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Chemical data bases for the Multimedia Environmental Pollutant Assessment System (MEPAS)

Description: The Multimedia Environmental Pollutant Assessment System (MEPAS) was developed by Pacific Northwest Laboratory for the US Department of Energy (DOE) Office of Environment, Safety, and Health. MEPAS, an enhancement of the Remedial Action Priority System, is a set of computer programs used to prioritize hazardous, radioactive, and mixed-waste sites based on their potential hazard to public health. MEPAS employs a simplified contaminant-transport and exposure model. It incorporates an interactive … more
Date: December 1989
Creator: Strenge, D. L. & Peterson, S. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mathematical simulation of sediment and radionuclide transport in estuaries

Description: The finite element model LFESCOT (Flow, Energy, Salinity, Sediment and Contaminant Transport Model) was synthesized under this study to simulate radionuclide transport in estuaries to obtain accurate radionuclide distributions which are affected by these factors: time variance, three-dimensional flow, temperature, salinity, and sediments. Because sediment transport and radionuclide adsorption/desorption depend strongly on sizes or types of sediments, FLESCOT simulates sediment and a sediment-so… more
Date: November 1, 1982
Creator: Onishi, Y. & Trent, D.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Removal of radioactive contaminants from aqueous laboratory wastes by chemical treatment

Description: The following conclusions can be drawn from the studies reported. The presence of suspended matter (i.e., clay) in the spiked tapwater solution improved the plutonium removals; however, the addition of clinoptilolite to the plant raw feed did not provide any noticeable improvement for plutonium removal. The addition of powdered clinoptilolite to the regular treatment in the plant significantly improved the removal of /sup 137/Cs, but had little effect on plutonium or /sup 90/Sr removal. Magnesi… more
Date: January 1, 1976
Creator: Drago, J. A. & Buchholz, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of Models for Use in the Assessment of Waste Repository Performance

Description: Any repository suitable for the disposal of radioactive waste comprises a combination of various man-made and natural barriers which aim to prevent transfer of the radionuclides from the canister to the external environment. Our group has developed the techniques needed to model the equilibrium chemistry of complex multicomponent rock/water systems over a range of ionic strengths and temperatures. These models, show remarkable agreement with field measurements when applied to natural systems. T… more
Date: September 30, 1989
Creator: Dickson, A. G. & Weare, J. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Waste/Rock Interactions Technology Program: the status of radionuclide sorption-desorption studies performed by the WRIT program

Description: The most credible means for radionuclides disposed as solid wastes in deep-geologic repositories to reach the biosphere is through dissolution of the solid waste and subsequent radionuclide transport by circulating ground water. Thus safety assessment activities must consider the physicochemical interactions between radionculides present in ground water with package components, rocks and sediments since these processes can significantly delay or constrain the mass transport of radionuclides in … more
Date: April 1, 1982
Creator: Serne, R. J. & Relyea, J. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Migration of cesium-137 through a solid core of Magenta dolomite taken from th Rustler Formation in Southeastern New Mexico

Description: A column-flow cesium migration experiment has been conducted in support of the safety assessment program for the Waste Isolation Pilot Plant (WIPP) in Southeastern New Mexico. The column was a monolithic cylinder of Magenta dolomite obtained from a core sample drilled near the proposed WIPP site. The fluid was a Magenta equilibrated de-ionized water solution that had been doped with 0.001 ppM of /sup 137/Cs. The experiment ran continuously for an 18 month period at flow rates comparable to thos… more
Date: March 1981
Creator: Lynch, A. W.; Dosch, R. G. & Hills, C. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Materials used in low-level liquid waste reprocessing/treatment studies at Oak Ridge National Laboratory

Description: The importance of effective waste management in the nuclear fuel cycle cannot be overestimated. At Oak Ridge National Laboratory (ORNL), development work in waste reprocessing and treatment includes the testing and use of various additives for the purpose of facilitating adherence to both process and regulatory performance criteria. Three waste reprocessing/treatment technologies and the associated materials are discussed in this paper: (1) suspension and transfer of sludge from waste storage t… more
Date: January 1, 1987
Creator: McDaniel, E. W.; Weeren, H. O.; Delzer, D. B.; Sams, T. L. & Tallent, O. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Interactions of tailings leachate with local liner materials found at Canonsburg, Pennsylvania.

