| 论文题目: | Marinobacter strain NNA5, a newly isolated and highly efficient aerobic denitrifier with zero NO emission |
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| 作者: | Liu Ying, Ai Guo-Min, Miao Li-Li, and Liu Zhi-Pei*. |
| 联系作者: | |
| 刊物名称: | Bioresour Technol |
| 期: | |
| 卷: | 206 |
| 页: | 9-15 |
| 年份: | 2016 |
| 影响因子: | 5.33 |
| 论文下载: | http://www.sciencedirect.com/science/article/pii/S0960852416300426 |
| 摘要: | An efficient aerobic denitrification bacterium, strain NNA5, was isolated and identified as Marinobacter sp. NNA5. NNA5 did not perform heterotrophic nitrification. GC/IRMS analysis revealed that 15N2 was produced from Na15NO2 and K15NO3. GC/MS and quantitative analyses showed that no N2O emission occurred when nitrite or nitrate was used as substrate. Single factor experiments indicated that optimal conditions for aerobic denitrification were: sodium succinate or sodium pyruvate as carbon source, temperature 35 degrees C, NaCl concentration 2-4%, C/N ratio 6-8, pH 7.5, rotation speed 150rpm (giving dissolved oxygen concentration 6.08mg/L), NO3--N concentration ranging from 140 to 700mg/L. NNA5 displayed highly efficient aerobic denitrifying ability, with maximal NO3--N removal rate 112.8mg/L/d. In view of its ability to perform aerobic denitrification with zero N2O emission, NNA5 has great potential for future application in aerobic denitrification processes in industrial and aquaculture wastewater treatment systems. |
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