Selective butyrate production from CO2 and methanol in microbial electrosynthesis - influence of pH DOI Creative Commons
Hui Yao, Meritxell Romans-Casas, Igor Vassilev

et al.

Bioelectrochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 109000 - 109000

Published: May 1, 2025

Methanol assisted microbial electrosynthesis (MES) enables butyrate production from carbon dioxide and methanol using external electricity. However, the effects of operational parameters on formation remain unclear. By running three flat plate MES reactors with fed-batch mode at controlled pH values (5.5, 6 7), present study investigated influence by comparing process performance, community structure, genetic potential. The highest selectivity (87 % basis) rate 0.3 g L-1 d-1 were obtained 6. At 7, a comparable was achieved, yet lower (70 %) accompanied acetate production. Butyrate considerably hindered 5.5, reaching 0.1 d-1, while reached up to 81 %. CO2 consumption increased pH, along more negative cathodic potential redox Furthermore, affected thermodynamical feasibility involved reactions. results metagenomic analyses suggest that Eubacterium callanderi dominated communities all values, which responsible for assimilation via Wood-Ljungdahl pathway likely main producer reverse β-oxidation pathway.

Language: Английский

Challenges and Opportunities of Choosing a Membrane for Electrochemical CO2 Reduction DOI Creative Commons

Helene Rehberger,

Mohammad Rezaei, Abdalaziz Aljabour

et al.

Membranes, Journal Year: 2025, Volume and Issue: 15(2), P. 55 - 55

Published: Feb. 8, 2025

The urgent need to reduce greenhouse gas emissions, particularly carbon dioxide (CO2), has led intensive research into novel techniques for synthesizing valuable chemicals that address climate change. One technique is becoming increasingly important the electrochemical reduction of CO2 produce monoxide (CO), an feedstock various industrial processes. This comprehensive review examines latest developments in electroreduction, focusing on mechanisms, catalysts, reaction pathways, and optimization strategies enhance CO production efficiency. A particular emphasis placed role ion exchange membranes, including cation membranes (CEMs), anion (AEMs), bipolar (BPMs). explores their advantages, disadvantages, current challenges associated with implementation electroreduction systems. Through careful analysis literature, this report aims provide a understanding state-of-the-art methods potential impact sustainable production, special focus membrane technologies.

Language: Английский

Citations

1
Selective butyrate production from CO2 and methanol in microbial electrosynthesis - influence of pH DOI Creative Commons
Hui Yao, Meritxell Romans-Casas, Igor Vassilev

et al.

Bioelectrochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 109000 - 109000

Published: May 1, 2025

Methanol assisted microbial electrosynthesis (MES) enables butyrate production from carbon dioxide and methanol using external electricity. However, the effects of operational parameters on formation remain unclear. By running three flat plate MES reactors with fed-batch mode at controlled pH values (5.5, 6 7), present study investigated influence by comparing process performance, community structure, genetic potential. The highest selectivity (87 % basis) rate 0.3 g L-1 d-1 were obtained 6. At 7, a comparable was achieved, yet lower (70 %) accompanied acetate production. Butyrate considerably hindered 5.5, reaching 0.1 d-1, while reached up to 81 %. CO2 consumption increased pH, along more negative cathodic potential redox Furthermore, affected thermodynamical feasibility involved reactions. results metagenomic analyses suggest that Eubacterium callanderi dominated communities all values, which responsible for assimilation via Wood-Ljungdahl pathway likely main producer reverse β-oxidation pathway.

Language: Английский

Citations

0