Insight into a single-chamber air-cathode microbial fuel cell for nitrate removal and ecological roles.

ABSTRACT: Bioelectrochemical systems are sustainable and potential technology systems in wastewater treatment for nitrogen removal. The present study fabricated an air-cathode denitrifying microbial fuel cell (DNMFC) with a revisable modular design and investigated metabolic processes using nutrients together with the spatiotemporal distribution characteristics of dominated microorganisms. Based on the detection of organics and solvable nitrogen concentrations as well as electron generations in DNMFCs under different conditions, the distribution pattern of nutrients could be quantified. By calculation, it was found that heterotrophic denitrification performed in DNMFCs using 56.6% COD decreased the Coulombic efficiency from 38.0% to 16.5% at a COD/NO₃ ^--N ratio of 7. Furthermor

SUBMITTER: Jin X 

PROVIDER: S-EPMC11260741 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature