Oxidative degradation of diethyl phthalate by photochemically-enhanced Fenton reaction.
A kinetic investigation into the photo-degradation of aqueous diethyl phthalate by Fenton reagent was conducted in this study. The obtained results showed the enhancement of diethyl phthalate (DEP) decomposition by UV irradiation with the Fenton reaction. It was found that H2O2 concentration, Fe2+ concentration, and aqueous pH value were the three main factors that could significantly influence the degradation rates of DEP. The highest degradation percentage (75.8%) of DEP was observed within 120 min at pH 3 in the UV/H2O2/Fe2+ system, with original H2O2 and Fe2+ concentrations of 5.00 x 10(-4) and 1.67 x 10(-4)mol L(-1), respectively. The present study provides an effective approach to the treatment of wastewater containing DEP.
Yang
Gui-Peng
GP
College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003, PR China. gpyang@mail.ouc.edu.cn
Zhao
Xue-Kun
XK
Sun
Xiao-Jing
XJ
Lu
Xiao-Lan
XL
D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste / Q000517:prevention & control*; D007501:Iron / Q000737:chemistry*; D007700:Kinetics; D009994:Osmolar Concentration; D010084:Oxidation-Reduction; D010777:Photochemistry / Q000379:methods*; D010795:Phthalic Acids / Q000737:chemistry*; D014466:Ultraviolet Rays; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D014877:Water Pollution, Chemical / Q000517:prevention & control*
C045076:Fenton's reagent; D007220:Industrial Waste; D010795:Phthalic Acids; D014874:Water Pollutants, Chemical; D014867:Water; D006861:Hydrogen Peroxide; D007501:Iron; C007379:diethyl phthalate