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Alkali sorber (RABSAM), September 1, 1990--August 30, 1991

Description: The objective of this work is to develop a regenerable activated-bauxite sorber alkali monitor that requires no high-temperature/high-pressure sampling line for the reliable in situ measurement of alkali-vapor concentration in the exhaust from the pressurized fluidized-bed combustion of coal. 11 refs., 2 figs., 1 tab.
Date: January 1, 1991
Creator: Lee, S. H. D. & Swift, M. W.
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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Geotechnical Properties of Sediments From North Pacific and Northern Bermuda Rise

Description: Studies of geotechnical properties for the Sub-seabed Disposal Program have been oriented toward sediment characterization related to effectiveness as a containment media and determination of detailed engineering behavior. Consolidation tests of the deeper samples in the North Pacific clays indicate that the sediment column is normally consolidated. The in-situ coefficient of permeability (k) within the cored depth of 25 meters is relatively constant at 10/sup -7/ cm/sec. Consolidated undrained… more
Date: January 1, 1980
Creator: Silva, A. J.; Laine, E. P.; Lipkin, J.; Heath, G. R. & Akers, S. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Backfill barrier as a component in a multiple barrier nuclear waste isolation system

Description: Quantitative estimates of the potential effectiveness of backfill barriers based on a linear sorption model are presented. Using getters such as clays (known sorbents), a backfill approximately 1-foot-thick can delay by 10/sup 4/ to 10/sup 5/ years the breakthrough of transuranics. A delay of 10/sup 3/ years is possible for major cationic fission products. These delays can be achieved provided that (1) the distribution coefficient (K/sub d/, a measure of affinity for sorbed species) for the bar… more
Date: May 1, 1980
Creator: Nowak, E.J.
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 3. Calcareous ooze

Description: The physicochemical forms and partitioning of corrosion products released from stainless steel upon exposure to selected environmental conditions is the subject of this investigation. This report describes the influence of calcareous sediment on the rate of release and fate of corrosion products produced when neutron-activated stainless steel specimens were exposed to a Globigerina ooze taken from the Northeast Pacific Ocean. The calcareous ooze used in this study consists largely of planktonic… more
Date: April 1, 1982
Creator: Schmidt, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Light stable isotope study of the Roosevelt Hot Springs thermal area, Southwestern Utah

Description: The isotopic composition of hydrogen, oxygen, and carbon has been determined for regional cold springs, thermal fluids, and rocks and minerals from the Roosevelt Hot Springs thermal area. The geothermal system has developed within plutonic granitic rocks and amphibolite facies gneiss, relying upon fracture-controlled permeability for the migration of the thermal fluids. Probably originating as meteoric waters in the upper elevations of the Mineral Mountains, the thermal waters sampled in the pr… more
Date: May 1, 1980
Creator: D.T., Rohrs & Bowman, J.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Moisture content analysis of covered uranium mill tailings

Description: The use of vegetation and rock covers to stabilize uranium mill tailings cover systems is being investigated by Pacific Northwest Laboratory. A modeling study of moisture movement through the tailings and cover layers was initiated to determine the effect of the stabilizing techniques. The cover system was simulated under climatic conditions occurring at Grand Junction, Colorado. The cover consisted of a layer of wet clay/gravel mix followed by a capillary barrier of washed rock and a surface l… more
Date: December 1, 1981
Creator: Mayer, D. W.; Beedlow, P. A. & Cadwell, L. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Light-stable-isotope studies of spring and thermal waters from the Roosevelt Hot Springs and Cove Fort/Sulphurdale Thermal areas and of clay minerals from the Roosevelt Hot Springs thermal area

Description: The isotopic compositions of hydrogen and oxygen have been determined for spring waters and thermal fluids from the Roosevelt Hot Springs and Cove Fort-Sulphurdale thermal areas, for clay mineral separates from shallow alteration of the acid-sulfate type in the Roosevelt Hot Springs area, and for spring and well waters from the Goshen Valley area of central Utah. The water analyses in the Roosevelt Hot Springs thermal area confirm the origin of the thermal fluids from meteoric water in the Mine… more
Date: October 1, 1981
Creator: Bowman, J.R. & Rohrs, D.T.
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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Physical response of backfill materials to mineralogical changes in a basalt environment. [Sand-clay mixture containing 25% bentonite]

