Establishment of efficient system for bagasse bargaining: Combining fractionation of saccharides, recycling of high-viscosity solvent and dismantling

文献类型： 外文期刊

第一作者： Li, Yihan

作者： Li, Yihan;Kang, Xiheng;You, Zi;Song, Xueping;Li, Kai;He, Tieguang;Su, Tianming;Zhang, Junhua;Li, Yihan;Li, Kai;Zhuang, Xinshu;Zhang, Zhanying;Ragauskas, Arthur J.

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关键词： Sugarcane bagasse; Dismantling; High-viscosity system; Saccharides; Solvent reusing; Solvent reusing

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.0； 五年影响因子：9.5 ）

ISSN： 0960-8524

年卷期： 2024 年 413 卷

页码：

收录情况： SCI

摘要： Sugarcane bagasse (SCB) has a recalcitrant structure, which hinders its component dismantling and subsequent high value utilization. Some organic solvents are favorable to dismantle lignocellulose, but their high viscosity prevents separation of components and reuse of solvents. Herein, ethylene glycol phenyl ether (EGPE)-acid system is used as an example to develop green and efficient methods to dismantle SCB, purify polysaccharides and lignin, and reuse solvents. Results show that dismantling SCB at 130 degrees C, 0.5 % H2SO4, and 100 min can obtain 85.5 % cellulose recovery, 94.1 % hemicellulose removal and 83.7 % lignin removal. Different molecular weight saccharides are separated by membranes filtration and centrifugation, and lignin recovered by antisolvent precipitation. The solvent recovered by distillation, achieving high dismantling efficiency of 89.2 % cellulose recovery, 94.1 % hemicellulose removal and 94.4 % lignin removal after four recycles. Results show a promising approach for the closed-loop process of dismantling lignocellulose, fractionating saccharides, and reusing solvents in high-viscosity systems.

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