Mo₂C-induced hydrogen production enhances microbial electrosynthesis of acetate from CO₂ reduction.

ABSTRACT:

Background

Microbial electrosynthesis (MES) is a biocathode-driven process, in which electroautotrophic microorganisms can directly uptake electrons or indirectly via H₂ from the cathode as energy sources and CO₂ as only carbon source to produce chemicals.

Results

This study demonstrates that a hydrogen evolution reaction (HER) catalyst can enhance MES performance. An active HER electrocatalyst molybdenum carbide (Mo₂C)-modified electrode was constructed for MES. The volumetric acetate production rate of MES with 12 mg cm^-2 Mo₂C was 0.19 ± 0.02 g L^-1 day^-1, which was 2.1 times higher than that of the control. The final acetate concentration reached 5.72 ± 0.6 g L^-1 within 30 days, and cou

SUBMITTER: Tian S 

PROVIDER: S-EPMC6442412 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature