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

• Autores: Rojas-Flores, Segundo, De La Cruz-Noriega, Magaly, Cabanillas-Chirinos, Luis, Benites, Santiago M., Nazario-Naveda, Renny, Delfín-Narciso, Daniel, Gallozzo-Cardenas, Moisés, Díaz, Felix, Murga-Torres, Emzon, Rojas-Villacorta, Walter
• Formato: artículo
• Fecha de Publicación: 2023
• Institución: Universidad Autónoma del Perú
• Repositorio: AUTONOMA-Institucional
• Lenguaje: inglés
• OAI Identifier: oai:repositorio.autonoma.edu.pe:20.500.13067/2913
• Enlace del recurso: https://hdl.handle.net/20.500.13067/2913; https://doi.org/10.3390/fermentation9050446
• Nivel de acceso: acceso abierto
• Materia: Agricultural waste; Kiwi waste; Microbial fuel cells; Bioelectricity; https://purl.org/pe-repo/ocde/ford#2.11.04

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.