Simulation of the ozone pretreatment of wheat straw

被引：43

作者：

Bhattarai, Sujala ^{[1
]}

Bottenus, Danny ^{[2
]}

Ivory, Cornelius F. ^{[2
]}

Gao, Allan Haiming ^{[1
]}

Bule, Mahesh ^{[1
]}

Garcia-Perez, Manuel ^{[1
]}

Chen, Shulin ^{[1
]}

机构：

[1] Washington State Univ, Dept Biol Syst Engn, Pullman, WA 99164 USA

[2] Washington State Univ, Gene & Linda Voiland Sch Chem Engn & Bioengn, Pullman, WA 99164 USA

来源：

BIORESOURCE TECHNOLOGY | 2015年 / 196卷

基金：

美国国家科学基金会;

关键词：

Wheat straw; Ozone pretreatment; Mathematical modeling; Cuticle hypothesis; OZONOLYSIS PRETREATMENT; ENZYMATIC DIGESTIBILITY; PARTICLE-SIZE; HYDROLYSIS; LIGNIN; WET;

D O I：

10.1016/j.biortech.2015.07.022

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Wheat straw is a potential feedstock in biorefinery for sugar production. However, the cellulose, which is the major source of sugar, is protected by lignin. Ozonolysis deconstructs the lignin and makes cellulose accessible to enzymatic digestion. In this study, the change in lignin concentration with different ozonolysis times (0, 1, 2, 3, 5, 7, 10, 15, 20, 30, 60 min) was fit to two different kinetic models: one using the model developed by Garcia-Cubero et al. (2012) and another including an outer mass transfer barrier or "cuticle'' region where ozone mass transport is reduced in proportion to the mass of unreacted insoluble lignin in the cuticle. The kinetic parameters of two mathematical models for predicting the soluble and insoluble lignin at different pretreatment time were determined. The results showed that parameters derived from the cuticle-based model provided a better fit to experimental results compared to a model without a cuticle layer. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：78 / 87

页数：10

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