Alkali pretreatment and enzymatic enzymatic hydrolysis of Australian timber mill sawdust for biofuel production

Trevorah, R and Othman, M 2015, 'Alkali pretreatment and enzymatic enzymatic hydrolysis of Australian timber mill sawdust for biofuel production', Journal of Renewable Energy, vol. 2015, 284250, pp. 1-9.


Document type: Journal Article
Collection: Journal Articles

Title Alkali pretreatment and enzymatic enzymatic hydrolysis of Australian timber mill sawdust for biofuel production
Author(s) Trevorah, R
Othman, M
Year 2015
Journal name Journal of Renewable Energy
Volume number 2015
Article Number 284250
Start page 1
End page 9
Total pages 9
Publisher Hindawi Publishing Corporation
Abstract This study investigated the potential use of alkali pretreatment of sawdust from Australian timber mills to produce bioethanol. Sawdust was treated using 3-10% w/w NaOH at temperatures of 60, 121, and -20°C. Two pathways of production were trialled to see the impact on the bioethanol potential, enzymatic hydrolysis for glucose production, and simultaneous saccharification and fermentation (SSF) for ethanol production. The maximum yields obtained were at 121°C and -20°C using 7% NaOH, with 29.3% and 30.6% ethanol yields after 0.5 and 24 hr, respectively, these treatments yielded 233% and 137% increase from the 60°C counter parts. A notable trend of increased ethanol yields with increased NaOH concentration was observed for samples treated at 60°C; for example, samples treated using 10% NaOH produced 1.92-2.07 times more than those treated using 3% NaOH. FTIR analysis showed reduction in crystallinity correlating with increased ethanol yields with the largest reduction in crystallinity in the sample treated at -20°C for 24 hr with 7% NaOH.
Subject Agricultural Biotechnology not elsewhere classified
Forestry Biomass and Bioproducts
Automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels)
Keyword(s) Bio-ethanol
bioenergy
lignocellulose
DOI - identifier 10.1155/2015/284250
Copyright notice Copyright © 2015 Raymond Martin Trevorah and Maazuza Z. Othman.
ISSN 2314-4386
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