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Production of Biogas from Cassava and Plantain Peels Blended with Cowdung

Nwankwo Joseph Igwe
Department of Applied Microbiology and Brewing, Faculty of Applied Natural Sciences, Enugu State University of Science and Technology, P.M.B.01660 Independence Layout, Enugu, Nigeria
Abstract—This research work centers on biogas production from cassava and plantain peels blended with cow dung. Two digesters were charged with cassava peels alone and plantain peels blended with cow dung respectively. This was done in metal prototype digesters of 5 L capacity in the ratio of 2:1 of water to waste for both. The anaerobic digestion process was batch, operated for 35 days under temperature condition of 27°C-32°C for ambient temperature and 32°C-43°C for slurry temperature were recorded daily for a period of 35 days. The cumulative gas production yield of cassava peels were 48.0 dm3 and 72.0 dm3 for plantain peels blended with cow dung. The mean volume of gas per day for the two set ups were 1.3 dm3 and 2.05 dm3 respectively while the lag day period of 21st day and 10th day was obtained respectively. The result revealed that plantain peels blended with cow dung gave the highest yield of biogas and flames easily when compared with cassava peels alone. Care should be taken when handling biogas production because from the microbial analysis alone, it contains pathogenic organisms like Staphylococcus aureus and candida albicans. Other organisms identified includes: Escherichia coli, Streptococcus spp., Penicillum spp., Aspergillus spp. and Saccharomyces spp. 

Index Terms—biogas, cassava, plantain, cowdung, digesters

Cite: Nwankwo Joseph Igwe, "Production of Biogas from Cassava and Plantain Peels Blended with Cowdung," International Journal of Life Sciences Biotechnology and Pharma Research, Vol. 3, No. 4, pp. 201-213, October 2014.
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