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Enhanced microalgae-based microbial fuel cell performance using single-chamber photocatalyst air-cathode

Hnin Thandar Myint1, Yuka Yokoi2, Lulu'atul Hamidatu Ulya3

  • 1School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkok 10150, Thailand.

Bioelectrochemistry (Amsterdam, Netherlands)
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Summary
This summary is machine-generated.

Microalgae-based microbial fuel cells (AMFC) show promise for clean energy. Modified graphite-photocatalyst cathodes and parallel electrical connections significantly boost electricity generation, offering a sustainable alternative.

Keywords:
Air cathodeGraphiteMicroalgae-based microbial fuel cellsPhotocatalyst electrodeTitanium dioxide

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Area of Science:

  • Renewable Energy
  • Electrochemistry
  • Environmental Science

Background:

  • Global energy demands and climate change necessitate sustainable alternatives to fossil fuels.
  • Photosynthetic microalgae-based microbial fuel cells (AMFC) offer a promising bio-electrochemical approach for energy generation.
  • Optimization of AMFC components is crucial for enhancing their practical application.

Purpose of the Study:

  • To improve electricity generation in single-chamber AMFCs.
  • To investigate the effect of modified graphite-photocatalyst air cathodes on power output.
  • To evaluate the impact of different electrical configurations (series, parallel, mixed) on AMFC performance.

Main Methods:

  • Fabrication and testing of modified graphite air cathodes using TiO2 and MnO2 photocatalysts.
  • Measurement of power density generated by AMFCs with different cathode modifications.
  • Analysis of AMFC performance under series, parallel, and mixed electrical connections.

Main Results:

  • A 25% TiO2-graphite mixture cathode achieved a power density of 5.56 ± 0.32 mW/m².
  • Fabricated photocatalyst air cathodes significantly enhanced power density.
  • Parallel electrical connection yielded the highest power density (23.82 ± 3.72 mW/m²), while mixed configuration offered balanced output.

Conclusions:

  • Modified graphite-photocatalyst air cathodes are effective in enhancing AMFC power generation.
  • Electrical configuration critically influences AMFC performance, with parallel connections being optimal for maximum power.
  • These findings support the potential of AMFCs as a cost-effective technology for renewable energy recovery.