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首页> 外文期刊>Applied Microbiology and Biotechnology >Nitrate reduction by Citrobacter diversus under aerobic environment
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Nitrate reduction by Citrobacter diversus under aerobic environment

机译：在有氧环境下通过柠檬酸杆菌减少硝酸盐

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A new aerobic denitrifier, Citrobacter diversus, was isolated from both nitrification and denitrification sludge. To monitor the variation in the concentration of nitrogen oxides, aerobic denitrification by C. diversus was carried out in a batch reactor. When the nitrate concentration was greater than 180 mg N l(-1), the nitrate reduction rate became stable. The effect of the C/N ratio on the denitrification activity was also investigated. The results showed that the optimum denitrification activity was obtained when the C/N ratio was 4-5. The range of the C/N ratio was higher than that for traditional anoxic denitrification. The effect of the dissolved oxygen concentration was further studied; and it was found that the range of dissolved oxygen concentrations, both for specific growth rates and fdr specific denitrification rates, was 2-6 mg(-1). From these results, it can be concluded that both the concentration of dissolved oxygen and the C/N ratio are key factors in the aerobic denitrification by C. diversus. [References: 11]
机译：从硝化和反硝化污泥中分离出一种新的好氧反硝化器，Citrobacter diversus。为了监测氮氧化物浓度的变化，在间歇反应器中进行了由C.diversus进行的好氧反硝化。当硝酸盐浓度大于180 mg N l（-1）时，硝酸盐还原速率变得稳定。还研究了碳氮比对反硝化活性的影响。结果表明，当C / N比为4-5时，可获得最佳的反硝化活性。 C / N比的范围高于传统的缺氧反硝化的范围。进一步研究了溶解氧浓度的影响。结果发现，对于特定的生长速率和fdr的特定反硝化速率，溶解氧浓度的范围均为2-6 mg（-1）。从这些结果可以得出结论，溶解氧的浓度和C / N比都是由C.diversus进行好氧反硝化的关键因素。 [参考：11]

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