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The paper explores continuous microbial fuel cell operation using domestic wastewater, achieving better water treatment and stable power output in trial-2 with low substrate flow rate.

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What they did

System
MFC

What worked

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Abstract

Abstract The microbial fuel cell (MFC) is a device for wastewater treatment with simultaneous power generation. As batch‐mode MFCs are common, the present research work reports on two trials of continuous mode operation of MFCs using domestic wastewater as substrate and sludge as bacterial source. Trial‐2 was carried out with low substrate flow rate. The maximum chemical oxygen demand (COD) reduction during substrate treatment in trial‐1 and 2 was determined. Though the average power output was high in trial‐1, it had a drastically changing trend. Trial‐2 provided better water treatment and non‐fluctuating power output. Thus, it is favorable considering sustainable electricity generation.

Key findings

  • Trial-1 had high average power output but fluctuating trend
  • Trial-2 provided better water treatment and stable power output
  • Maximum COD reduction was determined in both trials

Keywords

Microbial fuel cellChemical oxygen demandElectricity generationWastewaterSewage treatmentElectricity

Identifiers

DOI
10.1002/ceat.202000487
Journal
Chemical Engineering & Technology
Year
2021