Lignocellulosic biomass pretreatment by deep eutectic solvents on lignin extraction and saccharification enhancement: A review

• Published in: Bioresource technology Vol. 339; p. 125587
• Main Authors: Wang, Wei, Lee, Duu-Jong
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.11.2021
• Subjects: biomass; biorefining; Deep eutectic solvents; energy; fractionation; Lignin; lignocellulose; Lignocellulosic biomass; operating costs; Pretreatment; Saccharification; solvents; Lignin; VAN; AHP; BL; HBD; BP; SA; HY; OA; SE; BBS; TEBAC; Gly; Deep eutectic solvents; X; Y; SL; GA; Pretreatment; BTEAC; US; AA; GH; EG; EACL; EAC; MEA; Saccharification; MW; Lignocellulosic biomass; ChCl; PCA; RB; DES; LA; Cat; PTSA; PEG-200; z; FA; BA
• ISSN: 0960-8524; 1873-2976; 1873-2976
• DOI: 10.1016/j.biortech.2021.125587

•Deep eutectic solvent studies on biomass pretreatment have been reviewed.•Basics of DES fractionation of lignocellulosic biomass have been summarized.•Mechanisms of using DES for biomass fractionation have been discussed.•Prospects and challenges for future works have been outlined. Biomass recalcitrance hinders efficient utilization of lignocellulosic biomass, making pretreatment process a crucial step for successful biorefinery process. Pretreatment processes have been developed for processing biomass, while technical obstacles including intensive energy requirement, high operational cost, equipment corrosions resulted from currently applied techniques promote the development of new pretreatment process for biomass. The deep eutectic solvent (DES) has been recognized as a promising solvent for biomass pretreatment, although the DES application toward biomass is still in its nascent stage. This review summarized the current researches using DES for biomass pretreatment, focusing particularly on lignin extraction and saccharification enhancement of lignocellulosic biomass. The mechanisms for biomass fractionation using DES as agents are introduced. Prospect and challenge were outlined.