Identification of novel denitrifying bacteria Stenotrophomonas sp. ZZ15 and Oceanimonas sp. YC13 and application for removal of nitrate from industrial wastewater |
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| Authors: | Lu Yu Yanjun Liu Gejiao Wang |
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| Institution: | (1) State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People’s Republic of China |
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| Abstract: | Two novel denitrifying bacteria were successfully isolated from industrial wastewater and soil samples. Using morphological,
biochemical/biophysical and 16S rRNA gene analyses, these two bacteria were identified as Stenotrophomonas sp. ZZ15 and Oceanimonas sp. YC13, respectively. Both of these two bacteria showed efficient NO3
−-N removing abilities under a semi-anaerobic condition without obvious accumulation of NO2
−-N, N2O-N and NH4
+-N. NO3
−-N removal from paper mill wastewater was also successful by treatments with either a denitrifier or an immobilization method.
Therefore, this study provides valuable denitrifying bacteria in biotreatment of industrial wastewater and other environmental
pollution caused by NO3
−/NO2
−. |
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| Keywords: | Biological nitrate removal Stenotrophomonas Oceanimonas Denitrifying bacteria Industrial wastewater Immobilization |
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