Bioelectrochemical methanation by utilization of steel mill off-gas in a two-chamber microbial ...

@article{2240081,
   author = {Spiess, Sabine and Amaia, Sasiain Conde and Kučera, Jiří and Novák, David and Thallner, Sophie and Kieberger, Nina and Guebitz, Georg M M and Haberbauer, Marianne},
   article_location = {Laussane},
   article_number = {September},
   doi = {http://dx.doi.org/10.3389/fbioe.2022.972653},
   keywords = {bioelectrodes; metagenomic analysis; electromethanogenesis; microbial electrolysis cell; exhaust gas},
   language = {eng},
   issn = {2296-4185},
   journal = {Frontiers in Bioengineering and Biotechnology},
   title = {Bioelectrochemical methanation by utilization of steel mill off-gas in a two-chamber microbial electrolysis cell},
   url = {https://www.frontiersin.org/articles/10.3389/fbioe.2022.972653/full},
   volume = {10},
   year = {2022}
}

TY  - JOUR
ID  - 2240081
AU  - Spiess, Sabine - Amaia, Sasiain Conde - Kučera, Jiří - Novák, David - Thallner, Sophie - Kieberger, Nina - Guebitz, Georg M M - Haberbauer, Marianne
PY  - 2022
TI  - Bioelectrochemical methanation by utilization of steel mill off-gas in a two-chamber microbial electrolysis cell
JF  - Frontiers in Bioengineering and Biotechnology
VL  - 10
IS  - September
SP  - 1-13
EP  - 1-13
PB  - Frontiers Media S.A.
SN  - 22964185
KW  - bioelectrodes
KW  - metagenomic analysis
KW  - electromethanogenesis
KW  - microbial electrolysis cell
KW  - exhaust gas
UR  - https://www.frontiersin.org/articles/10.3389/fbioe.2022.972653/full
N2  - Carbon capture and utilization has been proposed as one strategy to combat global warming. Microbial electrolysis cells (MECs) combine the biological conversion of carbon dioxide (CO2) with the formation of valuable products such as methane. This study was motivated by the surprising gap in current knowledge about the utilization of real exhaust gas as a CO2 source for methane production in a fully biocatalyzed MEC. Therefore, two steel mill off-gases differing in composition were tested in a two-chamber MEC, consisting of an organic substrate-oxidizing bioanode and a methane-producing biocathode, by applying a constant anode potential. The methane production rate in the MEC decreased immediately when steel mill off-gas was tested, which likely inhibited anaerobic methanogens in the presence of oxygen. However, methanogenesis was still ongoing even though at lower methane production rates than with pure CO2. Subsequently, pure CO2 was studied for methanation, and the cathodic biofilm successfully recovered from inhibition reaching a methane production rate of 10.8 L m−2d−1. Metagenomic analysis revealed Geobacter as the dominant genus forming the anodic organic substrate-oxidizing biofilms, whereas Methanobacterium was most abundant at the cathodic methane-producing biofilms.
ER  - 

SPIESS, Sabine, Sasiain Conde AMAIA, Jiří KUČERA, David NOVÁK, Sophie THALLNER, Nina KIEBERGER, Georg M M GUEBITZ a Marianne HABERBAUER. Bioelectrochemical methanation by utilization of steel mill off-gas in a two-chamber microbial electrolysis cell. \textit{Frontiers in Bioengineering and Biotechnology}. Laussane: Frontiers Media S.A., 2022, roč.~10, September, s.~1-13. ISSN~2296-4185. Dostupné z: https://dx.doi.org/10.3389/fbioe.2022.972653.