Kinetic modeling of photoassisted-electrochemical process for degradation of an azo dye using boron-doped diamond anode and cathode with carbon nanotubes

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• 作者：Alireza Khataee ; Amirreza Khataee ; Mehrangiz Fathinia ; Behrouz Vahid ; Sang W. Joo
• 关键词：Anodic oxidation ; Carbon nanotubes ; Kinetic modeling ; Boron-doped diamond ; Decolorization
• 刊名：Journal of Industrial and Engineering Chemistry
• 出版年：2013
• 出版时间：25 November, 2013
• 年：2013
• 卷：19
• 期：6
• 页码：1890-1894
• 全文大小：887 K

文摘

To well describe the photoassisted-electrochemical process for treatment of the contaminated water, a new kinetic model was established based on the intrinsic reactions of the process. The kinetic model correlated apparent kinetic constants to operational parameters including applied current, initial dye concentration and flow rate. Degradation experiments were carried out with boron-doped diamond (BDD) anode and carbon nanotubes-polytetrafluoroethylene (CNTs-PTFE) cathode. The proposed kinetic model was validated by the experiments of C.I. Acid Blue 92 degradation in aqueous solution. The goodness of fitting (R² = 0.96) demonstrated that the new model could describe both the kinetics and the hydrodynamics of the photo-electrochemical system.