854 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Volatile Matter"  
Results: 1 - 24 next
open access

Survey of selected agencies conducted to determine the extent to which the nation's coals are adequately characterized

Description: A survey was conducted to determine the extent to which the nation's coals were adequately characterized. Questionnaires were sent to 81 agencies in the coal community selected to form a representative cross section of the organizations concerned with coal characterization. Fifty-nine completed questionnaires were received. Respondents included representatives of the agencies with the longest experience in characterization and those in the best position to know the status of our knowledge … more
Date: October 1, 1977
Creator: Hower, J. M.; Davis, A.; Dolsen, C. P. & Spackman, W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The IGAC activity for the development of global emissions inventories: Description and initial results

Description: Modeling assessments of the atmospheric chemistry, air quality and climatic conditions of the past, present and future require as input inventories of emissions of the appropriate chemical species constructed on appropriate spatial and temporal scales. The task of the Global Emissions Inventories Activity (GEIA) of the International Global Atmospheric Chemistry Project (IGAC) is the production of global inventories suitable for a range of research applications. Current GEIA programs are general… more
Date: February 1, 1992
Creator: Benkovitz, C.M. (Brookhaven National Lab., Upton, NY (United States)) & Graedel, T.E. (AT and T Bell Labs., Murray Hill, NJ (United States))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Assessment and development of an advanced heat pump for recovery of volatile organic compounds

Description: This report documents Phase 1 of a project conducted by Mechanical Technology Incorporated (MTI) for the assessment and development of an advanced heat pump for recovery of VOC solvents from process gas streams. In Phase 1, MTI has evaluated solvent recovery applications within New York State (NYS), identified host sites willing to implement their application, and conducted a preliminary design of the equipment required. The design and applications were evaluated for technical and economic feas… more
Date: June 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Variations in volatiles in magma bodies based on studies of melt inclusions

Description: Knowledge of volatile concentrations in magmas are important in the prediction of explosive volcanism, and contribute to the understanding of the carbon dioxide budget of the atmosphere. Some important variables that are controlled by volatiles are: crystallization temperature of phases, composition of liquids minimum, and viscosity. Volatiles are also catalysts for reactions.
Date: June 15, 1989
Creator: Vogel, T. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MHD power generation research, development and engineering. Quarterly progress report, October-December 1979

Description: Progress is reported on the following tasks: characterization of coal for open-cycle MHD power generation systems; compressive creep and strength studies of MHD preheater materials; preparation of coals for utilization in direct coal-fired MHD generation; characterization of volatile matter in coal; MHD materials evaluation; operability of the Moderate Temperature Slag Flow Facility; slag-seed equilibria and separations related to the MHD system; thermionic emission of coal and electrode materi… more
Date: January 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Field evaluation of ground water sampling devices for volatile organic compounds

Description: Previous studies conducted under laboratory conditions demonstrated that the type of device used to sample ground water contaminated with volatile organic compounds can significantly influence and analytical results. The purpose of this study was to evaluate, under field conditions, both commercial and developmental ground water sampling devices as part of an ongoing ground water contamination investigation and remediation program at the Savannah River Plant (SRP). Ground water samples were col… more
Date: January 1, 1986
Creator: Muska, C. F.; Colven, W. P.; Jones, V. D.; Scogin, J. T.; Looney, B. B. & Price, V. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Volatile production during preignition heating. Final technical report, 15 September 1980-30 September 1982

Description: Pulverized coal particles, in a flowing inert nitrogen stream, have been heated by high power Carbon Dioxide Laser. The consequence of such an irradiation have proved to be both novel and surprising as a result of the rapid quenching of primary coal products. It ahs been found that the gas phase yield from such heating (typically, temperatures in excess of 1400 K at rates approx. 2 x 10/sup 5/ K/s) is very small (< 0.2 percent of coal carbon and hydrogen). Analysis of the solid residue has show… more
Date: October 1, 1983
Creator: Ballantyne, A.; Chou, H.; Flusberg, A.; Neoh, K.; Orozco, N. & Stickler, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Large-scale high-efficiency air stripper and recovery well network for removing volatile organic chlorocarbons from ground water

