Deep Eutectic Solvent Extraction of High-Purity Lignin from a Corn Stover Hydrolysate

被引：56

作者：

Cronin, Dylan J. ^{[1
]}

Chen, Xiaowen ^{[2
]}

Moghaddam, Lalehvash ^{[3
]}

Zhang, Xiao ^{[1
,4
]}

机构：

[1] Washington State Univ, Bioprod Sci & Engn Lab, 2710 Crimson Way, Richland, WA 99354 USA

[2] Natl Renewable Energy Lab, 15013 Denver W Pkwy, Golden, CO USA

[3] Queensland Univ Technol, Ctr Trop Crops & Biocommod, GPO Box 2432,2 George St, Brisbane, Qld, Australia

[4] Pacific Northwest Natl Lab, Richland, WA 99354 USA

来源：

CHEMSUSCHEM | 2020年 / 13卷 / 17期

基金：

美国国家科学基金会;

关键词：

corn stover; deep eutectic solvents; depolymerization; lignin; hydrolysis; ENZYMATIC-HYDROLYSIS; LIGNOCELLULOSIC BIOMASS; STRUCTURAL-CHARACTERIZATION; WHEAT-STRAW; PRETREATMENT; FRACTIONATION; DES;

D O I：

10.1002/cssc.202001243

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A lactic acid/chlorine chloride-based deep eutectic solvent (DES) was used for the extraction of high-purity lignin (up to 94.7 %) in high yield (up to 75 %) from the hydrolysis/fermentation residue corn stover hydrolysate (CSH), which was generated from a pilot-plant-scale biorefinery. A range of extraction conditions were investigated, which involved varying reaction temperature, time, and DES composition. The relationship between lignin yield, purity, and structural characteristics with DES treatment conditions was determined. The extraction of high-purity lignin from hydrolysis/fermentation residues presents a promising approach for enhancing the economic feasibility of a lignocellulose biorefinery. It was also determined that DES extraction can produce lignin with a controlled range of molecular weight and functional group content.

引用

页码：4678 / 4690

页数：13

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