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Title: Raw material effect on hemicellulose extraction yield and molecular weight during hot pressurized water pretreatment by autohydrolysis
Authors: Gallina, Gianluca
Cabeza, Álvaro
Grénman, Henrik
Biasi, Pierdomenico
García-Serna, Juan
Salmi, Tapio
Issue Date: 2018
Citation: The Journal of Supercritical Fluids Volume 133, Part 2, March 2018, Pages 716-725
Abstract: A study on hemicellulose extraction from 10 different tree species was performed using a batchwise operated cascade reactor constituted by 5 units of 200 mL and a buffer vessel of 2000 mL where a flowrate of 150 L h−1 was fully recirculated (close loop operatioin). The experiments were performed at 160 °C, 9 bar and with wood chips particle size of 1.25–2 mm (average solid load of 6.57 g/L). The aim was to identify which wood species were the best candidates to obtain a high yield and/or molecular weight of hemicelluloses. Hydrothermal extractions at different times (from 5 to 80 min) were investigated. The highest yield was obtained with eucalyptus wood (40.3 wt%) after 80 min of extraction. Furthermore, 3 different trends were obtained for molecular weight evolution, where the different tree species can be grouped.
Peer Review: SI
Sponsor: MINECO and FEDER Funds, Project CTQ2015-64892-R (BioFraHynery)
Publisher Version:
Language: eng
Rights: info:eu-repo/semantics/openAccess
Appears in Collections:IPP - Artículos de revista

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