Description: The Savannah River Plant (SRP) produces special nuclear materials for the US Government. Since 1958, chemical wastes generated by an aluminum forming/metal finishing process used to manufacture fuel and target assemblies were discharged to a settling basin. This process waste stream contained acids, alkalis, metals, and chlorinated degreasing solvents. In 1981, these solvents, specifically trichloroethylene and tetrachloroethylene, were discovered in monitor wells near the settling basin. A mon… more
Date: May 1, 1986
Creator: Boone, L F; Lorfenz, R; Muska, C F & Steele, J L
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Smart'' pump and treat

Description: Lawrence Livermore National Laboratory (LLNL) is approaching the final phase of the Superfund decision-making process for site restoration and will soon initiate full scale cleanup. Despite some well-publicized failings of the pump and treat approach, we have concluded that intelligent application of this strategy if the best choice for ground water restoration at LLNL. Our proposed approach differs sufficiently from the pump and treat methods implemented at other sites that we call it smart'' … more
Date: September 1, 1991
Creator: Isherwood, W.; Rice, D. Jr.; Ziagos, J. (Lawrence Livermore National Lab., CA (United States)) & Nichols, E. (Weiss Associates, Emeryville, CA (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

X-ray diffraction and scattering studies of coal constituents. Final technical report, January 1-December 31, 1983

Description: The general objective of this work has been to use x-ray diffraction and scattering to examine whole coals, coal macerals and minerals in order to perform the following studies: (1) to identify and explain differences in vitrinites and framboids from various coals; (2) to correlate differences with basic coal compositions and properties; and (3) to determine the systematic variability in the micro compositional variation of macerals. The accomplishments have been: (a) the development of the Fou… more
Date: March 15, 1984
Creator: Pavlovic, A. S. & Renton, J. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nuclear waste processing based on FOOF and KrF sub 2

Description: A class of oxygen fluoride compounds and krypton difluoride show great promise in recovering and purifying plutonium and other actinides from nuclear waste and residues. Since 1983, a significant effort has been expended in three main areas of research; one area is the characterization of the reactive species and the fluorination reaction chemistry with various actinides. The second area is to develop efficient production methods for the active chemicals. The third area is actually in demonstra… more
Date: January 1, 1991
Creator: Kim, K. C. & Blum, T. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Bromoform production in tropical open-ocean waters: OTEC chlorination

Description: The bromoform, and other volatile organics produced while chlorinating both the evaporator and condenser seawater during operation of the one megawatt (1 MW) OTEC-1 test facility are reported. Although many halogenated compounds might be produced as a result of chlorination, the quantitative analyses in this study focused on volatile EPA priority pollutants. Bromoform is the compound specifically recognized as a potential pollutant. Its concentration may be indicative of other halogenated speci… more
Date: September 1, 1981
Creator: Hartwig, E.O. & Valentine, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Oil-shale-retorting and combustion system. [DOE patent application]

Description: The present invention is directed to the extraction of energy values from oil shale containing considerable concentrations of calcium carbonate in an efficient manner. The volatiles are separated from the oil shale in a retorting zone of a fluidized bed where the temperature and the concentration of oxygen are maintained at sufficiently low levels so that the volatiles are extracted from the oil shale with minimal combustion of the volatiles and with minimal calcination of the calcium carbonate… more
Date: August 28, 1981
Creator: Pitrolo, Augustine A.; Mei, Joseph S. & Shang, Jerry Y.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Inhalation developmental toxicology studies: Teratology study of n-hexane in rats: Final report

Description: The straight chain hydrocarbon, n-hexane, is a volatile, ubiquitous solvent used in industrial, academic, and smaller commercial environments. The significant opportunity for women of child-bearing age to be exposed to this chemical prompted the undertaking of a study to assess the developmental toxicity of n-hexane in an animal model. Timed-pregnant (30 animals per group) and virgin (10 animals per group) Sprague-Dawley rats were exposed to 0 (filtered air), 200, 1000, and 5000 ppM n-hexane (9… more
Date: December 1, 1987
Creator: Mast, T.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced heat pump for the recovery of volatile organic compounds