Description: Backfill materials surrounding waste canisters in a high-level nuclear waste repository are capable of ensuring very slow flow of groundwater past the canisters, and thereby increase the safety of the repository. However, in the design of a repository it will be necessary to allow for possible changes in the backfill. In this experimental program, changes in permeability, swelling behavior, and plastic behavior of the backfill at the temperatures, pressures, and radiation levels expected in a r… more
Date: January 1, 1983
Creator: Couture, R.A. & Seitz, M.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Organ/inorganic interactions of nitrogen in oilfields: Part 1, Geochemistry

Description: A detailed investigation of the geochemistry of nitrogen in oilfields is being conducted in order to test the model that N is generated from hydrocarbons during thermal maturation and is incorporated into authigenic clay minerals in the sediments through which the oil and brines migrate. If the model is correct, there should be fixed-NH{sub 4} anomalies that can be correlated across an oilfield to indicate the pathway of migration into the trap. The preliminary data from this research shows tha… more
Date: May 1992
Creator: Williams, Lynda B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Laboratory measurements of radon diffusion through multilayered cover systems for uranium tailings

Description: Laboratory measurements of radon fluxes and radon concentration profiles were conducted to characterize the effectiveness of multilayer cover systems for uranium tailings. The cover systems utilized soil and clay materials from proposed disposal sites for the Vitro, Durango, Shiprock, Grand Junction and Riverton tailings piles. Measured radon fluxes were in reasonable agreement with values predicted by multilayer diffusion theory. Results obtained by using air-filled porosities in the diffusion… more
Date: December 1, 1981
Creator: Nielson, K. K.; Rogers, V. C.; Rich, D. C.; Nederhand, F. A.; Sandquist, G. M. & Jensen, C. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of geothermal potential in the Waianae Caldera Area, Western Oahu, Hawaii. Assessment of Geothermal Resources in Hawaii: Number 2

Description: Studies of Lualualei Valley, Oahu have been conducted to determine whether a thermal anomaly exists in the area and, if so, to identify sites at which subsurface techniques should be utilized to characterize the resource. Geologic mapping identifies several caldera and rift zone structures in the Valley and provides a tentative outline of their boundaries. Clay mineralogy studies indicate that minor geothermal alteration of near-surface rocks has occurred at some period in the history of the ar… more
Date: September 1, 1979
Creator: Cox, M. E.; Sinton, J. M.; Thomas, D. M.; Mattice, M. D.; Kauahikaua, J. P.; Helstern, D. M. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Groundwater prospecting for sandstone-type uranium deposits: the merits of mineral-solution equilibria versus single element tracer methods. Volume 2

Description: This report presents the results of further research on the groundwater geochemistry of 96 well waters in two uraniferous aquifers in Texas and Wyoming, and is a continuation of the work presented by Chatham et al. (1981). In this study variations in concentrations of U, As, Mo, Se and V were compared with the saturation state of the groundwater with respect to mineral phases of these elements known or expected to occur in each area. The non-radiogenic trace elements exhibited strong redox depe… more
Date: August 1981
Creator: Wanty, R. B.; Langmuir, D. & Chatham, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thermal, chemical, and mass-transport processes induced in abyssal sediments by the emplacement of nuclear waste: experimental and modeling results

Description: This paper discusses heat and mass transport studies of marine red clay sediments being considered as a nuclear waste isolation medium. Numerical models indicate that for a maximum allowable sediment/canister interface temperature of 200 to 250/sup 0/C, the sediment can absorb about 1.5 kW initial power from waste in a 3 m long by 0.3 m dia canister buried 30 m in the sediment. Fluid displacement due to convection is found to be less than 1 m. Laboratory studies of the geochemical effects induc… more
Date: January 1, 1980
Creator: McVey, D.F.; Erickson, K.L. & Seyfried, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fate of corrosion products released from stainless steel in marine sediments and seawater. Part 1. Northeast Pacific pelagic red clay

