Photodegradation of Norfloxacin in aqueous solution containing algae.
Photodegradation of Norfloxacin in aqueous solution containing algae under a medium pressure mercury lamp (15 W, lambda(max) = 365 nm) was investigated. Results indicated that the photodegradation of Norfloxacin could be induced by the algae in the heterogeneous algae-water 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.
Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 210096, China. zjwseu@126.com
Junwei
J
Zhang
Dafang
D
Fu
Jilong
J
Wu
D048408:Chlorella vulgaris / Q000187:drug effects / Q000378:metabolism* / Q000528:radiation effects*; D006863:Hydrogen-Ion Concentration / Q000187:drug effects / Q000528:radiation effects; D007501:Iron / Q000494:pharmacology; D007700:Kinetics; D008027:Light; D009643:Norfloxacin / Q000378:metabolism* / Q000528:radiation effects*; D010782:Photolysis / Q000187:drug effects / Q000528:radiation effects*; D012996:Solutions; D013696:Temperature; D013997:Time Factors; D014465:Ultrasonics
D012996:Solutions; D007501:Iron; D009643:Norfloxacin