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This study compares chemical-cathode MFC (CMFC) and aerobic bio-cathode MFC (ABMFC) for treating aged landfill leachate over 45 days. CMFC achieved higher voltage (699.0 mV) and power density (197.7 mW/m³) but lower COD removal (56.5%), while ABMFC produced lower electrical output (459.4 mV, 147.6 mW/m³) but superior contaminant removal (64.3% COD, 58.1% ammonia nitrogen). Both systems demonstrated dual functionality for energy recovery and wastewater treatment, though neither achieved emission standards alone.

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What they did

System
MFC

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Abstract

The effect of cathode type on contaminant removal efficiency and electricity production in disposing leachate was investigated in a self-assembled microbial fuel cell (MFC). When the landfill leachate was treated with the chemical-cathode MFC (CMFC) and aerobic bio-cathode MFC (ABMFC), the maximum output voltages were 699.0 mV and 459.4 mV, the maximum output powers were 197.7 mW m -3 and 147.6 mW m -3 , and the internal resistances were 900 and 700 , respectively. After running the MFCs for 45 days, the COD removal ratios of CMFC and ABMFC were 56.5 % and 64.3 %, the Coulombic efficiencies were 14.3 % and 17.1 %, and the ammonia nitrogen removal ratios were 53.8 % and 58.1 %, respectively.

Keywords

CathodeLeachateContaminationWaste managementPulp and paper industry

Identifiers

DOI
10.15255/kui.2017.013
Journal
Kemija u industriji
Year
2017