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A study investigated the use of cow rumen as a substrate in microbial fuel cells (MFCs) to generate electricity. The research found that altering the proportion of bovine rumen bacterial substrates and the duration of bacterial incubation affected the power density of MFCs. The study employed a Dual Chamber MFC device with a ceramic-based Proton Exchange Membrane (PEM).

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What they did

System
MFC

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Abstract

The growth in population is not adequately matched by the corresponding increase in energy demand. The imperative for prioritizing the exploration of alternative energy sources that possess attributes of safety, affordability, and ample access to raw materials cannot be overstated. An energy source with significant potential is a microbial fuel cell (MFC)-based energy source. This study aims to investigate the utilization of cow rumen as a substrate and source of nutrition in the bioenergy system of microbial fuel cells (MFCs). The present study aims to investigate the impact of substrate concentration and bacterial incubation duration derived from bovine rumen bacteria on the attainment of optimal power density. The research employed a Dual Chamber Microbial Fuel Cell (MFC) device using a Proton Exchange Membrane (PEM) constructed from ceramic materials. Daily observations were conducted over a period of 30 days. The performance of MFC was assessed utilizing the polarization technique. The findings indicated that altering the proportion of bovine rumen bacterial substrates and the duration of bacterial incubation had an impact on the power density seen in the Microbial Fuel Cell (MFC) system. The optimal conditions were attained when the substrate concentration reached 3640 ppm and after 7 days, resulting in a maximum power density of 864 mW/m².

Key findings

  • Altering the proportion of bovine rumen bacterial substrates affected the power density of MFCs.
  • Increasing the duration of bacterial incubation improved the power density of MFCs.
  • The optimal power density was achieved when using a specific ratio of bovine rumen bacterial substrates and incubation duration.

Keywords

Microbial fuel cellRumenCeramicElectricityElectricity generationWaste management

Identifiers

Journal
Jurnal ILMU DASAR
Year
2024