Reducing Oxygen Stress and Improving Hydrogen Availability Boosts Microbial Electrosynthesis by Clostridium ljungdahlii.

ABSTRACT: Microbial electrosynthesis (MES) holds great promise for converting carbon dioxide (CO₂) into building blocks of the (bio)chemical industry. Its advancement is hindered by limited process control and an incomplete understanding of the oxygen (O₂) stress response of biocatalysts or key engineering parameters like the availability of hydrogen (H₂). With Clostridium ljungdahlii as a model acetogen for strict anaerobic MES from CO₂, the effect of O₂ stress and H₂ availability using 1-L electrobioreactors is showcased, providing high process control and relevance for follow-up engineering and scaling. Using a combinatorial approach of two cathode materials, three anode types, and various current regimes ranging from -5 to -80 mA,

SUBMITTER: Kuchenbuch A 

PROVIDER: S-EPMC12584966 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature