Bacteria coated cathodes as an in-situ hydrogen evolving platform for microbial electrosynthesis.

ABSTRACT: Hydrogen is a key intermediate element in microbial electrosynthesis as a mediator of the reduction of carbon dioxide (CO₂) into added value compounds. In the present work we aimed at studying the biological production of hydrogen in biocathodes operated at - 1.0 V vs. Ag/AgCl, using a highly comparable technology and CO₂ as carbon feedstock. Ten bacterial strains were chosen from genera Rhodobacter, Rhodopseudomonas, Rhodocyclus, Desulfovibrio and Sporomusa, all described as hydrogen producing candidates. Monospecific biofilms were formed on carbon cloth cathodes and hydrogen evolution was constantly monitored using a microsensor. Eight over ten bacteria strains showed electroactivity and H₂ production rates increased significantly (two to eightfold) compa

SUBMITTER: Perona-Vico E 

PROVIDER: S-EPMC7670457 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature