Inhibition of bacterially promoted uranium reduction: Ferric (hydr)oxides as competitive electron acceptors.

Journal Article · Mon May 15 04:00:00 EDT 2000 · Environmental Science and Technology

DOI:https://doi.org/10.1021/es991189l· OSTI ID:790243

Wielinga, B ^[1]; Bostick, B; Rosenzweig, R F; Fendorf, S

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1. Stanford University

Reduction of hexavalent to tetravalent uranium results in a marked decrease in the mobility of this hazardous element. Microbial reduction is the most kinetic viable mechanism for such a reaction. Unfortunately, alternate terminal electron acceptors may thus compete with uranyl. We examine the role of common iron oxides on uranyl reduction. Only poorly ordered iron oxides altered the degree and rate of hexavalent uranium reduction and the effect was transitory.

• Research Organization: Scott Fendorf / Stanford University (US)
• Sponsoring Organization: (US)
• DOE Contract Number: FG03-99ER62885
• OSTI ID: 790243
• Report Number(s): 4
• Journal Information: Environmental Science and Technology, Journal Name: Environmental Science and Technology Journal Issue: 11 Vol. 34
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
BINDING ENERGY
ELECTRONS
INHIBITION
INHIBITION
IRON OXIDES
BACTERIAL REDUCTION
IRON OXIDES
KINETICS
URANIUM
URANIUM REDUCTIVE STABILIZATION
URANYL REDUCTION
VALENCE