| 水中四环素的超声辐照降解 |
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| 引用本文： | 郭照冰,周飞,张超智,林明月,吴梦龙,包春晓.水中四环素的超声辐照降解[J].环境化学,2012,31(8):1215-1221. |
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| 作者姓名： | 郭照冰 周飞 张超智 林明月 吴梦龙 包春晓 |
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| 作者单位： | 南京信息工程大学环境科学与工程学院,南京210044 江苏省大气环境监测与污染控制高技术研究重点实验室,南京210044 |
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| 基金项目： | 江苏省科技项目，江苏省“青蓝工程”人才项目，江苏省环保科研课题，江苏省“六大人才高峰”资助项目，江苏省大学生实践创新计划项目 |
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| 摘 要： | 以四环素(TC)为研究对象,探讨了超声功率、初始浓度、pH值以及超声协同H2O2、TiO2、Na2CO3等组合工艺对超声降解TC效率的影响.实验结果表明,超声可有效降解水中低浓度的TC,尤其在碱性条件下,超声降解更为显著.加入H2O2、TiO2和Na2CO3在一定程度上都可以促进水中TC的降解.依据量化计算以及LC-MS测定结果,探讨了TC的超声降解机理,揭示超声降解水中TC主要是基于.OH自由基的氧化过程.
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| 关 键 词： | 四环素 超声 降解 Gaussian软件 |
Degradation of tetracycline in aqueous solution by ultrasonic irradiation |
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| GUO Zhaobing, ZHOU Fei,ZHANG Chaozhi,LIN Mingyue,WU Menglong,BAO Chunxiao.Degradation of tetracycline in aqueous solution by ultrasonic irradiation[J].Environmental Chemistry,2012,31(8):1215-1221. |
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| Authors: | GUO Zhaobing ZHOU Fei ZHANG Chaozhi LIN Mingyue WU Menglong BAO Chunxiao |
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| Institution: | 1,2(1.School of Environmental Science and Engineering,Nanjing University of Information Science & Technology,Nanjing,210044,China; 2.Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control,Nanjing,210044,China) |
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| Abstract: | The effects of ultrasonic power,initial concentrations,solution pH values and additives(H2O2,TiO2 and Na2CO3) on the degradation efficiencies of TC by ultrasound(US) were studied.Experimental results show that low-concentration TC was effectively removed by ultrasonic irradiation in aqueous solution.The presence of OH-remarkably enhanced TC removal efficiencies.In addition,H2O2,TiO2 and Na2CO3 also promoted ultrasonic induced degradation of TC to some extent.TC ultrasonic degradation mechanism was mainly ascribed to · OH oxidation,which was supported by the results of quantum chemical calculations and LC-MS measurement. |
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| Keywords: | tetracycline ultrasonic degradation Gaussian |
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