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A Microbial Fuel Cell (MFC) tool is designed to convert food and human waste into electrical energy using the internet of things (IoT) for temperature and voltage control.

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Representative MFC — matched on the paper’s system type only, not its reactor or geometry.

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What they did

System
MFC

What worked

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Abstract

The increase in world population is in line with the increase in the amount of energy demand, especially electricity. However, the energy used today is still using fossil energy, which one day will run out. Dependence on non-renewable energy causes weak energy resistance, resulting in electricity scarcity. Microbial fuel cells (MFC) can be a new alternative energy source because they can generate electrical energy by utilizing the interactions of bacteria found in nature. To fulfill electricity needs, researchers created a tool that can generate electrical energy by utilizing food waste and human waste as a substrate which is converted into electrical energy through the bioelectrochemical activity of electrons and protons by bacteria. The tool is integrated with the internet of things as an effort to use technology so that it can control temperature and voltage automatically. This research was aimed to determine the design of a tool to convert food waste and human waste into clean renewable electrical energy, determine the working principle of the tool, determine the efficiency of the tool in producing electrical energy, and determine the potential of the tool to meet electricity needs. The research was carried out using 3 variations, namely variation 1 (zinc and cathode), variation 2 (food waste, human waste, and water), variation 3 (carbon, cathode, nutrient broth, electrolyte solution, food waste, and human waste). The tool created is portable with a DC voltage of 12 V to AC 220 V 500 W and the best results are obtained from variation 3 with 26.6 volts from 1.8 liters of food waste and human waste to obtain a voltage efficiency of up to 95%. This tool has the potential to overcome the electrical energy crisis and fulfill people's electricity needs by utilizing food waste and human waste.

Key findings

  • The MFC tool can generate electrical energy by utilizing the interactions of bacteria found in nature.
  • The tool can convert food waste and human waste into clean renewable electrical energy.
  • The tool's efficiency in producing electrical energy is determined, but specific values are not provided.

Keywords

Microbial fuel cellRenewable energyFood wasteElectric potential energyElectricityWaste-to-energy

Identifiers

DOI
10.1149/ma2021-01412050mtgabs
Journal
ECS Meeting Abstracts
Year
2021