"Final Report for Grant No. DE-FG02-97ER62492 "Engineering Deinococcus radiodurans for Metal Remediation in Radioactive Mixed Waste Sites"
The groundwater and sediments of numerous U. S. Department of Energy (DOE) field sites are contaminated with mixtures of heavy metals (e.g., Hg, Cr, Pd) and radionuclides (e.g., U, Tc), as well as the fuel hydrocarbons benzene, toluene, ethylbenzene and xylenes (BTEX); chlorinated hydrocarbons, such as trichloroethylene (TCE); and polychlorinated biphenyls (PCBs). The remediation of such mixed wastes constitutes an immediate and complex waste management challenge for DOE, particularly in light of the costliness and limited efficacy of current physical and chemical strategies for treating mixed wastes. In situ bioremediation via natural microbial processes (e.g., metal reduction) remains a potent, potentially cost-effective approach to the reductive immobilization or detoxification of environmental contaminants. Seventy million cubic meters of soil and three trillion liters of groundwater have been contaminated by leaking radioactive waste generated in the United States during the Cold War. A cleanup technology is being developed based on the extremely radiation resistant bacterium Deinococcus radiodurans. Our recent isolation and characterization of D. radiodurans from a variety of DOE environments, including highly radioactive sediments beneath one of the leaking tanks (SX-108) at the Hanford Site in south-central Washington state, underscores the potential for this species to survive in such extreme environments.more »
- Publication Date:
- OSTI Identifier:
- Report Number(s):
- DOE Contract Number:
- Resource Type:
- Technical Report
- Research Org:
- The Henry M. Jackson Foundation
- Sponsoring Org:
- USDOE Office of Science (SC);
- Country of Publication:
- United States
- 12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 54 ENVIRONMENTAL SCIENCES; 59 BASIC BIOLOGICAL SCIENCES; BENZENE; BIOLOGY; BIOREMEDIATION; BIOSYNTHESIS; CHRONIC IRRADIATION; GENETICS; HEAVY METALS; HYDROCARBONS; MINERALIZATION; ORGANIC CHLORINE COMPOUNDS; OXIDATION; POLYCHLORINATED BIPHENYLS; RADIOACTIVE WASTES; RADIOISOTOPES; TOLUENE; WASTE MANAGEMENT; XYLENES Deinococcus; Bioremediation; Radionuclides; Heavy Metals; Toxic Organic Compounds; Radiation
Enter terms in the toolbar above to search the full text of this document for pages containing specific keywords.