Diisobutyl phthalate degradation by Fenton treatment

Degradation of diisobutyl phthalate (DIBP) by Fenton oxidation was evaluated in this study. The results indicate that the pH, H₂O₂ and Fe^{2 +} concentration were three main operating factors considerably affecting the decomposition of DIBP. The optimum conditions were observed at pH 3 and the molar ratio of [H₂O₂]: [Fe^{2 +}]: [DIBP] = 5: 5: 1. Under such condition, the maximum removal of DIBP was as high as 87% at a time of 30 minutes. In general, the empirical equation was derived as follows: (dC_DIBP/dt)_initial = −k C_DIBP,0 ^0.88C_{Fe2 +,0} ^0.33C_H2O2 ^0.95.

Keywords:

• Diisobutyl phthalate
• fenton treatment
• hydroxyl radical

Acknowledgments

The authors appreciate National Research Center for Environmental and Hazardous Waste Management (NRC-EHWM), Taiwan National Science Council (NSC), Department of Environmental Resources Management, Chia Nan University of Pharmacy and Science, Department of Chemistry, Faculty of Science, Prince of Songkla University, and Center for Innovation in Chemistry: Postgraduate Education and Research Program in Chemistry (PERCH-CIC) for the support in the finance and laboratory instruments.