Biogas Production from Agricultural Wastes and Kigelia Africana Leaves: A Sustainable Approach for Renewable Energy Generation

Abstract

Biogas, derived from organic waste treatment, harnesses methane for clean energy, reducing waste and bolstering economic sustainability. In this study we evaluate the physiochemical analysis of the waste samples, generated biogas from a well design biodigester, purified the biogas generated and characterize both the untreated and treated biogas. The physicochemical analysis was carried out using a standard method, the gases were characterized using of GC-MS. The result of the physicochemical analysis of the domestic wastes includes; Moisture content (55.2- 59.2 %), Total solid (40.8- 44.7 %), Volatile solid (76.5- 80.1%) and Carbon content (41.7- 44.7%). The untreated biogas generated revealed CH₄ (61.2 %), CO₂ (36.7 %), CO (1.3 %), NH₃ (0.5 %), and H₂S (0.3 %) with a calorific value of 23.41 MJ/ m³, while the treated biogas revealed CH₄ (70 %), CO₂ (28 %), CO (1.3 %), NH₃ (0.5 %), H₂S (0.2 %) with a calorific value of 26.78 MJ/ m³. In addition, the production and use of biogas contribute to sustainability by providing access to contemporary, clean energy that is dependable, as well as by reducing emissions and reducing climate change's effects.