COMPARATIVE EVALUATION OF BIOGAS PRODUCTION POTENTIAL OF PLANTAIN PEELS, COW DUNG, CHICKEN DROPPINGS AND PIGGERY DUNG UNDER ANAEROBIC DIGESTION
Keywords:
Biogas, Plantain Peels, Cow Dung, Chicken Droppings, Piggery Dung, Anaerobic DigestionAbstract
This study comparatively evaluated the biogas production potential of plantain peels, cow dung, chicken droppings and piggery dung under anaerobic digestion. The experiment was conducted using four 60-litre metallic biogas digesters at the National Centre for Energy Research and Development, University of Nigeria, Nsukka, under ambient (uncontrolled) temperature conditions (slurry temperatures of 45.9–47 °C). Each feedstock was mixed with water in waste-to-water ratios (1:2 for cow dung, chicken droppings, and piggery dung, and 1:3 for plantain peels) and digested for 30 days. Parameters such as pH, ambient temperature, slurry temperature, and daily gas yield were monitored. Results showed that gas production commenced on the first day of digestion for all feedstocks, with cow dung exhibiting the highest cumulative biogas yield of 177.5 L, followed by chicken droppings (89.2 L), plantain peels (66.8 L), and piggery dung (59.4 L). The study concluded that cow dung was the highest-yielding feedstock among the substrates tested, on the basis of cumulative gas yield. The findings suggest that readily available agricultural and animal wastes could serve as renewable energy sources and help reduce environmental pollution and dependence on fossil fuels.
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