Photochemical mineralization of di-n-butyl phthalate with H2O2/Fe3+.
This study evaluated the performance of photo-Fenton reaction initiated by the UV irradiation with H(2)O(2)/Fe(3+), denoted as UV/H(2)O(2)/Fe(3+), to decompose di-n-butyl phthalate (DBP) in the aqueous solution. The concentration of total organic carbon (TOC) was chosen as a mineralization index of the decomposition of DBP by the UV/H(2)O(2)/Fe(3+) process. A second-order kinetic model with respect to TOC was adequately adopted to represent the mineralization of DBP by the UV/H(2)O(2)/Fe(3+) process. The experimental results of this study suggested that the dosages with 4.74 x 10(-5) mol min(-1)L(-1) H(2)O(2) and initial Fe(3+) loading concentration of 4.50 x 10(-4) mol L(-1) in the solution at pH 3.0 with 120 microW cm(-2) UV (312 nm) provided the optimal operation conditions for the mineralization of DBP (5 mg L(-1)) yielding a 92.4% mineralization efficiency at 90 min reaction time.
Chiou
Chyow-San
CS
Department of Environmental Engineering, National I-Lan University, I-Lan 260, Taiwan. chiou33@ms7.hinet.net
Chen
Yi-Hung
YH
Chang
Chang-Tang
CT
Chang
Ching-Yuan
CY
Shie
Je-Lueng
JL
Li
Yuan-Shan
YS
D002412:Cations / Q000737:chemistry; D003993:Dibutyl Phthalate / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007501:Iron / Q000737:chemistry*; D007700:Kinetics; D008903:Minerals / Q000737:chemistry*; D010777:Photochemistry
D002412:Cations; D008903:Minerals; D003993:Dibutyl Phthalate; D006861:Hydrogen Peroxide; D007501:Iron