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

• Main Authors: Roghayeh Khazaei, Akireza Rahmani, Abdolmotaleb Seidmohammadi, Javad Faradmal, Mostafa Leili
• Format: Article
• Language: fas
• Published: Kurdistan University of Medical Sciences 2019-10-01
• Series: مجله علمی دانشگاه علوم پزشکی کردستان
• Subjects: advanced oxidation pocesses (aops); peroxymonisulfate; cefexime; ultraviolet radiation (uv)
• Online Access: http://sjku.muk.ac.ir/article-1-4883-en.html
• ISSN: 1560-652X; 2345-4040

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.