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The study explores the use of Dangke, whole milk, and whey cheese as substrates in Microbial Fuel Cell (MFC) technology, with whey cheese yielding the highest voltage and power density. The MFC using whey cheese substrate achieved a voltage of 998 mV and a power density of 9.23 x 10⁻³ W/m². This suggests that whey cheese, an industrial waste, can be a viable alternative source of electricity.

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What they did

System
MFC

What worked

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Abstract

Microbial Fuel Cell technology using dangke, whole milk, and whey cheese as substrates have been done. Dangke, whole milk, and whey cheese were placed in the anode chamber. As for the cathode chamber, KMnO4 electrolyte solution was used. The two chambers were then connected by a membrane made of a salt bridge. The highest voltage measurement results for dangke, whey cheese, and whole milk substrate were respectifley obtained at 659 mV, 998 mV, and 670 mV. As for the current measurement on each substrate, it was 0.29 mA, 0.37 mA, and 0.23 mA. In general, the measurement results show that the MFC made using whey cheese substrate has the best quality with a power density of 9.23 x 10⁻³ W/m² . Thus, whey cheese which is an industrial waste can be used as an alternative source of electricity by converting organic compounds using microorganisms.

Key findings

  • The highest voltage measurement for Dangke, whey cheese, and whole milk substrates were 659 mV, 998 mV, and 670 mV respectively
  • The current measurements for each substrate were 0.29 mA, 0.37 mA, and 0.23 mA respectively
  • Whey cheese substrate resulted in the highest power density of 9.23 x 10⁻³ W/m²

Keywords

Food scienceSubstrate (aquarium)Whole milkMicrobial fuel cellElectrolyteWhey protein

Identifiers

DOI
10.22487/gravitasi.v21i2.16034
Journal
Gravitasi
Year
2022