https://scholars.lib.ntu.edu.tw/handle/123456789/407994
標題: | Aerobic denitrification by novel isolated strain using NO2--N as nitrogen source | 作者: | Wan C. Yang X. Lee D.-J. Du M. Wan F. Chen C. |
關鍵字: | Aerobic denitrification;Nitrite;Pseudomonas sp.;SND | 公開日期: | 2011 | 卷: | 102 | 期: | 15 | 起(迄)頁: | 7244-7248 | 來源出版物: | Bioresource Technology | 摘要: | Biological denitrification reaction can be achieved under aerobic environment. Few aerobic denitrifiers using nitrite as sole nitrogen source were identified. Using nitrite as the sole nitrogen source, this work assessed the denitrification activity of yy7, an aerobic heterotrophic denitrifier identified as Pseudomonas sp. (94% similarity) by 16S rRNA sequencing analysis. The logistic equation describes the cell growth curve, yielding a generation time of 2.9h at an initial 18mgl-1 NO2--N. Reduction of NO2--N was primarily achieved during its logarithmic growth phase, and was accompanied by an increase in suspension pH and near complete consumption of dissolved oxygen. Three genes relating to nirK, norB, and nosZ were noted to involve in isolate strain. Isolate yy7 can survive and remove up to 40mgl-1 NO2--N and, hence, can be applied as an effective aerobic denitrifier during simultaneous nitrification and denitrification via nitrite processes. ? 2011 Elsevier Ltd. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407994 | ISSN: | 09608524 | DOI: | 10.1016/j.biortech.2011.04.101 |
顯示於: | 化學工程學系 |
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