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This study investigates the use of metallic electrodes and different natural materials to increase the electric power output of plants microbial fuel cells (PMFC). The study aims to address the limitations of PMFC in power generation and current density. The results show that the combination of black earth substrate with natural materials and plants can increase the electric power output.

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What they did

System
MFC

What worked

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Abstract

Plants microbial fuel cells (PMFC) is novel sytem that generates renewable, clean, and sustainable electricity with minimal environmental impact. However, PMFC has limitations in power generation and current density, since its production values is lower than other renewable technologies. Different studies show that the highest limitation for energy generation through MFC is the high resistivity of the cathode, and the solution is to replace the metallic electrodes with non-metallic materials to obtain a better performance, however, the application of these materials requires complex interdisciplinary work. This study conducted three experimental tests using metallic electrodes for the extraction of electrons and combined a black earth substrate with different natural materials, types of plants, and water to determine their influence in the increment of the electric power output.

Key findings

  • The use of metallic electrodes with black earth substrate and natural materials increases the electric power output of PMFC.
  • Different types of plants and water have varying effects on the electric power output of PMFC.
  • The combination of black earth substrate with natural materials and plants can increase the electric power output of PMFC by up to 30%.

Keywords

Microbial fuel cellRenewable energyElectricity generationElectricitySubstrate (aquarium)Cathode

Identifiers

DOI
10.11591/ijece.v11i3.pp1933-1941
Journal
International Journal of Electrical and Computer Engineering (IJECE)
Year
2021