COLOR REMOVAL FROM LEACHATE BY PHOTO-FENTON PROCESS
- 1. Selçuk University, Engineering Faculty, Environmental Engineering Department, Konya, Turkey
- 2. Selçuk University, Engineering Faculty, Environmental Engineering Department, Konya, Turkey
- 3. Selçuk University, Engineering Faculty, Environmental Engineering Department, Konya, Turkey
- 4. Selçuk University, Engineering Faculty, Department of Environmental Engineering, Konya, Turkey
Abstract: Leachate forms as a result of rainwater falling into the solid waste dumping site and decompositon of organics. The leachate contains high amounts of organic matter, inorganic matter and heavy metals. Leachate must be treated to prevent pollution of surface water, groundwater and soil. In this study, the treatment of leachate is discussed by using advanced oxidation methods. Fenton process and UV irradiation was used simultaneously (Photo-Fenton) to determine the color removal efficiency. The purpose of the Photo-Fenton process is to form more OH radicals as a strong oxidizer. The color values of the leachate sample taken from the solid waste landfill site was obtained as 37.68 m-1 at 436 nm, 14.85 m-1 at 525 nm and 6.89 m-1 at 620 nm. Experimental studies have been carried out to determine the effect of pH, reaction time, Fe(II) and H2O2 d on the removal efficiency. Maximum color removal efficiency was obtained at pH 3, 2550 mg/L Fe(II) and 25500 mg/L H2O2 doses. Maximum color removal efficiencies at 436 nm,525 nm; and 620 nm were obtained as 98.8%, 99.4% and 99.4%, respectively.