秸秆的不同预处理方法对发酵产氢的影响  

Effect of Straw Pretreatments on Bio-hydrogen Production

作　　者：刘培旺[1] 袁月祥[1] 闫志英[1] 宋丽[1] 刘晓风[1] 廖银章[1] 贺蓉娜[1] 

机构地区：[1]中国科学院成都生物研究所,成都610041

出　　处：《应用与环境生物学报》2009年第1期125-129,共5页Chinese Journal of Applied and Environmental Biology

基　　金：国家科技支撑计划项目(No.2006BAD07A00);中国科学院项目(No.KSCX2-YW-G-008)资助~~

摘　　要：比较研究了化学预处理、生物预处理以及化学与生物结合预处理方法对秸秆发酵产氢的影响．结果表明，预处理可以将秸秆中相当一部分纤维素和半纤维素水解生成还原糖，其中1％H2SO4对秸秆的水解效果最好，50g秸秆水解可产生16．05g还原糖；经过NaOH和生物结合预处理后的秸秆发酵产氢效果最好，其产氢能力为21．04mLg^-1，是未经预处理秸秆的75倍；最高氢气浓度为57．3％，是未经预处理秸秆的96倍；其产氢的最适pH为4．5～6．0，最佳底物浓度为45-55gL^-1．其发酵过程中的挥发性脂肪酸（VFAs）以乙酸和丁酸为主．The effects of chemical, biological and chemical-biological pretreatments of straw on bio-hydrogen fermentation and production were comparatively studied. The experiments showed that a considerable portion of cellulose and hemicellulose in straw could be hydrolyzed and converted to reducing sugar by the pretreatments. The best hydrolytic result of straw was attained by 1% H2SO4, and 50 g straw could produce 16.05 g reducing sugar by hydrolysis. The maximum bio-hydrogen production was obtained from the straw with NaOH-biological combination pretreatment, and it reached 21.04 mL g^-1, which was 75 times higher than that from the straw without pretreatment. The maximum concentration of H2 was 57.3%, which was 96 times higher than that of the straw with no pretreatment. The optimum pH range was 4.5-6.0, and the optimum substrate concentration ranged between 45 and 55 g L^-1. In the process of fermentation, the VFAs mainly consisted of acetate and butyrate. Fig 4, Tab 4, Ref 15

关 键 词：秸秆 预处理 发酵 生物产氢 

分 类 号：TQ116.2[化学工程—无机化工]