Examinando por Autor "Milly Otiniano, Nélida"

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  • Miniatura
    PublicaciónAcceso abierto
    Impact of Dragon Fruit Waste in Microbial Fuel Cells to Generate Friendly Electric Energy
    (MDPI, 2023-03-27) Rojas-Flores, Segundo; Santiago, M. Benites; De La Cruz-Noriega, Magaly; Vives-Garnique, Juan; Milly Otiniano, Nélida; Rojas-Villacorta, Walter; Gallozzo-Cardenas, Moisés; Delfín-Narciso, Daniel; Díaz, Félix
    Pollution generated by the misuse of large amounts of fruit and vegetable waste has become a major environmental and social problem for developing countries due to the absence of specialized collection centers for this type of waste. This research aims to generate electricity in an eco-friendly way using red dragon fruit (pitahaya) waste as the fuel in single-chamber microbial fuel cells on a laboratory scale using zinc and copper electrodes. It was possible to generate voltage and current peaks of 0.46 ± 0.03 V and 2.86 ± 0.07 mA, respectively, with an optimum operating pH of 4.22 ± 0.09 and an electrical conductivity of 175.86 ± 4.72 mS/cm at 8 °Brix until the tenth day of monitoring. An internal resistance of 75.58 ± 5.89 Ω was also calculated with a maximum power density of 304.33 ± 16.51 mW/cm2 at a current density of 5.06 A/cm2, while the FTIR spectra showed a decrease in the initial compounds and endings, especially at the 3331 cm−1 peaks of the O–H bonds. Finally, the yeast-like fungus Geotrichum candidum was molecularly identified (99.59%). This research will provide great opportunities for the generation of renewable energy using biomass as fuel through electronic devices with great potential to generate electricity.
  • Miniatura
    PublicaciónAcceso abierto
    “Impact of Dragon Fruit Waste in Microbial Fuel Cells to Generate Friendly Electric Energy“
    (MDPI, 2023-04-27) Rojas-Flores, Segundo; Santiago M., Benites; De La Cruz-Noriega, Magaly; Vives-Garnique, Juan; Milly Otiniano, Nélida; Rojas-Villacorta, Walter; Gallozzo-Cardenas, Moisés; Delfín-Narciso, Daniel; Díaz, Félix
    “Abstract: Pollution generated by the misuse of large amounts of fruit and vegetable waste has become a major environmental and social problem for developing countries due to the absence of specialized collection centers for this type of waste. This research aims to generate electricity in an eco-friendly way using red dragon fruit (pitahaya) waste as the fuel in single-chamber microbial fuel cells on a laboratory scale using zinc and copper electrodes. It was possible to generate voltage and current peaks of 0.46 ± 0.03 V and 2.86 ± 0.07 mA, respectively, with an optimum operating pH of 4.22 ± 0.09 and an electrical conductivity of 175.86 ± 4.72 mS/cm at 8 ◦Brix until the tenth day of monitoring. An internal resistance of 75.58 ± 5.89 Ω was also calculated with a maximum power density of 304.33 ± 16.51 mW/cm2 at a current density of 5.06 A/cm2 , while the FTIR spectra showed a decrease in the initial compounds and endings, especially at the 3331 cm−1 peaks of the O–H bonds. Finally, the yeast-like fungus Geotrichum candidum was molecularly identified (99.59%). This research will provide great opportunities for the generation of renewable energy using biomass as fuel through electronic devices with great potential to generate electricity.“