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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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.