Mesoscale Biotransformation of Uranium [electronic resource] : Influences of Organic Carbon Supply Rates and Sediment Oxides
- Washington, D.C. : United States. Dept. of Energy. Office of Science, 2007.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Additional Creators:
- Lawrence Berkeley National Laboratory, United States. Department of Energy. Office of Science, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Remediation and long-term stewardship of uranium-contaminated sediments and groundwaters are critical problems at a number of DOE facilities and mining sites. Some remediation strategies based on in-situ bioreduction of U are potentially effective in significantly decreasing U concentrations in groundwaters. However, a number of basic processes require understanding in order to identify conditions more conducive to success of reduction-based U stabilization. Our current research targets several of these issues including: (1) effects of organic carbon (OC) forms and supply rates on stability of bioreduced U, (2) the roles of Fe(III)- and Mn(III,IV)-oxides as potential U oxidants in sediments, and (3) microbial community changes in relation to U redox changes. These issues were identified in our previous study on U bioreduction and reoxidation (Wan et al., 2005). Most of our studies are being conducted on historically U-contaminated sediments from Area 2 of the Field Research Center, Oak Ridge National Laboratory, in flow-through columns simulating in-situ field remediation.
- Report Numbers:
- E 1.99:conf/ersp2007-1024940a
- Other Subject(s):
- Published through SciTech Connect.
Annual Environmental Remediation Science Program (ERSP) Principal Investigator Meeting, April 16-19, 2007, Lansdowne, VA.
Terry Hazen; Jiamin Wan; Tetsu Tokunaga; Mary Firestone; Eoin Brodie; Yongman Kim; Steve Sutton; Matt Newville; Tony Lanzirotti; Rebecca Daly; Bill Rao.
- Funding Information:
- ERSD 1024940a
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