title: Ozonation optimization and modeling for treating diesel-contaminated water.
abstract: The effect of ozonation on treatment of diesel-contaminated water was investigated on a laboratory scale. Factorial design and response surface methodology (RSM) were used to evaluate and optimize the effects of pH, ozone flow rate, and contact time on the treatment process. A Box-Behnken design was successfully applied for modeling and optimizing the removal of total petroleum hydrocarbons (TPHs). The results showed that ozonation is an efficient technique for removing diesel from aqueous solution. The determination coefficient (R(2)) was found to be 0.9437, indicating that the proposed model was capable of predicting the removal of TPHs by ozonation. The optimum values of experimental initial pH, degree of O3, and reaction time were 7.0, 1.5, and 35 min, respectively, which could contribute to approximately 60% of TPH removal. This result is in good agreement with the predicted value of 57.28%.
authors: Department of Environmental Science, Faculty of Environment and Energy, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran. Electronic address: s.m.khezri1@gmail.com.
authors: Seyedeh-Somayeh Haghighat
authors: SS
authors: Ziabari
authors: Department of Environmental Science, Faculty of Environment and Energy, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran.
authors: Seyed-Mostafa
authors: SM
authors: Khezri
authors: Department of Environmental Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
authors: Roshanak Rezaei
authors: RR
authors: Kalantary
mesh_terms: D052918:Environmental Restoration and Remediation / Q000379:methods*; D005742:Gasoline / Q000032:analysis*; D006838:Hydrocarbons / Q000737:chemistry; D008962:Models, Theoretical; D010126:Ozone / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D005742:Gasoline; D006838:Hydrocarbons; D014874:Water Pollutants, Chemical; D010126:Ozone
keywords: Diesel; Ozone; RSM; TPH; Water treatment