Deep eutectic solvents' ability to solubilize lignin, cellulose, and hemicellulose; thermal stability; and density

被引：294

作者：

Lynam, Joan G. ^{[1
]}

Kumar, Narendra ^{[1
]}

Wong, Mark J. ^{[2
]}

机构：

[1] Louisiana Tech Univ, Dept Chem Engn, POB 10348,600 Dan Reneau Dr, Ruston, LA 71272 USA

[2] Univ Nevada, Dept Chem & Mat Engn, 1664 N Virginia St,MS0170, Reno, NV 89557 USA

来源：

BIORESOURCE TECHNOLOGY | 2017年 / 238卷

基金：

美国食品与农业研究所;

关键词：

Loblolly pine; Biomass; TGA; Enzymatic hydrolysis; Glucose yield; IONIC LIQUID; LACTIC-ACID; BIOMASS; TEMPERATURE; PRETREATMENT; MIXTURES; AGRICULTURE; BIOFUELS;

D O I：

10.1016/j.biortech.2017.04.079

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

An environmentally-friendly method to separate cellulose and hemicelluloses from lignin in recalcitrant biomass for subsequent conversion is desirable to reduce greenhouse gas generation. Easily-prepared, deep eutectic solvents (DESs) have low volatility, wide liquid range, non-flammability, nontoxicity, biocompatibility, and biodegradability. This study shows the DESs (formic acid: choline chloride, lactic acid: choline chloride, acetic acid: choline chloride, lactic acid: betaine, and lactic acid: proline) to be capable of preferentially dissolving lignin at 60 degrees C. Thermogravimetric analysis show DES to be stable at typical biomass processing temperatures. Pretreating loblolly pine in one DES increased glucose yield after enzymatic hydrolysis to more than seven times that of raw or glycerol-pretreated pine. The density of DES-pretreated biomass was found to be 40% higher than the untreated pine's density. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：684 / 689

页数：6

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