Lignocellulose fractionation into furfural and glucose by AlCl 3 -catalyzed DES/MIBK biphasic pretreatment

Herein, an efficient DES/MIBK biphasic pretreatment system for preparation of furfural and fermentable glucose from lignocellulose was developed with AlCl as catalysis. The low-cost and renewable DES (Choline chloride-Oxalic acid) served not only as a Brønsted acid catalyst, but also as a pretreatme...

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Bibliographic Details
Published in:International journal of biological macromolecules 2018-06, Vol.117, p.721
Main Authors: Wang, Zhi-Kun, Shen, Xiao-Jun, Chen, Jun-Jie, Jiang, Ying-Qiu, Hu, Zhi-Yan, Wang, Xing, Liu, Li
Format: Article
Language:English
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Summary:Herein, an efficient DES/MIBK biphasic pretreatment system for preparation of furfural and fermentable glucose from lignocellulose was developed with AlCl as catalysis. The low-cost and renewable DES (Choline chloride-Oxalic acid) served not only as a Brønsted acid catalyst, but also as a pretreatment solvent in present work, and MIBK as an extracting reagent which can increase the yield of furfural in DES phase. The effects of this biphasic pretreatment on the furfural yield and saccharification of the lignocellulose before and after pretreatment were explored using HPLC, HAPEC, FT-IR, XRD and SEM. Under the best pretreatment condition (at 140 °C for 90 min), furfural could be obtained in 70.3% yield and 80.8% of the pretreated lignocellulose was saccharified, which was 8.4 times higher than that of the raw lignocellulose without pretreatment. In a word, this pretreatment system can be considered as a potential technique for efficient valorization of lignocellulose for production of furfural and fermentable glucose.
ISSN:1879-0003