Optimization of Fenton process operating conditions for the treatment of the landfill leachate of Fez city (Morocco)

• DOI: 10.1007/s13762-021-03393-0
• Publication Date: 2021-05-26T16:03:28Z
• Authors: I. El Mrabet; B. Ihssane; H. Valdés; H. Zaitan
• Keywords: Box–Behnken design; Statistical Analysis

In this work, the landfill leachate of Fez city (Morocco) is characterized physicochemically and the feasibility to apply a Fenton process is evaluated. A design of experiments based on Box–Behnken combined with a response surface methodology was used to assess the effect of three operating variables (pH, Fe2+ and H2O2 dosages) on two target responses: COD and color removal. The results of the analysis of variances demonstrate that both responses are significantly affected by Fe2+ dosage and pH. Statistical and graphical analyses show that maximum efficiencies of 85% and 96% are obtained in terms of COD and color removal, respectively, when operating conditions are set in pH = 2.8, [Fe2+] = 1621 mg L−1 and [H2O2] = 2500 mg L−1.