热激活过硫酸盐降解水中典型氟喹诺酮抗生素分析
Analysis on the Degradation of Typical Fluoroquinolone in the Water by Thermally Activated Persulfate
作者：郭洪光(四川大学 建筑与环境学院;同济大学 水污染与控制国家重点实验室)；高乃云(同济大学 水污染与控制国家重点实验室)；张永丽(四川大学 建筑与环境学院)；李长军(同济大学 水污染与控制国家重点实验室)；区永杰(同济大学 水污染与控制国家重点实验室)
Author：Guo Hongguang(College of Architecture and Environment,Sichuan Univ.;State Key lab．of Pollution Control and Resources Reuse,Tongji Univ.)；Gao Naiyun(State Key lab．of Pollution Control and Resources Reuse,Tongji Univ.)；Zhang Yongli(College of Architecture and Environment,Sichuan Univ.)；Li Changjun(State Key lab．of Pollution Control and Resources Reuse,Tongji Univ.)；Ou Yongjie(State Key lab．of Pollution Control and Resources Reuse,Tongji Univ.)
收稿日期：2014-11-04 年卷（期）页码：2015,47(2):191-197
期刊名称：工程科学与技术
Journal Name：Advanced Engineering Sciences
关键字：过硫酸盐;硫酸根自由基;氟喹诺酮;环丙沙星;动力学;影响因素
Key words：persulfate;sulfate radical;Fluoroquinolones;Ciprofloxacin;kinetics;impact factors
基金项目：国家科技重大专项资助（2012ZX07403-001）；四川省环保科技计划资助项目（2013HB08）；中央高校基本科研业务费资助（2082604174048）
中文摘要
近年来水体中残留的氟喹诺酮类抗生素已经引起了研究者的关注，采用基于热激活生成硫酸根自由基的方式氧化降解水中的典型氟喹诺酮抗生素环丙沙星，研究了温度、过硫酸盐浓度、pH及水中常见离子等影响因子对反应的影响。研究发现在拟一级动力学氧化模型的基础上，建立的二级反应动力学模型具有较好的相关性。随着初始过硫酸钠浓度及反应温度的升高，环丙沙星的降解速率得到升高，而随着反应pH的变化则呈现相反作用，研究得出该反应活化能为(105.25±14.43) kJ/mol。水中的Cl-在低浓度时具有抑制作用，在较高浓度的时候具有促进作用，NO3-及PO43-在较高的浓度下会对反应产生抑制作用，而CO32-则在0.01 mol/L的浓度下起到了较大抑制作用。
英文摘要
The degradation of Ciprofloxacin by thermally activated persulfate was investigated.The impact factors of temperature,the concentration of persulfate, pH value and typical ions were studied.The results showed that based on the pseudo-first-order oxidative reaction model,the second-order model displayed a satisfactory correlation.The degradation rate of Ciprofloxacin got ascend with the increase of temperature or the initial concentration of persulfate and the pH value showed the converse effect.The reaction activation energy was (105.25±14.43) kJ/mol.Lower concentration of chloride made the inhibition for the degradation while promotion was observed for the higher dosage. Both nitrate and sulfate could restrain the reaction in the higher concentration solutions differing from carbonate which played a greater inhibition at merely dosage of 0.01 mol/L on the degradation of Ciprofloxacin.
【关闭】
