摘要
为提高细菌降解玉米秸秆产氢能力,实验研究了酸化汽爆预处理、硫酸预处理、氢氧化钠预处理和氨水预处理4种预处理方法对细菌Clostridium sp.X9降解玉米秸秆发酵产氢能力的影响.结果表明,酸化汽爆为最佳的预处理方式.在酸化汽爆预处理条件为硫酸体积分数1%、汽爆温度121℃和汽爆时间2 h时,纤维素降解产氢细菌Clostridium sp.X9利用酸化汽爆玉米秸秆产氢获得的最大产氢率和玉米秸秆降解率分别为6.4 mmol/g和47.8%.液相代谢末端产物主要为丁酸、乙酸和乙醇.
Four different pretreatment methods including steam explosion pretreatment, H2SO4 pretreatment, NaOH pretreatment and NH3· H2O pretreatment were tested to improve biohydrogen production from corn stalk. Clostridium sp. X9 was used to investigate H2 production directly from corn stalks fermentation. Results show that steam explosion pretreatment is the best one. Under the optimal pretreatment conditions （ φ（H2SO4 ） = 1%, 121℃, 2 h）, the maximum yield of H2 is 6.4 mmol/g and degradation rate of corn stalk is 47.8 %. The liquid end-products mainly contain butyrate, acetate and ethanol.
出处
《大连海事大学学报》
EI
CAS
CSCD
北大核心
2008年第2期41-44,52,共5页
Journal of Dalian Maritime University
基金
国家"九七三"重点基础发展规划项目(G2000026402)
国家自然科学基金资助项目(30470054)
关键词
生物制氢
玉米秸秆
预处理
产氢细菌
降解
bio-hydrogen
corn stalks
pretreatment
H2-producing bacteria
degradation