Description: The mill tailings site at Canonsburg, Pennsylvania is the first mill site to receive remedial action under the Department of Energy's Uranium Mill Tailings Remedial Action Program. Part of this remedial action will require excavating the 53,500 m/sup 3/ (70,000 yd/sup 3/) of tailings on the site having a specific activity exceeding 100 pCi/g, and encapsulating these contaminated tailings in a clay-lined cell. As part of the remedial action effort, Pacific Northwest Laboratory has been studying … more
Date: April 1, 1984
Creator: Dodson, M.E.; Gee, G.W. & Serne, R.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Studies of the dissolution of geothermal scale

Description: Samples of geothermal scale formed from Magmamax No. 1 and Woolsey No. 1 wells in the Imperial Valley, Calif., were exposed to concentrated and dilute solutions of common laboratory reagents. The time of exposure and temperature of the reagent were also varied. Several reagents easily dissolved significant amounts of the scale. An in situ test was performed with marginal success.
Date: February 4, 1980
Creator: Deutscher, S.B.; Ross, D.M.; Quong, R. & Harrar, J.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radon suppression in storage silos at the United States Department of Energy Feed Material Production Center, Fernald, Ohio

Description: Two silos at the Department of Energy Feed Material Production Facility in Fernald, Ohio, contain an estimated 8800 metric tons of high-grade pitchblende ore residue solids, which contain approximately 3,300 curies (Ci) of radium and 1810 Ci of thorium. These silos are the subject of an on-going CERCLA RI/F Program. Fugitive radon emissions from the silos exceed EPA limits. In addition, structural analyses have revealed that the silos have little credible remaining design life. While pursuing f… more
Date: January 1, 1991
Creator: Land, R.R. (Bechtel National, Inc. (USA)); Biancheria, A. (Westinghouse Materials Co., Fernald, OH (USA)) & Craig, J.R. (USDOE, Washington, DC (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Evaluation of saponite and saponite/sepiolite fluids for geothermal drilling

Description: The rheology and other properties of drilling fluids containing saponite and a saponite-sepiolite mixture as the main vicosifier have been systematically evaluated in the temperature range of 300-600{degree}F under appropriate confining pressures up to 16,000 psi. Saponite represents the magnesium analog of the clay mineral montmorillonite, which is the main constituent in conventional bentonite-based fluids. The fluid with 6% saponite exhibits a prominent viscosity enhancement at temperatures … more
Date: February 1, 1991
Creator: Guven, N.; Panfil, D. J. & Carney, L. L. (Texas Tech Univ., Lubbock, TX (USA). Dept. of Geosciences)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Influence of chemical characterization of oil shale solids on understanding water quality impacts

Description: Synfuels technologies will yield products and effluents that are a function of the raw material being processed and the process variables. Chemical and mineralogic characterization of solids generated in synfuels production provide valuable insight into health and environmental impacts associated with synfuels processing (coal liquefaction or gasification and shale oil extraction). This report deals with considerations relating to leachate generation from solid wastes, but the suggested researc… more
Date: January 1, 1981
Creator: Peterson, E. J. & Wagner, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Investigation of sorption interactions between organic and mineral phases of processed oil shale

Description: Minerals and organic compounds representative of oil shale processing wastes were analyzed for potential sorption interactions. The analysis consisted of Fourier Transform Infrared spectroscopy, high performance liquid chromatography, thermogravimetric and differential scanning calorimetry, and laser Raman spectroscopy. Montmorillonite clay was used as a representative of the smectites found in raw and spent shales, and hematite was used as a representative of iron oxide found in spent shales. … more
Date: November 1, 1987
Creator: Blanche, M. S. & Bowen, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Semi-annual report for the unconventional gas recovery program, period ending September 30, 1980

Description: Progress is reported in research on methane recovery from coalbeds, eastern gas shales, western gas sands, and geopressured aquifers. In the methane from coalbeds project, data on information evaluation and management, resource and site assessment and characterization, model development, instrumentation, basic research, and production technology development are reported. In the methane from eastern gas shales project, data on resource characterization and inventory, extraction technology, and t… more
Date: November 1, 1980
Creator: Manilla, R.D. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Distribution coefficient data and preliminary estimates of movement of radionuclides, Tatum salt dome, Lamar County, Mississippi. Technical letter: Dribble 31

Description: Estimates are made relating radionuclide movement to ground water velocity as part of the safety program for a proposed experiment to detonate nuclear devices within the Tatum salt dome. The estimates are based on distribution coefficients obtained from laboratory studies. Core samples obtained from hydrologic test well HT-3, Tatum salt dome, Lamar County, Mississippi, were equilibrated with radionuclides in solutions simulating aquifer waters found in the area. The combinations of Cenozoic san… more
Date: April 10, 1963
Creator: Beetem, W. A. & Janzer, V. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Petrography and geochemistry of precambrian rocks from GT-2 and EE-1

Description: During the drilling of GT-2 and EE-1, 27 cores totaling about 35 m were collected from the Precambrian section. Samples of each different lithology in each core were taken for petrographic and whole-rock major- and trace-element analyses. Whole-rock analyses are now completed on 37 samples. From these data four major Precambrian units were identified at the Fenton Hill site. Geophysical logs and cuttings were used to extrapolate between cores. The most abundant rock type is an extremely variabl… more
Date: August 1, 1977
Creator: Laughlin, A.W. & Eddy, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Role of Non-Ferrous Coal Minerals and by-Product Metallic Wastes in Coal Liquefaction. Technical Progress Report, 1 March 1980-31 May 1980

