Anaerobic Co-Digestion of Faecal Sludge and Banana Peels.
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The abundance of agricultural wastes produced from banana peels and human waste from households has resulted in the difficulties of disposing of large amounts of waste. Anaerobic digestion is a way to reduce waste and generate renewable energy sources including biogas. In this study, banana peels were co-digested with faecal sludge in batch experiments under ambient temperature at 25±5°C at a working volume of 18 liters in 20 liters reactors. The effects of different substrate mix ratios on methane yields were investigated. The batch study was conducted at 8% VS at three different substrate ratio faecal sludge to banana peels (FS: BP) (1:1, 1:2 and 1:3) and a control (1:0). Overall biogas collection at 1:3 ratio of FS:BP resulted into the highest biogas production of 26 liters, followed by 1:3 ratio (C2) with 930 ml biogas yield. The highest methane yield was achieved with reactor C2 of 1:3 ratio (15.21 CH4/g VS). In conclusion, the production of methane from pineapple wastes co-digested with cow dung was proven to be a good strategy to minimize solid wastes mainly pineapple waste.