Author/Authors :
Dehghani، Somayyeh نويسنده Department of physical education ,Marvdasht Branch, Islamic Azad university,Marvdasht,Iran. , , onidi Jafari، Ahmad نويسنده 2Department of Environmental Health, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran , , Farzadkia، Mahdi نويسنده Associate Professor, Department of Environmental Health Engineering , , Gholami، Mitra نويسنده 1Depatment of Environmental Engineering, School of Public Health, Center for Water Quality Research, Tehran University of Medical Sciences, Tehran, Iran ,
Abstract :
Presence of antibiotics in the environment may cause potential risk for aquatic environment and
organisms. In this research, Fenton oxidation process was offered as an effective method for removal of antibiotic
sulfamethoxazole from aqueous solutions. The experiments were performed on laboratory-scale study under
complete mixing at 25±2°C. The effects of initial antibiotic concentration, molar ratio of H2O2/Fe+2, solution pH,
concentration of H2O2, Fe+2 and reaction time was studied on the oxidation of sulfamethoxazole in three
level. The results indicated that the optimal parameters for Fenton process were as follows: molar ratio of [H2O2]/
[Fe+2] = 1.5, pH= 4.5, and contact time= 15 min. In this situation, the antibiotic removal and COD reduction were
achieved 99.99% and 64.7-70.67%, respectively. Although, Fenton reaction could effectively degrade antibiotic
sulfamethoxazole under optimum experimental conditions, however, the rate of mineralization was not completed.
This process can be considered to eliminate other refractory antibiotics with similar structure or to increase their
biodegradability.
