Optimization of softwood pretreatment by microwave-assisted deep eutectic solvents at high solids loading

被引：51

作者：

Ceaser, Regan ^{[1
]}

Rosa, Silvia ^{[1
]}

Montane, Daniel ^{[1
]}

Constanti, Magda ^{[1
]}

Medina, Francesc ^{[1
]}

机构：

[1] Univ Rovira & Virgili, Dept Engn Quim, Tarragona 43007, Spain

来源：

BIORESOURCE TECHNOLOGY | 2023年 / 369卷

关键词：

Lignocellulosic biomass; Deep eutectic solvent; Microwave -assisted extraction; Optimization approach; Lignin removal; LIGNIN; EXTRACTION; ACID; DELIGNIFICATION; FRACTIONATION; BIOMASS; STRAW; PURE;

D O I：

10.1016/j.biortech.2022.128470

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Microwave-assisted deep eutectic solvent (DES) has received attention as an ultrafast pretreatment method in lignocellulose fractionation. This study investigated the improvement of milled softwood mixture (MSM) fractionation with chlorine chloride-formic acid (ChCl:FA) to obtain residues with high glucan retention and purity while removing majority of the lignin and hemicelluloses. At the optimum pretreatment conditions i.e., ChCl:FA (1:4), 140 degrees C, 14 min, 800 W and 15 % (w/v), 96.2 % hemicellulose removal, 90.1 % delignification and 93.5 % glucan retention were achieved. About 85 % lignin was recovered with a 95 % purity when solid loading was 10-20 % (w/v). This study showed that microwave assisted ChCl:FA pretreatment was a suitable means to fractionate MSM to achieve high quality glucan and lignin at high solid loading.

引用

页数：9

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