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This study explores the use of Microbial Fuel Cells (MFCs) for simultaneous electricity production and wastewater treatment, achieving significant COD removal and power output. The MFCs were fueled with domestic wastewater and bio-catalyzed with anaerobic aged sludge. The results show promise for a sustainable and innovative approach to energy production and pollution control.

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Dual-chamber H-cell MFCRepresentative model
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Representative dual-chamber H-cell — matched on the paper’s reported configuration, not its exact geometry.

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What they did

System
MFC
Substrate
real wastewater
Inoculum
anaerobic mixed consortia

What worked

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Abstract

In order to reduce the environmental pollution associated with the conventional energy sources and to achieve the increased global energy demand, alterative and renewable sustainable energy sources need to be developed. Microbial fuel cells (MFCs) represent a bio-electrochemical innovative technology for pollution control and a simultaneous sustainable energy production from biodegradable, reduced compounds. This study mainly considers the performance of continuous up flow dual-chambers MFC fueled with actual domestic wastewater and bio-catalyzed with anaerobic aged sludge obtained from an aged septic tank. The performance of MFCs was mainly evaluated in terms of COD reductions and electrical power output. Results revealed that the COD removal efficiency up to 89% was obtained for wastewaters having an average initial COD concentration of 350 mg/L. Stabilized power outputs were clearly observed achieving a maximum value of 170 mW/ m².

Key findings

  • COD removal efficiency of up to 89% for wastewaters with an average initial COD concentration of 350 mg/L
  • Stabilized power outputs with a maximum value of 170 mW/m²
  • Effective performance of continuous up-flow dual-chambers MFC

Keywords

Microbial fuel cellRenewable energyWastewaterAnaerobic exerciseSewage treatmentElectricity generation

Identifiers

DOI
10.31026/j.eng.2013.08.08
Journal
Journal of Engineering
Year
2023