Sustainability, Journal Year: 2024, Volume and Issue: 16(16), P. 6711 - 6711

Published: Aug. 6, 2024

Microbial fuel cells (MFCs) can realize the conversion of chemical energy to electrical in high-salt wastewater, but easily deactivated cathode seriously affects performance MFCs. To enhance stability and sustainability MFC such circumstances, a bimetallic organic framework ZIF-8/ZIF-67 was utilized for synthesis carbon cage-encapsulated metal catalysts this study. Catalysts with different Co Ce ratio (Co@C (without element), CoCe0.25@C, CoCe0.5@C, CoCe1@C) were employed modify activated cathodes The tests demonstrated that MFCs CoCe0.5@C catalyst obtained highest maximum power density (188.93 mW/m2) smaller polarization curve slope, which boosted electrochemical activity microorganisms attached anode. appropriate addition element conductive catalyst’s active center, is beneficial catalytic performance. Under function catalyst, exhibited superior stable norfloxacin (NOR) degradation efficiency. Even after three cycles, NOR rate remained at 68%, negligible 5.6% lower than initial stage. Furthermore, based on analysis microbial diversity, abundance electrogenic bioanode relatively high as catalyst. This may be because better oxygen reduction reaction (ORR) strengthen metabolic anode microorganisms. ability enhanced environment. paper provides an approach address challenge poor salt tolerance treatment, presents new perspective resource utilization, low emissions, sustainable treatment wastewater.

Language: Английский