| 引用本文: | 徐勇鹏,万晓辉,王在刚.高锰酸钾氧化氧氟沙星的动力学研究[J].哈尔滨工业大学学报,2012,44(10):38.DOI:10.11918/j.issn.0367-6234.2012.10.008 |
| XU Yong-peng,WAN Xiao-hui,WANG Zai-gang.Kinetics of ofloxacin oxidation by potassium permanganate[J].Journal of Harbin Institute of Technology,2012,44(10):38.DOI:10.11918/j.issn.0367-6234.2012.10.008 |
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| 高锰酸钾氧化氧氟沙星的动力学研究 |
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徐勇鹏1,2, 万晓辉2,3, 王在刚4
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1.哈尔滨工业大学 城市水资源开发利用北方国家工程研究中心,150090 哈尔滨;2.哈尔滨工业大学 市政环境工程学院,150090 哈尔滨,;3.中国成达工程有限公司,610041 成都;4.哈尔滨市国际工程咨询中心,150018哈尔滨
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| 摘要: |
| 为探讨氧氟沙星在水环境中氧化降解的趋势,采用水处理常用的氧化剂高锰酸钾,研究氧氟沙星被高锰酸降解的效能和动力学规律,并讨论高锰酸钾浓度、pH、温度等因素对反应速率常数的影响．结果表明,高锰酸钾对氧氟沙星的氧化过程符合二级反应动力学模型,在高锰酸钾过量的情况下,氧化反应的假一级反应动力学常数Kobs=0.000 092［KMnO4］-0.002 72．pH对反应速率常数有显著影响．温度对反应速率也有影响,随着温度的升高,高锰酸钾氧化氧氟沙星的反应速率增加,高锰酸钾氧化氧氟沙星的反应表观活化能Ea=30.463 3 kJ·mol-1,该反应在一般水处理条件下较容易发生． |
| 关键词: 高锰酸钾 氧氟沙星 动力学 pH 温度 |
| DOI：10.11918/j.issn.0367-6234.2012.10.008 |
| 分类号:TU991.2 |
| 基金项目:国家自然科学基金资助项目(51108118);黑龙江省科技攻关项目(GB07C20202). |
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| Kinetics of ofloxacin oxidation by potassium permanganate |
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XU Yong-peng1,2, WAN Xiao-hui2,3, WANG Zai-gang4
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1.National Engineer Research Center of Urban Water Resources, Harbin Institute of Technology, 150090 Harbin, China;2.School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090 Harbin, China;3.China Chengda Engineering Co., Ltd, 610041 Chengdu, China;4.Harbin International Engineering Consulting Center, 150018 Harbin, China
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| Abstract: |
| To discover the kinetic law of ofloxacin oxidation by potassium permanganate in aquatic environment, this article studied the rate constant of reaction and the reaction influencing factors such as potassium permanganate dosage, pH value and temperature. The results showed that the oxidation reaction of ofloxacin by potassium permanganate in aqueous solution followed second-order kinetics. When potassium permanganate was excessive, pseudo-first-order rate and concentration of potassium permanganate followed the equation: Kobs=0.000 092［KMnO4］-0.002 72. The second-order reaction rate constant was influenced by pH values. The rate of ofloxacin oxidation by potassium permanganate increased with the increasing of temperature, and the reaction activation energy Ea=30.463 3 kJ·mol-1,which revealed that the oxidation reaction between ofloxacin and potassium permanganate was feasible under usual water treatment condition. |
| Key words: potassium permanganate ofloxacin kinetics pH temperature |
