Pretreatment of corn stover via sodium hydroxide–urea solutions to improve the glucose yield

被引：1

作者：

Shao L. ^{[1
]}

Chen H. ^{[1
]}

Li Y. ^{[1
]}

Li J. ^{[3
]}

Chen G. ^{[1
,2
]}

Wang G. ^{[1
,2
]}

机构：

[1] College of Life Science, Jilin Agricultural University, Jilin

[2] Key Laboratory of Straw Biology and Utilization, Education Ministry of China, Jilin Agricultural University, Jilin

[3] Department of Orthopaedic Surgery, School of Medicine, Stanford University, Stanford, 95306, CA

来源：

Wang, Gang (gangziccc@163.com) | 1600年 / Elsevier Ltd卷 / 307期

关键词：

Biorefinery; Corn stover; Lignocellulose; NaOH/urea;

D O I：

10.1016/j.biortech.2020.123191

中图分类号：

学科分类号：

摘要：

Because of the abundance and renewability of lignocellulosic biomass, lignocellulose-derived biofuels and chemicals are promising alternatives to fossil resources. In this study, we developed a strategy for pretreating lignocellulose (corn stover) using a sodium hydroxide–urea solution (SUs) and evaluated changes in the efficiency and structure. The results showed that treatment with 6% NaOH/12% urea at 80 °C for 20 min gave a glucose yield of 0.54 g/g corn stover. Recycling of the NaOH/urea was also explored, and the average glucose yield over four pretreatment cycles was 0.44 g/g corn stover. The structural characteristics of corn stover were investigated by scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy and gas chromatography-mass spectrometry. Compared with untreated corn stover, NaOH/urea-pretreated corn stover had more micropores, mesopores, and macropores, higher crystallinity, and a higher cellulose content. This pretreatment process is economical and efficient and has good application prospects for lignocellulose biorefinery. © 2020 Elsevier Ltd

引用

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