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A Microbial Fuel Cell (MFC) was used to treat dairy effluent and generate electricity, achieving a maximum power density of 203 mWm-2 and 81% COD removal efficiency.

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What they did

System
MFC
Substrate
real wastewater

What worked

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Abstract

Abstract Discharge of wastewater containing traces of cow dung from a dairy farm poses significant threat to the environment, which necessitates the effluent treatment. Microbes present in organic rich dairy effluent containing traces of cow dung produced electricity. The performance of Microbial Fuel Cell(MFC) was analyzed by drawing I-V curves and performing electrochemical impedance spectroscopy (EIS). The MFC produced maximum power density of 203 mWm -2 at a current density of 1191 mAm -2 . The Chemical Oxygen Demand (COD) removal efficiency was found to be 81% after 10 days of MFC operation. Decrease in anode polarization resistance confirmed the formation of biofilm at anode surface.

Key findings

  • Maximum power density of 203 mWm-2 at a current density of 1191 mAm-2
  • 81% COD removal efficiency after 10 days of MFC operation
  • Decrease in anode polarization resistance confirmed the formation of biofilm at anode surface

Keywords

Microbial fuel cellEffluentWaste managementElectricity generationPulp and paper industryPower (physics)

Identifiers

DOI
10.21203/rs.3.rs-285485/v2
Journal
Research Square
Year
2023