Biogas production from organic waste in Akwa Ibom State of Nigeria

Abstract

In view of the need for environmental management, waste recycling and alternative energy resources, there has been on-going work on biogas production with a locally fabricated digester in Akwa Ibom State of Nigeria. The first resultshows that 0.032 m3 of biogas was produced from 180 l of poultry manure mixed with same volume of moisture in 16 days. Using the same concentration of cow dung in a repeat experiment, 0.015 m3 of biogas was produced in 7 days. There was interruption in the gas production in the second case due to excessive wetness of weather. Further investigation indicated that the volume of gas evolved might also depend on the ambient temperature as shown in the second experiment. A maximum volume of 0.006 m3 was got for the maximum temperature 51 °C and a minimum volume of 0.00 m3 got for the minimum temperature of 22 °C. We also observed that the gas yield with poultry manure was higher than that with cow dung © Springer Science + Business Media B.V. 2009.