Resistance of solid-phase U(VI) to microbial reduction during in situ bioremediation of uranium-contaminated groundwater

Appl Environ Microbiol. 2004 Dec;70(12):7558-60. doi: 10.1128/AEM.70.12.7558-7560.2004.


Speciation of solid-phase uranium in uranium-contaminated subsurface sediments undergoing uranium bioremediation demonstrated that although microbial reduction of soluble U(VI) readily immobilized uranium as U(IV), a substantial portion of the U(VI) in the aquifer was strongly associated with the sediments and was not microbially reducible. These results have important implications for in situ uranium bioremediation strategies.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Acetates / metabolism
  • Biodegradation, Environmental
  • Deltaproteobacteria / metabolism
  • Fresh Water / chemistry
  • Fresh Water / microbiology*
  • Geologic Sediments / chemistry
  • Geologic Sediments / microbiology*
  • Oxidation-Reduction
  • Solubility
  • Uranium / chemistry*
  • Uranium / metabolism*
  • Water Pollutants, Radioactive / metabolism*


  • Acetates
  • Water Pollutants, Radioactive
  • Uranium