Asgari, E. and Farzadkia, M. and Esrafili, A. and Badi, M.Y. and Jokandan, S.F. and Sobhi, H.R. (2020) Application of a photocatalytic ozonation process using TiO2 magnetic nanoparticles for the removal of Ceftazide from aqueous solutions: Evaluation of performance, comparative study and mechanism. Optik, 212.
Full text not available from this repository.Abstract
The presence of antibiotics in the environment leads to microbial resistance in humans and pathogenic microbes. Given the resistance of antibiotics even after conventional wastewater treatments, the present study is centered on the removal of ceftazide (CFT) from aqueous solutions by the photocatalytic ozonation process using TiO2 magnetic nanoparticles (T-MNPs). The effects of a number of operational parameters such as pH, initial CFT concentration, ozone concentration, reaction time on the degradation of CFT was thoroughly studied by the photocatalytic process. Under the optimum conditions (CFT concentration of 10 mg/L, pH 11, catalyst dosage of 1.0 g/L and ozone flow of 0.22 g/h), the removal efficiency and mineralization of 100 was 75.5 were obtained for CFT after a 15-min treatment. Following on, the reusability of the photocatalyst was evaluated indicating a 5.8 drop in the removal performance after six consecutive cycles of use. The mechanism for the degradation of CFT was predominantly governed by the formation of radOH radicals. In conclusion, the photocatalytic ozonation process can significantly remove CFT and seems to be a suitable alternative to the others methods used for removal of antibiotics from aqueous solutions. © 2020 Elsevier GmbH
| Item Type: | Article |
|---|---|
| Additional Information: | cited By 1 |
| Uncontrolled Keywords: | Antibiotics; Free radicals; Ozone; Ozone water treatment; Ozonization; Reusability; TiO2 nanoparticles; Titanium dioxide; Wastewater treatment, Comparative studies; Microbial resistance; Operational parameters; Pathogenic microbes; Photocatalytic ozonation; Photocatalytic process; Removal efficiencies; Removal performance, Magnetic nanoparticles |
| Subjects: | WA Public Health |
| Depositing User: | eprints admin |
| Date Deposited: | 16 Sep 2020 09:45 |
| Last Modified: | 16 Sep 2020 09:45 |
| URI: | http://eprints.iums.ac.ir/id/eprint/23509 |
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