Evaluation of the Efficiency of photocatalytic UV/ peroxymonosulfate process in the removal of cefexime antibiotic from aqueous solutions

Authors

  • Faradmal, Javad Associate Professor of Biostatistics and Epidemiology, Department of Biostatistics and Epidemiology, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran.
  • Khazaei, Roghayeh MSc Student of Environmental Health Engineering, Department of Environmental Health Engineering, School of Public Health and Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan, Iran.
  • Leili, Mostafa Associate Professor of Environmental Health Engineering, Department of Environmental Health Engineering, School of Public Health and Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran
  • Rahmani, Akireza Professor of Environmental Health Engineering, Department of Environmental Health Engineering, School of Public Health and Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan.
  • Seidmohammadi, Abdolmotaleb Associate Professor of Environmental Health Engineering, Department of Environmental Health Engineering and Social Determinants of Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.
Abstract:

Back­ground and Aim: Pharmaceuticals, especially antibiotics, are new contaminants that because of their cumulative nature, adverse effects and drug resistance; have created a major environmental concern. The aim of this study was to evaluate UV/peroxymonosulfate (UV/PMS) process efficiency in the removal of cefexime antibiotic from aqueous solution. Materials and Methods: This experimental laboratory study was conducted in batch mode. We assessed the effects of main operational parameters such as solution pH (3-9), reaction time (0-30 min), photocatalyst dosage (0.75-2.25 mmol/L), and initial concentration of cefexime (5-25 mg/L) on removal efficiency. Spectrophotometer (HACH DR-5000 UV–Vis) was used to measure the initial and final concentrations of cefexime. Results: Under optimal condition (pH=7.5, irradiation time=30 min, C0=5 mg/L, and PMS dosage=1.37 mmol/L), use of photocatalytic UV/peroxymonosulfate led to efficient removal of cefexime (93.18%). Conclusion: The results of this study showed the acceptable performance of peroxymonosulfate process in the removal of cefexime.

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Journal title

volume 24  issue 4

pages  22- 40

publication date 2019-10

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