Anaerobic conversion of Chromolaena odorata (Siam weed) to biogas

Dahunsi, S. O. and Oranusi, S. U. and Efeovbokhan, Vincent Enon and Olayanju, Adeniyi and Zahedi, Soraya and Ojediran, John O. and Izebere, John O. and Aladegboye, O.J. (2018) Anaerobic conversion of Chromolaena odorata (Siam weed) to biogas. Energy Reports, 4. pp. 691-700.

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Abstract

This study evaluated the anaerobic mono-digestion of two different samples of Chromolaena odorata. Combinations of mechanical and thermo-alkaline pretreatments were applied to one of the two samples and labeled as ‘‘X’’ while the second had no thermo-alkaline treatment and was labeled as ‘‘Y’’. The Central Composite Design was used to design the pre treatments. The physicochemical characteristics of the substrates were carried out using standard methods after appropriate pretreatments. From the experimental set-ups, the most probable actual biogas yields in experiments ‘‘X’’ and ’’Y’’ were 0.3554 m3/kg Total Solid (TS)fed and 0.1803 m3/kg TSfed with the desirability of 99 and 100%, respectively. Further shown in the result is a 49.2% higher experimental (actual) biogas yield in experiment ‘‘X’’ over ‘‘Y’’. Gas chromatographic analysis revealed the CH4 and CO2 content of both experiments to be 65±1.5%; 21±3% and 53.5±2.5%; 26±3%, respectively. Combination of different pretreatment methods enhanced enormous biogas yield from the digested substrates. Optimization of the generated biogas data was carried out using the Response Surface Methodology (RSM) and the Artificial Neural Networks (ANNs). The coefficient of determination (R2) for RSM was lower compared to that of ANN. This shows that ANNs

Item Type:	Article
Uncontrolled Keywords:	Anaerobic digestion Lignocellulosic biomass Methane Optimization Pretreatment Siam weed
Subjects:	T Technology > T Technology (General) T Technology > TP Chemical technology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Mrs Hannah Akinwumi
Date Deposited:	17 Dec 2018 11:20
Last Modified:	17 Dec 2018 11:20
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/12222

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