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EFFECT OF Fe2+, Co2+ , Ni2+ CONCENTRATION ON HYDROGEN PHOTOPRODUCTION BY MIXED CULTURES
Author(s): 
Pages: 972-978
Year: Issue:  7
Journal: Acta Energiae Solaris Sinica

Keyword:  Fe2+Co2+Ni2+浓度光合产氢混合菌种;
Abstract: 针对不同浓度的Fe2+、Co2'和Ni2+对混合菌种的光合产氢与生长的影响进行实验研究.结果表明适当浓度的二价铁系离子对产氢及生长具有一定促进作用.Fe2+、Co2+和Ni2+最佳产氢浓度分别为9.00、0.45和0.10wnol/L,而对产氢的影响作用大小顺序为:Fe2+>Ni2+>Co2+.二价铁系离子在适当浓度范围内可提高生长速率,其中Co2+对生长的促进作用最大.由于pH值影响二价铁系离子对产氢酶活性的作用,针对Fe2+浓度在不同初始pH值时对混合菌种光合产氢的影响进行实验研究.结果表明当pH=7.0时,Fe2+ 浓度的变化对产氢的影响最显著.而在本试验范围内,随着pH值偏离7.0,Fe2+浓度的变化对产氢的影响逐渐减小.
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