Effect of Start-Up Strategies and Electrode Materials on Carbon Dioxide Reduction on Biocathodes.

ABSTRACT: The enrichment of CO₂-reducing microbial biocathodes is challenging. Previous research has shown that a promising approach could be to first enrich bioanodes and then lower the potential so the electrodes are converted into biocathodes. However, the effect of such a transition on the microbial community on the electrode has not been studied. The goal of this study was thus to compare the start-up of biocathodes from preenriched anodes with direct start-up from bare electrodes and to investigate changes in microbial community composition. The effect of three electrode materials on the long-term performance of the biocathodes was also investigated. In this study, preenrichment of acetate-oxidizing bioanodes did not facilitate the start-up of biocathodes. It took about 170 days for

SUBMITTER: Saheb-Alam S 

PROVIDER: S-EPMC5795077 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature