Reduction of Cr, Mo, Se and U by Desulfovibrio desulfuricans immobilized in polyacrylamide gels
Open accessAbstract
Intact cells of Desulfovibrio desulfuricans, immobilized in polyacrylamide gel, removed Cr, Mo, Se and U from solution by enzymatic-mediated reduction reactions. Lactate or H2 served as the electron donor and the oxidized Cr(VI), Mo(VI), Se(VI) and U(VI) served as electron acceptors. Reduction of the oxidized metal species resulted in the precipitation of solid phases of the metals. Metal removal efficiencies of 86-96% were achieved for initial concentrations of 1 mM Mo, Se, and U and 0.5 mM Cr. Insoluble metal phases accumulated on both the surface and the interior of the polyacrylamide gel. In column tests conducted for U removal, effluent concentrations less than 20 micrograms L(-1) were achieved with initial concentrations of 5 mg L(-1) and 20 mg L(-1) U and residence times from 25-37 h. The enzymatic reduction of Cr, Mo, Se, and U by immobilized cells of D. desulfuricans may be a practical method for removing these metals from solution in a biological reactor.
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- Authors
- Tucker, M. D., Barton, L. L., & Thomson, B. M.
- Affiliations
- Sandia National Laboratories (US)
- University of New Mexico (US)
- Venue
- Journal of Industrial Microbiology and Biotechnology
- Publisher
- Oxford University Press (OUP)
- Published
- 1998-01-01
- Volume
- 20
- Issue
- 1
- Pages
- 13-19
- ISSN
- 1367-5435 (ISSN-L)
- 1476-5535
- OpenAlex
- W2049844235
- Cited by
- 141
- References
- 17
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 2 · 2023: 3 · 2022: 5 · 2021: 4 · 2019: 4 · 2018: 4 · 2017: 8 · 2016: 5 · 2015: 4 · 2014: 8 · 2013: 5 · 2012: 6
- FWCI
- 4.09
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Industrial Microbiology & Biotechnology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- U.S. Department of Energy (DE–AC04–94AL85000, AC04-94AL85000)
- Sandia National Laboratories (94AL85000, DEAC04-94AL85000, AC04-94AL85000)
- Topics
- Physical Sciences › Chemistry › Inorganic Chemistry › Radioactive element chemistry and processing
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Chromium effects and bioremediation
- Physical Sciences › Engineering › Biomedical Engineering › Metal Extraction and Bioleaching
- Keywords
- Desulfovibrio desulfuricans, cell immobilization, polyacrylamide hydrogel, enzymatic reduction, hexavalent chromium, hexavalent molybdenum, uranium(VI), metal removal, column bioreactor, lactate electron donor, metal precipitation, bioremediation
- MeSH terms
- Acrylic Resins, Biodegradation, Environmental, Chromium, Desulfovibrio, Hydrogen-Ion Concentration, Molybdenum, Oxidation-Reduction, Chemical Precipitation, Selenium, Solubility, Temperature, Uranium, Water Pollution, Chemical, Bioreactors
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