John Ike Eze, Cynthia chinenye Ezeudu
National Center for Energy Research and Development, University of Nigeria, Nsukka. Enugu State, Nigeria
Department of Food Science and Technology, University of Nigeria, Nsukka. Enugu State, Nigeria
Key words: Biogas production, biogas yield, gas flammability.
Abstract
This study was carried out to evaluate biogas production from animal and food wastes. Five agro-based wastes were differently charged with appropriate water to waste ratios into a five 0.1m3 capacity metallic digesters designed and fabricated at the National Centre for Energy Research and Development University of Nigeria, Nsukka.( each sample to one digester), stirred, with a wooden rod, covered air-tight and allowed to ferment anaerobically for 23 days within the mesophilic temperature range (24 – 330C). The results indicate that cow dung digester gave the highest cumulative biogas yield of 229.2liters(l), followed by swine dung (61.6l), poultry dung (55.3l), cowpea seed coat (50.4l) and plantain peel 44.3l. All the biodigesters produced flammable gas at different days within the period except the cowpea seed coats which were not flammable throughout the experimental periods. The biogas produced from cow dung flamed on the 6th day while that from plantain peels, swine dung and poultry dung flamed on 5th, 9th, and 22nd day respectively. Flammable gas composition analysis from cow dung, poultry dung, swine dung and plantain peel biodigesters showed significant methane content. The overall results indicated that animal wastes, especially cow dung gave the highest biogas yield.
Get the original article in Source: Volume 2, Number 10 (1), October 2012 – IJB
Published By: International Journal of Biosciences (IJB)
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