Journal ArticleDOI
Bioremediation of uranium contamination with enzymatic uranium reduction
TLDR
In this paper, Desulfovibrio desulfuricans readily removed uranium from solution in a batch system or when D. desufuricans was separated from the bulk of the uranium-containing water by a semipermeable membrane.Abstract:
Enzymatic uranium reduction by Desulfovibrio desulfuricans readily removed uranium from solution in a batch system or when D. desufuricans was separated from the bulk of the uranium-containing water by a semipermeable membrane. Uranium reduction continued at concentrations as high as 24 mM. Of a variety of potentially inhibiting anions and metals evaluated, only high concentrations of copper inhibited uranium reductionread more
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Journal ArticleDOI
Dissimilatory Fe(III) and Mn(IV) reduction.
TL;DR: The physiological characteristics of Geobacter species appear to explain why they have consistently been found to be the predominant Fe(III)- and Mn(IV)-reducing microorganisms in a variety of sedimentary environments.
Book ChapterDOI
Dissimilatory Fe(III) and Mn(IV) reduction.
TL;DR: The ability to oxidize hydrogen with the reduction of Fe(III) is a highly conserved characteristic of hyperthermophilic microorganisms, most notably those in the Geobacteraceae family as mentioned in this paper.
Journal ArticleDOI
Dissimilatory Metal Reduction
TL;DR: Microorganisms can enzymatically reduce a variety of metals in metabolic processes that are not related to metal assimilation, including technetium, vanadium, molybdenum, gold, silver, and copper, but reduction of these metals has not been studied extensively.
Journal ArticleDOI
Stimulating the in situ activity of Geobacter species to remove uranium from the groundwater of a uranium-contaminated aquifer.
Robert T. Anderson,Helen A. Vrionis,Irene Ortiz-Bernad,Charles T. Resch,Philip E. Long,Richard Dayvault,Ken Karp,Sam Marutzky,Donald R. Metzler,Aaron D. Peacock,David C. White,Mary Lowe,Derek R. Lovley +12 more
TL;DR: The results demonstrate that in situ bioremediation of uranium-contaminated groundwater is feasible but suggest that the strategy should be optimized to better maintain long-term activity of Geobacter species.
Journal ArticleDOI
Surface catalysis of uranium(VI) reduction by iron(II)
TL;DR: In this article, the authors investigated the kinetic effect of specific adsorption interactions on the chemical reduction of uranyl (UVIO22+) by ferrous iron, and derived a rate law for surface-catalyzed U(VI) reduction by Fe(II), d[U(VI)] dt =−k[≡ Fe III OFe II OH 0 ][U( VI)] ads where the bimolecular rate constant k has a value of 399 ± 25 M−1 min−1 at 25°C.