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

ABSTRACT: 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 met

SUBMITTER: Spiess S 

PROVIDER: S-EPMC9500408 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature