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Anaerobic digestion (AD) offers a sustainable approach for biogas generation from municipal solid waste (MSW). This study designed a lab-scale AD system to optimize methane production from rice, vegetable, and mango wastes under varying temperatures (25–36 C) and pH (3.4–7.5). Co-digestion with cow dung was applied, except for mango waste, to enhance microbial activity. Methane production was monitored daily for two weeks, peaking on days 8–9. Maximum yields were 9,560 ppm (rice), 8,320 ppm (vegetable), and 8,236 ppm (mango). Results highlight optimal conditions and microbial interactions for efficient methane recovery from MSW, supporting renewable energy applications.