, and D6 entering and exiting the plant in influent and effluent, respectively, were 109 g d?1, 2050 g d?1, 280 g d?1, and 1.41 g d?1, 27.0 g d?1, 1.90 g d?1. The total removal efficiency of cVMS was >96%. To elucidate their detailed removal mechanisms, Mackay's fugacity-based treatment plant model was used to simulate the fate of cVMS through the WWTP. Due to the unusual combination of high hydrophobicity and volatility of cVMS, volatilization in the aeration tank and adsorption to sludge were the two main pathways of cVMS removal from water in this WWTP based on the experimental and modeled results. The morning and evening high influent mass flows contributed almost equally at approximately 40% of the total daily cVMS mass, with D5 accounting for the majority of this daily loading.

De-Gao Wang; Monica Aggarwal; Tara Tait; Samantha Brimble; Grazina Pacepavicius; Laura Kinsman; Mike Theocharides; Shirley Anne Smyth; Mehran Alaee

2014-01-01T23:59:59.000Z

415

Modelling and forecasting fossil fuels, CO2 and electricity prices and their volatilities  

Science Journals Connector (OSTI)

In the current uncertain context that affects both the world economy and the energy sector, with the rapid increase in the prices of oil and gas and the very unstable political situation that affects some of the largest raw materials’ producers, there is a need for developing efficient and powerful quantitative tools that allow to model and forecast fossil fuel prices, CO2 emission allowances prices as well as electricity prices. This will improve decision making for all the agents involved in energy issues. Although there are papers focused on modelling fossil fuel prices, CO2 prices and electricity prices, the literature is scarce on attempts to consider all of them together. This paper focuses on both building a multivariate model for the aforementioned prices and comparing its results with those of univariate ones, in terms of prediction accuracy (univariate and multivariate models are compared for a large span of days, all in the first 4 months in 2011) as well as extracting common features in the volatilities of the prices of all these relevant magnitudes. The common features in volatility are extracted by means of a conditionally heteroskedastic dynamic factor model which allows to solve the curse of dimensionality problem that commonly arises when estimating multivariate GARCH models. Additionally, the common volatility factors obtained are useful for improving the forecasting intervals and have a nice economical interpretation. Besides, the results obtained and methodology proposed can be useful as a starting point for risk management or portfolio optimization under uncertainty in the current context of energy markets.

Carolina García-Martos; Julio Rodríguez; María Jesús Sánchez

2013-01-01T23:59:59.000Z

416

A study of Shanghai fuel oil futures price volatility based on high frequency data: Long-range dependence, modeling and forecasting  

Science Journals Connector (OSTI)

In existing researches, the investigations of oil price volatility are always performed based on daily data and squared daily return is always taken as the proxy of actual volatility. However, it is widely accepted that the popular realized volatility (RV) based on high frequency data is a more robust measure of actual volatility than squared return. Due to this motivation, we investigate dynamics of daily volatility of Shanghai fuel oil futures prices employing 5-minute high frequency data. First, using a nonparametric method, we find that RV displays strong long-range dependence and recent financial crisis can cause a lower degree of long-range dependence. Second, we model daily volatility using RV models and GARCH-class models. Our results indicate that RV models for intraday data overwhelmingly outperform GARCH-class models for daily data in forecasting fuel oil price volatility, regardless the proxy of actual volatility. Finally, we investigate the major source of such volatile prices and found that trader activity has major contribution to fierce variations of fuel oil prices.

Li Liu; Jieqiu Wan

2012-01-01T23:59:59.000Z

417

Organic vapor jet printing system  

SciTech Connect

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

418

Automation of organic elemental analysis  

Science Journals Connector (OSTI)

Automation of organic elemental analysis ... Describes the development and design of an apparatus for automated organic elemental analysis. ...

Velmer B. Fish

1969-01-01T23:59:59.000Z

419

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

420

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

Note: This page contains sample records for the topic "vocs 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

Long-Term Growth and Short-Term Volatility: The Labour Market Nexus  

E-Print Network (OSTI)

(1997) and (2000), Black- burn and Galindev (2003), show that when the knowledge (embodied or disembodied) accumulation externality works only through labour, volatility will be detrimental to growth. However, De Hek (1999), going back to Romer’s (1986... where mpt ? MtPtKt . Equation (10) also tells us that inflation pit+1 = Pt+1Pt ? 1 evolves according to: (1 + pit)(1 + gt) = at. (29) Coming to the labour market equilibrium, (17) in terms of stationary variables be- comes: Lt = (?2atbtEt?1Lta?1t ??ct...

Annicchiarico, B; Corrado, Luisa; Pelloni, A

422

Selling body organs  

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

Selling body organs Selling body organs Name: Betty A Laliberte Location: N/A Country: N/A Date: N/A Question: If a tissue donor dies and some of his/her tissue is donated, should the family be given money or some other benefit? I am a freshman at York HS and am doing a bioethics project. Replies: An interesting question. In my opinion, a family should not receive payment for organ donation. That would introduce an economic element into the decision, which does not seem appropriate. One problem is: Who will pay? The recipient? What if he can't afford it? Who gets the organ? The highest bidder? I guess part of my problem with selling organs and tissues is religious in nature. To me, my life and my body were given freely to me and they are not mine to sell to someone else. They certainly do not belong to my family to profit from.

423

Generation risk assessment in volatile conditions with wind, hydro, and natural gas units  

Science Journals Connector (OSTI)

This paper studies a generating company (GENCO)’s midterm (a few months to a year) scheduling payoffs and risks in volatile operating conditions. The proposed algorithm considers the integration of intermittent wind units into a GENCO’s generation assets and coordinates the GENCO’s hourly wind generation schedule with that of natural gas (NG) units (with volatile gas prices) and hydro units (with water inflow forecast) for maximizing the GENCO’s payoff. The proposed midterm GENCO model applies market price forecasts to the risk-constrained stochastic price-based unit commitment (PBUC) for calculating the GENCO’s risk in energy and ancillary services markets. The proposed PBUC minimizes the cost of (a) NG contracts, storage, startup and shutdown, (b) startup and shutdown of cascaded hydro units, and (c) penalty for defaulting on the scheduled power delivery. Simulation results show that the diversification of generating assets including bilateral contracts (BCs) could enhance the GENCO’s midterm planning by increasing the expected payoff and decreasing the financial risk.

