A comparative study of the advanced oxidation of 2,4-dichlorophenol.
Advanced oxidation processes (AOPs) using UV, UV/H2O2, Fenton and photo-Fenton treatment were investigated at laboratory scale for aqueous solutions of 2,4-dichlorophenol (DCP). The effects on degradation of different reactant concentrations, irradiation time, temperature and pH were assessed. DCP removal, TOC mineralization, dechlorination and change in oxidation state were monitored. UV photolysis was less efficient for total DCP degradation than other AOPs. In contrast, photo-Fenton reaction in acidic conditions led to a higher DCP degradation in a short time. Sixty minutes of treatment were sufficient for 100% DCP removal with 75 mg l(-1) H2O2 and 10 mg l(-1) Fe(II) initial concentrations. In these conditions, a first-order degradation constant for DCP of 0.057 min(-1) was obtained.
Al Momani
Fares
F
Departament d'Enginyeria Química i Metal.lúrgia, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
Sans
Carmen
C
Esplugas
Santiago
S
D002244:Carbon / Q000032:analysis; D002384:Catalysis; D002733:Chlorophenols / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry; D007202:Indicators and Reagents / Q000737:chemistry; D007501:Iron / Q000032:analysis / Q000737:chemistry; D010084:Oxidation-Reduction; D014466:Ultraviolet Rays
D002733:Chlorophenols; C045076:Fenton's reagent; D007202:Indicators and Reagents; D002244:Carbon; D006861:Hydrogen Peroxide; D007501:Iron; C004762:2,4-dichlorophenol