| 论文编号: | |
| 论文题目: | Potential biodegradation of phenanthrene by isolated halotolerant bacterial strains from petroleum oil polluted soil in Yellow River Delta |
| 英文论文题目: | Potential biodegradation of phenanthrene by isolated halotolerant bacterial strains from petroleum oil polluted soil in Yellow River Delta |
| 第一作者: | 徐兴健 |
| 英文第一作者: | Xing J.Xu |
| 联系作者: | 徐兴健 |
| 英文联系作者: | Xing J.Xu |
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| 发表年度: | 2019 |
| 卷: | 664 |
| 期: | |
| 页码: | 1030-1038 |
| 摘要: | The Yellow River Delta (YRD), being close to Shengli Oilfield, is at high risk forpetroleum oilpollution. The aim of this study was to isolate halotolerantphenanthrene(PHE) degrading bacteria for dealing with this contaminates insalinityenvironment. Two bacterial strains assigned as FM6-1 and FM8-1 were successfully screened from oilcontaminated soilin the YRD. Morphological andmolecular analysissuggested that strains FM6-1 and FM8-1 were belonging toDelftiasp. andAchromobactersp., respectively. Bacterial growth of both strains was not dependent on NaCl, however, grew well under extensive NaCl concentration. The optimum NaCl concentration for bacterial production of strain FM8-1 was 4% (m/v), whereas for strain FM6-1, growth was not affected within 2.5% NaCl. Both strains could use the testedaromatic hydrocarbons(naphthalene, phenanthrene,fluorantheneand pyrene) and aliphatic hydrocarbons (C12, C16, C20 and C32) as sole carbon source. The optimizedbiodegradationconditions for strain FM6-1 were pH？7, 28？°C and 2% NaCl, for strain FM8-1 were pH？8, 28？°C and 2.5% NaCl. The highest biodegradation rate of strains FM6-1 and FM8-1 was found at 150？mg/L PHE and 200？mg/L, respectively. In addition, strainsFM8–1 showed a superior biodegradation ability to strain FM6-1 at each optimized condition. The PHE biodegradation process by both strains well fitted to first-order kinetic models and thek1values were calculated to be 0.1974 and 0.1070 per day. Strain FM6-1 metabolized PHE via a “phthalic acid” route, while strain FM8-1 metabolized PHE through the “naphthalene” route. This project not only obtained two halotolerantpetroleum hydrocarbondegraders but also provided a promisingremediationapproach for solving oilpollutantsin salinity environments. |
| 英文摘要: | The Yellow River Delta (YRD), being close to Shengli Oilfield, is at high risk forpetroleum oilpollution. The aim of this study was to isolate halotolerantphenanthrene(PHE) degrading bacteria for dealing with this contaminates insalinityenvironment. Two bacterial strains assigned as FM6-1 and FM8-1 were successfully screened from oilcontaminated soilin the YRD. Morphological andmolecular analysissuggested that strains FM6-1 and FM8-1 were belonging toDelftiasp. andAchromobactersp., respectively. Bacterial growth of both strains was not dependent on NaCl, however, grew well under extensive NaCl concentration. The optimum NaCl concentration for bacterial production of strain FM8-1 was 4% (m/v), whereas for strain FM6-1, growth was not affected within 2.5% NaCl. Both strains could use the testedaromatic hydrocarbons(naphthalene, phenanthrene,fluorantheneand pyrene) and aliphatic hydrocarbons (C12, C16, C20 and C32) as sole carbon source. The optimizedbiodegradationconditions for strain FM6-1 were pH？7, 28？°C and 2% NaCl, for strain FM8-1 were pH？8, 28？°C and 2.5% NaCl. The highest biodegradation rate of strains FM6-1 and FM8-1 was found at 150？mg/L PHE and 200？mg/L, respectively. In addition, strainsFM8–1 showed a superior biodegradation ability to strain FM6-1 at each optimized condition. The PHE biodegradation process by both strains well fitted to first-order kinetic models and thek1values were calculated to be 0.1974 and 0.1070 per day. Strain FM6-1 metabolized PHE via a “phthalic acid” route, while strain FM8-1 metabolized PHE through the “naphthalene” route. This project not only obtained two halotolerantpetroleum hydrocarbondegraders but also provided a promisingremediationapproach for solving oilpollutantsin salinity environments. |
| 刊物名称: | Science of the Total Environment |
| 英文刊物名称: | Science of the Total Environment |
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| 参与作者: | X. J. Xu, W. M. Liu, W. Wang, S. H. Tian, P. Jiang, Q. G. Qi, F. J. Li, H. Y. Li, Q. Y. Wang, H. Li and H. W. Yu |
| 英文参与作者: | X. J. Xu, W. M. Liu, W. Wang, S. H. Tian, P. Jiang, Q. G. Qi, F. J. Li, H. Y. Li, Q. Y. Wang, H. Li and H. W. Yu |
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Potential biodegradation of phenanthrene by isolated halotolerant bacterial strains from petroleum o
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