Study of treating the vegetable oils in artificial water using advanced oxidation process

Abstract

AOPs homogenized advanced oxidation process was studied in Fenton and Photo-Fenton on the treatment of artificial water from vegetable oil contaminants. Several variables were studied: time, pH, mixing speed, and a dose of catalysis (Fe2SO4.7H2O).The best conditions are obtained by studying experiments. Fenton and Photo-Fenton process work at an acidic medium (pH=3.5). The optimum mixing speed at (1000 rpm) for the Photo-Fenton process and (500 rpm) for the Fenton. When concentration of H2O2 was (500 mg/L) obtained the concentration of Fe2SO4.7H2O for the photo-Fenton process = (50 mg/L), and for the Fenton process = (250 mg/L).The Fenton process gave a maximum efficiency of removal of vegetable oils of 95.2% for Corn oil (COD from 12800 to 610 mg/L), 94.5% for Castor oil, while 57.5% for Coconut oil after the total reaction time (180 minutes).The Photo- Fenton process gave an efficiency of removal: 93% for Corn oil (COD from 12500 to 870 mg/L), 83.8% for Castor oil, while 61.6% for Coconut oil.As for the real wastewater, the treatment was acceptable and achieved an efficiency of 89.2%, and 83.8% for Fenton, and Photo-Fenton processes respectively.