Mg^(2+)浓度对混合细菌发酵产氢的影响  

Effect of Mg^(2+) concentration on fermentation hydrogen production by mixed cultures

作　　者：万伟[1] 王建龙[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084

出　　处：《清华大学学报（自然科学版）》2008年第12期2099-2101,共3页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(50325824)

摘　　要：为了得到混合细菌发酵产氢的最佳Mg2+浓度,以10g/L的葡萄糖为底物,进行了间歇实验。结果表明,在反应温度为35℃和初始pH为7.0的条件下,当Mg2+浓度为0~1mg/L时,混合细菌发酵葡萄糖的累积产氢量、比产氢量和生物量随着Mg2+浓度的增加而增加。当Mg2+浓度为1 mg/L时,最大累积产氢量为233.6 mL,单位质量的葡萄糖最大比产氢量为238.9mL/g,单位质量葡萄糖最大生物量为204.0mg/g。Batch tests for fermentation hydrogen production were done with 10 g/L glucose in mixed cultures to obtain the optimal Mg^2＋ concentration. The results show that at 35℃ and an initial pH 7.0, the cumulative hydrogen production, hydrogen yield, and biomass production by mixed cultures increased with increasing Mg^2＋ concentrations of 0 - 1 mg/L. The maximum hydrogen production with a Mg^2＋ concentration of 1 mg/L is 233.6 mL, the hydrogen yield per unit mass glucose is 238.9 mL/g, and the biomass production per unit mass glucose is 204.0 mg/g.

关 键 词：发酵产氢 混合细菌 MG^2+ 比产氢量 

分 类 号：X703[环境科学与工程—环境工程]