Corresponding Author

Hai-bo LIN(lhb910@jlu.edu.cn)


The electrocatalytic oxidation degradation kinetics of oxalic acid in a cylindrical electrochemical reactor with Ti/IrO2-Ta2O5 as an anode was studied. The relation between instantaneous current efficiency and organic concentration in bulk was established based on the two paths for direct electrochemical oxidations, and the theoretical model was verified by experiments. The experimental resultswere reasonably consistent with the established kinetic model. Furthermore, the competition between the two paths was explored with the modelparameter analysis.

Graphical Abstract


electrochemical oxidation, Ti/IrO2-Ta2O5, anode, oxalic acid, theoretical model

Publication Date


Online Available Date


Revised Date


Received Date



[1] Rajeshwar K, Ibanex J G, Swain G M. Electrochemistry and the Environment[J]. Journal of Applied Electrochemistry, 1994, 24(11): 1077-1091.

[2] Jüttner K, Galla U, Schmieder H. Electrochemical approaches to environmental problems in the process industry[J]. Electrochimica Acta, 2000, 45(15-16): 2575-2594.

[3] Mook W T, Chakrabarti M H, Aroua M K, et al. Removal of total ammonia nitrogen (TAN), nitrate and total organic carbon (TOC) from aquaculture wastewater using electrochemical technology: A review[J]. Desalination, 2012, 285(1): 1-13.

[4] Rajkumar D, Palanivelu K. Electrochemical treatment of industrial wastewater[J]. Journal of Hazardous Materials. 2004, 113(1/3): 123-129.

[5] Carlos A. Martínez H, Enric B. Decontamination of wastewaters containing synthetic organic dyes by electrochemical methods: A general review[J]. Applied Catalysis B: Environmental, 2009, 87(3/4): 105-145.

[6] Panizza M., Cerisola G. Direct and mediated anodic oxidation of organic pollutants[J]. Chemical Review, 2009, 109(12): 6541-6569.

[7] Lin H B(林海波), Wu Z Y(伍振毅), Huang W M(黄为民), et al. Development and direction of electrochemical technologies for industrial wastewater treatment[J]. Chemical Industry and Engineering Progress(化工进展), 2008, 27(2): 223-230.

[8] Carlos A, Martínez H, Sergio F. Electrochemical oxidation of organic pollutants for the wastewater treatment: Direct and indirect processes[J]. Chemical Society Reviews, 2006, 35(12): 1324-1340.

[9] Carlos A, Martínez H, Sergio Ferro. A, et al. Electrochemical incineration of oxalic acid: Role of electrode material[J]. Electrochimica Acta, 2004, 49(22/23): 4027-4034

[10] Comninellis C. Electrocatalysis in the electrochemical conversion/combustion of organic pollutants for wastewater treatment[J]. Electrochimica Acta, 1994, 39(11/12): 1857-1862.

[11] Scialdone O, Randazzo S, Galia A, et al. Electrochemical oxidation of organics at metal oxide electrodes: The incineration of oxalic acid at IrO2-Ta2O5 (DSA-O2) anode[J]. Electrochimica Acta, 2009, 54(4): 1210-1217.

[12] Treimer S E, Feng J, Scholten M D, et al. Comparison of voltammetric responses of toluene and xylenes at iron(III)-doped, bismuth(V)-doped, and undoped β-lead dioxide film electrodes in 0.50 M H2SO4[J]. Journal of The Electrochemical Society, 2001, 148(12): E459-464.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.