Enhanced coproduction of hydrogen and methane from cornstalks by a three-stage anaerobic fermentation process integrated with alkaline hydrolysis

被引：46
|
作者：
Cheng, Xi-Yu [1 ,2 ]
Liu, Chun-Zhao [1 ]
机构：
[1] Chinese Acad Sci, Natl Key Lab Biochem Engn, Inst Proc Engn, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2012年 / 104卷
基金：
国家高技术研究发展计划(863计划);
关键词：
Alkaline hydrolysis; Clostridium thermocellum; Cornstalk; Methane fermentation; Two-stage hydrogen fermentation; CORN STOVER; BIOMASS; PRETREATMENT; CELLULOSE;
D O I：
10.1016/j.biortech.2011.10.082
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
A three-stage anaerobic fermentation process including H-2 fermentation I, H-2 fermentation II, methane fermentation was developed for the coproduction of hydrogen and methane from cornstalks. Hydrogen production from cornstalks using direct microbial conversion by Clostridium thermocellum 7072 was markedly enhanced in the two-stage thermophilic hydrogen fermentation process integrated with alkaline treatment. The highest total hydrogen yield from cornstalks in the two-stage fermentation process reached 74.4 mL/g-cornstalk. The hydrogen fermentation effluents and alkaline hydrolyzate were further used for methane fermentation by anaerobic granular sludge, and the total methane yield reached 205.8 mL/g-cornstalk. The total energy recovery in the three-stage anaerobic fermentation process integrated with alkaline hydrolysis reached 70.0%. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：373 / 379
页数：7
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