Reductive Immobilization of U(VI) in Fe(III) Oxide-Reducing Sediments: Analysis of Coupled Microbial-Geochemical Processes in Experimental Reactive Transport Systems.

Technical Information Center Oak Ridge Tennessee

关键词: Uranium;    Sediments;    Iron;    Immobilization;    Microbiology;   

RP-ID  :  DE2005841500

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The purpose of this research was to provide information to DOE on microbiological and geochemical processes underlying the potential use of dissimilatory metal-reducing bacteria (DMRB) to create subsurface redox barriers for immobilization of uranium and other redox-sensitive metal/radionuclide contaminants that were released to the environment in large quantities during Cold War nuclear weapons manufacturing operations. Several fundamental scientific questions were addressed in order to understand and predict how such treatment procedures would function under in situ conditions in the subsurface. These questions revolved the coupled microbial-geochemical phenomena which are likely to occur within a redox barrier treatment zone, and on the dynamic interactions between hydrologic flux and biogeochemical process rates.