Description: This report describes work done in a study of the role of coal minerals and by-product metallic wastes in coal liquefaction. The thermal behavior of various minerals and metallic by-product wastes was evaluated by thermal gravimetric analysis and differential thermal analysis in the presence of hydrogen, nitrogen, and air. The CPDU was operated for 220 hours to obtain baseline data and provide information on the catalytic activity of Robena pyrite in solvent hydrogenation and coal liquefaction.… more
Date: June 1, 1980
Creator: Garg, D.; Schweighardt, F. K.; Givens, E. N.; Clinton, J. H.; Tarrer, A. R.; Guin, J. A. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fate of corrosion products released from stainless steel in marine sediments and seawater. Part 4: Hatteras abyssal red clay

Description: A study in which neutron-activated 347 stainless steel was exposed to surficial sediment from a site in the Hatteras Abyssal Plain of the Northwest Atlantic Ocean is described. This sediment consists of approx. 20% CaCO/sub 3/, which could lead to the formation of calcareous scale on the metal surface and reduce the corrosion rate. The distribution of indigenous metals among different chemical fractions shows that extractable Cr, Mn, Fe, Co, and Zn were associated with amorphous Mn and Fe oxide… more
Date: July 1, 1982
Creator: Schmidt, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characteristics of American coals in relation to their conversion into clean energy fuels. Quarterly technical progress report, January--March 1977

Description: Twenty-one coal samples have been added to the Penn State/ERDA Coal Sample Bank. Ninety-six sets of analytical data and 114 coal samples were provided upon request to other agencies engaged in coal research. Mass spectrometer and reactor systems have been used successfully in measuring the amount of vaporization (and pyrolysis) products of hydrocarbons in low concentrations in a helium carrier gas. Research has shown, using small angle x-ray scattering, that the pore structure of a char is a fu… more
Date: June 1, 1977
Creator: Spackman, W.; Davis, A.; Walker, P. L.; Lovell, H. L.; Essenhigh, R. H.; Vastola, F. J. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Catalytic effects in coal gasification. Quarterly report, April-June 1980

Description: This quarterly report, for the period April through June 1980, summarizes the activities of Sandia National Laboratories' program on mineral matter effects in coal gasification. The objective is to determine the effects of mineral matter on the devolatilization of coal and on the subsequent char gasification. We have selected a basis set of Eastern bituminous coals whose mineral matter content, as determined by x-ray analysis of low-temperature ash, ranged from less than 5% to more than 20… more
Date: November 1, 1980
Creator: Padrick, T D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ocean floor sediment as a repository barrier: comparative diffusion data for selected radionuclides in sediments from the Atlantic and Pacific Oceans

Description: Effective diffusion coefficients for selected radionuclides have been measured in ocean floor sediments to provide data for the assessment of barrier effectiveness in subseabed repositories for nuclear waste. The sediments tested include illite-rich and smectite-rich red clays from the mid-plate gyre region of the Pacific Ocean, reducing sediment from the continental shelf of the northwest coast of North America, and Atlantic Ocean sediments from the Southern Nares Abyssal Plain and the Great M… more
Date: January 1, 1985
Creator: Schreiner, F.; Sabau, C.; Friedman, A. & Fried, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Exchange of lyotropic series cations by micaceous vermiculite and its weathering products determined by electron microscopy and radiochemical analysis. Progress report, August 1, 1974--October 31, 1977

Description: Determination of layer charge of micas by /sup 235/U fission particle tracks (thermal neutron activated) was completed by a development of a unique method of UO/sup 2 +/ saturation at pH 2.4 and removal of excess salts physically. The U content and age-dating of soil micas was also accomplished by fission particle counting. Thermodynamic metastability of micaceous vermiculite in soils with reversible mica-vermiculite reactions were found to result in extremely tenacious natural fixation of Cs/s… more
Date: January 1, 1977
Creator: Jackson, M L & Helmke, P A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Waste isolation safety assessment program. Task 4. Third contractor information meeting

Description: The Contractor Information Meeting (October 14 to 17, 1979) was part of the FY-1979 effort of Task 4 of the Waste Isolation Safety Assessment Program (WISAP): Sorption/Desorption Analysis. The objectives of this task are to: evaluate sorption/desorption measurement methods and develop a standardized measurement procedure; produce a generic data bank of nuclide-geologic interactions using a wide variety of geologic media and groundwaters; perform statistical analysis and synthesis of these data;… more
Date: June 1, 1980
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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