Feasibility of Bioethanol production from selected Livestock manure
Author Affiliations
- 1Department of Agricultural and Bio-Environmental Engineering, Federal College of Agriculture, Ibadan, Nigeria
- 2Department of Agricultural and Environmental Engineering, University of Ibadan, Ibadan, Nigeria
Res.J.chem.sci., Volume 15, Issue (4), Pages 15-23, October,18 (2025)
Abstract
The study aimed to determine the bioethanol potential of three selected livestock manure. The manure was hydrolysed by dilute H2SO4 (250, 350 and 450 ml) at 100℃ for 30 mins. Maximum reducing sugar (glucose) was obtained from hydrolysis of 20 kg poultry manure by 450 ml H2SO4 at 100℃ for 30 mins. Ethanol was produced from 10, 15 and 20 kg each of cow, pig and poultry manure through biochemical conversion process. Ethanol of 4.0, 6.25 and 10.0 l/kg; 4.5, 6.75 and 10.5 l/kg; and 4.0, 6.5 and 10.25 l/kg were produced from 10, 15 and 20 kg each from cow, pig and poultry manure, respectively. The amount of ethanol produced increases with the quantity of manure applied in all the three samples, which also increases with the concentration of acid used for hydrolysis at 24 hours fermentation time. The hydrolysis process enhanced the quantity of ethanol obtained, as the temperature was high enough to break cellulosic material in the manure. The ethanol was obtained at a cooling temperature of 70-75℃, while at 90.1℃, the distilled liquid turns to steam which may actually lead to reduction in the quantity of ethanol produced. The study shows that the livestock manure has a good reducing sugar potential to produce ethanol. Hence, the bioethanol production substantially reduced the pollution strength of the livestock manure.
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