Efficiency of ciprofloxacin removal by ozonation process with calcium peroxide from aqueous solutions

Advanced oxidation processes such as catalytic ozonation are efficient for the removal of antibiotics. Calcium peroxide is one of the catalysts that can be used as a source of hydrogen peroxide. The aim of this study was to determine the efficiency of ciprofloxacin removal by ozonation process with calcium peroxide from aqueous solutions. This experimental study was conducted in Hamadan University of Medical Sciences, 2013. The process consisted of ciprofloxacin with a concentration of 10-100 mg/L, calcium peroxide with a concentration of 0-0.1 mg/L, 1 gr/min ozone (O3), and 30 min reaction time in a semiconductor reactor. In the optimal condition, at pH 3, calcium peroxide 0.025 mg/L, O3 1 gr/min, and initial antibiotic concentration of 10 mg/L, 92% of ciprofloxacin was removed and 45% of chemical oxygen demand was reduced. With regards to the results, the ozonation process with calcium peroxide can be suitable for removal of ciprofloxacin contamination.