期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2015
卷号：6
期号：3
页码：792-799
出版社：University of Mohammed Premier Oujda
摘要：The presence of pharmaceuticals drugs in aquatic environment is a growing environmental concern due to their drug- related adverse effects on aquatic ecosystems. In this study the effects of some operational parameters such as pH, concentration of titanium dio xide nanoparticles, exposure time and intensity of UV were evaluated using photo catalytic process by nanoparticles of titanium dioxide (TiO 2 ). The results showed that the removal of metronidazole and COD have a direct connection with the intensity of the UV lamp and exposure time. Metronidazole removal efficiency at each exposure time decreases with increasing pH. Moreover the results showed that at exposure times of 30 and 60 minutes the removal efficiency for COD and metronidazole were reduced by increasing TiO 2 , but they were increased when exposure time was increased to 180 minutes and TiO 2 nanoparticles' concentration increased from 0.5 to 3 g.L -1 , which this could be related to the presence of more active sites on the catalyst surface and more impact of UV at higher concentrations. According to obtained results, it can be concluded that the photo catalytic process using T iO 2 nanoparticles could be an effective and promising method for treatment of aqueous solutions containing Metronidazole
