pH值调控对发酵产氢的影响  

The effect of pH value on fermentative hydrogen production

作　　者：李建昌[1] 张无敌[1] 宋洪川[1] 刘土清[1] 马欢[1] 夏朝凤[1] 

机构地区：[1]云南师范大学省农村能源工程重点实验室,云南昆明650092

出　　处：《能源工程》2004年第6期28-31,共4页Energy Engineering

基　　金：云南省科技厅长基金(2004E0014R);云南省教育厅科学研究基金(04Y786B)

摘　　要：利用厌氧活性污泥作产氢接种物,发酵有机质产生氢气,一般是在酸性条件下进行的。以厌氧活性污泥作接种物,有机酸为基质,在厌氧、恒温25℃、不同的pH值下,启动发酵产氢,以及监测产氢过程中的pH值变化,得出pH值过高时,有大量的甲烷生成,pH值过低时,则对产氢细菌不利,难于产氢。启动发酵产氢时,pH值不宜底于4.3,较为适宜的产氢pH值范围4.5～5.5。To investigate the effect of pH value on fermentative hydrogen production from biomass, under anaerobic conditions, at temperature of 25℃ and by arranging a series of pH value and monitoring the change of pH value during the process of producing-hydrogen, some experiments were carried out with anaerobic digestive sludge as inoculums of hydrogen-producing bacteria and organic acid as fermentative substrates, and it was found that when pH vale is under 4.3, no hydrogen was produced at the beginning. If pH is above 5.5, a lot of methane was generated. The most suitable range of pH is 4.5～5.5.

关 键 词：厌氧 产氢 活性污泥 pH值调控 酸性条件 接种物 有机质 基质 PH值变化 有机酸 

分 类 号：TK6[动力工程及工程热物理—生物能] X703[环境科学与工程—环境工程]