Chemical and Materials Engineering Vol. 2(3), pp. 87 - 91
DOI: 10.13189/cme.2014.020305
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Empirical Modeling of Fenton Advanced Oxidation Processes for the Degradation of Linear Alkylbenzene Sulfonates


Ahmadi Mojtaba *, Gorgani Soghraa
Chemical Engineering Department, Faculty of Engineering, Razi University, Kermanshah, Iran

ABSTRACT

Fenton advanced oxidation processes (AOPs) have been examined for their effectiveness at degrading sodium dodecylbenzene sulfonate (SDBS).Central composite design (CCD) of experiments was used to study the effect of process parameters on oxidation of pollutant compounds. The concentrations of SDBS and H2O2 and pH were the independent variables. Experiments were performed at initial concentrations of SDBS 0.5, 1.5 and2.5 mM, initial concentrations of H2O2 0.5, 1.5 and 2.5 mM and pH of 2, 3 and 4. A regression model was used to assess the influence of these independent variables on chemical oxygen demand (COD) removal. Analysis of variance (ANOVA) of the data and the regression model showed that H2O2 and UV irradiation had significant effects on COD removal.COD of the water decreased significantly with increasing the concentration of hydrogen peroxide. The negative coefficient of this variable (pH) indicated that level of the COD removal decreased as the pH increased from 2 to 4. Quadratic models were predicted for the response variable, i.e. COD removal, and the maximum model-predicted removals was38.48%. Optimum conditions for this wastewater treatment was obtained based on the performance of the Fenton's oxidation in the experiment where the initial SDBS concentration was 1.68 mM and the H2O2 initial concentration and pH were 2.27 mM and 3.77, respectively.

KEYWORDS
Advanced Oxidation, Fenton, Sodium Dodecylbenzene Sulfonate, Response Surface Methodology, Central Composite Design

Cite this paper
Ahmadi Mojtaba , Gorgani Soghraa (2014). Empirical Modeling of Fenton Advanced Oxidation Processes for the Degradation of Linear Alkylbenzene Sulfonates. Chemical and Materials Engineering, 2 , 87 - 91. doi: 10.13189/cme.2014.020305.