Regulation of dissolved oxygen from accumulated nitrite during the heterotrophic nitrification and aerobic denitrification of Pseudomonas stutzeri T13
Regulation of dissolved oxygen from accumulated nitrite during the heterotrophic nitrification and aerobic denitrification of Pseudomonas stutzeri T13
复制标题
施氏假单胞菌 T13 异养硝化和好氧反硝化过程中积累的亚硝酸盐溶解氧的调节
DOI：
10.1007/s00253-014-6221-6
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发表时间：
2015-04-01
影响因子：
5
通讯作者：
Ma, Fang
中科院分区：
文献类型：
--
作者：
Sun, Yilu;Li, Ang;Ma, Fang
The nitrogen-removing characteristics of Pseudomonas stutzeri T13, a heterotrophic nitrifying-aerobic denitrifying bacterium, were investigated. The ammonium and nitrate removal of the bacterium was found to reach nearly 100 % at 15 h. However, the total nitrogen (TN) removal rate reached only about 23.47 % because of the dramatic accumulation of nitrite at a high dissolved oxygen (DO) level (160 rpm). The process of nitrite reduction was found to be the bottleneck for the efficiency of aerobic denitrification. Decreasing the shaking speed from 160 to 50 rpm to lower the DO concentration during cultivation was an effective method of improving nitrite utilization because nitrite removal increased from 62.37 to 100 %. The 99.21 % capability of simultaneous heterotrophic nitrification and aerobic denitrification with TN removal was achieved at a relatively low DO level (50 rpm).
