Biogeochemistry of Oxidation-Reduction Cycling of Uranium and Iron
EMSL Project ID
25408
Abstract
This 2007 EMSL User Proposal has been prepared in response to the Science Theme of Geochemistry/Biogeochemistry and Subsurface Science. This proposal covers future planned collaborative research between Penn State and EMSL and hopes to extend promising results from on-going work. This proposal is aligned with two collaborative projects between the PI (Burgos) and John Zachara of PNNL. One project is funded by the former NABIR program and focused on the biogeochemistry of uranium at the Oak Ridge Field Research Center (FRC). The second project is funded by the DOE/NSF Environmental Molecular Sciences Institutes (EMSI) program and focused on the biogeochemistry of iron in acid mine drainage. While the physical and biogeochemical settings of these two projects vary, there are many common research questions and approaches. Both projects study the kinetics and mechanism of metal-radionuclide reduction and oxidation with pure microbial cultures and natural consortia (experiments performed at Penn State), characterize the biogenic mineral products and mineral-microbe interactions (analyses performed by EMSL staff), and in experiments with natural microbial consortia, characterize the microbial community structure with culture-dependent and nucleic acid-based (DNA, RNA) techniques (performed at Penn State).
Project Details
Project type
Large-Scale EMSL Research
Start Date
2007-05-25
End Date
2009-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Related Publications
Burgos WD, J McDonough, JM Senko, G Zhang, A Dohnalkova, SD Kelly, YA Gorby, and KM Kemner. 2008. "Characterization of uraninite nanoparticles produced by Shewanella oneidensis MR-1 ." Geochimica et Cosmochimica Acta 72(20):4901-4915. doi:10.1016/j.gca.2008.07.016
Peretyazhko, T., J.M. Zachara, J.-F. Boily, Y. Xia, P.L. Gassman, B.W. Arey and W.D. Burgos. 2009. "Mineralogical transformations controlling acid mine drainage chemistry." Chemical Geology. doi:10.1016/j.chemgeo.2009.01.017.