• Son Thanh Le Institute of Environmental Technology, Vietnam Academy of Science and Technology
  • Dung Tran Nguyen Institute of Environmental Technology, Vietnam Academy of Science and Technology
  • Huong Thu Tran Institute of Environmental Technology, Vietnam Academy of Science and Technology
  • Dien Tran Nguyen Institute of Environmental Technology, Vietnam Academy of Science and Technology
  • Uyen Phuong Dao Faculty of Environmental Sciences, VNU University of Science



Combination, anodic oxidation, electro-Fenton, methylene blue removal, Ti/PbO2, color removal, textile wastewater


In this work, the combination of two advanced oxidation processes, electro-Fenton (hydroxyl radical OH generated by reactions on cathode) and anodic oxidation (OH produced directly on anode), in the same reactor was studied to evaluate the treatment of methylene blue (MB) dye in aqueous solutions. This electrochemical system was equipped with a commercial carbon felt cathode (9.5cm 12cm), lead dioxide-coated titanium anode (10 12cm), direct current (DC) and continuously aerated. The effects of operating parameters such as pH, applied current (I), catalyst concentration ([Fe2+]) and MB concentration (C0) on MB removal efficiency were investigated through monitoring MB concentration at different times by spectrophotometric method. An optimal process was achieved at the condition of [Fe2+] = 0.1 mM; pH 3.0; [Na2SO4] = 0.05 M; i = 2.5 and after 60 minutes of electrolysis, 92.19% of MB was removed which was far higher than the figure obtained by using individually electro-Fenton (73.77%) or anodic oxidation (58.04%). These experimental results have demonstrated that the combination of electro-Fenton and anodic oxidation using Ti/PbO2 electrode is a prospective method for destruction of persistent dyes.


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How to Cite

Le, S. T., Nguyen, D. T., Tran, H. T., Nguyen, D. T., & Dao, U. P. (2021). THE STUDY ON SOME PARAMETERS AFFECTING THE DEGRADATION OF METHYLENE BLUE IN WATER BY ELECTRO-FENTON USING TI/PBO2 ANODE. Vietnam Journal of Science and Technology, 59(5).