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The effect of pH and natural microbial phosphatase activity on the speciation of uranium in subsurface soils


, : The effect of pH and natural microbial phosphatase activity on the speciation of uranium in subsurface soils. Geochimica et Cosmochimica Acta 75(19): 0-5663

The biomineralization of U(VI) phosphate as a result of microbial phosphatase activity is a promising new bioremediation approach to immobilize uranium in both aerobic and anaerobic conditions. In contrast to reduced uranium minerals such as uraninite, uranium phosphate precipitates are not susceptible to changes in oxidation conditions and may represent a long-term sink for uranium in contaminated environments. So far, the biomineralization of U(VI) phosphate has been demonstrated with pure cultures only. In this study, two uranium contaminated soils from the Department of Energy Oak Ridge Field Research Center (ORFRC) were amended with glycerol phosphate as model organophosphate source in.

US$19.90

DOI: 10.1016/j.gca.2011.07.006


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