Open AccessFinal Technical Report
Author(s) -
Patricia A. Sobecky,
Martial Taillefert
Publication year - 2013
Language(s) - English
Resource type - Reports
DOI - 10.2172/1072019
Subject(s) - biomineralization , uranium , environmental chemistry , chemistry , microorganism , environmental science , geology , astrobiology , bacteria , materials science , biology , metallurgy , paleontology
This final technical report describes results and findings from a research project to examine the role of microbial phosphohydrolase enzymes in naturally occurring subsurface microorganisms for the purpose of promoting the immobilization of the radionuclide uranium through the production of insoluble uranium phosphate minerals. The research project investigated the microbial mechanisms and the physical and chemical processes promoting uranium biomineralization and sequestration in oxygenated subsurface soils. Uranium biomineralization under aerobic conditions can provide a secondary biobarrier strategy to immobilize radionuclides should the metal precipitates formed by microbial dissimilatory mechanisms remobilize due to a change in redox state