Generation and Analysis of Biogas from Some Animal and Vegetable Wastes

Abstract

The world relies heavily on fossil fuels for both domestic and commercial energy needs but there is an environmental effect of these fossil fuels and as the energy consumption is becoming very significant as there is depletion of the fossil fuels. Research has to be in the development of alternative energy sources. One of the alternative sources of energy is bio-energy. The common fuels obtainable from biomass are bio-ethanol and biogas. This study aims at the production of biogas from biologically degradable wastes by co-digestion system and analyzing the percentage composition of CH4 and CO2 in biogas produced. It involves using fruit (peels and seeds of orange, tomato, cucumber) and vegetable (efo shoko-leafy vegetable) wastes mixed with pig manure in an anaerobic digester. Thus giving an alternative energy source and making the environment cleaner by reducing the green energy gases and wastes. The gas content, therefore, is analysed. The composition of CO2 and CH4 content in biogas generated were CO2 28.1% and CH4 68.9%. Phytochemical screening, proximate analysis of the fruit waste, vegetable waste and the pig waste were carried out. The proximate analyses were carried out for carbohydrates using Anthrone method, Total Lipids Using Bligh & Dyer Method; Crude Fibre, moisture content, total ash, and crude protein method as described by AOAC (1995); The high content of the methane obtained is a high indication that the waste materials used are a good source of biogas generation and can be used to provide a cleaner environment.