In Situ Immobilization of Uranium in Structured Porous Media via Biomineralization at the Fracture/Matrix Interface (FRC Area 2 Field Project)
The original hypothesis of this report is: Radionuclides in low-permeability porous matrix regions of fractured saprolite can be effectively isolated and immobilized by stimulating localized in-situ biological activity in highly-permeable fractured and microfractured zones within the saprolite. The revised hypothesis is: In heterogeneous porous media, microbial activity can be stimulated at interfaces between zones of high and low groundwater flow rates in such a manner as to create a local, distributed redox barrier. Such a barrier will inhibit the transfer of contaminants from the low-flow zones that serve as long-term contaminant sources into the high-flow zones that transport contaminants to receptors.
- Research Organization:
- University of Alabama, Tuscaloosa, Alabama; Oak Ridge National Laboratory, Oak Ridge, Tennessee; Pacific Northwest National Laboratory, Richland, Washington
- Sponsoring Organization:
- USDOE Office of Science (SC)
- OSTI ID:
- 894999
- Report Number(s):
- CONF-NABIR2005-3; TRN: US0700364
- Resource Relation:
- Conference: Annual NABIR PI Meeting, April 18, 2005, Warrenton, VA
- Country of Publication:
- United States
- Language:
- English
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In Situ Immobilization of Uranium in Structured Porous Media via Biomineralization at the Fracture/Matrix Interface
Concept/Hypotheses