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:: Volume 5, Issue 4 (9-2018) ::
jehe 2018, 5(4): 323-336 Back to browse issues page
Study of the Efficiency of Non-Homogeneous Catalytic Ozonation Process using a Catalyst of Magnetic Nanoparticles of Iron Oxide Doped with Silica and Titanium Dioxide in Removal of Metronidazole from Synthetic Wastewater
Mojtaba Yegane Badi , Emad Dehghanifard
M.Sc. of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
Abstract:   (42 Views)
Background and Objective: Antibiotics are widely used in veterinary and medicine in the last few decades which presence of these compounds has made potential risks for aquatic and terrestrial organisms in the environment. Metronidazole is one of these antibiotics. The purpose of this study was investigation of the efficiency of metronidazole removal from aqueous solutions using a catalytic ozonation process with magnetic nanoparticles of iron oxide doped with silica and titanium dioxide.
Materials and Methods: The sol gel method was used to synthesize Fe3O4@SiO2@TiO2 nanoparticles and its properties were investigated by SEM, XRD and EDX analyzes. The effect of parameters such as pH, catalyst dose, reaction time, contaminant concentration, determining the mineralization and scavenger effect were investigated on the process performance. Changes in metronidazole concentration were determined by HPLC.
Results: According to the results of this study, pH =10 and catalyst dose of 3 g /l were obtained as optimum conditions and the removal efficiency increased with increasing of contact time and decreasing in the concentration of metronidazole. Results showed that the removal of metronidazole followed first degree model by this process. Rate of TOC was 86% under optimal operating conditions.
Conclusion: Catalytic ozonation process with magnetic nanoparticles of iron oxide doped with silica and titanium dioxide can significantly remove metronidazole and it is an appropriate method for removal of metronidazole.
Keywords: Metronidazole, Catalytic ozonation, Magnetic nanoparticles of iron oxide doped with silica and titanium dioxide
Full-Text [PDF 623 kb]   (23 Downloads)    
Type of Study: Research | Subject: Special
Received: 2018/10/2 | Accepted: 2018/10/2 | Published: 2018/10/2
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Yegane Badi M, Dehghanifard E. Study of the Efficiency of Non-Homogeneous Catalytic Ozonation Process using a Catalyst of Magnetic Nanoparticles of Iron Oxide Doped with Silica and Titanium Dioxide in Removal of Metronidazole from Synthetic Wastewater. jehe. 2018; 5 (4) :323-336
URL: http://jehe.abzums.ac.ir/article-1-542-en.html


Volume 5, Issue 4 (9-2018) Back to browse issues page
مجله مهندسی بهداشت محیط Journal of Environmental Health Enginering
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