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in subjects: "Smectite"  
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A Novel, Integrated Treatment System for Coal Waste Waters. Quarterly Report, June 2, 1993--September 1, 1993

Description: The aims of this study are to develop, characterize and optimize a novel treatment scheme that would be effective simultaneously against the toxic organics and the heavy metals present in coal conversion waste waters. In this report, the following findings have been reported and discussed. Acid-base titration of Duomeen-T (DT), a diamine surfactant, that has been used in this study to modify smectite surfaces to form smectite-DT complexes has been undertaken. In aqueous medium containing 5% by … more
Date: December 31, 1993
Creator: Wang, H. Y. & Srinivasan, K. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Novel Sorbents for Coal Conversion Wastewater Treatment. Quarterly Report, September 16, 1989--December 15, 1989

Description: In this report results from a study undertaken to scale-up the clay modification procedure are described. Hitherto, adsorption of toxic organics found in coal conversion wastewater onto modified clays was carried out in a batch mode utilizing small amounts of the adsorbents. A realistic evaluation of the potential of modified clays as adsorbents under field conditions necessitates the development of continuous wastewater treatment schemes requiring larger amounts of the adsorbents. Hence a need… more
Date: December 31, 1989
Creator: Fogler, H. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radionuclide separations using pillared layered materials. Final report

Description: The objective of this project is to prepare an all inorganic strontium specific sorbent or ion exchanger for the removal of highly alkaline nuclear waste solutions. A series of clays and layered titanates were pillared and calcined to convert their essentially two dimensional structure to three dimensional porous structures with high surface areas. The pillaring agents were alumina, zirconia, chromia and silica based. The pillared clays, particularly those containing Zr pillars, achieved modera… more
Date: August 31, 1995
Creator: Clearfield, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Studies of altered vitrophyre for the prediction of nuclear waste repository - induced thermal alteration at Yucca Mountain, Nevada

Description: Nuclear waste emplacement in devitrified volcanic tuff at Yucca Mountain will raise the temperature of surrounding rock for a geologically significant period of time. This study evaluates the susceptibility of an underlying 50-ft-thick vitrophyre to thermal alteration by examining alteration that occured in the rock as it cooled after deposition. A 10{sup 0}C temperature rise should have no mineralogical effects on the vitrophyre, but an increase of 60{sup 0} or more is likely to result in alte… more
Date: December 31, 1983
Creator: Levy, S.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Effects of radiation exposure on glass alteration in a steam environment

Description: Several Savannah River Plant (SRL) glass compositions were reacted in steam at temperatures of 150 to 200{degrees}C. Half of the tests utilized actinide-doped monoliths and were exposed to an external ionizing gamma source, while the remainder were doped only with U and reacted without gamma exposure. All glass samples readily reacted to form secondary mineral phases within the first week of testing. An in situ layer of smectite initially developed on nonirradiated SRL 202 glass test samples. A… more
Date: December 31, 1992
Creator: Wronkiewicz, D. J.; Bates, J. K.; Tani, B. S. & Wang, L. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Organic or organometallic template mediated clay synthesis

Description: A method is given for incorporating diverse varieties of intercalants or templates directly during hydrothermal synthesis of clays such as hectorite or montmorillonite-type layer-silicate clays. For a hectorite layer-silicate clay, refluxing a gel of silica sol, magnesium hydroxide sol and LiF for 2 days with an organic or organometallic intercalant or template results in crystalline products containing either (a) organic dye molecules such as ethyl violet and methyl green, (b) dye molecules su… more
Date: December 31, 1992
Creator: Gregar, K.C.; Winans, R.E. & Botto, R.E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Solid state 13C NMR analysis of shales and coals from Laramide Basins. Final report, March 1, 1995--March 31, 1996

Description: This Western Research Institute (WRI) jointly sponsored research (JSR) project augmented and complemented research conducted by the University of Wyoming Institute For Energy Research for the Gas Research Institute. The project, {open_quotes}A New Innovative Exploitation Strategy for Gas Accumulations Within Pressure Compartments,{close_quotes} was a continuation of a project funded by the GRI Pressure Compartmentalization Program that began in 1990. That project, {open_quotes}Analysis of Press… more
Date: December 31, 1998
Creator: Miknis, F. P.; Jiao, Z. S.; Zhao, Hanqing & Surdam, R. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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