Assessing dilute acid pretreatment of different lignocellulosic biomasses for enhanced sugar production

Zhang, Zhanying, Vancov, Tony, Mackintosh, Shane, Basu, Biswajit, Lali, Avindal, Qian, Guangren, Hobson, Philip, & Doherty, William O.S. (2016) Assessing dilute acid pretreatment of different lignocellulosic biomasses for enhanced sugar production. Cellulose. (In Press)

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In this study, dilute acid pretreatment of five biomass feedstocks viz., sugarcane trash, sugarcane bagasse, rice straw, corn stover and palm empty fruit bunch were compared at a given combined severity factor (CSF) range of 1.4–3.2 and were characterised using an alternative Simons’ staining dye—Direct Yellow 11 fraction (DY 11, molecular weight >100,000) to better understand the correlations of pretreatment effectiveness with biomass physicochemical properties and pretreatment conditions. Good polynomial correlations (n = 2) of CSF were obtained with hemicellulose removal, cellulose digestibility and glucose yield resulting in R2 > 0.95. The results show that the total contents of extractives and ash have negative impacts on dilute acid pretreatment. Simons’ staining results show that DY 11 can also be used to estimate cellulose accessibility to cellulase enzymes. Good linear correlations of maximum adsorption capacity of DY 11 with CSF (R2 = 0.87–0.99) and cellulose digestibility (R2 = 0.91–0.99) were observed for most of the pretreated biomass samples.

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ID Code: 98329
Item Type: Journal Article
Refereed: Yes
Keywords: Dilute acid, Pretreatment, Simons’ staining, Cellulose digestibility, Severity factor
DOI: 10.1007/s10570-016-1043-6
ISSN: 1572-882X
Divisions: Current > Research Centres > Centre for Tropical Crops and Biocommodities
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2016 Springer Science+Business Media Dordrecht
Copyright Statement: The final publication is available at Springer via
Deposited On: 25 Aug 2016 23:15
Last Modified: 29 Aug 2016 16:17

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