Influence of microorganisms on uranium release from mining-impacted lake sediments under various oxygenation conditions. Issue 10 (9th September 2022)

• Record Type: Journal Article
• Authors: Seder-Colomina, Marina; Mangeret, Arnaud; Bauda, Pascale; Brest, Jessica; Stetten, Lucie; Merrot, Pauline; Julien, Anthony; Diez, Olivier; Barker, Evelyne; Billoir, Elise; Poupin, Pascal; Thouvenot, Antoine; Cazala, Charlotte; Morin, Guillaume
• Is Part Of: Environmental science. Volume 24:Issue 10(2022)
• Page Start: 1830
• Page End: 1843
• Publication Date: 2022-09-09
• Subjects: Environmental monitoring -- Periodicals; Biological monitoring -- Periodicals; Environmental chemistry -- Periodicals; 363.7363
• DOI: 10.1039/d2em00104g
• Languages: English
• ISSNs: 2050-7887

Abstract

Abstract : Microbial processes can be involved in the remobilization of uranium (U) from reduced sediments under O2 reoxidation events such as water table fluctuations. Abstract : Microbial processes can be involved in the remobilization of uranium (U) from reduced sediments under O2 reoxidation events such as water table fluctuations. Such reactions could be typically encountered after U-bearing sediment dredging operations. Solid U(iv ) species may thus reoxidize into U(vi ) that can be released in pore waters in the form of aqueous complexes with organic and inorganic ligands. Non-uraninite U(iv ) species may be especially sensitive to reoxidation and remobilization processes. Nevertheless, little is known regarding the effect of microbially mediated processes on the behaviour of U under these conditions.