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產(chǎn)氣腸桿菌厭氧發(fā)酵產(chǎn)氫工藝實(shí)驗(yàn)
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國(guó)家自然科學(xué)基金資助項(xiàng)目(51376056)和國(guó)家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)資助項(xiàng)目(2012AA051502)


Bio-hydrogen Production by Anaerobic Fermention of Enterobacter aerogenes in Pure Culture
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    摘要:

    以產(chǎn)氣腸桿菌(Enterobacter aerogenes)為純菌種,,葡萄糖(G)為發(fā)酵底物,分別選取25、30、35、38℃的發(fā)酵溫度,,初始pH值為3.5、4.5,、5.5,、6.5的酸堿度,,葡萄糖與蛋白酶消化物的質(zhì)量比為2、3,、6的碳氮比的實(shí)驗(yàn)條件進(jìn)行厭氧發(fā)酵產(chǎn)氫工藝及其代謝調(diào)控途徑的實(shí)驗(yàn),。實(shí)驗(yàn)結(jié)果表明,產(chǎn)氣腸桿菌具有一定的耐酸性,,耐酸范圍為pH值4.5~7.0,;不同工藝條件下產(chǎn)氣腸桿菌發(fā)酵產(chǎn)氫的周期在68~156 h之間。產(chǎn)氣腸桿菌發(fā)酵產(chǎn)氫周期最短為68 h的最優(yōu)化發(fā)酵工藝條件為溫度35℃,、pH值6.5,、碳氮質(zhì)量比3,其氫氣產(chǎn)率達(dá)261.5 mL/g,,氫氣轉(zhuǎn)化率為2.1 mol/mol,。

    Abstract:

    Experiments were carried out to investigate anaerobic fermentation hydrogen production process and its metabolic regulation ways with taking Enterobacter aerogenesenes as pure strains and using glucose as substrate. The experiments were conducted to study at different temperatures (25℃,30℃,35℃,38℃), initial pH values (3.5,4.5,5.5,6.5), mass ratio of glucoses (G) and protease digestion (2,3,6). The results showed that Enterobacter aerogenesenes had a certain acid-resisting in the pH value range of 7.0 to 4.5. Moreover, fermentative hydrogen production cycles of Enterobacter aerogenes was very variable (between 68 h to 156 h) under different technical conditions. The optimum conditions of the shortest fermentative hydrogen production cycle of 68 h were as follows:the temperature was 35℃,the pH value was 6.5, meanwhile, the carbon-nitrogen ratio was 3. Based on these conditions, hydrogen production rate and hydrogen conversion rate could reach to the value of 261.5 mL/g and 2.1 mol/mol.

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張全國(guó),赫倚風(fēng),胡建軍,王 毅,劉 瑞.產(chǎn)氣腸桿菌厭氧發(fā)酵產(chǎn)氫工藝實(shí)驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2014,45(2):176-180. Zhang Quanguo, He Yifeng, Hu Jianjun, Wang Yi, Liu Rui. Bio-hydrogen Production by Anaerobic Fermention of Enterobacter aerogenes in Pure Culture[J]. Transactions of the Chinese Society for Agricultural Machinery,2014,45(2):176-180.

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  • 收稿日期:2013-09-17
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  • 在線發(fā)布日期: 2014-02-10
  • 出版日期: 2014-02-10
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