Characterization of Biologically Reduced U Particles
EMSL Project ID
3260
Abstract
In collaboration with Dr. Jim Amonette (PNNL, we are working on reduction of Uranium(VI) under sulfate reducing conditions in the presence of iron minerals. U(VI) dissolved in a growth medium was reacted under anoxic conditions with a mixture of hematite and quartz. After reduction by SRB, analysis by U L3-edge XANES spectra of reduced U, both liquid filtrate and associated with solids, yielded typical U(IV) spectra. We want to further characterize reduced U using HR-TEM on samples from the liquid filtrate and associated with solids.
Project Details
Project type
Exploratory Research
Start Date
2003-02-10
End Date
2006-02-12
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
Beyenal H, Sani RK, Peyton BM, Dohnalkova A, Amonette JE, and Lewandowski Z. 2004. Uranium immobilization by sulfate reducing biofilms. Environmental Science and Technology, 38: 2067-2074
Sani R, G Rastogi, J Moberly, A Dohnalkova, TR Ginn, N Spycher, R Shende, and B Peyton. 2010. "The toxicity of lead to Desulfovibrio desulfuricans G20 in the presence of goethite and quartz." Journal of Basic Microbiology 50(2):160-170. doi:10.1002/jobm.200900239
Sani RK, BM Peyton, A Dohnalkova, and JE Amonette. 2005. "Reoxidation of Reduced Uranium with Iron(III) (Hydr)Oxides under Sulfate-Reducing Conditions." Environmental Science and Technology 39(7):2059-2066.
Sani RK, BM Peyton, and A Dohnalkova. 2008. Comparison of uranium(VI) removal by Shewanella oneidensis MR-1 in flow and batch reactors. Water Research 42(12): 2993-3002
TOXIC EFFECTS OF URANIUM ON DESULFOVIBRIO DESULFURICANS G20