Deep eutectic solvent for lignocellulosic biomass fractionation and the subsequent conversion to bio-based products – A review

[Display omitted] •Application of DES in raw lignocellulosic biomass fractionation and utilization.•Categorization of DES constituents used in lignocellulosic biopolymer fractionation.•Enhanced pretreatment efficiency through integration of DES with existing technology.•Downstream conversion of DES-...

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Bibliographic Details
Published in:Bioresource technology 2020-02, Vol.297, p.122522-122522, Article 122522
Main Authors: Tan, Yee Tong, Chua, Adeline Seak May, Ngoh, Gek Cheng
Format: Article
Language:English
Subjects:
Biomass
Biopolymer fractionation
Biorefinery
Carbohydrate conversion
Cellulose
Green technology
Lignin
Lignin conversion
Solvents
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Summary:[Display omitted] •Application of DES in raw lignocellulosic biomass fractionation and utilization.•Categorization of DES constituents used in lignocellulosic biopolymer fractionation.•Enhanced pretreatment efficiency through integration of DES with existing technology.•Downstream conversion of DES-fractionated products to a variety of bio-products.•Challenges and outlooks for DES utilization in biomass processing. Since the introduction of deep eutectic solvent (DES) in biomass processing field, the efficiency of DES in lignocellulosic biopolymer model compounds’ (cellulose, hemicellulose and lignin) solubilisation and conversion was widely recognized. Nevertheless, DES’s potential for biorefinery application can be reflected more accurately through their performance in raw lignocellulosic biomass processing rather than model compound conversion. Therefore, this review examines the studies on raw lignocellulosic biomass fractionation using DES and the subsequent conversion of DES-fractionated products into bio-based products. The review stresses on three key parts: performance of varying types of DESs and pretreatment schemes for biopolymer fractionation, properties and conversion of fractionated saccharides as well as DES-extracted lignin. The prospects and challenges of DES implementation in biomass processing will also be discussed. This review provides a front-to-end view on the DES’s performance, starting from pretreatment to DES-fractionated products conversion, which would be helpful in devising a comprehensive biomass utilization process.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2019.122522