@article{Le_Dung_Huong_Dien_Uyen_2021, title={Study on some parameters affecting the degradation of methylene blue in water by electro-fenton using Ti/PbO<sub>2</sub> anode}, volume={59}, url={https://vjs.ac.vn/index.php/jst/article/view/15932}, DOI={10.15625/2525-2518/59/5/15932}, abstractNote={In this work, the combination of two advanced oxidation processes, electro-Fenton (hydroxyl radical &lt;sup&gt;●&lt;/sup&gt;OH generated by reactions on cathode) and anodic oxidation (&lt;sup&gt;●&lt;/sup&gt;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 ([Fe&lt;sup&gt;2+&lt;/sup&gt;]) and MB concentration (C&lt;sub&gt;0&lt;/sub&gt;) 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 [Fe&lt;sup&gt;2+&lt;/sup&gt;] = 0.1 mM; pH 3.0; [Na&lt;sub&gt;2&lt;/sub&gt;SO&lt;sub&gt;4&lt;/sub&gt;] = 0.05 M; i = 2.5 mA.cm&lt;sup&gt;-2&lt;/sup&gt; 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/PbO&lt;sub&gt;2 &lt;/sub&gt;electrode is a prospective method for destruction of persistent dyes.}, number={5}, journal={Vietnam Journal of Science and Technology}, author={Le, Son Thanh and Dung , Tran Nguyen and Huong, Tran Thu and Dien, Nguyen Tran and Uyen, Dao Phuong}, year={2021}, month={Oct.}, pages={609–622} }