Abstract

This study discusses the determination of the production quality of the Waste Power Plant (WPP). The purpose of this research is to calculate and predict a rough estimate of bio gas production, potential gas emissions and potential estimates of electrical energy generated from determining the quality of landfill gas production. The model is determined as WPP with input of waste volume, gas parameters, weather and the resulting output is quality gas production and electrical energy potential. The parameters used are volume of waste; stockpiling area; gas concentration: CH4; CO2; O2; H2S; and weather. With a constant average condition of waste methane decomposes 64% fast, 14% decomposes slowly, and 22% slowly decomposes. Furthermore, Fuzzy Analytical Hierarchy Process (FAHP) is used to establish the priority weights of the LFG criterion in decision support systems and fuzzy logic is implemented to determine the value of LFG production quality. The research object was carried out at the Jatibarang WPP, Semarang, Indonesia. The results showed that the FAHP can provide an output value of gas quality with an accuracy rate of 79%, with the sanitary landfill model producing a maximum potential of 2.6 MW of electrical energy. Meanwhile, gas emissions released into the air in 2021 are 24,780 tons/year of CH4 and 1,425 tons/year of CO2, while the factors that most influence the quality of LFG gas are: methane gas content, carbon dioxide and weather conditions.