Volume 14, Issue 3 (10-2018)
HSR 2018, 14(3): 403-409 |
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Esrafili A, Salimi M, Gholami M, Farzadkia M. Photocatalytic Removal of Metronidazole from Aquatic Environment Using g-C3N4-TiO2. HSR 2018; 14 (3) :403-409
URL: http://hsr.mui.ac.ir/article-1-1034-en.html
URL: http://hsr.mui.ac.ir/article-1-1034-en.html
1- Associate Professor, Department of Environmental Health Engineering, School of Health, Iran University of Medical Sciences, Tehran, Iran
2- PhD Candidate, Department of Environmental Health Engineering, School of Health, Iran University of Medical Sciences, Tehran, Iran
3- Professor, Department of Environmental Health Engineering, School of Health, Iran University of Medical Sciences, Tehran, Ira n
2- PhD Candidate, Department of Environmental Health Engineering, School of Health, Iran University of Medical Sciences, Tehran, Iran
3- Professor, Department of Environmental Health Engineering, School of Health, Iran University of Medical Sciences, Tehran, Ira n
Abstract: (1058 Views)
Background: Through the widespread use of antibiotics including metronidazole, they are continuously released to the environment, while traditional treatment processes are unable to remove them. Therefore, they are accumulated in the environment, and led to unpredictable risks to human health and ecosystem. In recent years, advanced oxidation processes have been introduced as effective technologies for the removal of pollutants from the aquatic environment. The aim of this study was to evaluate the efficiency of catalyst g-C3N4-TiO2 in the removal of metronidazole from aqueous environment.Methods: In this fundamental-applied study, the catalyst g-C3N4-TiO2 was first synthesized. The scanning electron microscope (SEM), energy dispersive x-ray (EDX), and diffuse reflectance spectroscopy (DRS) analysis were used to determine the characteristics of the nanocomposite. Then, the effect of factors such as the content of g-C3N4 in the structure of g-C3N4-TiO2 catalyst, the initial concentration of metronidazole (10, 15, and 20 mg/l), and pH (4, 7, and 10) were investigated.Findings: The catalyst TC3 showed more photocatalytic degradation efficiency mineralization. Maximum efficiency of this process was 83% at optimal conditions (pH = 10, concentration of 10 mg/l) after 360 minutes.Conclusion: The results of this study showed that the photocatalytic process based on catalyst g-C3N4-TiO2 is an effective method for removing metronidazole from the aqueous environment, and the use of g-C3N4 effectively enhances the photocatalytic activity of TiO2.
Type of Study: Research |
Subject:
education health and promotion
Received: 2020/07/16 | Accepted: 2018/10/15 | Published: 2018/10/15
Received: 2020/07/16 | Accepted: 2018/10/15 | Published: 2018/10/15
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