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This study compares the power generation of Klebsiella variicola and anaerobic sludge in double chamber MFCs using municipal wastewater, finding that Klebsiella variicola generates significantly higher power.

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What they did

System
MFC

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Abstract

The main aim of this study is to compare the power generation of Klebsiella variicola and anaerobic sludge operated double chamber MFC (DMFC) using municipal wastewater. Materials and methods: The wastewater samples collected from MFC with Klebsiella variicola (N=32) and anaerobic sludge (N=32) operated for 10 days (G power 80%). Voltage was measured using a multimeter and current, power, and power density was calculated from it for both groups. Results: The power generation was found to be high in Klebsiella variicola (1230mW/m 2 ) operated MFC compared to anaerobic sludge (120mW/m 2 ) due to its ability to form efficient biofilm on the anode surface compared to anaerobic sludge. The Independent sample T test was done which showed that the Klebsiella variicola operated MFC power generation (p<0.001), found to be significantly higher compared to anaerobic sludge. Conclusion: The study shows that Klebsiella variicola operated MFC is able to achieve higher power generation compared to anaerobic sludge.

Key findings

  • Klebsiella variicola generated 1230mW/m² of power, significantly higher than anaerobic sludge (120mW/m²)
  • Klebsiella variicola formed efficient biofilm on the anode surface, contributing to its higher power generation
  • Independent sample T test showed that Klebsiella variicola operated MFC power generation was significantly higher (p<0.001) compared to anaerobic sludge

Keywords

Microbial fuel cellAnaerobic exerciseWastewaterElectricity generationPulp and paper industryEffluent

Identifiers

DOI
10.1149/10701.13993ecst
Journal
ECS Transactions
Year
2022