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Biological saccharification by Clostridium thermocellum and two-stage hydrogen and methane production from hydrogen peroxide-acetic acid pretreated sugarcane bagasse

文献类型： 外文期刊

作者： An, Qian 1 ; Bu, Jie 1 ; Cheng, Jing-Rong 3 ; Hu, Bin-Bin 4 ; Wang, Yu-Tao 5 ; Zhu, Ming-Jun 1 ;

作者机构： 1.South China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Biol & Biol Engn, Guangzhou 510006, Peoples R China

2.South China Univ Technol, Guangdong Prov Engn & Technol Res Ctr Biopharmace, Guangzhou Higher Educ Mega Ctr, Guangzhou 510006, Peoples R China

3.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Key Lab Funct Foods, Minist Agr,Guangdong Key Lab Agr Prod Proc, Guangzhou 510610, Peoples R China

4.Yunnan Acad Tobacco Agr Sci, Kunming 650021, Yunnan, Peoples R China

5.Kashi Univ, Coll Life & Geog Sci, Kashi 844000, Peoples R China

6.Kashi Univ, Key Lab Biol Resources & Ecol Pamirs Plateau Xinj, Kashi 844000, Peoples R China

关键词： Clostridium thermocellum; Saccharification; Thermoanaerobacterium thermosaccharolyticum; Hydrogen

期刊名称：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY （ 影响因子：5.816； 五年影响因子：5.242 ）

ISSN： 0360-3199

年卷期： 2020 年 45 卷 55 期

页码：

收录情况： SCI

摘要： The present work aimed at establishing an efficient degradation and energy recovery system form sugarcane bagasse (SCB) through hydrogen peroxide-acetic acid (HPAC) pretreatment, thermophilic hydrogen production and mesophilic methane production. The degradation ratio of HPAC pretreated SCB (HPAC-SCB, 2%, w/v) exceeded 90% under the biological hydrolysis of C. thermocellum without enzyme addition. The hydrogen yield in the co-culture fermentation of T. thermosaccharolyticum and C. thermocellum from HPAC-SCB (2%, w/v) reached 226 mL/g substrate. The long-term hydrogen fermentation was successfully established with 1.59 L/(L.d), 0.159 L/g substrate for average hydrogen productivity and yield, respectively. Methane production of 0.341 L/g COD (chemical oxygen demand) added was recovered by semi-continuous methane fermentation from hydrogen-producing effluent at 12 days of hydraulic retention time (HRT). Average energy recovery of 8.79 MJ/kg SCB was obtained under the optimal conditions. The present work indicated the promising application of the established process in valorization of lignocellulosic bio-waste. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

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