Field-scale evaluation of biological uranium reduction and reoxidation in the near-source zone at the NABIR Field Research Center in Oak Ridge, TN

Technical Report · Thu Jun 01 04:00:00 EDT 2006

DOI:https://doi.org/10.2172/896021· OSTI ID:896021

Criddle, Craig S; Kitanidis, Peter; Fendorf, Scott; Wu, Weimin; Jardine, Philip M; Zhou, Jizhong; Gu, Baohua

The primary objective of the project is to advance the understanding and predictive capability of coupled hydrological, geochemical, and microbiological processes that control the in situ transport and bioremediation radionuclides and co-contaminants at multiple scales. Specific objectives include: (1) Investigate the feasibility of in situ bioremediation of uranium in a highly contaminated region within the subsurface of Area 3 of the DoE ERSP FRC (2) Using a variety of tracer strategies, develop and model a system that establishes hydraulic control of the target region for biostimulation (3) Perform long term in situ biostimulation studies that create a microbial communities capable of reducing residual nitrate to N2 and mobile U(VI) to sparingly soluble U(IV) (4) Use a variety of solid and solution phase interrogation techniques to quantify the extent of in situ reduction and immobilization of U(VI). (5) Investigate a variety of geochemical factors that influence the stability and possible reoxidation of reduced uranium.

• Research Organization: Stanford University, Palo Alto, CA; Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
• Sponsoring Organization: USDOE - Office of Science (SC)
• OSTI ID: 896021
• Report Number(s): ERSD-1016391-2006
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
54 ENVIRONMENTAL SCIENCES
59 BASIC BIOLOGICAL SCIENCES
BIOREMEDIATION
COMMUNITIES
EVALUATION
HYDRAULICS
NITRATES
RADIOISOTOPES
STABILITY
TARGETS
TRANSPORT
URANIUM