Articles | Volume 2
https://doi.org/10.5194/sand-2-151-2023
https://doi.org/10.5194/sand-2-151-2023
Conference Abstract
 | 
06 Sep 2023
Conference Abstract |  | 06 Sep 2023

Influence of microbial uranium reduction processes on the final disposal of radioactive waste

Stephan Hilpmann, Isabelle Jeschke, Robin Steudtner, René Hübner, Stefan Schymura, Thorsten Stumpf, and Andrea Cherkouk

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Microscopic and spectroscopic investigations of uranium(VI) reduction by Desulfosporosinus hippei DSM 8344
Stephan Hilpmann, Robin Steudtner, Björn Drobot, René Hübner, Frank Bok, Thorsten Stumpf, and Andrea Cherkouk
Saf. Nucl. Waste Disposal, 1, 155–156, https://doi.org/10.5194/sand-1-155-2021,https://doi.org/10.5194/sand-1-155-2021, 2021
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Short summary
In the context of the safety of a nuclear waste repository, we have investigated the uranium(VI) reduction by different microbial strains from deep geological layers. The results showed significant differences between the reduction behavior of sulfate- and iron-reducing bacteria. The investigated sulfate-reducing microorganism showed a speciation-dependent uranium(VI) reduction. In contrast, the iron reducer was able to reduce different uranium(VI) complexes and showed an uptake of uranium.