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Method and apparatus for removing ions from soil

Description: This invention is comprised of a method and apparatus for selectively removing species of ions from an area of soil. Permeable membranes and impregnated with an ion exchange resin that is specific to one or more species of chemical ions are inserted into ground in close proximity to, and on opposing sides of, a soil area of interest. An electric potential is applied across electrodes and to cause the migration of ions out of soil area toward the membranes. Preferably, the resin exchanges ions o… more
Date: December 31, 1992
Creator: Bibler, J. P.
Partner: UNT Libraries Government Documents Department
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System to control contamination during retrieval of buried TRU waste

Description: Between 1950 and 1970 the Department of Energy`s Rocky Flats Plant generated transuranic (TRU) contaminated waste, which was buried at the Idaho National Engineering Laboratory. This waste must now be retrieved and sent to a permanent disposal site. During retrieval the main contaminates to be controlled are compounds of plutonium and americium. Since these substances are small sized, and extremely mobile, airborne concentrations must be kept to a minimum to effectively eliminate personnel upta… more
Date: December 31, 1991
Creator: Menkhaus, D. E.; Loomis, G. G.; Feldman, E. M.; Scott, D. W.; Mullen, C. K. & Meyer, L. C.
Partner: UNT Libraries Government Documents Department
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Method and system for enhancing microbial motility

Description: A method and system for enhancing the motility of microorganisms by placing an effective amount of chlorinated hydrocarbons, preferably chlorinated alkenes, and most preferably trichloroethylene in spaced relation to the microbes so that the surprisingly strong, monomodal, chemotactic response of the chlorinated hydrocarbon on subsurface microbes can draw the microbes away from or towards and into a substance, as desired. In remediation of groundwater pollution, for example, TCE can be injected… more
Date: December 31, 1992
Creator: Hazen, T. C. & Lopez-De-Victoria, G.
Partner: UNT Libraries Government Documents Department
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Bioremediation of contaminated groundwater

Description: The present invention relates to a method for in situ bioremediation of contaminated soil and groundwater. In particular, the invention relates to remediation of contaminated soil and groundwater by the injection of nutrients to stimulate growth of pollutant-degrading microorganisms. The United States Government has rights in this invention pursuant to Contract No. DE-AC09-89SR18035 between the US Department of Energy and Westinghouse Savannah River Company.
Date: December 31, 1992
Creator: Hazen, T. C. & Fliermans, C. B.
Partner: UNT Libraries Government Documents Department
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In-situ remediation system for groundwater and soils

Description: The present invention relates to a system for in-situ remediation of contaminated groundwater and soil. In particular the present invention relates to stabilizing toxic metals in groundwater and soil. The United States Government has rights in this invention pursuant to Contract No. DE-AC09-89SR18035 between the US Department of Energy and Westinghouse Savannah River Company.
Date: January 1, 1991
Creator: Corey, J. C.; Kaback, D. S. & Looney, B. B.
Partner: UNT Libraries Government Documents Department
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Ice electrode electrolytic cell

Description: This invention relates to a method and apparatus for removing heavy metals from waste water, soils, or process streams by electrolytic cell means. The method includes cooling a cell cathode to form an ice layer over the cathode and then applying an electric current to deposit a layer of the heavy metal over the ice. The metal is then easily removed after melting the ice. In a second embodiment, the same ice-covered electrode can be employed to form powdered metals.
Date: December 31, 1992
Creator: Glenn, D. F.; Suciu, D. F.; Harris, T. L. & Ingram, J. C.
Partner: UNT Libraries Government Documents Department
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Use of serospecific biocarrier compositions for enhanced biodegradation and bioremediation of groundwater

Description: A composition and method for using the composition for degrading pollutants in-situ is presented. The composition comprises a biocarrier coated with an antigen-specific antibody that attracts and binds pollution-degrading antigens. The biocarrier, which is preferably in the form of glass microspheres, is coated with one or more strains of antibody. The antibody may be placed into the ground in or near the source of pollutants where it may attract antigens present and bind them, or the antibodie… more
Date: January 1, 1995
Creator: Fliermans, Carl B.
Partner: UNT Libraries Government Documents Department
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Biocarrier Composition for and Method of Degrading Pollutants

Description: The present invention relates to biocarrier compositions that attract and bond pollutant-degrading antigens that will degrade the pollutants. Biocarriers are known generally as a variety of inert or semi-inert compounds or structures having the ability to sequester (attract), hold and biomagnify (enhance) specific microorganisms within their structure. Glass or polystyrene beads are the most well known biocarriers. The biocarrier, which is preferably in the form of glass microspheres, is coated… more
Date: January 1, 1994
Creator: Fliermans, Carl B.
Partner: UNT Libraries Government Documents Department
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Decontamination of matrices containing actinide oxides

Description: There is provided a method for removing actinides and actinide oxides, particularly fired actinides, from soil and other contaminated matrices, comprising: (a) contacting a contaminated material with a solution of at least one inhibited fluoride and an acid to form a mixture; (b) heating the mixture of contaminated material and solution to a temperature in the range from about 30 C to about 90 C while stirring; (c) separating the solution from any undissolved matrix material in the mixture; (d)… more
Date: December 1, 1997
Creator: Villarreal, Robert
Partner: UNT Libraries Government Documents Department
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Apparatus and method for phosphate-accelerated bioremediation

Description: An apparatus and method for supplying a vapor-phase nutrient to contaminated soil for in situ bioremediation. The apparatus includes a housing adapted for containing a quantity of the liquid nutrient, a conduit in fluid communication with the interior of the housing, means for causing a gas to flow through the conduit, and means for contacting the gas with the liquid so that a portion thereof evaporates and mixes with the gas. The mixture of gas and nutrient vapor is delivered to the contaminat… more
Date: January 1994
Creator: Looney, B. B.; Phelps, T. J.; Hazen, T. C.; Pfiffner, S. M.; Lombard, K. H. & Borthen, J. W.
Partner: UNT Libraries Government Documents Department
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