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Effect of LHW, HCl, and NaOH pretreatment on enzymatic hydrolysis of sugarcane bagasse: sugar recovery and fractal-like kinetics

文献类型：期刊论文

作者Zhang, Yu1,2,3; Di, Xiaohui1,2,3,4; Xu, Jingliang1,2,3; Shao, Junchao5; Qi, Wei1,2,3; Yuan, Zhenhong1,2,3
刊名CHEMICAL ENGINEERING COMMUNICATIONS
出版日期2019-06-03
卷号206期号:6页码:772-780
关键词Biofuels cellulase enzymatic hydrolysis of cellulose fractal-like kinetics lignocellulose pretreatment sugar
ISSN号0098-6445
DOI10.1080/00986445.2018.1525365
通讯作者Xu, Jingliang(xjl@ms.giec.ac.cn) ; Qi, Wei(qiwei@ms.giec.ac.cn)
英文摘要Conversion of lignocellulose to sugars involves two main processes, namely pretreatment and enzymatic hydrolysis. Lignocellulose pretreatment leads to the degradation of enzymatic recalcitrance of substrate for achieving efficient saccharification. In this study, liquid hot water (LHW), hydrochloric acid (HCl), and sodium hydroxide (NaOH) were as reagents used to pretreat sugarcane bagasse (SB). Results showed that LHW, HCl, and NaOH pretreatment could solubilize 95.3%, 94.7% xylan and 88.7% lignin, respectively. Enzymatic hydrolysis of pretreated SB showed that the maximum glucose (26.0g/L) and xylose (12.7g/L) concentration were produced by NaOH pretreatment, and slightly more glucose and less xylose were produced after HCl pretreatment compared to LHW pretreatment. Addition of Tween 80 or xylanase could significantly improve both glucose and xylose production. At 48h, the glucose increase for LHW, HC1 and NaOH pretreatment was 38.3%, 26.4% and 8.0%, respectively, and the xylose increase for them was 35.0%, 24.9% and 1.7%, respectively. Fractal-like kinetics showed that the value of rate constant increased after the addition of Tween 80 or xylanase, and the efficiency of enzymatic hydrolysis mainly depended on rate constant other than fractal dimension of substrate. Totally, substrate accessibility was dominated for efficient of lignocellulose to sugar compared to enzyme loading. The application of fractal-like theory on the heterogeneous enzymatic hydrolysis of lignocellulose was quite successful.
WOS关键词HOT-WATER PRETREATMENT ; CORN STOVER ; STRUCTURAL CHARACTERISTICS ; ALKALINE PRETREATMENT ; BIOETHANOL PRODUCTION ; BLACK LIQUOR ; DILUTE-ACID ; CELLULASES ; ADSORPTION ; LIGNIN
资助项目National Natural Science Foundation of China[21506215] ; National Natural Science Foundation of China[21811530626] ; Municipal Science and Technology Program of Guangzhou (China)[201804010081]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000467654100008
出版者TAYLOR & FRANCIS INC
资助机构National Natural Science Foundation of China ; Municipal Science and Technology Program of Guangzhou (China)
源URL[http://ir.giec.ac.cn/handle/344007/24966]  
专题中国科学院广州能源研究所
通讯作者Xu, Jingliang; Qi, Wei
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.CAS Key Lab Renewable Energy, Guangzhou, Guangdong, Peoples R China
3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou, Guangdong, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
5.Guangzhou Foreign Language Sch, Guangzhou, Guangdong, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Yu,Di, Xiaohui,Xu, Jingliang,et al. Effect of LHW, HCl, and NaOH pretreatment on enzymatic hydrolysis of sugarcane bagasse: sugar recovery and fractal-like kinetics[J]. CHEMICAL ENGINEERING COMMUNICATIONS,2019,206(6):772-780.
APA Zhang, Yu,Di, Xiaohui,Xu, Jingliang,Shao, Junchao,Qi, Wei,&Yuan, Zhenhong.(2019).Effect of LHW, HCl, and NaOH pretreatment on enzymatic hydrolysis of sugarcane bagasse: sugar recovery and fractal-like kinetics.CHEMICAL ENGINEERING COMMUNICATIONS,206(6),772-780.
MLA Zhang, Yu,et al."Effect of LHW, HCl, and NaOH pretreatment on enzymatic hydrolysis of sugarcane bagasse: sugar recovery and fractal-like kinetics".CHEMICAL ENGINEERING COMMUNICATIONS 206.6(2019):772-780.

入库方式： OAI收割

来源：广州能源研究所

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