Fe^(2+)浓度对生物产氢动力学的影响  

Effect of Fe^(2+) Concentration on Kinetics of Biohydrogen Production

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环境技术研究室,北京100084

出　　处：《环境科学》2008年第9期2633-2636,共4页Environmental Science

基　　金：国家自然科学基金项目(50325824)

摘　　要：研究了Fe2+在0~1 500 mg/L范围内对混合细菌发酵产氢动力学的影响.结果表明,以葡萄糖为底物,在35℃和初始pH为7.0时,当Fe2+浓度为0~300 mg/L时,混合细菌发酵葡萄糖的最大累积产氢量和平均产氢速率都随着Fe2+浓度的增加而增加;当Fe2+浓度为300 mg/L时,最大累积产氢量和平均产氢速率最高,分别为302.3 mL和30.0 mL/h.当Fe2+浓度为0~350mg/L时,比产氢率随着Fe2+浓度的增加而增加,当Fe2+浓度为350 mg/L时,最大比产氢率为311.2 mL/g.修正的Logistic模型能很好地描述累积产氢量随时间的变化规律.修正的Han-Levenspiel模型能很好地描述Fe2+浓度对平均产氢速率的影响.The effect of Fe^2＋ concentration ranging from 0 to 1 500 mg/L on the kinetics of fermentative hydrogen production by mixed microbial culture was investigated. The results showed that, at 35℃ and initial pH 7.0, using glucose as substrate, hydrogen production potential and average hydrogen production rate increased with increasing Fe^2＋ concentration from 0 to 300 mg/L, with the maximum hydrogen production potential of 302.3 mL and maximum average hydrogen production rate of 30.0 mL/h being obtained at Fe^2＋ concentration of 300 mg/L. Hydrogen yield increased with increasing Fe^2＋ concentration from 0 to 350 mg/L, with the maximum hydrogen yield of 311.2 mL/g glucose being obtained at Fe^2＋ concentration of 350 mg/L. Modified Logistic model could describe the progress of cumulative hydrogen production in the batch tests successfully. Modified Han-Levenspiel model could describe the effect of Fe^2＋ concentrations on average hydrogen production rate successfully.

关 键 词：FE^2+ 生物产氢 动力学 比产氢率 

分 类 号：X382.1[环境科学与工程—环境工程]