Cem Sahin; Mohammad Shahidehpour; Ismet Erkmen

2012-01-01T23:59:59.000Z

424

Volatile abundances in submarine glasses from the North Fiji and Lau back-arc basins  

SciTech Connect

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

425

Evaluation of several methods to measure volatility of motor fuels. Technical report  

SciTech Connect

The U.S. Environmental Protection Agency is proposing regulations to reduce the amount of hydrocarbons released to the atmosphere due to the evaporation of automotive fuels. The new regulations may define upper volatility limits for these fuels based on seasonal climatic patterns. Volatility of gasoline fuels is typically quantified by measurement of Reid vapor pressure (RVP). Although an established procedure exists for the assessment of the parameter (ASTM S 323), there is question as to the accuracy of the procedure when evaluating fuels with water-interactive constituents, e.g., alcohols and ethers. ASTM P 176 is a procedure that has been proposed as its replacement. It addresses the problem of water and is known as the dry version of ASTM D 323. The correlation study was designed to evaluate the proposed ASTM P 176 procedure for repeatability and reproducibility. The results of the study will help establish a basis for enforcement tolerance. Also evaluated was the equivalency of results from two commercial instruments versus those obtained by the traditional gauges and bath techniques.

Haubenstricker, M.E.; Scarbro, C.A.

1987-07-01T23:59:59.000Z

426

An assessment of methyl mercury and volatile mercury in land-applied sewage sludge  

SciTech Connect

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

427

Conditional correlations and volatility spillovers between crude oil and stock index returns  

Science Journals Connector (OSTI)

This paper investigates the conditional correlations and volatility spillovers between the crude oil and financial markets, based on crude oil returns and stock index returns. Daily returns from 2 January 1998 to 4 November 2009 of the crude oil spot, forward and futures prices from the WTI and Brent markets, and the FTSE100, NYSE, Dow Jones and S&P500 stock index returns, are analysed using the CCC model of Bollerslev (1990), VARMA-GARCH model of Ling and McAleer (2003), VARMA-AGARCH model of McAleer, Hoti, and Chan (2008), and DCC model of Engle (2002). Based on the CCC model, the estimates of conditional correlations for returns across markets are very low, and some are not statistically significant, which means the conditional shocks are correlated only in the same market and not across markets. However, the DCC estimates of the conditional correlations are always significant. This result makes it clear that the assumption of constant conditional correlations is not supported empirically. Surprisingly, the empirical results from the VARMA-GARCH and VARMA-AGARCH models provide little evidence of volatility spillovers between the crude oil and financial markets. The evidence of asymmetric effects of negative and positive shocks of equal magnitude on the conditional variances suggests that VARMA-AGARCH is superior to VARMA-GARCH and CCC.

Chia-Lin Chang; Michael McAleer; Roengchai Tansuchat

2013-01-01T23:59:59.000Z

428

Oxidation and Volatilization from Tantalum Alloy T-222 During Air Exposure  

SciTech Connect

Tantalum alloys are one of the refractory metals with renewed consideration for high temperatures in fusion reactor applications. Tantalum alloys perform well in protective environments but oxidized readily in gases containing higher oxygen levels. In addition, the radioactive isotope Ta-182 would be produced in tantalum and could be a significant contributor to dose if mobilized. Other isotopes of importance are produced from tungsten and hafnium. Mobilization of activated products during an accident with air ingress is therefore a safety issue. In this study, we measured the extent of oxidation and mobilization from tantalum alloy T-222 oxidized in flowing air between 500 and 1200 C. This alloy nominally contains 10 wt% tungsten, 2.5 wt% hafnium and 0.01 wt% carbon. We found that the mobilization of Ta and Hf was closely linked to the occurrence of oxide spalling. These elements showed no migration from the test chamber. Some W was mobilized by volatilization as evidenced by transport from the chamber. Tungsten volatilization could occur primarily during initial stages of oxidation before an oxide scale forms and impedes the process. The mobilization of Ta and W are presented in terms of the mass flux (g/m 2 -h) as a function of test temperature. These measurements along with specific designs, activation calculations, and accident scenarios provide information useful for dose calculations of future fusion devices.

Smolik, G.R.; Petti, D.A.; Sharpe, J.P.; Schuetz, S.T.

2000-10-31T23:59:59.000Z

429

Oxidation and Volatilization from Tantalum Alloy T-222 During Air Exposure  

SciTech Connect

Tantalum alloys are one of the refractory metals with renewed consideration for high temperatures in fusion reactor applications. Tantalum alloys perform well in protective environments but oxidized readily in gases containing higher oxygen levels. In addition, the radioactive isotope Ta-182 would be produced in tantalum and could be a significant contributor to dose if mobilized. Other isotopes of importance are produced from tungsten and hafnium. Mobilization of activated products during an accident with air ingress is therefore a safety issue. In this study, we measured the extent of oxidation and mobilization from tantalum alloy T-222 oxidized in flowing air between 500 and 1200°C. This alloy nominally contains 10 wt% tungsten, 2.5 wt% hafnium and 0.01 wt% carbon. We found that the mobilization of Ta and Hf was closely linked to the occurrence of oxide spalling. These elements showed no migration from the test chamber. Some W was mobilized by volatilization as evidenced by transport from the chamber. Tungsten volatilization could occur primarily during initial stages of oxidation before an oxide scale forms and impedes the process. The mobilization of Ta and W are presented in terms of the mass flux (g/m 2 -h) as a function of test temperature. These measurements along with specific designs, activation calculations, and accident scenarios provide information useful for dose calculations of future fusion devices

Smolik, Galen Richard; Petti, David Andrew; Sharpe, John Phillip; Schuetz, Stanley Thomas

2000-10-01T23:59:59.000Z

430

Organic Separation Test Results  

SciTech Connect

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

431

Modified Atmosphere Packaged Cheddar Cheese Shreds:? Influence of Fluorescent Light Exposure and Gas Type on Color and Production of Volatile Compounds  

Science Journals Connector (OSTI)

Modified Atmosphere Packaged Cheddar Cheese Shreds:? Influence of Fluorescent Light Exposure and Gas Type on Color and Production of Volatile Compounds ... The cheese block was shredded with a hand shredder. ... Aldehydes were the major constituent of the volatile fraction of shredded Cheddar cheese packaged under CO2. ...

