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A study was conducted in South Ethiopia with the aim of assessing the technical potential of biogas energy in replacing traditional bioenergy and chemical fertilizers and mitigating greenhouse gas emissions. A household survey with both a quantitative and qualitative approach was employed for data collection. Primary data were gathered from 182 biogas adopters as well as 10 key informants and three group discussions. Secondary data were also collected from different sources. The average biogas production potential of installed biogas plants was 205 m3 per day. The average reduction in use of firewood, charcoal, dung cakes, and crop residues due to biogas adoption was 66%, 72%, 68%, and 89%, respectively. The use of bio-slurry as an organic fertilizer reduced the quantity of chemical fertilizers used by more than 50% per household per year. The reduction in the quantity of biofuel consumption reduced the volume of greenhouse gas emissions by 418 tons of carbon dioxide equivalents per household per year. If the reduced firewood and charcoal use reduced the felling of live trees, this could potentially conserve 45 ha of forest per household per year. Therefore, biogas energy could help reduce the anthropogenic pressure on forest resources by addressing the major drivers of deforestation and forest degradation.

the scientific world journal/thescientificworldjournal

Technical Potential of Biogas Technology to Substitute Traditional Fuel Sources and Chemical Fertilizers and Mitigate Greenhouse Gas Emissions: The Case of Arba-Minch Area, South Ethiopia