高锰酸钾氧化水中沙拉沙星的动力学研究

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Abstract By evaluating the effects of initial concentration of KMnO₄,pH and temperature,experimental studies of sarafloxacin oxidation kinetics by potassium permanganate were investigated.Meanwhile,the kinetics parameters of other fluoroquinolones (e.g.enrofloxacin,ofloxacin,ciprofloxacin,norfloxacin) were compared with those of sarafloxacin,thus providing a feasible approach for degradation and removal of sarafloxacin in the aquatic environment.The results indicated that the kinetic rate of sarafloxacin oxidization by potassium permanganate in the aqueous solution followed the second-order kinetics model.An increase in the initial KMnO₄ concentration or temperature corresponded to an increase in the reaction rate.Furthermore,the reaction rate [K=66~91.28L/(mol·min)]under acidic conditions (pH=4~5) was obviously higher than that [K=30~47L/(mol·min)]under the neutral and alkaline conditions.The kinetic parameters of sarafloxacin were similar to those of ciprofloxacin,which could be validated for the determination of relevant parameters of sarafloxacin.

Key words： sarafloxacin (SAR) fluoroquinolones oxidation potassium permanganate kinetics

Received: 16 August 2017

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	LI Xuan
	LIU Zhi-quan
	ZHOU Qi-hao
	ZHU Shi-jun
	XU Yong-peng

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LI Xuan,LIU Zhi-quan,ZHOU Qi-hao等. Kinetics study on sarafloxacin oxidization by permanganate in aqueous environment[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(3): 917-922.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I3/917

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