Description: To provide information useful for determining the biogeochemical cycling of corrosion products in the benthic boundary layer of the deep ocean, neutron-activated stainless steel was exposed to seawater and to Northeast Pacific red clay under aerobic and non-oxygenated conditions. This report describes the trace metal geochemistry of the sediment and the chemical speciation of the corrosion products. The sediments generally consisted of reddish-brown clay at the surface grading to a dark-brown t… more
Date: March 1, 1982
Creator: Schmidt, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Computed solid phases limiting the concentration of dissolved constituents in basalt aquifers of the Columbia Plateau in eastern Washington. Geochemical modeling and nuclide/rock/groundwater interaction studies

Description: A speciation-solubility geochemical model, WATEQ2, was used to analyze geographically-diverse, ground-water samples from the aquifers of the Columbia Plateau basalts in eastern Washington. The ground-water samples compute to be at equilibrium with calcite, which provides both a solubility control for dissolved calcium and a pH buffer. Amorphic ferric hydroxide, Fe(OH)/sub 3/(A), is at saturation or modestly oversaturated in the few water samples with measured redox potentials. Most of the groun… more
Date: August 1, 1982
Creator: Deutsch, W. J.; Jenne, E. A. & Krupka, K. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Clay-mineral fabrics and chemistry in Salton Trough geothermal fields

Description: Fluid production from, and hence the economic viability of, a geothermal field is related to the amount of clay minerals in the caprock and in the reservoir rocks. In both the East Mesa and Cerro Prieto fields in the Salton Trough of southern California, United States, and Baja California, Mexico, scanning electron micrography (SEM) has vividly documented the role of clay fabrics in deltaic quartz-sandstone reservoirs. For example, in East Mesa well 78-30 at 1630 m depth in a zone of quartz dis… more
Date: July 1, 1981
Creator: Haar, S.V.; Wolgemuth, K. & Schatz, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Petrographic correlations and mathematical analysis of log signatures for clay identification

Description: This report presents the results of correlation of log signature with information on distribution of the types and volumes of clays in the sandstone pore spaces determined from detailed CT-scan, XRD, SEM and thin section analyses of core samples from three sandstone reservoirs. The log signatures are then analyzed to determine if suitable mathematical/statistical parameter(s) could be calculated from the logs for identification of types and volumes of clays in sandstone reservoirs.
Date: April 1, 1992
Creator: Sharma, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fine particle clay catalysts for coal liquefaction

Description: The efficient production of environmentally acceptable distillate fuels requires catalysts for hydrogenation and cleavage of the coal macromolecules and removal of oxygen, nitrogen, and sulfur heteroatoms. The goal of the proposed research is to develop new catalysts for the direct liquefaction of coal. This type of catalyst consists of fine clay particles that have been treated with reagents which form pillaring structures between the aluminosilicate layers of the clay. The pillars not only ho… more
Date: January 1, 1991
Creator: Olson, E.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Clay mineralogy and depositional history of the Frio Formation in two geopressured wells, Brazoria County, Texas

Description: Twenty-three shale samples ranging in depth from 5194 ft to 13,246 ft from Gulf Oil Corporation No. 2 Texas State Lease 53034 well and 33 shale samples ranging in depth from 2185 ft to 15,592 ft from General Crude Oil Company/Department of Energy No. 1 Pleasant Bayou well were examined by x-ray techniques to determine the mineralogy of the geopressured zone in the Brazoria Fairway. Both wells have similar weight-percent trends with depth for a portion of the mineralogy. Calcite decreases, and p… more
Date: January 1, 1982
Creator: Freed, R.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Tabulation and evaluation of ion exchange data on smectites, certain zeolites and basalt

Description: An extensive search of the literature has been made for ion exchange data on smectites, certain zeolites and basalt. The data are in the form of thermodynamic equilibrium constants, corrected selectivity coefficients, and distribution coefficients. Room temperature alkali and alkaline earth metal cation ion exchange data for smectites are extensive. Correlation between the exchange free energies of alkali metal cations on Camp Berteau montmorillonite values with their Debeye-Hueckel parameter w… more
Date: May 1, 1980
Creator: Benson, L. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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