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

Scheibe, Timothy D.

Pacific Northwest National Laboratory (U.S.)

关键词: Uranium;    12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities;    Implementation;    Bioremediation;    59 Basic Biological Sciences;   

DOI  :  10.2172/895877
RP-ID  :  ERSD-1020166-2006
RP-ID  :  None
RP-ID  :  895877

美国|英语

来源: UNT Digital 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 low-permeability 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.