Containment of Toxic Metals and Radionuclides in Porous and Fractured

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The purpose of this research is to provide an improved understanding and predictive capability of the mechanisms that allow metal-reducing bacteria to be effective in the bioremediation of subsurface environments contaminated with toxic metals and radionuclides. The study is motivated by the likelihood that subsurface microbial activity can effectively alter the redox state of toxic metals and radionuclides so that they are immobilized for long time periods. Our objectives are to (1) develop an improved understanding of the rates and mechanisms of competing geochemical oxidation and microbiological reduction reactions that govern the fate and transport of redox-sensitive metals and radionuclides ... continued below

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Jardine, Philip M.; Saiers, James & Fendorf, Scott E. June 1, 1999.

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Description

The purpose of this research is to provide an improved understanding and predictive capability of the mechanisms that allow metal-reducing bacteria to be effective in the bioremediation of subsurface environments contaminated with toxic metals and radionuclides. The study is motivated by the likelihood that subsurface microbial activity can effectively alter the redox state of toxic metals and radionuclides so that they are immobilized for long time periods. Our objectives are to (1) develop an improved understanding of the rates and mechanisms of competing geochemical oxidation and microbiological reduction reactions that govern the fate and transport of redox-sensitive metals and radionuclides in the subsurface, and (2) quantify the conditions that optimize the microbial reduction of toxic metals and radionuclides, for the purpose of contaminant containment and remediation in heterogeneous systems that have competing geochemical oxidation, sorption, and organic ligands. The overall goal of this project is to use basic research to develop a cost effective remediation strategy that employs in situ contaminant immobilization. Specifically, we will develop active biowall technologies to contain priority EM contaminant plumes in groundwater.

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  • Other Information: PBD: 1 Jun 1999

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  • Report No.: EMSP-55267--1999
  • DOI: 10.2172/828158 | External Link
  • Office of Scientific & Technical Information Report Number: 828158
  • Archival Resource Key: ark:/67531/metadc779319

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  • June 1, 1999

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  • Dec. 3, 2015, 9:30 a.m.

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  • Nov. 3, 2016, 7:28 p.m.

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Jardine, Philip M.; Saiers, James & Fendorf, Scott E. Containment of Toxic Metals and Radionuclides in Porous and Fractured, report, June 1, 1999; Oak Ridge, Tennessee. (digital.library.unt.edu/ark:/67531/metadc779319/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.