Issue 10, 2022

Influence of microorganisms on uranium release from mining-impacted lake sediments under various oxygenation conditions

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.

Graphical abstract: Influence of microorganisms on uranium release from mining-impacted lake sediments under various oxygenation conditions

  • This article is part of the themed collection: Geochemistry

Supplementary files

Article information

Article type
Paper
Submitted
10 Mär 2022
Accepted
24 Jul 2022
First published
27 Jul 2022

Environ. Sci.: Processes Impacts, 2022,24, 1830-1843

Author version available

Influence of microorganisms on uranium release from mining-impacted lake sediments under various oxygenation conditions

M. Seder-Colomina, A. Mangeret, P. Bauda, J. Brest, L. Stetten, P. Merrot, A. Julien, O. Diez, E. Barker, E. Billoir, P. Poupin, A. Thouvenot, C. Cazala and G. Morin, Environ. Sci.: Processes Impacts, 2022, 24, 1830 DOI: 10.1039/D2EM00104G

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