Optimization of Fenton oxidation process for treatment of hexogeon industrial wastewater using response surface methodology

Fenton oxidation technology was applied to treat hexogeon industrial wastewater and response surface methodology was used to optimize the effects of the FeSO4 concentration, H2O2 concentration, pH value, and temperature. A quadratic model was obtained as the result of this design. In the optimization, the coefficient of variation is only 3.17%, indicating a good precision and reliability of the experimental. The coefficient of association (R2) and adj-R2 for quadratic model were evaluated quite satisfactorily as 0.98 and 0.96, respectively. The predicted optimum conditions were determined as 763 mg L−1 of FeSO4 concentration, 107 mg L−1 of H2O2 concentration, 2.64 of pH, and 19°C with 83.5% of chemical oxygen demand removal. The experimental result was 82.92% under optimizing reaction factors.