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Inhibitory effects of butyrate on biological hydrogen production with mixed anaerobic cultures

机译：丁酸对厌氧混合培养生物产氢的抑制作用

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摘要

In this study batch experiments were conducted to investigate the inhibitory effects of butyrate addition on hydrogen production from glucose by using anaerobic mixed cultures. Experimental results showed that addition of butyrate at 4.18 and 6.27 g/l only slightly inhibited hydrogen production, and addition of butyrate at 8.36-12.54 g/l imposed a moderate inhibitory effect on hydrogen production. At addition of 25.08 g/l, butyrate had a strong inhibitory influence on substrate degradation and hydrogen production. The distribution of the volatile fatty acids produced from the acidogeneisis of glucose was significantly influenced by the addition of butyrate. The inhibition of butyrate addition on hydrogen production was described well by a non-competitive and non-linear inhibition model, with the maximum hydrogen production rate of 59.3 ml/g-SS/h, critical added butyrate concentration of 25.08 g/l, and inhibition degree of 0.323, respectively. The C(I,50) values (the butyrate concentration at which bioactivity is reduced by 50%) for hydrogen production rate and yield were estimated as 19.39 and 20.78 g/l of added butyrate, respectively.
机译：在该研究中，进行了批量实验以研究使用厌氧混合培养物添加丁酸酯对葡萄糖产生氢的抑制作用。实验结果表明，添加4.18和6.27 g / l的丁酸只会略微抑制氢气的产生，而添加8.36-12.54 g / l的丁酸对氢气的产生具有中等抑制作用。当添加25.08 g / l时，丁酸酯对底物降解和产氢有很强的抑制作用。由葡萄糖的酸生成产生的挥发性脂肪酸的分布受到丁酸的添加的显着影响。通过非竞争性和非线性抑制模型很好地描述了丁酸添加对制氢的抑制作用，最大制氢速率为59.3 ml / g-SS / h，临界添加丁酸浓度为25.08 g / l，并​​且抑制度分别为0.323。产氢率和产率的C（I，50）值（生物活性降低50％的丁酸盐浓度）估计分别为添加丁酸盐的19.39和20.78 g / l。

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  • 来源
    《Journal of Environmental Management》 |2005年第1期|p.65-70|共6页
  • 作者

    Zheng XJ; Yu HQ;

  • 作者单位

    Laboratory of Environmental Engineering, Department of Chemistry, School of Chemistry, The University of Science and Technology of China, Hefei, Anhui 230026, China.;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境规划与环境管理;
  • 关键词

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