HETEROTROPHIC NITRIFICATION BY BACTERIUM SHINELLA ZOOGLOEOIDES SP CPZ56

文献类型： 外文期刊

第一作者： Chen, Peizhen

作者： Chen, Peizhen;Zheng, Xiangqun;Ren, Tianzhi;Li, Shaopeng;Wang, Ligang

作者机构：

关键词： Heterotrophic nitrification;Shinella zoogloeoides sp.CPZ 56;rurel sewage

期刊名称：FRESENIUS ENVIRONMENTAL BULLETIN （ 影响因子：0.489； 五年影响因子：0.479 ）

ISSN： 1018-4619

年卷期： 2016 年 25 卷 8 期

页码：

收录情况： SCI

摘要： Shinella zoogloeoides sp.CPZ 56 was isolated from swine and identified by morphological, physiological properties and analysis of 16S rDNA gene. Under aerobic growth conditions, batch experiments showed complete removal of 50 mg L-1 ammonium nitrogen within 28 h and the ammonium nitrogen removal rate was 1.8 mg L(-1)h(-1). Nitrification products NO2--N and NO3-N were detected during the experiments. There were less than 19 mg L-1 and less than 0.3 mg L-1 accumulated, while nitrogen removal rate reached 64%. The study found that the temperature ranged between 30 and 35 degrees C, the denitrification by CPZ56 was the best, the ammonia nitrogen removal rate could reach 95%. The optimum pH was between 7.0 and 7.5. When the initial ammonia nitrogen concentration was lower than 50 mg/L, the ammonia nitrogen removal rate could reach 100%, however, ammonia nitrogen removal rate was on the decline when the initial ammonia nitrogen concentration was higher than 50 mg L-1. This study first reported the heterotrophic nitrification function of S. zoogloeoides SP. CPZ56 and indicated that demonstrating a potential use of the strain for wastewater.

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