Anode Modification with Fe₂O₃ Affects the Anode Microbiome and Improves Energy Generation in Microbial Fuel Cells Powered by Wastewater.

ABSTRACT: This study investigated how anode electrode modification with iron affects the microbiome and electricity generation of microbial fuel cells (MFCs) fed with municipal wastewater. Doses of 0.0 (control), 0.05, 0.1, 0.2, and 0.4 g Fe₂O₃ per the total anode electrode area were tested. Fe₂O₃ doses from 0.05 to 0.2 g improved electricity generation; with a dose of 0.10 g Fe₂O₃, the cell power was highest (1.39 mW/m²), and the internal resistance was lowest (184.9 Ω). Although acetate was the main source of organics in the municipal wastewater, propionic and valeric acids predominated in the outflows from all MFCs. In addition, Fe-modification stimulated the growth of the extracellular polymer producers Zoogloea

SUBMITTER: Nosek D 

PROVIDER: S-EPMC9916399 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature