Fractionation of spent liquor from organosolv-pretreatment using lignin-incompatible extraction

Sun, W, Trevorah, R and Othman, M 2018, 'Fractionation of spent liquor from organosolv-pretreatment using lignin-incompatible extraction', Bioresource Technology, vol. 269, pp. 255-261.


Document type: Journal Article
Collection: Journal Articles

Title Fractionation of spent liquor from organosolv-pretreatment using lignin-incompatible extraction
Author(s) Sun, W
Trevorah, R
Othman, M
Year 2018
Journal name Bioresource Technology
Volume number 269
Start page 255
End page 261
Total pages 7
Publisher Elsevier BV
Abstract Spent liquor, or liquor in short, is the liquid stream resulting from organosolv pretreatment of lignocellulosic materials. The recovery of GVL, lignin and monosaccharide from the liquor is critical for producing value-added products and reducing operating costs. This work presents a new method, referred to as lignin-incompatible extraction, developed for the simultaneous recovery of GVL, lignin and monosaccharides from liquor. This method involves neutralisation of the liquor with calcium carbonate followed by extraction with toluene. Through the lignin-incompatible extraction, 87.6% of GVL was separated from liquor, 89.4% of lignin was precipitated during extraction, and 93.9% of xylose remained in the aqueous fraction. The lignin-incompatible extraction results correlated with the non-dispersion force parameters of the extracting solvent. The precipitated lignin indicated a lower hydrogen bonding ability and recycled GVL proved to have the same effectiveness in organosolv pretreatment in the first two cycles of operation.
Subject Environmental Technologies
Keyword(s) Organosolv pretreatment
Spent liquor
Lignin
GVL
Extraction
DOI - identifier 10.1016/j.biortech.2018.08.097
Copyright notice © 2018 Published by Elsevier Ltd
ISSN 0960-8524
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