title: Comparative study of the degradation of carbamazepine in water by advanced oxidation processes.
abstract: Degradation of carbamazepine (CBZ) using ultraviolet (UV), UV/H2O2, Fenton, UV/Fenton and photocatalytic oxidation with TiO2 (UV/TiO2) was studied in deionized water. The five different oxidation processes were compared for the removal kinetics of CBZ. The results showed that all the processes followed pseudo-first-order kinetics. The direct photolysis (UV alone) was found to be less effective than UV/H2O2 oxidation for the degradation of CBZ. An approximate 20% increase in the CBZ removal efficiency occurred with the UV/Fenton reaction as compared with the Fenton oxidation. In the UV/TiO2 system, the kinetics of CBZ degradation in the presence of different concentrations of TiO2 followed the pseudo-first order degradation, which was consistent with the Langmuir-Hinshelwood (L-H) model. On a time basis, the degradation efficiencies ofCBZ were in the following order: UV/Fenton (86.9% +/- 1.7%) > UV/TiO2 (70.4% +/- 4.2%) > Fenton (67.8% +/- 2.6%) > UV/H2O2 (40.65 +/- 5.1%) > UV (12.2% +/- 1.4%). However, the lowest cost was obtained with the Fenton process.
authors.affiliation: College of Civil Engineering, Tongli University, Shanghai 200092, China.
authors.forename: Chao-Meng
authors.initials: CM
authors.lastname: Dai
authors.forename: Xue-Fei
authors.initials: XF
authors.lastname: Zhou
authors.forename: Ya-Lei
authors.initials: YL
authors.lastname: Zhang
authors.forename: Yan-Ping
authors.initials: YP
authors.lastname: Duan
authors.forename: Zhi-Min
authors.initials: ZM
authors.lastname: Qiang
authors.forename: Tian C
authors.initials: TC
authors.lastname: Zhang
mesh_terms: D002220:Carbamazepine / Q000737:chemistry* / Q000528:radiation effects; D006861:Hydrogen Peroxide; D007501:Iron; D007700:Kinetics; D010084:Oxidation-Reduction; D017319:Photosensitizing Agents; D014025:Titanium; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000528:radiation effects
chemical_list: C045076:Fenton's reagent; D017319:Photosensitizing Agents; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; D002220:Carbamazepine; D006861:Hydrogen Peroxide; D014025:Titanium; D007501:Iron