Use of Kiwi Waste as Fuel in MFC and Its Potential for Use as Renewable Energy

This research aimed to use kiwi waste as fuel to generate bioelectricity through microbial fuel cells. It was possible to generate an electrical current and voltage peaks of 3.807 ± 0.102 mA and 0.993 ± 0.061 V on day 11, showing an electrical conductivity of 189.82 ± 3.029 mS/cm and an optimum oper...

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Published in:Fermentation (Basel) 2023-05, Vol.9 (5), p.446
Main Authors: Rojas-Flores, Segundo, De La Cruz-Noriega, Magaly, Cabanillas-Chirinos, Luis, Benites, Santiago M., Nazario-Naveda, Renny, Delfín-Narciso, Daniel, Gallozzo-Cardemas, Moisés, Díaz, Felix, Murga-Torres, Emzon, Rojas-Villacorta, Walter
Format: Article
Language:English
Subjects:
agricultural waste
Alternative energy sources
Bacteria
Bioelectricity
Biofilms
Electric currents
Electrical conductivity
Electricity
Electrodes
Food
Food wastes
Fruits
Fuel cells
kiwi waste
Laboratories
microbial fuel cells
Microorganisms
Production processes
Voltage
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Summary:This research aimed to use kiwi waste as fuel to generate bioelectricity through microbial fuel cells. It was possible to generate an electrical current and voltage peaks of 3.807 ± 0.102 mA and 0.993 ± 0.061 V on day 11, showing an electrical conductivity of 189.82 ± 3.029 mS/cm and an optimum operating pH of 5.966 ± 0.121. The internal resistance of the cells was calculated using Ohm’s Law, resulting in a value of 14.957 ± 0.394 Ω, while the maximum power density was 212.68 ± 26.84 mW/m2 at a current density of 4.506 A/cm2. Through the analysis of the FTIR spectra carried out on the substrate, a decrease in the characteristic organic peaks was observed due to their decomposition during the electricity-generation process. In addition, it was possible to molecularly identify the bacteria Comamonas testosteroni, Sphingobacterium sp., and Stenotropho-monas maltophila adhered to the anodized biofilm. Finally, the capacity of this residue to generate bioelectricity was demonstrated by lighting an LED bulb with a voltage of 2.85 V.
ISSN:2311-5637
2311-5637
DOI:10.3390/fermentation9050446