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DOI: https://doi.org/10.4491/eer.2018.343
Experimental study of degradation and biodegradability of oxytetracycline antibiotic in aqueous solution using Fenton process
Mustapha Zouanti1, Mohamed Bezzina1, and Ramdhane Dhib2
1VSN Laboratory, Faculty of Science and Technology, University of Djilali Bounaama, Khemis Miliana, Ain-Defla, 44225, Algeria
2Department of Chemical Engineering, Ryerson University, 350 Victoria Street, Toronto, Ontario, Canada
Corresponding Author: Mustapha Zouanti ,Tel: +213-27556844, Email: m.zouanti@univ-dbkm.dz
Received: September 28, 2018;  Accepted: May 8, 2019.
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ABSTRACT
The degradation of aqueous oxytetracycline (OTC) from an aqueous solution antibiotic using H2O2/Fe2+ process was studied in one 1 L batch chemical reactor. The extent of OTC degradation (20 mg/L) was investigated from a known initial pH solution, temperature and the type of catalyst (Fe2+, Fe3+) and for various initial concentrations of OTC, H2O2 and Fe2+. The degradation efficiency achieved was found to be very important (90.82% and 90.63%) at initial pH solution of 3 and 4, respectively. However, the type of catalyst and the reaction temperature had a slight impact on the final degradation of OTC. The results showed that the OTC removal increased with increasing initial H2O2 concentration in the range of 70 to 150 mg/L and initial Fe2+ concentrations in the range of 2 to 5 mg/L. The highest degradation efficiency obtained at ambient temperature was 90.95% with initial concentration of OTC of 10 mg/L, H2O2 = 150 mg/L and Fe2+ = 5 mg/L. Moreover, biodegradability improved from 0.04 to 0.36 and chemical oxygen demand degradation was 78.35% after 60 min of treatment. This study proved that Fenton process can be used for pretreatment of wastewater contaminated by OTC before a biological treatment.
Keywords: Advanced oxidation processes | Chemical degradation | Fenton process | Oxytetracycline | Pharmaceutical wastewater
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