Llori M. Colchin; Sandra L. Owens; Galina Lyubachevskaya; Elizabeth Boyle-Roden; Estelle Russek-Cohen; Scott A. Rankin

2001-04-13T23:59:59.000Z

432

Organization | Department of Energy  

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

Organization Organization Organization View Office of Management Organization Chart in PDF format. Office of Resource Management and Planning The Office of Resource Management and Planning provides the leadership and centralized management and direction of the Office of Management (MA) planning, budgeting, financial, human resources, and program execution processes; ensures that these processes are effective, and fully integrated and consistent with the Department-wide processes and requirements. Office of Aviation Management The Department of Energy, Aviation Program is the management function for all fleet aircraft and contracted aviation services for the Department. The program and its management personnel operate world-wide. To take advantage of the best communications and information services available, we have

433

Organic solar cell optimizations  

Science Journals Connector (OSTI)

This paper presents recent experimental and theoretical approaches for optimizing organic solar cell efficiencies in both space and energy/time...D/A...) blend film, a corresponding –DBAB- block copolymer film ex...

S. Sun; Z. Fan; Y. Wang; J. Haliburton

2005-03-01T23:59:59.000Z

434

Organization | Department of Energy  

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

Us » Organization Us » Organization Organization The organizational structure of the Office of Policy and International Affairs is as follows: *Office of Resource Management (PI-10) *Office of the Deputy Assistant Secretary for Eurasia, Africa and the Middle East (PI-20) *Office of the Deputy Assistant Secretary for Asia, Europe, and the Americas (PI-30) *Office of the Deputy Assistant Secretary for Policy Analysis (PI-40) *Office of the Deputy Assistant Secretary for Climate Change Policy and Technology (PI-50) The organizational chart can be found here. A brief synopsis of each sub-organization follows. Office of Resource Management (PI-10) The mission of the Office of Resource Management is to support the Office of Policy and International Affairs (PI) by: (1) minimizing the

435

Reformulated gasoline: Costs and refinery impacts  

SciTech Connect

Studies of reformulated gasoline (RFG) costs and refinery impacts have been performed with the Oak Ridge National Laboratory Refinery Yield Model (ORNL-RYM), a linear program which has been updated to blend gasolines to satisfy emissions constraints defined by preliminary complex emissions models. Policy makers may use the reformulation cost knee (the point at which costs start to rise sharply for incremental emissions control) to set emissions reduction targets, giving due consideration to the differences between model representations and actual refining operations. ORNL-RYM estimates that the reformulation cost knee for the US East Coast (PADD I) is about 15.2 cents per gallon with a 30 percent reduction of volatile organic compounds (VOCs). The estimated cost knee for the US Gulf Coast (PADD III) is about 5.5 cents per gallon with a VOC reduction of 35 percent. Reid vapor pressure (RVP) reduction is the dominant VOC reduction mechanism. Even with anti-dumping constraints, conventional gasoline appears to be an important sink which permits RFG to be blended with lower aromatics and sulfur contents in PADD III. In addition to the potentially large sensitivity of RFG production to different emissions models, RFG production is sensitive to the non-exhaust VOC share assumption for a particular VOC model. ORNL-RYM has also been used to estimate the sensitivity of RFG production to the cost of capital; to the RVP requirements for conventional gasoline; and to the percentage of RFG produced in a refining region.

Hadder, G.R.

1994-02-01T23:59:59.000Z

436

Geothermal Drilling Organization  

SciTech Connect

The Geothermal Drilling Organization (GDO), founded in 1982 as a joint Department of Energy (DOE)-Industry organization, develops and funds near-term technology development projects for reducing geothermal drilling costs. Sandia National Laboratories administers DOE funds to assist industry critical cost-shared projects and provides development support for each project. GDO assistance to industry is vital in developing products and procedures to lower drilling costs, in part, because the geothermal industry is small and represents a limited market.

Sattler, A.R.

1999-07-07T23:59:59.000Z

437

Thermal Desorption-Gas Chromatography or Gas Chromatography-Mass Spectrometry for Analysis of Semi-Volatile Compounds on Atmospheric Particulate Matters  

Science Journals Connector (OSTI)

Abstract A thermal desorption (TD) device was developed and coupled to gas chromatograph (GC) or gas chromatograph-mass spectrometer (GC-MS) for the qualitative and quantitative analysis of semi-volatile organic compounds on atmospheric particulate matters (PM). The TD was operated by direct heating and placed on the top of GC injector, leading to high heating rate and easy transfer of analytes to GC without re-focusing of analytes by cold trap. The materials used for supporting PM samples, desorption temperature and time, and types of sample injection were investigated for the detection of sixteen polycyclic aromatic hydrocarbons (PAHs) and nine n-alkanes. The limits of detection of the proposed TD-GC method were in the range of 0.014–0.094 ng for PAHs, and 0.016–0.026 ng for n-alkanes, with coefficients of correlation above 0.9975. The TD-GC method was applied to the determination of trace \\{PAHs\\} and n-alkanes on PM10 samples from three cities. The recoveries were in the range of 95%–135% (PAHs) and 95%–115% (n-alkanes). Finally, the TD was coupled to GC-MS for comparison of the contents of \\{PAHs\\} and n-alkanes on \\{PMx\\} with different particulate size (x = 10, 5, 2, 1, 0.5, 0.25, 0.1).

Hu MENG; Jing-Hong ZHAO; Chun-Feng DUAN; Liang HAO; Ya-Feng GUAN

2014-01-01T23:59:59.000Z

438

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

439

Manmade organic compounds in the surface waters of the United States: A review of current understanding  

SciTech Connect

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

440

Organic modification of carbon nanotubes  

Science Journals Connector (OSTI)

The organic modification of carbon nanotubes is a novel research field being developed ... and newest progress of organic modification of carbon nanotubes are reviewed from two aspects: organic covalent modificat...

Luqi Liu; Zhixin Guo; Liming Dai; Daoben Zhu

2002-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "vocs 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

Carbon Sequestration in Organic Farming  

Science Journals Connector (OSTI)

Organic farming has been developed as a new mode of farming vs. conventional farming. Evidence showed that organic farming management can well maintain the soil carbon up to 2–3 times higher in organic matter ...

Raymond Liu; Jianming M. Xu; C. Edward Clapp

2013-01-01T23:59:59.000Z

442

Volatility regimes, asymmetric basis effects and forecasting performance: An empirical investigation of the WTI crude oil futures market  

Science Journals Connector (OSTI)

This study employs a flexible regime-switching EGARCH model with Student-t distributed error terms to investigate whether volatility regimes and basis affect the behavior of crude oil futures returns, including the conditional mean, variance, skewness, kurtosis as well as the extent of heavy-tailedness. The study also examines whether volatility regimes and asymmetric basis effects can improve the forecasting accuracy. The main merit of the empirical model is that the basis effect is allowed to be asymmetric and to vary across volatility regimes. Empirical results suggest that the conditional mean and variance respond to the basis asymmetrically and nonlinearly, and that the responses of transition probabilities to the basis are symmetric. Furthermore, the conditional higher moments are sensitive to the absolute value of basis, and the heavy tailed characteristic can be greatly alleviated by taking into account the asymmetric basis effects and regime switches. Finally, the regime switches and asymmetric basis effects play decisive roles in forecasting return, volatility and tail distribution.

