DEVELOPMENT AND PERFORMANCE EVALUATION OF A 20 L BATCH BIODIGESTER FOR BIOGAS PRODUCTION FROM COW AND PIG DUNG UNDER MESOPHILIC CONDITIONS
DOI:
https://doi.org/10.33003/fjs-2026-1007-5259Keywords:
Biogas, Animal Dung, Energy, Biodigester, MicroorganismsAbstract
Biogas technology has emerged as a pivotal solution for waste management, energy generation, and environmental conservation across the globe. This study focused on the development, and construction of a small-scale (20 L) biodigester system for biogas production using cow and pig dung at ratio 1:1 substrate-to-water and operating under mesophilic conditions (25–35 °C). The pH, COD, BOD and TS of cow dung and pig dung were 7.49 and 7.54; 3500 and 2000mg/L; 70 and 160mg/L; 27.7 and 46.2% respectively. The proximate analysis showed moisture content of 8.64% cow dung and 8.52% pig dung, crude fat 1.32 % cow dung and 3.58% pig dung, ash content of 18.62% pig dung and 22.52% cow dung. Nitrogen extract was 29.73% cow dung and 30.72% pig dung. The hydraulic retention time was 30 days and the total biogas produced was 2.180 m3. The gas yield was dependent on the type of substrate and environmental temperature. The results depicted the suitability of using cow and pig dung as substrates for biogas production under natural temperature variations. The findings show that biogas from cow and pig dung is a viable and sustainable cooking fuel. Adopting this technology can reduce reliance on fossil fuels and lower the environmental and health risks associated with their use. Additionally, using inexpensive, locally available materials to build digesters makes this approach practical for resource-limited communities.
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Copyright (c) 2026 Alexander Asanja Jock, Amani David Haruna, Abdulkareem Mikail Alhaji, Yohanna Ukhinenwhe Samuel, Peter Mu’ar Kamtu

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