DESIGN AND CONSTRUCTION OF A METALLIC BIO-DIGESTER FOR THE PRODUCTION OF BIOGAS FROM COW DUNG

S. O. Jekayinfa; A. O. Adebayo; O. Ogunkunle; S. A. Kareem; C. Olaleye; J. Okoya

S. O. Jekayinfa Department of Agricultural Engineering, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, Oyo State, Nigeria
A. O. Adebayo Department of Agricultural Engineering, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, Oyo State, Nigeria
O. Ogunkunle Department of Agricultural Engineering, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, Oyo State, Nigeria
S. A. Kareem Department of Agricultural Engineering, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, Oyo State, Nigeria
C. Olaleye Department of Agricultural Engineering, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, Oyo State, Nigeria
J. Okoya Department of Agricultural Engineering, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, Oyo State, Nigeria

Keywords: Digester, Cow dung, Anaerobic digestion, Hydraulic retention time, Biogas

Abstract

Biogas production has contributed greatly as an alternative source of fuel power to solving various developing nations’ problems including high dependency on petroleum products. This gives a clear objective why its production is seriously needed, as it plays a significant role in destroying and converting municipal and agricultural wastes into a useful fuel which can be used in homes and on farms for lighting, heating and moving equipment by supplying the fuel power needed This work focused on design and construction of a metallic bio digester for the production of biogas. Cow dung was mixed with water in ratio 1:2 of particulate mass. The experiment was carried out in a metallic digester under mesophilic temperature. The average retention time for the experiment was 30days. The average internal temperature of the biogas digester was 32.3oC. The total volume of biogas produced was 5.208 m3. The concentrations of methane and carbon dioxide in the biogas produced were found to be 59% and 40% respectively. The developed metallic bio-digester has been found to be appropriate for the production of biogas from cow dung at mesophilic temperature.