Kuang-Liang Chang

2012-01-01T23:59:59.000Z

443

Use of Low-Volatile Solid Fuels in a 100 kW Chemical-Looping Combustor  

Science Journals Connector (OSTI)

Swedish wood char and Mexican petcoke, both having low volatile content, were used as fuel. ... The carbon capture efficiency was high with wood char, but not as high with petcoke. ... Using petcoke as fuel, high gas conversion was achieved even when employing very high fuel power, 148 kW. ...

Carl Linderholm; Matthias Schmitz; Pavleta Knutsson; Malin Källén; Anders Lyngfelt

2014-08-21T23:59:59.000Z

444

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

445

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

446

An investigation of bentonite-organic complexes  

E-Print Network (OSTI)

measure of the total surface energy change of colloidal systems, such measurements would provide a means of characterizing the strength with -2- vhich adsorbed materials ore held as veil as the degree to which they satisfy colloidal surface forces... of the volatile com? pounds concerned plus the Integral heat of vaporization. If two or more adsorbed compounds were simultaneously volatilized from the clay surface the value obtained would represent the total heat change involved. r The differential thermal...

Seymour, Keith Goldin

2013-10-04T23:59:59.000Z

447

Explaining the convenience yield in the WTI crude oil market using realized volatility and jumps  

Science Journals Connector (OSTI)

Abstract In this paper, we first provide an empirical evidence of the existence of intraday jumps in the crude oil price series. We then show that these jumps, in conjunction with realized volatility measures, are important in modeling the convenience yield over the 2001–2010 period. Our empirical results indicate that lagged jump mean only explains around 16% of the weekly convenience yield. Our best specification, including variation in inventories, 8-week realized variance and the 250-day jump mean is able to explain around 61% of the weekly convenience yield. Importantly, our results are not driven by the simultaneous determination of the various variables at work as we only use lagged variables in all regressions.

Benoît Sévi

2015-01-01T23:59:59.000Z

448

Modelling futures price volatility in energy markets: Is there a role for financial speculation?  

Science Journals Connector (OSTI)

Abstract This paper models volatility in four energy futures markets, adopting GARCH models. The variance equation is enriched with alternative measures of speculation, based on CFTC data: the market share of non-commercial traders, the Working's T index, and the percentage of net long positions of non-commercials over total open interest in future markets. It also includes a control for market liquidity. We consider four energy commodities (light sweet crude oil, heating oil, gasoline and natural gas) over the period 2000–2014, analysed at weekly frequency. We find that speculation presents a negative and significant sign. The robustness exercise shows that: i) results remain unchanged through different model specifications (GARCH-in-mean, EGARCH, and TARCH); ii) results are robust to different specifications of the mean and variance equation.

Matteo Manera; Marcella Nicolini; Ilaria Vignati

2014-01-01T23:59:59.000Z

449

Evaluation of calcium chloride and ammonium thiosulfate as ammonia volatilization inhibitors for surface-applied urea  

E-Print Network (OSTI)

million tons Total fertilizer Total N NH4NOs Anhydrous NHs N solutions Urea 22. 7 24. 9 42. 5 52. 8 41. 8 50. 1 1. 6 2. 74 8. 60 11. 4 9. 13 11. 1 1. 12 1. 23 2. 80 2. 63 2. 15 2. 19 0. 35 0. 71 4. 02 5. 48 3. 84 4. 71 0. 21 0. 65 4. 11 6. 67 6...-12 10-12 10-12 0-2 12-14 0-2 120 144 96 24 36 24 261 3128 218 1878 225 3104 In general, three major effects were observed: 1) The lag phase of NHs volatilization was delayed or lengthened. 2) The maximum N loss rate occurred later...

Sloan, John J.

1989-01-01T23:59:59.000Z

450

Introduction to Organic Solar Cells  

Science Journals Connector (OSTI)

Organic solar cells (OSCs) have attracted strong attention in ... the basics of OSCs. The basics of organic semiconductors are first described. We then provide...

Dixon D. S. Fung; Wallace C. H. Choy

2013-01-01T23:59:59.000Z

451

Development and Application of A Membrane-Based Thermodenuder for Measurement of Volatile Particles Emitted by A Jet Turbine Engine  

SciTech Connect

Measurement of volatile particles emitted by modern jet engines is a daunting task. Besides the complexity in sampling jet aircraft exhaust, the main difficulty lies at how to faithfully capture the phase-partition dynamics of volatile particles as they travel downstream from the engine exhaust nozzle. As a result, the physico-chemical properties of the exhaust are also transformed. We have developed a sampling instrument that aims at enabling study of the phase-partition dynamics. The objective of this research project was to design and evaluate a new thermodenuder for performing phase separation of the engine-emitted volatile particles. The backbone of the new thermodenuder is a thin metallic membrane. The membrane enables extraction of molecules that can be thermally desorbed from the condensed particulate phases and collected for subsequent chemical analysis. Toward realization of the technique in the future field aircraft emissions measurement we tested this new thermo-denuding device using laboratory-generated particles that were made of non-volatile or semi-volatile chemicals. The particle penetration efficiency, a measure of the device performance, of this thermodenuder was found to be better than 99%. Results obtained from the tests executed at a number of operating temperature conditions show reasonably good thermal separation. We have scheduled to apply this new device to characterize emissions from a T63 turboshaft engine in the spring of 2010 and are expecting to show the engine results at the conference. The test results based on the laboratory-generated particles were encouraging for the intended application. With excellent particle transmission efficiency and an ability to simultaneously measure the composition in the gas and particle phases of the engine particles, we believe the new technology will make a great contribution to measurement research of engine emissions.

