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Process optimization for the production of high-concentration ethanol with Scenedesmus raciborskii biomass
被引:30
作者:

Alam, Md. Asraful
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机构:
Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Henan, Peoples R China Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Henan, Peoples R China

Yuan, Tao
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机构:
Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Henan, Peoples R China

Xiong, Wenlong
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机构:
Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Henan, Peoples R China Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Henan, Peoples R China

Zhang, Beixiao
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Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Henan, Peoples R China Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Henan, Peoples R China

Lv, Yongkun
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机构:
Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Henan, Peoples R China Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Henan, Peoples R China

Xu, Jingliang
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机构:
Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Henan, Peoples R China
Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Henan, Peoples R China
机构:
[1] Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Henan, Peoples R China
[2] Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
关键词:
Bioethanol;
Enzymatic hydrolysis;
Fed-batch;
Glucose;
Microalgae;
BIOETHANOL PRODUCTION;
ENZYMATIC-HYDROLYSIS;
MICROALGAL BIOMASS;
SIMULTANEOUS SACCHARIFICATION;
FERMENTATION;
PRETREATMENT;
BIOFUEL;
BIODIESEL;
VISCOSITY;
STRAW;
D O I:
10.1016/j.biortech.2019.122219
中图分类号:
S2 [农业工程];
学科分类号:
0828 ;
摘要:
Scenedesmus raciborskii WZKMT was subjected to fed-batch enzymatic hydrolysis and fermentation to facilitate the saccharification of high-solid-loading substrate for high-concentration ethanol. In this work, process factors affecting enzymatic hydrolysis, including enzyme loading, temperature, pH, and solid loading, were optimized. Results showed that 58.03 g L-1 glucose, 12.57 g L-1 xylose, and 1.45 g L-1 cellobiose were obtained after the enzymatic hydrolysis of 330 g L-1 substrates under the optimal conditions of 30 FPU g(-1) enzyme loading, 50 degrees C, and pH 5.5. Meanwhile, 89.60% yield and 30.43 g L-1 content of ethanol were obtained after the fermentation of 330 g L-1 hydrolysate. The maximum ethanol concentration of 79.38 g L-1 could be achieved through repeated fed-batch process, indicating that S. raciborskii WZKMT is a promising feedstock for ethanol production.
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