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This study compares power generation from restaurant wastewater treatment using MFCs under mesophilic and thermophilic conditions, finding that thermophilic conditions produce significantly higher power generation.

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What they did

System
MFC

What worked

Power density642mW/m²

Abstract

The major aim of this study is to compare the power generation of dual microbial fuel cells (MFC) operated with mesophilic conditions and thermophilic conditions using restaurant wastewater. Materials and methods: Restaurant wastewater samples were collected from MFC with thermophilic conditions (N=14) and mesophilic conditions (N=14) 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 MFC operated with thermophilic conditions (642 mW/m 2 ) compared to mesophilic conditions (192 mW/m 2 ). The independent sample T-test was done which showed that the power generation of MFC operated with thermophilic conditions (p < 0.001) found to be significantly higher compared with MFC operated with mesophilic conditions. Conclusion: The study shows that MFC operated with thermophilic conditions are able to achieve higher power generation compared to mesophilic conditions.

Key findings

  • Power generation was higher in MFCs operated with thermophilic conditions (642 mW/m²) compared to mesophilic conditions (192 mW/m²).
  • The independent sample T-test showed that power generation in thermophilic conditions was significantly higher (p < 0.001) compared to mesophilic conditions.
  • The study suggests that MFCs operated with thermophilic conditions are more effective for power generation from restaurant wastewater.

Keywords

MesophileThermophileMicrobial fuel cellWastewaterPulp and paper industryElectricity generation

Identifiers

DOI
10.1149/10701.14017ecst
Journal
ECS Transactions
Year
2022