Cheng, Mengdawn [ORNL

2010-01-01T23:59:59.000Z

452

ARM - ARM Organization  

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

ARMARM Organization ARMARM Organization Laboratory Partners Nine DOE national laboratories share the responsibility of managing and operating the ARM Climate Research Facility. ARM Group Links Science Board SISC Charter Data Archive Data Management Facility Data Quality Program Engineering Support External Data Center ARM Organization The ARM Climate Research Facility operates field research sites around the world for global change research. Three primary locations-Southern Great Plains, Tropical Western Pacific, North Slope of Alaska-plus aircraft and the portable ARM Mobile Facilities-are heavily instrumented to collect massive amounts of atmospheric measurements needed to create data files. Scientists use these data to study the effects and interactions of sunlight, clouds, and radiant energy, as well as interdisciplinary research

453

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

454

JGI - Organization Structure  

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

Organization Structure Organization Structure clickable organizational chart Dan Rokhsar Genomic Technologies Department Nikos Kyrpides Jeremy Schmutz Plant Program Metagenome Program Igor Grigoriev Fungal Program LBNL Director P. Alivisatos Scientific Advisory Committee JGI Director, Eddy Rubin Deputy Director of Science Programs, Jim Bristow S. Canon NERSC JGI Support Team Ray Turner Operations Department Prokaryote Super Program Genomic Technologies Department Len Pennacchio Microbial Program Tanja Woyke Dan Rokhsar Eukaryote Super Program Susannah Tringe Chia-lin Wei Executive Management DOE JGI Director: Eddy Rubin Deputy of Science: Jim Bristow Deputy of Operations: Ray Turner Deputy of Genomic Technologies: Len Pennacchio Departments Operations Deputy of Operations Ray Turner

455

Sludge organics bioavailability  

SciTech Connect

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

456

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

457

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

458

Organic solvent topical report  

SciTech Connect

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

459

DESTRUCTION TECHNOLOGY DEMONSTRATION FOR ORGANICS IN TRANSURANIC WASTE  

SciTech Connect

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

460

Oligomeric Dithienopyrrole-Thienopyrrolodione (DTP-TPD) Donor-Acceptor Copolymer for Organic Photovoltaics: Preprint  

SciTech Connect

A new donor-acceptor copolymer system based upon a dithienopyrrole (DTP) donor moiety and a thienopyrrolodione (TPD) accepting moiety has been designed and synthesized for organic photovoltaic (OPV) applications. The TPD accepting moiety has recently gained significant attention in the OPV community and is being incorporated into a number of different polymer systems. In contrast, the DTP donor moiety has received only limited attention, likely due in part to synthetic difficulties relating to the monomer. In our hands, the bis(trimethyltin)-DTP monomer was indelibly contaminated with ~5% of the mono-destannylated DTP, which limited the Stille polymerization with the dibromo-TPD monomer (>99% pure) to produce material with Mn ~ 4130 g/mol (PDI = 1.10), corresponding to around eight repeat units. Despite this limitation, UV-visible absorption spectroscopy demonstrates strong absorption for this material with a band gap of ~1.6 eV. Cyclic voltammetry indicates a highest occupied molecular orbital (HOMO) energy level of -5.3 eV, which is much lower than calculations predicted. Initial bulk heterojunction OPV devices fabricated with the fullerene acceptor phenyl C61 butyric acid methyl ester (PCBM) exhibit Voc ~ 700 mV, which supports the deep HOMO value obtained from CV. These results suggest the promise of this copolymer system.

Hammond, S. R.; Braunecker, W.; Garcia, A.; Larsen, R.; Owczarczyk, Z.; Olson, D.; Ginley, D.

2011-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "vocs 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

On The Importance of Organic Oxygen for Understanding Organic Aerosol  

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

On The Importance of Organic Oxygen for Understanding Organic Aerosol On The Importance of Organic Oxygen for Understanding Organic Aerosol Particles Title On The Importance of Organic Oxygen for Understanding Organic Aerosol Particles Publication Type Journal Article Year of Publication 2006 Authors Pang, Yanbo, B. J. Turpin, and Lara A. Gundel Journal Journal of Aerosol Science and Technology Volume 40 Start Page Chapter Pagination 128-133 Abstract This study shows how aerosol organic oxygen data could provide new and independent information about organic aerosol mass, aqueous solubility of organic aerosols, formation of secondary organic aerosol (SOA) and the relative contributions of anthropogenic and biogenic sources. For more than two decades atmospheric aerosol organic mass concentration has usually been estimated by multiplying the measured carbon content by an assumed organic mass (OM)-to-organic carbon (OC ) factor of 1.4. However, this factor can vary from 1.0 to 2.5 depending on location. This great uncertainty about aerosol organic mass limits our understanding of the influence of organic aerosol on climate, visibility and health.New examination of organic aerosol speciation data shows that the oxygen content is the key factor responsible for the observed range in the OM-to-OC factor. When organic oxygen content is excluded, the ratio of non-oxygen organic mass to carbon mass varies very little across different environments (1.12 to 1.14). The non-oxygen-OM-to-non-oxygen OC factor for all studied sites (urban and non-urban) is 1.13± 0.02. The uncertainty becomes an order of magnitude smaller than the uncertainty in the best current estimates of organic mass to organic carbon ratios (1.6± 0.2 for urban and 2.1± 0.2 for non-urban areas). When aerosol organic oxygen data become available, organic aerosol mass can be quite accurately estimated using just OC and organic oxygen (OO) without the need to know whether the aerosol is fresh or aged. In addition, aerosol organic oxygen data will aid prediction of water solubility since compounds with OO-to-OC higher than 0.4 have water solubilities higher than 1g per 100 g water

462

Is Hale–Bopp A ‘Juvenile’ Comet – Study Of The Energy Balance To Explain The Vapor Flux Of Volatiles From The Surface  

Science Journals Connector (OSTI)

Sublimation of minor gases from ices inside of a porous comet ... input. Our model meant to describe the gas flux inside and out of the porous...2O and CO as the most abundant minor component of higher volatility...

J. Benkhoff; H. Rauer

463

Volatility of Mixtures of JP-8 with Biomass Derived Hydroprocessed Renewable Jet Fuels by the Composition Explicit Distillation Curve Method  

Science Journals Connector (OSTI)

Volatility of Mixtures of JP-8 with Biomass Derived Hydroprocessed Renewable Jet Fuels by the Composition Explicit Distillation Curve Method ... Energy Fuels, 2012, 26 (3), ... There are many reasons for this, the most important of which are guarding against potential supply disruptions, overcoming the dependence on foreign sources of petroleum, overcoming the vulnerability of large centralized refineries (to both weather events and terrorist acts), and mitigation of the rising costs of current fuel streams. ...

