Comparison of Leachate and Mixed Waste Generated Electricity in Compost Solid Phase Microbial Fuel Cells (CSMFCs)
Ganjar Samudro, Syafrudin, Irawan Wisnu Wardana, Tsuyoshi Imai

1 Department of Environmental Engineering, Faculty of Engineering, Universitas Diponegoro 50275, Indonesia
2 Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi 755-8611, Japan

Abstract

This study was conducted to compare between leachate and mixed waste produced electricity as one of the performance parameters of Compost Solid Phase Microbial Fuel Cells (CSMFCs) besides complying with compost requirements. Mixed waste as solid-phase produced from composting has higher potency to obtain electricity than leachate as the liquid phase. Composting of mixed waste was applied in CSMFCs reactor utilizing two anodes placed on leachate chamber at the bottom of the reactor and mixed waste at half of the reactor height and 1 cathode at above of two-third reactor height for electron transfer that its condition was adjusted on more or less 60% of moisture content, seven times of turning frequency, and 50:1 of initial C/N ratio during 23 days process running. The result shows that electrical production in mixed waste is a little more than leachate means that leachate and mixed waste produce the same result on power density as a total value of electricity, but the different of those in electrical production is that mixed waste produces more faster than leachate due to the first exposed electron, the faster-producing electricity

Keywords: CSMFCs, leachate, mixed waste, composting

Topic: Energy Conservation and Efficiency