Abstract : Depending on speciation, U environmental contamination may be spread through the environment or inversely restrained to a limited area. Induction of U precipitation via biogenic or non-biogenic processes would reduce the dissemination of U contamination. To this aim U oxidation/reduction processes triggered by bacteria are presently intensively studied. Using X-ray absorption analysis, we describe in the present article the ability of Cupriavidus metallidurans CH34 and Rhodopseudomonas palustris, highly resistant to a variety of metals and metalloids or to organic pollutants, to withstand high concentrations of U and to immobilize it either through biosorption or through reduction to non-uraninite U(IV)-phosphate or U(IV)-carboxylate compounds. These bacterial strains are thus good candidates for U bioremediation strategies, particularly in the context of multi-pollutant or mixed-waste contaminations. Citation: Llorens I, Untereiner G, Jaillard D, Gouget B, Chapon V, et al. (2012) Uranium Interaction with Two Multi-Resistant Environmental Bacteria: Cupriavidus metallidurans CH34 and Rhodopseudomonas palustris.
https://hal-amu.archives-ouvertes.fr/hal-01560936 Contributor : Virginie ChaponConnect in order to contact the contributor Submitted on : Wednesday, July 12, 2017 - 10:45:15 AM Last modification on : Wednesday, December 15, 2021 - 11:20:15 AM Long-term archiving on: : Thursday, January 25, 2018 - 4:55:53 AM