| Fe2+浓度对生物产氢动力学的影响 |
| 摘要点击 3046 全文点击 2255 投稿时间：2007-09-20 修订日期：2007-12-18 |
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| 中文关键词 Fe2+ 生物产氢 动力学 比产氢率 |
| 英文关键词 Fe2+ biohydrogen production kinetics hydrogen yield |
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| 中文摘要 |
| 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0～350 mg/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. |
| 英文摘要 |
| The effect of Fe2+ 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 Fe2+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 Fe2+ 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 Fe2+ 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 Fe2+ concentrations on average hydrogen production rate successfully. |
