Composition, stability, and measurement of reduced uranium phases for groundwater bioremediation at Old Rifle, CO

Journal Article · Sat Oct 15 00:00:00 EDT 2011 · Applied Geochemistry

DOI:https://doi.org/10.1016/j.apgeochem.2011.03.094· OSTI ID:1062104

Campbell, K. M. ^[1]; Davis, J. A. ^[2]; Bargar, J. ^[3]; Giammar, D. ^[4]; Bernier-Latmani, R. ^[5]; Kukkadapu, R. ^[6]; Williams, K. H. ^[7]; Veramani, H. ^[4]; Ulrich, K. U. ^[8]; Stubbs, J. ^[3]; Yabusaki, S. ^[6]; Figueroa, L. ^[9]; Lesher, E. ^[9]; Wilkins, M. J. ^[6]; Peacock, A. ^[10]; Long, P. E. ^[6]

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1. USGS, Menlo Park, CA (United States)
2. USGS, Menlo Park, CA (United States) and Lawrence Berkeley National Lab., Berkeley, CA (United States)
3. Stanford Synchrotron Radiation Lightsource, Menlo Park, CA (United States)
4. Washington Univ., St. Louis, MO (United States)
5. Ecole Polytechnique Federale de Lausanne (Switzerland). Environmental Microbiology Lab.
6. Pacific Northwest National Lab., Richland, WA (United States)
7. Lawrence Berkeley National Lab., Berkeley, CA (United States)
8. Washington Univ., St. Louis, MO (United States) and BGD Boden- und Grundwasserlabor GmbH Dresden (Germany)
9. Colorado School of Mines, Golden, CO (United States)
10. Haley and Aldrich, Oak Ridge, TN (United States)

Reductive biostimulation is currently being explored as a possible remediation strategy for uranium (U) contaminated groundwater, and is currently being investigated at a field site in Rifle, CO, USA. The long-term stability of the resulting U(IV) phases is a key component of the overall performance and depends upon a variety of factors, including rate and mechanism of reduction, mineral associations in the subsurface, and propensity for oxidation. To address these factors, several approaches were used to evaluate the redox sensitivity of U: measurement of the rate of oxidative dissolution of biogenic uraninite (UO{sub 2(s)}) deployed in groundwater at Rifle, characterization of a zone of natural bioreduction exhibiting relevant reduced mineral phases, and laboratory studies of the oxidative capacity of Fe(III) and reductive capacity of Fe(II) with regard to U(IV) and U(VI), respectively.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE (United States); LBNL, Earth Sciences Division (United States)
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1062104
• Report Number(s): LBNL-5343E
• Journal Information: Applied Geochemistry, Journal Name: Applied Geochemistry Vol. 26; ISSN 0883-2927
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
54 ENVIRONMENTAL SCIENCES
58 GEOSCIENCES