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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/864

Title: Generation of Biogas from Cow Dung.
Authors: Onwuliri, F.C.
Onyimba, I.A.
Nwaukwu, I.A.
Keywords: Escherichia coli
Bacillus licheniformis
Clostridium sp.
Issue Date: 23-Nov-2013
Publisher: Journal of Bioremediation and Biodegradation
Citation: Onwuliri FC,Onyimba IA,Nwaukwu IA (2013) Generation Of Biogas From Cow Dung.J Bioremed Bioremed S18: 002. doi:10:4172/2155-6199.S18-002.
Series/Report no.: ;No.18; Pp1-3
Abstract: Four sets of 250 ml conical flasks (A-D), each containing two flasks, were used in triplicates as digesters to determine the possibility of laboratory-scale biogas production from cow dung under four different treatments. Equal volumes of slurry (3 g dung: 10 cm3 water) in the digesters were subjected to anaerobic digestion over a four-week retention period, with weekly measurements of gas yields. Gas was collected by the water displacement method. Flasks A were kept at ambient temperature (25 ± 2°C) and gas was collected over water. The B-flasks were also kept at ambient temperature but gas was collected over lime water. Flasks C were exposed to sunlight outdoors. The D-flasks were kept at 40°C. At the end of the digestion, microbial analyses of the spent slurry were carried out. Gas was produced in digesters A, B and D. The B digesters had the highest total gas yield (15.60 cm3). Differences in total gas yield were significant (p<0.05) for the different treatments. Gas production increased with increase in retention time. Week 4 had the highest percentage gas yield (53.85%) for the B digesters. For the A and D digesters, week 3 and week 2 had the highest percentage gas yields of 41.30% and 39.29%, respectively. The microbial isolates included Bacillus licheniformis, Escherichia coli and Clostridium sp. Cow dung demonstrated a potential for biogas generation.
Description: Conference Proceedings of 4th world congress on Biotechnology
URI: http://hdl.handle.net/123456789/864
Appears in Collections:Plant Science and Biotechnology

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