ANALISIS SIGNIFIKANSI PENGARUH KALIUM PERMANGANAT (KMnO₄) TERHADAP KINERJA KELISTRIKAN MICROBIAL FUEL CELL (MFC) BERBASIS AIR LINDI

Ranisa Oktaviyanti

doi:10.23960/jitet.v14i3.11142

Ranisa Oktaviyanti
Universitas Sultan Ageng Tirtayasa

DOI: https://doi.org/10.23960/jitet.v14i3.11142

Keywords Leachate, Potassium Permanganate, Microbial Fuel Cell, Electrical Performance, Statistical Significance

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Abstract

Leachate contains organic matter that can potentially be utilized as a substrate in a Microbial Fuel Cell (MFC) system for electricity generation. One factor influencing MFC performance is the electrochemical reaction at the cathode, including the use of potassium permanganate (KMnO₄) as an electron acceptor. This study aimed to analyze the significance of KMnO₄ addition on the electrical performance of a leachate-based MFC. A dual-chamber MFC was operated for seven days under two conditions: without and with KMnO₄ addition. The evaluated parameters included voltage, current, power, and power density. Data were analyzed using mean values, standard deviations, and p-values at a significance level of α = 0.05. The results showed that KMnO₄ addition produced significant differences in voltage, power, and power density. Voltage increased from 176.057 ± 26.468 mV to 487.468 ± 92.948 mV, power increased from 14.656 ± 4.028 mW to 42.268 ± 12.270 mW, and power density increased from 4,441.208 ± 1,220.535 mW/m² to 12,808.617 ± 3,718.140 mW/m² (p < 0.001). In contrast, current showed no significant difference (p = 0.1636). Therefore, KMnO₄ significantly improved MFC electrical performance, particularly voltage, power, and power density.

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