| Anoxic degradation of nitrogenous heterocyclic compounds by activated sludge and their active sites |
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| 作者姓名： | Peng Xu Hongjun Han Haifeng Zhuang Baolin Hou Shengyong Ji Dexin Wang Kun Li Qian Zhao |
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| 作者单位： | State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China,State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China,State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China,State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China,State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China,State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China,State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China,State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China |
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| 基金项目： | This work was supported by the Harbin Institute of Technology (No. 2013DX10), the Sino-Dutch Research Program (No. zhmhgfs2011-001) and the Sino-American Coal Chemical Industry Program (No. ZMAGZ 2011001). |
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| 摘 要： | The potential for degradation of five nitrogenous heterocyclic compounds(NHCs), i.e.,imidazole, pyridine, indole, quinoline, and carbazole, was investigated under anoxic conditions with acclimated activated sludge. Results showed that NHCs with initial concentration of 50 mg/L could be completely degraded within 60 hr. The degradation of five NHCs was dependent upon the chemical structures with the following sequence:imidazole pyridine indole quinoline carbazole in terms of their degradation rates.Quantitative structure–biodegradability relationship studies of the five NHCs showed that the anoxic degradation rates were correlated well with highest occupied molecular orbital.Additionally, the active sites of NHCs identified by calculation were confirmed by analysis of intermediates using gas chromatography and mass spectrometry.
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| 关 键 词： | Anoxic NHCs Pseudo first-order equation |
| 收稿时间： | 2014/1/22 0:00:00 |
| 修稿时间： | 2014/9/18 0:00:00 |
Anoxic degradation of nitrogenous heterocyclic compounds by activated sludge and their active sites |
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| Peng Xu,Hongjun Han,Haifeng Zhuang,Baolin Hou,Shengyong Ji,Dexin Wang,Kun Li,Qian Zhao.Anoxic degradation of nitrogenous heterocyclic compounds by activated sludge and their active sites[J].Journal of Environmental Sciences,2015,27(5):221-225. |
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| Authors: | Peng Xu Hongjun Han Haifeng Zhuang Baolin Hou Shengyong Ji Dexin Wang Kun Li and Qian Zhao |
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| Institution: | State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China,State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China,State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China,State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China,State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China,State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China,State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China and State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China |
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| Abstract: | The potential for degradation of five nitrogenous heterocyclic compounds (NHCs), i.e., imidazole, pyridine, indole, quinoline, and carbazole, was investigated under anoxic conditions with acclimated activated sludge. Results showed that NHCs with initial concentration of 50 mg/L could be completely degraded within 60 hr. The degradation of five NHCs was dependent upon the chemical structures with the following sequence: imidazole >pyridine >indole >quinoline >carbazole in terms of their degradation rates. Quantitative structure-biodegradability relationship studies of the five NHCs showed that the anoxic degradation rates were correlated well with highest occupied molecular orbital. Additionally, the active sites of NHCs identified by calculation were confirmed by analysis of intermediates using gas chromatography and mass spectrometry. |
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| Keywords: | Anoxic NHCs Pseudo first-order equation |
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