Jean Van Buren; Kathryn Abel; Tara M. Lovestead; Thomas J. Bruno

2012-02-28T23:59:59.000Z

464

The Pond 2 selenium volatilization study: A synthesis of five years of experimental results, 1990--1995  

SciTech Connect

Microbial volatilization is a potential remedial measure to decrease the selenium inventory in Kesterson Reservoir soils. Past studies in both the field and the laboratory suggest that a significant percentage of the selenium inventory may be removed in this fashion. The objectives of this study include the quantification of selenium losses and a test of a pilot-scale design which in the future may be used in other parts of the Reservoir.

Zawislanski, P.T. [Lawrence Berkeley National Lab., CA (United States). Earth Sciences Div.; Jayaweera, G.R.; Biggar, J.W.; Wu, L. [Univ. of California, Davis, CA (United States); Frankenberger, W.T. [Univ. of California, Riverside, CA (United States). Dept. of Soil and Environmental Sciences

1996-02-01T23:59:59.000Z

465

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

E-Print Network (OSTI)

in Place Volumes and Liquid Recovery for Volatile Oil and Gas Condensate Reservoirs. (December 2000) Juan Manual Jaramillo Arias, B. S. , Universidad de America; B. S. , Universidad Nacional de Colombia Chair of Advisory Committee: Dr. Maria A. Barrufet... Reservoir Performance 2. 2 Equation of State Review. . 2. 3 Peng Robinson Equation of State (PR EOS). 2. 4 Vapor Liquid Equilibria. . 2. 5 Volume Translation. 2. 6 Pseudoization or Lumping. 2. 7 Heavy Fraction Characterization. . 2. 8 Compositional...

Jaramillo Arias, Juan Manuel

2012-06-07T23:59:59.000Z

466

Functional Integrative Levels in the Human Interactome Recapitulate Organ Organization  

E-Print Network (OSTI)

Functional Integrative Levels in the Human Interactome Recapitulate Organ Organization Ouissem, Marseille, France, 3 Institut Pasteur, Tunis, Tunisia, 4 Bioinformatics and Functional Genomics Research spatio-temporal information by construction. However, the specialized functions of the differentiated

Boyer, Edmond

467

Causality and volatility spillovers among petroleum prices of WTI, gasoline and heating oil in different locations  

Science Journals Connector (OSTI)

This paper examines the time series properties of daily spot and futures prices for three petroleum types traded at five commodity centers within and outside the United States. Examining five combinations of the spot and futures prices by petroleum type and trading center, the cointegration tests of each of these five groups suggest that spot and futures contracts offer little room for long-run commodity portfolio diversification. In the West Texas Intermediate (WTI) crude-oil group, the VEC model indicates that the New York Mercantile Exchange (NYMEX) 1-month futures price has the upper hand in terms of directional causality and volatility spillovers. In the NYMEX gasoline system, there are bi-directional causality relationships among all the gasoline spot and futures prices, but the spot price produces the greatest spillover. In the NYMEX heating oil system, information transmission and predictability among the spot, 1- and 3-month futures are found to be particularly strong and significant. In the international gasoline spot market, contrary to the world crude-oil market, there is no apparent world gasoline spot leader for the gasoline spot prices.

Shawkat Hammoudeh; Huimin Li; Bang Jeon

2003-01-01T23:59:59.000Z

468

LastingNVCache: A Technique for Improving the Lifetime of Non-volatile Caches  

SciTech Connect

Use of NVM (Non-volatile memory) devices such as ReRAM (resistive RAM) and STT-RAM (spin transfer torque RAM) for designing on-chip caches holds the promise of providing a high-density, low-leakage alternative to SRAM. However, low write endurance of NVMs, along with the write-variation introduced by existing cache management schemes may significantly limit the lifetime of NVM caches. We present LastingNVCache, a technique for improving lifetime of NVM caches by mitigating the intra-set write variation. LastingNVCache works on the key idea that by periodically flushing a frequently-written data-item, the next time the block can be made to load into a cold block in the set. Through this, the future writes to that data-item can be redirected from a hot block to a cold block, which leads to improvement in the cache lifetime. Microarchitectural simulations have shown that LastingNVCache provides 6.36X, 9.79X, and 10.94X improvement in lifetime for single, dual and quad-core systems. Also, its implementation overhead is small and it outperforms a recently proposed technique for improving lifetime of NVM caches.

Mittal, Sparsh [ORNL] [ORNL; Vetter, Jeffrey S [ORNL] [ORNL; Li, Dong [ORNL] [ORNL

2014-01-01T23:59:59.000Z

469

A method to characterise the volatile release of solid recovered fuels (SRF)  

Science Journals Connector (OSTI)

A method was developed and successfully applied to characterise the de-volatilisation process of solid recovered fuels (SRF). Following the definitions of the European initiative on SRF standardisation CEN/TC 343, this kind of fuels have to be produced from non-hazardous bio-residues, mixed- and mono-waste streams, and they are designated to be used either in mono- or co-combustion processes. Consequently, SRF are – in most cases – heterogeneous fuel mixtures. The de-volatilisation process was identified as highly relevant due to the nature of fuel: most SRF components do not evolve a char comparable to coal. Furthermore, large particle sizes do not allow the application of common approaches to determine kinetic parameters. The method presented in this paper relies on thermo-gravimetric analysis (TGA). By successful combination with other well-established analytical procedures, the obtainable information towards the de-volatilisation process was largely improved. The method allows a quantification of energy and elemental distribution between volatiles and char during the de-volatilisation process in relation to the particle temperature. The data can be used to compare SRF or SRF components with other “known” fuels such as lignite and biomass. Moreover, the data is suitable as input data for combustion models. Focus of this paper is the analytical procedure including the required calculations. In addition, first results are presented and some ideas towards the use of the results are discussed.

Th. Hilber; M. Martensen; J. Maier; G. Scheffknecht

2007-01-01T23:59:59.000Z

470

Estimating Persistent Mass Flux of Volatile Contaminants from the Vadose Zone to Ground Water  

SciTech Connect

Contaminants may persist for long time periods within low permeability portions of the vadose zone where they cannot be effectively treated and are a potential continuing source of contamination to groundwater. Setting appropriate vadose zone remediation goals requires evaluating these persistent sources in terms of their impact on meeting groundwater remediation goals. One-dimensional approaches for estimating transport of volatile contaminants in the vadose zone are considered and compared to a one-dimensional flux-continuity-based assessment of vapor-phase contaminant movement from the vadose zone to the groundwater. The flux-continuity-based assessment demonstrates that the ability of the groundwater to move contaminant away from the water table controls the vapor-phase mass flux from the vadose zone across the water table. Limitations of the one-dimensional approaches are then discussed with respect to the need for further method development and application of two- or three-dimensional numerical modeling. The carbon tetrachloride (CT) plume at the U.S. Department of Energy Hanford Site is used as an example of a site where persistent vadose zone contamination needs to be considered in the context of groundwater remediation.

