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Title: Catalytic upgrading of bio-oil from bagasse: Thermogravimetric analysis and fixed bed pyrolysis
Authors: Garba, M.U.
Musa, U.
Olugbenga, A. G.
Mohammad, Y. S.
Yahaya, M.
Ibrahim, A. A
Keywords: Bagasse
Fixed bed reactor
Issue Date: Dec-2018
Publisher: Beni-Suef University journal of basic and applied sciences
Citation: Garba, M. U., Musa, U., Olugbenga, A. G., Mohammad, Y. S., Yahaya, M., & Ibrahim, A. A. (2018). Catalytic upgrading of bio-oil from bagasse: Thermogravimetric analysis and fixed bed pyrolysis. Beni-Suef University journal of basic and applied sciences, 7(4), 776-781.
Abstract: The objective of this work was to upgrade bio-oil from bagasse by pyrolysis using catalyst/biomass of three different compositions (5, 15 and 20 wt% HZSM-5 loadings). The thermal analysis and product distribution experiments were carried out in a thermogravimetric analyzer (TGA) and a fixed bed reactor, respectively. In TGA, the pyrolysis of catalytic runs shifted the thermograph curves to the lower temperatures and generated high yield residues compared to that obtained from non-catalytic run. From a fixed-bed condition, the maximum bio-oil yield from non-catalytic and catalytic runs at a temperature of 500 °C at 15% ZSM-5 catalyst concentration were 49.4% and 21.1 wt% respectively. Aromatics, phenols and oleic acids are the main chemical components deduced from gas chromatography/mass spectrometry (GC–MS) analysis of the bio-oil. Bio-oil from catalytic pyrolysis had more aromatics (desirable component) and less oleic acid (undesirable component) than the bio-oil from non-catalytic pyrolysis. The study of bio-oil from catalytic bagasse pyrolysis enhances desirable component when used as transportation fuel. Besides addition of catalyst improving the degradation mechanism of biomass also alters the product composition closer to the aromatic range hydrocarbon.
Description: The depleting fossil deposits and consequent rise in the price of petroleum produced coupled with the attendant environmental challenges and the drive for serene environment have stimulated the search for alternative and renewable energy source. Currently, biomass constitutes about 14% of the global energy consumptionand known to be fourth largest source of energy after coal, natural gas and petroleum oil (Bridgwater et al., 1996). Biomass is predominantly composed of cellulose, hemicellulose, and lignin as a non-food material. Other compositions of biomass include organic compound (extractive), ash, inorganic compound and hetero-atom (oxygen, hydrogen, sulfur and nitrogen). Although the oxygen and hydrogen contents of biomass are higher than that found in fossil, its low contents of nitrogen and sulfur make them relatively benign and safe to handle. The benign energy resource from biomass via various conversion processes is an epitome of solid (char), liquid (bio-oil) and gaseous fuels, as well as value added chemicals (Garba et al., 2006).
Appears in Collections:Chemical Engineering

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