Esrafili A, Salimi M, Jonidi-Jafari A, Rezaei-Kalantary R. Investigation of Photocatalytic Removal of Amoxicillin from Aquatic Environment Using Bi2O3-TiO2. J Health Syst Res 2018; 14 (3) :369-376
URL:
http://hsr.mui.ac.ir/article-1-1039-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, Iran
Abstract: (1377 Views)
Background: The continuous introduction of antibiotics, including amoxicillin, into the environment has created potential health risks, especially resistance of pathogenic microorganisms. In recent years, several efforts have been made by researchers to develop methods that lead to the destruction of antibiotics, including photocatalytic processes based on TiO2. The aim of this study was to evaluate the efficiency of catalyst Bi2O3-TiO2 in the removal of amoxicillin from aqueous environment.Methods: In this fundamental-applied study, the catalyst Bi2O3-TiO2 was first synthesized by hydrothermal method. The scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (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 bismuth in the Bi2O3-TiO2, the initial concentration of amoxicillin (10, 15, and 20 mg/l), pH (3 to 11), and mineralization rate were investigated.Findings: The catalyst BT5 showed more photocatalytic degradation efficiency of amoxicillin under visible light irradiation. The optimum pH and amoxicillin concentration in this process were determined as 11 and 10 mg/l, respectively. The maximum efficiency of this process was 85%, at optimal conditions after 120 minutes.Conclusion: The results of this study showed that the photocatalytic process based on Bi2O3-TiO2 compared to pure TiO2, is an effective method for removing amoxicillin from the aqueous environment, and the use of Bi2O3 will effectively increase the photocatalytic activity of TiO2 in visible light.
Type of Study:
Research |
Subject:
education health and promotion Received: 2020/07/16 | Accepted: 2018/10/15 | Published: 2018/10/15