Improved bioethanol production from corn stover by alkali pretreatment with a novel pilot-scale continuous microwave irradiation reactor
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- 作者：Huadong Peng (1)
Hao Luo (1) (2)
Shengying Jin (3)
Hongqiang Li (1)
Jian Xu (1) - 关键词：corn stover ; continuous microwave irradiation reactor ; biomass pretreatment ; response surface methodology ; cellulosic ethanol
- 刊名：Biotechnology and Bioprocess Engineering
- 出版年：2014
- 出版时间：June 2014
- 年：2014
- 卷：19
- 期：3
- 页码：493-502
- 全文大小：1,128 KB
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Hao Luo (1) (2)
Shengying Jin (3)
Hongqiang Li (1)
Jian Xu (1)
1. National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100-190, China
2. University of Chinese Academy of Sciences, Beijing, 100-049, China
3. Petrochina Planning and Engineering Institute, Beijing, 100-049, China - ISSN：1976-3816
文摘
A novel continuous microwave irradiation (MWI) pilot-scale reactor was designed specifically for biomass pretreatment. To test the efficiency of this reactor, MWI-assisted alkali pretreatment of corn straw (CS) was investigated using a central composite design for the response surface methodology. With a processing capacity of 0.28 kg CS (dry matter, DM)/h, the optimal conditions were as follows: 4.50 kW, 30 min, and 3.50% NaOH (w/v). The glucose and ethanol production from the pretreated CS were 63.22 and 31.29 g/100 g DM, respectively. These values were 4.42 and 3.79 times higher, respectively, than those from untreated CS. Structural changes in the untreated/pretreated CS were identified by analyzing its chemical composition using X-ray diffraction (XRD), scanning electron microscopy (SEM) and fourier transform infrared spectroscopy (FTIR). In addition, the solid residue recovery ratio was demonstrated to be an indicator of the biomass bioconversion potential.