Microbially Mediated Immobilization of Contaminants Through In Situ Biostimulation: Scale up of EMSP project 55267

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The overall goal of the proposed 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 redox sensitive toxic metals and radionuclides. The study is motivated by the likelihood that subsurface metal-reducing bacteria can be stimulated to effectively alter the redox state of contaminants so that they are immobilized in situ for long time periods. The work described in this proposal will advance the technological and scientific needs associated with the long-term management of the enormous inground inventories of Cr, U, Tc, and Co present at ... continued below

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Jardin, Philip M.; Brooks, Scott C. & Fendorf, Scott E. June 28, 2002.

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Description

The overall goal of the proposed 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 redox sensitive toxic metals and radionuclides. The study is motivated by the likelihood that subsurface metal-reducing bacteria can be stimulated to effectively alter the redox state of contaminants so that they are immobilized in situ for long time periods. The work described in this proposal will advance the technological and scientific needs associated with the long-term management of the enormous inground inventories of Cr, U, Tc, and Co present at numerous DOE installations throughout the country. The objectives of our project are to (1) develop an improved understanding and predictive capability of the rates and mechanisms controlling microbially mediated reduction of toxic metals and radionuclides in heterogeneous field settings, (2) quantify the impacts of hydrological and geochemical processes on the effectiveness of indigenous microorganisms to transform and immobilize radionuclides and metals in situ, (3) provide an improved understanding of the importance of microbial consortia interactions in the bacterial immobilization of radionuclides and toxic metals, and (4) determine intrinsic bioreduction rate parameters to improve our generic predictive capability of in situ microbially metal reduction.

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  • Other Information: PBD: 28 Jun 2002

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  • Report No.: EMSP-73784-2002
  • Grant Number: FG07-00ER15119
  • DOI: 10.2172/834466 | External Link
  • Office of Scientific & Technical Information Report Number: 834466
  • Archival Resource Key: ark:/67531/metadc788715

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  • June 28, 2002

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  • Dec. 3, 2015, 9:30 a.m.

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  • Nov. 3, 2016, 7:39 p.m.

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Jardin, Philip M.; Brooks, Scott C. & Fendorf, Scott E. Microbially Mediated Immobilization of Contaminants Through In Situ Biostimulation: Scale up of EMSP project 55267, report, June 28, 2002; Oak Ridge, Tennessee. (digital.library.unt.edu/ark:/67531/metadc788715/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.