Truex, Michael J.; Oostrom, Martinus; Brusseau, Mark

2009-05-04T23:59:59.000Z

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

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

Effect of Oil Price Volatility on Tunisian Stock Market at Sector-level and Effectiveness of Hedging Strategy  

Science Journals Connector (OSTI)

Abstract In this work, our objective is to study in a first step links and interaction between oil and stock markets in Tunisia in terms of volatility at the sector-level, and then in a second step to determine the best hedging strategy for oil-stock portfolio against the risk of negative variation in stock market prices. Our methodology consist to model the data by a bivariate GARCH model to capture the effect in terms of volatility in the variation of the oil price on the different sector index, and to use the conditional variances and conditional correlation to calculate the hedging ratio and determinate the best hedging strategy. The empirical results indicate that the majority of relationships are unidirectional from the oil market to Tunisian stock market, and the conditional variance of a stock sector returns is affected not only by the volatility surprises of the stock market, but also by those of oil market. The model GARCH-BEKK is more effective than the others versions to minimize the risk of oil-stock portfolio.

Wajdi Hamma; Anis Jarboui; Ahmed Ghorbel

2014-01-01T23:59:59.000Z

473

Production of methane gas from organic fraction municipal solid waste (OFMSW) via anaerobic process: application methodology for the Malaysian condition  

Science Journals Connector (OSTI)

Solid waste management in Malaysia is confronted with many problems, including low collection coverage, irregular collection services, inadequate equipment used for waste collection, crude open dumping and burning without air and water pollution control systems, inadequate legal provisions and resource constraints. These problems have various effects on the development of the solid waste management system in Malaysia. Anaerobic digestion has been suggested as an alternative method for removing high concentrations of organic waste. In this study, two types of anaerobic digesters which are Simulated Landfill Bioreactor (SLBR) and Anaerobic Solid-Liquid (ASL) reactor were proposed. The reactors were operated at a temperature 60°C, analysed for biogas production and volatile fatty acid.

Irnis Azura Zakarya; Ismail Abustan; Norli Ismail; Mohd Suffian Yusoff

2013-01-01T23:59:59.000Z

474

Organic Solar Cells — A Survey  

Science Journals Connector (OSTI)

The objective of this study was to examine in some detail the question of efficient organic solar cells. The scientific-technical situation concerning organic solar cells is highly confusing and unsatisfactory. I...

Dieter Bonnet; Jürgen Volkheimer

1991-01-01T23:59:59.000Z

475

11, 26552696, 2011 Organic functional  

E-Print Network (OSTI)

) name biomass burning (BB) as the largest (42%) combustion source of pri- mary organic carbon fossil-fuel combustion and burning and non-burning forest sources of the measured organic aerosol. The OM

Russell, Lynn

476

Movement of VOCs through the vadose zone  

E-Print Network (OSTI)

were classified into steady-state and transient methods. In the first type, difFusion coefficients were determined under steady state conditions. The second type was categorized into open tube (OTM) and closed tube methods (CTM), both measuring dif...Fusion coeflicient in the transient state. In the OTM, one end of the difFusion chamber was open to the atmosphere or to a continuous source. The CTM had the soil medium open at the end chambers but the whole system was isolated from the atmosphere. CTM gave...

Patel, Pinakin K.

1989-01-01T23:59:59.000Z

477

Brayton Cycle Heat Pump for VOC Control  

E-Print Network (OSTI)

of this technology is particularly suitable for recovery of CFCs, water miscible solvents, and halogenated hydrocarbons. The process can be directly or indirectly coupled to various adsorbent based solvent concentrators....

Kovach, J. L.

478

Pilot tests guide VOC control choice  

SciTech Connect

On-site pilot testing determines proper operating conditions for catalysts of pollution control equipment at optimum performance levels while demonstrating their ability to reduce emissions, odors and opacity from stack gases in manufacturing processes. Examples are provided ofr the catalytic control of emissions from coffee roasting, carbon fiber manufacturing, and can coating. Portable oxidizer units are employed in the pilot testing.

Van Benschoten, D.M. [Johnson Matthey Environmental Products, Wayne, PA (United States)

1993-10-01T23:59:59.000Z

479

8, 1182111851, 2008 VOCs during 2006  

E-Print Network (OSTI)

, Texas 77843, TX, USA 2 Molina Center for Energy and the Environment, La Jolla, California, CA, USA * now Northeast of downtown Mexico City as part of the Megacity Initiative ­ Local and Global Research the probability of significant industrial sources of the two compounds in the15 region. Wind fields during those

Boyer, Edmond

480

Organization and Functions  

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

Working to Ensure the Safety and Security of Hazardous Material Shipments Working to Ensure the Safety and Security of Hazardous Material Shipments Organization and Functions Mission Unit EM-30 Deputy Assistant Secretary/ADAS Waste Management Director Office of Packaging and Transportation EM-33 Regulations & Standards Support * ANSI * ASME/ ASTM * DHS * DOD FEMA * FMCSA * FRA * IAEA * ICAO * IMO * NRC * Orders * PHMSA TSA * UN TDG SCOE Packaging Certification * CoCs for Type B/AF Packages * DOE Exemptions * DOT Special Permits & COCA * QA * RAMPAC * SCALE * Technical Assistance * Training Program & Site Support * ATMS * EFCOG * EIS Reviews * IPT * Load Securement Guide * PMC * RADCALC * RADTRAN * Secure transport * Technical assistance * Tenders * TMC * TRAGIS

Note: This page contains sample records for the topic "vocs 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

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

482

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.

483

Organic matter in ancient meteorites  

Science Journals Connector (OSTI)

......asteroids. 3: Organic matter in...lead to the production of hydroxy...useful in cell membranes...a part in cell membranes...meteorite organic matter because...form the solar system bequeathed...the early solar system and organic-inorganic......

