Escuela de Ingeniería Mecánica Eléctrica, Universidad Señor de Sipán, Chiclayo 14000, Peru.
Vicerrectorado de Investigación, Universidad Autónoma del Perú, Lima 15842, Peru.
Molecules. 2022 Oct 31;27(21):7389. doi: 10.3390/molecules27217389.
The excessive use of fossil sources for the generation of electrical energy and the increase in different organic wastes have caused great damage to the environment; these problems have promoted new ways of generating electricity in an eco-friendly manner using organic waste. In this sense, this research uses single-chamber microbial fuel cells with zinc and copper as electrodes and pineapple waste as fuel (substrate). Current and voltage peaks of 4.95667 ± 0.54775 mA and 0.99 ± 0.03 V were generated on days 16 and 20, respectively, with the substrate operating at an acid pH of 5.21 ± 0.18 and an electrical conductivity of 145.16 ± 9.86 mS/cm at two degrees Brix. Thus, it was also found that the internal resistance of the cells was 865.845 ± 4.726 Ω, and a maximum power density of 513.99 ± 6.54 mW/m was generated at a current density of 6.123 A/m, and the final FTIR spectrum showed a clear decrease in the initial transmittance peaks. Finally, from the biofilm formed on the anodic electrode, it was possible to molecularly identify the yeast with 99.82% accuracy. In this way, this research provides a method that companies exporting and importing this fruit may use to generate electrical energy from its waste.
化石能源的过度使用和各种有机废物的增加对环境造成了极大的破坏；这些问题促使人们采用环保的方式利用有机废物来产生电能。在这种情况下，本研究使用以锌和铜作为电极、菠萝废料作为燃料（基质）的单室微生物燃料电池。在第 16 天和第 20 天，分别产生了 4.95667±0.54775 mA 和 0.99±0.03 V 的电流和电压峰值，基质在 pH 值为 5.21±0.18 和电导率为 145.16±9.86 mS/cm 的条件下运行，糖度为 2 度。此外，还发现电池的内阻为 865.845±4.726 Ω，在电流密度为 6.123 A/m 时产生最大功率密度为 513.99±6.54 mW/m，最终的傅里叶变换红外（FTIR）光谱显示初始透光峰明显下降。最后，从阳极电极上形成的生物膜中，可以准确地识别出酵母，准确率为 99.82%。这样，本研究为出口和进口这种水果的公司提供了一种利用其废物产生电能的方法。
