Photodegradation of Norfloxacin in aqueous solution containing algae  

作　　者：Junwei Zhang Dafang Fu Jilong Wu 

机构地区：[1]Department of Municipal Engineering,School of Civil Engineering,Southeast University,Nanjing 210096,China

出　　处：《Journal of Environmental Sciences》2012年第4期743-749,共7页环境科学学报（英文版）

基　　金：supported by A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) (No. 1105007001)

摘　　要：Photodegradation of Norfloxacin in aqueous solution containing algae under a medium pressure mercury lamp （15 W, λmax -365nm） was investigated. Results indicated that the photodegradation of Norfloxacin could be induced by the algae in the heterogeneous algaewater systems. The photodegradation rate of Norfloxacin increased with increasing algae concentration, and was greatly influenced by the temperature and pH of solution. Meanwhile, the cooperation action of algae and Fe（III）, and the ultrasound were beneficial to photodegradation of Norfloxacin. The degradation kinetics of Norfloxacin was found to follow the pseudo zero-order reaction in the suspension of algae. In addition, we discussed the photodegradation mechanism of Norfloxacin in the suspension of algae. This work will be helpful for understanding the photochemical degradation of antibiotics in aqueous environment in the presence of algae, for providing a new method to deal with antibiotics pollution.Photodegradation of Norfloxacin in aqueous solution containing algae under a medium pressure mercury lamp （15 W, λmax -365nm） was investigated. Results indicated that the photodegradation of Norfloxacin could be induced by the algae in the heterogeneous algaewater systems. The photodegradation rate of Norfloxacin increased with increasing algae concentration, and was greatly influenced by the temperature and pH of solution. Meanwhile, the cooperation action of algae and Fe（III）, and the ultrasound were beneficial to photodegradation of Norfloxacin. The degradation kinetics of Norfloxacin was found to follow the pseudo zero-order reaction in the suspension of algae. In addition, we discussed the photodegradation mechanism of Norfloxacin in the suspension of algae. This work will be helpful for understanding the photochemical degradation of antibiotics in aqueous environment in the presence of algae, for providing a new method to deal with antibiotics pollution.

关 键 词：PHOTODEGRADATION NORFLOXACIN ALGAE kinetic analysis MECHANISM 

分 类 号：S859.796[农业科学—临床兽医学] TQ324.9[农业科学—兽医学]