Mark A Sephton

2004-04-01T23:59:59.000Z

484

Pyrolysis Autoclave Technology Demonstration Program for Treatment of DOE Solidified Organic Wastes  

SciTech Connect

In the summer of 2005, MSE Technologies Applications, Inc. (MSE) and THOR Treatment Technologies, LLC (TTT) conducted a demonstration test of the Thermal Organic Reduction (THOR{sup sm}) in-drum pyrolysis autoclave system under contract to the Department of Energy. The purpose of the test was to demonstrate that the THOR{sup sm} pyrolysis autoclave system could successfully treat solidified organic waste to remove organics from the waste drums. The target waste was created at Rocky Flats and currently resides at the Radioactive Waste Management Complex (RWMC) at the Idaho National Laboratory (INL). Removing the organics from these drums would allow them to be shipped to the Waste Isolation Pilot Plant for disposal. Two drums of simulated organic setup waste were successfully treated. The simulated waste was virtually identical to the expected waste except for the absence of radioactive components. The simulated waste included carbon tetrachloride, trichloroethylene, perchloroethylene, Texaco Regal oil, and other organics mixed with calcium silicate and Portland cement stabilization agents. The two-stage process consisted of the THOR{sup sm} electrically heated pyrolysis autoclave followed by the MSE off gas treatment system. The treatment resulted in a final waste composition that meets the requirements for WIPP transportation and disposal. There were no detectable volatile organic compounds in the treated solid residues. The destruction and removal efficiency (DRE) for total organics in the two drums ranged from >99.999% to >99.9999%. The operation of the process proved to be easily controllable using the pyrolysis autoclave heaters. Complete treatment of a fully loaded surrogate waste drum including heat-up and cooldown took place over a two-day period. This paper discusses the results of the successful pyrolysis autoclave demonstration testing. (authors)

Roesener, W.S.; Mason, J.B.; Ryan, K. [THOR Treatment Technologies, LLC, 7800 E Union Ave, Denver, CO 80237 (United States); Bryson, S. [MSE Technologies Applications, Inc., 200 Technology Way, Butte, MT 59702 (United States); Eldredge, H.B. [Eldredge Engineering, P.A., 1090 Blue Ridge Dr., Idaho Falls, ID 83402 (United States)

2006-07-01T23:59:59.000Z

485

Organ Donation after Cardiac Death  

Science Journals Connector (OSTI)

...the brain stem). Organs were recovered from 645 donors after cardiac death in 2006, as compared with 189 in 2002; these donors accounted for 8% of all deceased donors in 2006 (see bar graph). At the Organ Procurement Organization at the University of Wisconsin, the New England Organ Bank in the Boston... A rapid increase in the rate of organ recovery from deceased persons has occurred in the category of donation after “cardiac death.” Dr. Robert Steinbrook writes that these donations remain troubling to some and are not as widely accepted as donations ...

Steinbrook R.

2007-07-19T23:59:59.000Z

486

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

487

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

488

Ventilation Control of Volatile Organic Compounds in New U.S. Homes: Results of a Controlled Field Study in Nine Residential Units  

E-Print Network (OSTI)

Air infiltration measurements in a home using a convenientaffecting these levels in homes in Perth, Western Australia.formaldehyde levels in mobile homes. Symposium Proceedings:

Willem, Henry

2014-01-01T23:59:59.000Z

489

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 engines Aftertreatment technology Diesel particulate filter Chemical speciation a b s t r a c t To meet increasingly stringent regulations for diesel engines, technologies such as combustion strategies

Wu, Mingshen

490

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)

. Proprietary Dow research data is used in the selection of the optimum adsorbent mixture. The adsorption and desorption steps are batch processes that occur simultaneously in alternating twin beds to maintain steady state operation of the SORBATHENE unit...

Hall, T. L.; Larrinaga, L.

491

Development and Field-Scale Optimization of a Honeycomb Zeolite Rotor Concentrator/Recuperative Oxidizer for the Abatement of Volatile Organic Carbons from Semiconductor Industry  

Science Journals Connector (OSTI)

Also the developed rotor performance’s was evaluated in the field; (2) Direct Fired Thermal Oxidizer (DFTO), Recuperative Oxidizer (RO), Regenerative Thermal Oxidizer (RTO) and Regenerative Catalytic oxidizer (RCO) are the available incinerators and the RO was selected as the oxidizer in this work; (3) The overall performance of the developed rotor/oxidizer was explored in a field scale under varying conditions; (4) The energy saving strategy was fulfilled by reducing heat loss from the oxidizer and recovering heat from the exhaust gas. ... The available types of oxidizers include Direct Fired Thermal Oxidizer (DFTO), Recuperative Oxidizer (RO), Regenerative Thermal Oxidizer (RTO) and Regenerative Catalytic oxidizer (RCO). ... cost models were derived for recuperative thermal (TO) and regenerative thermal oxidizers (RTO). ...

Ji Yang; Yufeng Chen; Limei Cao; Yuling Guo; Jinping Jia

2011-11-17T23:59:59.000Z

492

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)

carbon monoxide (Table 3). Propane, n- butane and i- butaneof vehicle traffic and liquid propane gas (LPG) emissionshicles, the use of liquid propane gas and the production of

2011-01-01T23:59:59.000Z

493

Adsorption of Volatile Organic Compounds in Pillared Clays:? Estimation of the Separation Factor by a Method Derived from the Dubinin?Radushkevich Equation  

Science Journals Connector (OSTI)

Figure 1 Adsorption isotherms (nitrogen at 77 K and other vapors at 298 K) in the aluminum oxide pillared clay (Al-PILC). ... Figure 2 Adsorption isotherms (nitrogen at 77 K and other vapors at 298 K) in the zirconium oxide pillared clay (Zr-PILC). ... Figure 3 Separation factors versus coverage for the aluminum oxide pillared clay (Al-PILC) with the values of ? estimated from the parachors (closed symbols) or the molar polarizations (open symbols) using benzene (squares) or carbon tetrachloride (triangles) as standard vapor. ...

Joăo Pires; Moisés L. Pinto; Ana Carvalho; M. B. de Carvalho

2003-08-16T23:59:59.000Z

494

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

495

Evaluation of Ultra-Violet Photocatalytic Oxidation (UVPCO) for Indoor Air Applications: Conversion of Volatile Organic Compounds at Low Part-per-Billion Concentrations  

E-Print Network (OSTI)

efficiency particle filter in the HVAC system. The particlehigh efficiency filters in a building’s HVAC system andHVAC applications, assuming that the velocity through the UVPCO device will correspond to the typical value for particle filters

Hodgson, Alfred T.; Sullivan, Douglas P.; Fisk, William J.

2005-01-01T23:59:59.000Z

496

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

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

497

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...

498

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

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