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Title: Aqueous Complexation Reactions Governing the Rate and Extent of Biogeochemical U(VI) Reduction

The proposed research will elucidate the principal biogeochemical reactions that govern the concentration, chemical speciation, and reactivity of the redox-sensitive contaminant uranium. The results will provide an improved understanding and predictive capability of the mechanisms that govern the biogeochemical reduction of uranium in subsurface environments. In addition, the work plan is designed to: (1) Generate fundamental scientific understanding on the relationship between U(VI) chemical speciation and its susceptibility to biogeochemical reduction reactions. ? Elucidate the controls on the rate and extent of contaminant reactivity. (2) Provide new insights into the aqueous and solid speciation of U(VI)/U(IV) under representative groundwater conditions.
Authors:
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Publication Date:
OSTI Identifier:
895942
Report Number(s):
ERSD-1024842-2006
R&D Project: ERSD 1024842; TRN: US0700553
Resource Type:
Technical Report
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN; Pacific Northwest National Laboratory (PNNL), Richland, WA; Argonne National Laboratory (ANL), Argonne, IL
Sponsoring Org:
USDOE - Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; 54 ENVIRONMENTAL SCIENCES; 59 BASIC BIOLOGICAL SCIENCES; URANIUM; BIOGEOCHEMISTRY; REDUCTION