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A continuous flow double chamber microbial fuel cell (MFC) for wastewater treatment was constructed. Anaerobic activated sludge was used as bacterial source and simulated organic wastewater was used as substrate.

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What they did

System
MFC

What worked

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Abstract

A continuous flow double chamber microbial fuel cell (MFC) for wastewater treatment was constructed. Anaerobic activated sludge was used as bacterial source and simulated organic wastewater was used as substrate. Effluent of anode chamber was used directly as influent of the cathode chamber. The aerobic microorganisms could degrade organic matters further. The electricity production and organic wastewater treatment of the MFC were studied. The results show that the wastewater chemical oxygen demand (COD) of the total removal rate was 74.1%~77.45%, the anode chamber in which the removal rate of COD is 32.2%~35.3%, and COD removal efficiency of aerobic biological treatment in the cathode chamber was 60.2%~66.7%. The continuous flow system could improve the removal rate further. The maximum current density of MFC was 1.56 mAm-2, the maximum output power was 24.336 mWm-2.

Key findings

  • 1%~77.
  • 45%, the anode chamber in which the removal rate of COD is 32.
  • 2%~35.
  • 3%, and COD removal efficiency of aerobic biological treatment in the cathode chamber was 60.
  • 2%~66.

Keywords

Microbial fuel cellWastewaterChemical oxygen demandAnodeEffluentSewage treatment

Identifiers

DOI
10.4028/www.scientific.net/amr.777.92
Journal
Advanced Materials Research
Year
2013