Description: Emissions of Volatile Organic Compounds (VOC) from stationary industrial and commercial sources represent a substantial portion of the total US VOC emissions. The Toxic-Release Inventory'' of The US Environmental Protection Agency estimates this to be at about 3 billion pounds per year (1987 estimates). The majority of these VOC emissions are from coating processes, cleaning processes, polymer production, fuel production and distribution, foam blowing,refrigerant production, and wood products p… more
Date: March 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Systematic selection of off-gas treatment at the Savannah River Site

Description: At the Savannah River Site (SRS), from 1958--1985, effluent waste from the reactor fuel and target rod fabrication area (M-Area) was discharged to a settling basin. In 1981, monitoring wells detected groundwater contamination, specifically trichloroethylene and tetrachloroethylene, in the immediate vicinity of the basin. Under the auspices of Resource Conservation and Recovery Act (RCRA) the M-Area contamination must be addressed by a corrective action program until the volatile organic compoun… more
Date: January 1, 1992
Creator: McKillip, S.T. & Rehder, T.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Low-rank coal thermal properties and diffusivity: Final report

Description: This project developed techniques for measuring thermal properties and mass diffusivities of low-rank coals and coal powders. Using the concept of volume averaging, predictive models have been developed for these porous media properties. The Hot Wire Method was used for simultaneously measuring the thermal conductivity and thermal diffusivity of both consolidated and unconsolidated low-rank coals. A new computer-interfaced experiment is presented and sample container designs developed for both … more
Date: June 1987
Creator: Ramirez, W.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Full scale field test of the in situ air stripping process at the Savannah River integrated demonstration test site

Description: Under sponsorship from the US Department of Energy, technical personnel from the Savannah River Laboratory (SRL) and other DOE laboratories, universities and private industry have completed a full scale demonstration of environmental remediation using horizontal wells. This demonstration was performed as Phase I of an Integrated Demonstration Project designed to evaluate innovative remediation technologies for environmental restoration of sites contaminated with organic contaminants. The demons… more
Date: June 29, 1991
Creator: Looney, B. B.; Hazen, T. C.; Kaback, D. S. & Eddy, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

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

Description: 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 Offi… more
Date: August 1, 1990
Creator: Kohout, E. J.; Miller, D. J.; Nieves, L. A.; Rothman, D. S.; Saricks, C. L.; Stodolsky, F. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fixed-bed gasification research using US coals. Volume 18. Program data summary and correlations. [C/sub 2/ and C/sub 3/ hydrocarbons]

Description: A single-staged, fixed-bed, Wellman-Galusha gasifier coupled with a hot, raw gas combustion system and scrubber has been used to gasify numerous coals from throughout the United States. The gasification test program is organized as a cooperative effort by private industrial participants and government agencies. The consortium of participants is organized under the Mining and Industrial Fuel Gas Group (MIFGa). This report is the eighteenth volume in a series of reports describing the atmospheric… more
Date: December 1, 1985
Creator: Thimsen, D.; Maurer, R. E.; Lannto, O.; Pui, D. & Yeh, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of a rapid headspace analysis method for analysis of volatile constituents in soils and sediments

Description: Contamination of the subsurface by volatile organic solvents is a common and significant environmental problem. A critical component of developing an accurate assessment of a site contaminated by these solvents is the acquisition of closely spaced, high quality contaminant concentration data. Many volatile organics are relatively mobile in the subsurface, requiring characterization of both horizontal and vertical contaminant migration. The volatile nature of these analyses, combined with the co… more
Date: January 1, 1991
Creator: Sims, W. R.; Looney, B. B. & Eddy, C. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Improved pyrolysis submodel for the Wen Fixed-Bed Gasifier Program

Description: A generalized model for devolatilization of large coal particles typically encountered in a fixed or moving bed gasifier has been developed. Two models were developed, one which does not consider diffusion of the volatile matter from the coal during devolatilization and the other which does consider diffusion of volatile species through the coal matrix. Both models predict a time-temperature history of the particle in a convective heat transfer environment.
Date: April 1991
Creator: Adesanya, B. A. & Ruffin, Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen