Optimizing Biogas Generation from Blends of Sugarcane Bagasse
DOI: https://doi.org/10.33003/jobasr-2023-v1i1-19
Abdulhamid Mohammed.
Isah Yusuf Shinkafi.
Iliyasu Gambo.
Abstract
Renewable energy has been the alternative source to global energy scarcity which
involves renewable resources as more emphasis been put to prospective ways of
converting agricultural wastes into energy to meet both the local and global
demands.This work analyzed the use of sugarcane bagasse as substrate in biogas
production as well as its codigestion with cow dung and chicken droppings. Seven
digesters each of 2.5 litres capacity were charged in a ratio of 1:3 solids to liquid
for a retention period of 30 days within a temperature range of 25-32 oC was used.
Digester A contained 100 % bagasse, B contained 100 % cow dung, C 100 %
chicken droppings, D contained 50 % bagasse and 50 % cow dung, E contained
50 % bagasse and 50 % chicken droppings, F contained 70 % bagasse and 30%
cow dung and 70 % bagasse and 30 % chicken droppings for digester, G.
Proximate and microbial analysis of the spent slurry were carried out. The result
shows that sample C has the highest volatile solids and protein content of 56.68
% and 10.01 %. Biogas production was observed to be higher in digester C with
cumulative gas yield of 3228.3 cm3
then digester B with 2816.6 cm3
and Digester
A had the least gas yield of 681.4 cm3
. Lightening test was observed by passage
over limewater which result in catching fire except on digester C. Methane and
other traces of gases test using gas analyzer shows 61.3 % methane with the least
having 46.7 % methane on digester B and C. Pseudomonas spp, Entrobacter
aerogenes and Staphylococcus aureus were found to be dominant in almost all the
digesters. Further research is required to investigate large volume production and
to improve gas storage techniques.
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