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Biomass Chemical Engineering ›› 2020, Vol. 54 ›› Issue (6): 74-82.doi: 10.3969/j.issn.1673-5854.2020.06.012

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Progress in Organic Solvent Autocatalytic and Synergistic Pretreatment to Promote the Enzymatic Hydrolysis of Lignocellulosic Materials

Yuna KAN, Bingwei CHEN, Shengcheng ZHAI(), Mingzhu PAN, Changtong MEI   

  1. College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
  • Received:2019-10-21 Online:2020-11-30 Published:2020-12-01
  • Contact: Shengcheng ZHAI E-mail:zhais@njfu.edu.cn

Abstract:

The lignocellulosic materials are renewable and abundant in resource, and the natural anti-degradation barrier of the cell wall of lignocellulosic materials could be broken through appropriate pretreatment, which promote its effective conversion to oligosaccharides or fermentable sugars in subsequent processing, and then efficiently preparing bioethanol. Organic solvent pretreatment is considered to be one of the effective pretreatment methods. It can not only improve the enzymatic hydrolysis efficiency but also effectively separate the lignin, which provides the efficient utilization of the components in the lignocellulose. Organic solvent pretreatment can be divided into autocatalytic pretreatment and catalyst-organic solvent synergistic pretreatment, according to adding catalyst or not. Lignin is one of the important factors that limiting the enzymatic hydrolysis of lignocellulosic materials. This paper reviewed the effects of type of organic solvents and catalysts on the removal of lignin. The reaction mechanism of catalyst-organic solvent co-pretreatment also was reviewed.

Key words: lignocellulose, organic solvent, pretreatment, catalyst, enzymatic hydrolysis

CLC Number: