Magnetite Alters the Metabolic Interaction between Methanogens and Sulfate-Reducing Bacteria.

ABSTRACT: It is known that the presence of sulfate decreases the methane yield in the anaerobic digestion systems. Sulfate-reducing bacteria can convert sulfate to hydrogen sulfide competing with methanogens for substrates such as H₂ and acetate. The present work aims to elucidate the microbial interactions in biogas production and assess the effectiveness of electron-conductive materials in restoring methane production after exposure to high sulfate concentrations. The addition of magnetite led to a higher methane content in the biogas and a sharp decrease in the level of hydrogen sulfide, indicating its beneficial effects. Furthermore, the rate of volatile fatty acid consumption increased, especially for butyrate, propionate, and acetate. Genome-centric metagenomics was performed to exp

SUBMITTER: Giangeri G 

PROVIDER: S-EPMC10620991 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature