In Situ Immobilization of Uranium in Structured Porous Media via Biomineralization at the Fracture/Matrix Interface.

Scheibe, T. D. ; Brooks, S. C. ; Roden, E. E.

Technical Information Center Oak Ridge Tennessee

关键词: Uranium;    Biomineralization;    Aquifers;    Bioremediation;    Contamination;   

RP-ID  :  DE14896023

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Although the biogeochemical processes underlying key bioremediation technologies are increasingly well understood, field-scale heterogeneity (both physical and biogeochemical) remains a major obstacle to successful field-scale implementation. In particular, slow release of contamination from low-permeability regions (primarily by diffusive/dispersive mass transfer) can hinder the effectiveness of remediation. This research aims to evaluate strategies that target bioremediation efforts at interfaces between high- and lowpermeability regions of an aquifer in order to minimize the rate of contaminant transfer into high-permeability (high-flux) zones, and thereby reduce ultimate contaminant delivery to environmental receptors.