光合菌群发酵玉米秸秆水解液产氢

Hydrogen production from the hydrolysate of corn stalk by photosynthetic bacteria group

摘要:

以玉米秸秆水解液作为产氢底物, 研究光合菌群产氢性能。考察了硫酸浓度、固液比、水解时间、水解温度等秸秆水解条件对产氢的影响, 确定了最佳水解条件, 并对不同脱毒方法进行了对比研究。结果表明, 最佳的水解条件为硫酸浓度1%, 固液比1:12, 水解时间0.5 h, 水解温度为110 °C。采用Ca(OH)2脱毒方法的产氢效果要优于其他2种脱毒方法; NH4+在一定浓度范围内对该光合菌群产氢有促进作用。

Abstract:

Hydrogen production of photosynthetic bacteria group was studied using corn stalk hydrolyzate as hydrogen production substrate. The affects of sulfuric acid concentration, solid-liquid ratio, hydrolysis time and hydrolysis temperature on hydrogen production were investigated. The optimum process conditions were as follows: the sulfuric acid concentration was 1%, the solid-liquid ratio was 1:12, the hydrolysis time was 0.5 h and the hydrolysis temperature was 110 °C, respectively. Three hydrolyzate detoxification methods were compared and the method of calcium hydroxide obtained the optimal detoxification effect. NH4+ played a stimulatory role to the hydrogen production within certain concentration.