Stabilization of Plutonium in Subsurface Environments via Microbial Reduction and Biofilm Formation

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Plutonium has a long half-life (2.4 x 104 years) and is of concern because of its chemical and radiological toxicity, high-energy alpha radioactive decay. A full understanding of its speciation and interactions with environmental processes is required in order to predict, contain, or remediate contaminated sites. Under aerobic conditions Pu is sparingly soluble, existing primarily in its tetravalent oxidation state. To the extent that pentavalent and hexavalent complexes and small colloidal species form they will increase the solubility and resultant mobility from contamination sources. There is evidence that in both marine environments and brines substantial fractions of the plutonium in ... continued below

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Boukhalfa, Hakim; Icopini, Gary A.; Reilly, Sean D. & Neu, Mary P. April 19, 2007.

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Description

Plutonium has a long half-life (2.4 x 104 years) and is of concern because of its chemical and radiological toxicity, high-energy alpha radioactive decay. A full understanding of its speciation and interactions with environmental processes is required in order to predict, contain, or remediate contaminated sites. Under aerobic conditions Pu is sparingly soluble, existing primarily in its tetravalent oxidation state. To the extent that pentavalent and hexavalent complexes and small colloidal species form they will increase the solubility and resultant mobility from contamination sources. There is evidence that in both marine environments and brines substantial fractions of the plutonium in solution is present as hexavalent plutonyl, PuO2 2+.

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  • Annual Environmental Remediation Science Program (ERSP) Principal Investigator Meeting, April 16-19, 2007, Lansdowne, VA

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  • Report No.: CONF-ERSP2007/1024817
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 925441
  • Archival Resource Key: ark:/67531/metadc898909

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Office of Scientific & Technical Information Technical Reports

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  • April 19, 2007

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 2, 2016, 12:32 p.m.

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Boukhalfa, Hakim; Icopini, Gary A.; Reilly, Sean D. & Neu, Mary P. Stabilization of Plutonium in Subsurface Environments via Microbial Reduction and Biofilm Formation, article, April 19, 2007; Los Alamos, New Mexico. (digital.library.unt.edu/ark:/67531/metadc898909/: accessed December 11, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.