Oil refinery wastewater treatment using physicochemical, Fenton and Photo-Fenton oxidation processes.
The objective of this study was to investigate the application of advanced oxidation processes (AOPs) to the treatment of wastewaters contaminated with hydrocarbon oil. Three different oil-contaminated wastewaters were examined and compared: (i) a 'real' hydrocarbon wastewater collected from an oil refinery (Conoco-Phillips Whitegate refinery, County Cork, Ireland); (ii) a 'real' hydrocarbon wastewater collected from a car-wash facility located at a petroleum filling station; and (iii) a 'synthetic' hydrocarbon wastewater generated by emulsifying diesel oil and water. The AOPs investigated were Fe(2+)/H(2)O(2) (Fenton's reagent), Fe(2+)/H(2)O(2)/UV (Photo-Fenton's reagent) which may be used as an alternative to, or in conjunction with, conventional treatment techniques. Laboratory-scale batch and continuous-flow experiments were undertaken. The photo-Fenton parametric concentrations to maximize COD removal were optimized: pH = 3, H(2)O(2) = 400 mg/L, and Fe(2+) = 40 mg/L. In the case of the oil-refinery wastewater, photo-Fenton treatment achieved approximately 50% COD removal and, when preceded by physicochemical treatment, the percentage removal increased to approximately 75%.
Basic Engineering Science Department, Faculty of Engineering, Shbin El-Koum, Minoufiya University, Minoufiya, Egypt. maha_tony1@yahoo.com
Maha A
MA
Tony
Patrick J
PJ
Purcell
Yaqian
Y
Zhao
D057919:Biological Oxygen Demand Analysis; D006838:Hydrocarbons / Q000737:chemistry* / Q000528:radiation effects; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D007501:Iron / Q000737:chemistry*; D010084:Oxidation-Reduction; D010578:Petroleum; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000528:radiation effects
C045076:Fenton's reagent; D006838:Hydrocarbons; D007220:Industrial Waste; D010578:Petroleum; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide; D007501:Iron