Cellulose-hydrogen production from corn stalk biomass by anaerobic fermentation  

作　　者：XING Yan MA HongCui FAN YaoTing HOU HongWei CHEN JingRun 

机构地区：[1]Department of Chemistry, Zhengzhou University, Zhengzhou 450052, China

出　　处：《Chinese Science Bulletin》2009年第8期1434-1441,共8页

基　　金：Supported by the National Basic Research Program of China (Grant Nos.2009CB220005 and 2006CB708407);the National Natural Science Foundation of China (Grant Nos.90610001 and 20871106);Energy and Technology Program from Zhengzhou University

摘　　要：Cellulose-hydrogen production from corn stalk by lesser panda manure was carried out in batch tests and a 5 L scale-up continuously stirred anaerobic bioreactor(CSABR),respectively.The bio-pretreatment of corn stalk was found most effective at 25℃ using microbe additive of 7.5 g/kg,in which the yields of soluble saccharides(SS) and lactic acid were 212 mg/g-TS and 21 mg/g-TS,respectively.The maximum cumulative H2 yield(176 ml/g-TS) and H2 production rate(14.5 ml/g-TS h-1) were obtained at pH 5.5,36℃ by treating a substrate of 15 g/L.The hydrogen content in biogas was 57.2% and there was no significant methane gas observed.During the optimal period of H2 production,the ORP values stayed in the lower level ranging from -445 mV to -455 mV.The results show that the bio-pretreatment of the raw materials played a vital role in the effective conversion of corn stalk into cellulose-hydrogen by mixed culture.Cellulose-hydrogen production from corn stalk by lesser panda manure was carried out in batch tests and a 5 L scale-up continuously stirred anaerobic bioreactor （CSABR）, respectively. The bio-pretreat- ment of corn stalk was found most effective at 25℃ using microbe additive of 7.5 g/kg, in which the yields of soluble saccharides （SS） and lactic acid were 212 mg/g-TS and 21 mg/g-TS, respectively. The maximum cumulative H2 yield （176 ml/g-TS） and H2 production rate （14.5 ml/g-TS h-1） were obtained at pH 5.5, 36℃ by treating a substrate of 15 g/L. The hydrogen content in biogas was 57.2% and there was no significant methane gas observed. During the optimal period of H2 production, the ORP values stayed in the lower level ranging from -445 mV to -455 mV. The results show that the bio-pretreatment of the raw materials played a vital role in the effective conversion of corn stalk into cellulose-hydrogen by mixed culture.

关 键 词：玉米秸秆 纤维素 厌氧发酵 生产 生物质 厌氧生物反应器 生物预处理 微生物添加剂 

分 类 号：S816.53[农业科学—饲料科学] O636.11[农业科学—畜牧学]