The effect of straw and blood on biogas production with cow manure

One of the most important factors of industrilization and development is energy. Biogas energy has important potential to be used for supporting energy needs of countries. Biogas consists of methane (CH4) 55-65%, carbon dioxide (CO2) 35- 45%, with the balance being made up of nitrogen (N2), hydrogen (H2) and hydrogen sulphide (H2S). In this study, description and formation of biogas, which is an alternative energy source, are explained and an experimental batch type biogas system is designed to investigate the biogas production at the different experiments. The system consists of one or more digester tanks, a gas holder, a compressor, a mixer, an arrangement of gas pipes, a burner to burn the collected gas. The objective of this project is to build a small scale ?Batch? anaerobic digester and operate with cow wastes and make some experiments to see the effect of mixing and temperature and the dilution of the manure on biogas production. The experiments were conducted at a controled temperature of 28 ± 2 oC. Results showed that the mixed digester produced maximum biogas about 3,115 ± 0,034 m3 from 10 lt fresh-waste and the minumum biogas production was obtained about 2,152 ± 0,049 m3 when the maximum lag time was 57 days at the minumum temperature 20 ± 2 oC. Keywords: Biogas, Anaerobic, Waste, Renewable Energy