Resistance of solid-phase U(VI) to microbial reduction during in situ bioremediation of uranium-contaminated groundwater.
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.
Ortiz-Bernad
Irene
I
Department of Microbiology, University of Massachusetts, Morrill Science Center IVN, Amherst, MA 01003, USA. iortiz@microbio.umass.edu
Anderson
Robert T
RT
Vrionis
Helen A
HA
Lovley
Derek R
DR
D000085:Acetates / Q000378:metabolism; D001673:Biodegradation, Environmental; D020564:Deltaproteobacteria / Q000378:metabolism; D005618:Fresh Water / Q000737:chemistry / Q000382:microbiology*; D019015:Geologic Sediments / Q000737:chemistry / Q000382:microbiology*; D010084:Oxidation-Reduction; D012995:Solubility; D014501:Uranium / Q000737:chemistry* / Q000378:metabolism*; D014875:Water Pollutants, Radioactive / Q000378:metabolism*
D000085:Acetates; D014875:Water Pollutants, Radioactive; D014501:Uranium