作者: Meijuan Chen , Wei Chu , Jingzi Beiyuan , Yu Huang
DOI: 10.1016/S1872-2067(18)63070-0
关键词: Kinetics 、 Reagent 、 Irradiation 、 Catalysis 、 Chemistry 、 Nuclear chemistry 、 Photocatalysis 、 Wastewater 、 Ultraviolet light 、 Degradation (geology)
摘要: Abstract A synergistic UV/TiO2/Fenton (PCF) process is investigated for the degradation of ibuprofen (IBP) at circumneutral pH. The IBP decay in PCF much faster than that with conventional UV, UV/H2O2, Fenton, photo-Fenton, and photocatalysis processes. kinetics analysis showed follows a two-stage pseudo-first order profile, is, fast (k1) followed by slow (k2). effects various parameters, including initial pH level, dosage Fenton's reagent TiO2, wavelength UV irradiation, concentration, are evaluated. optimum [Fe2+]0, [Fe2+]0/[H2O2]0 molar ratio, [TiO2]0 determined to be approximately 4.22, 0.20 mmol/L, 1/40, 1.0 g/L, respectively. (i.e., 6.0–8.0 wastewater) shows same efficiency as 4.22 after 30 min, which suggests applicable treatment wastewater range. lnk1 lnk2 observed linearly correlated 1/pH0, [IBP]0, [H2O2]0, [H2O2]0/[Fe2+]0 ln[TiO2]0. Mathematical models therefore derived predict decay.