Efficiency of Advanced H2O2/ZnO Oxidation Process in Ceftriaxone Antibiotic Removal from Aqueous Solutions

Document Type : Research Paper


1 MSc in Environmental Health Engineering, Department of Environmental Health Engineering, Faculty of Health, Shahrekord University of Medical Sciences, Shahrekord, Iran

2 Assist. Prof. of Environmental Health Engineering, Department of Environmental Health Engineering, Faculty of Health, Shahrekord University of Medical Sciences, Shahrekord, Iran

3 Assist. Prof. of Environmental Health Engineering, Department of Environmental Health Engineering, Faculty of Health, Shahrekord University of Medical Sciences

4 MSc in Environmental Health Engineering, Staff member of Molecular Cell Biology and Medicinal Plants Research Center, Shahrekord University of Medical Sciences. Shahrekord, Iran


A major concern about pharmaceutical pollution is the presence of antibiotics in water resources through their release into sewers where they cause bacterial resistance and enhanced drug-resistance in human-borne pathogens and growing microbial populations in the environment. The objective of this study was to investigate the efficiency of  the advanced H2O2/ZnO oxidation process in removing ceftriaxone from aqueous solutions. For this purpose, an experimental study was conducted in which the SEM, XRD, and TEM techniques were employed to determine the size of Zinc oxide nano-particles. Additionally, the oxidation process parameters of pH (3-11), molar ratio of H2O2/ZnO (1.5-3), initial concentration of ceftriaxone (5–15 mg/L), and contact time (30-90 min) were investigated. Teh data thus obntained were subjected top statistical analysis using the SPSS (ANOVA test). XRD results revealeda hexagonal crystal structure for the nano-ZnO. TEM images confirmed the spherical shape of the nanoparticles. Finally, SEM images revealed that the Zn nanoparticles used in this study were less than 30 nanometers in diameter. Based on the results, an optimum pH of 11, a contact time of 90 minutes, and a H2O2/ZnO molar ratio equal to 1.5 were the optimum conditions to achieve a ceftriaxone removal efficiency of 92%. The advance H2O2/ZnO oxidation process may thus be claimed to be highly capable of removing ceftriaxone from aqueous solutions.


Main Subjects

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