Electrochemical removal of methylene bleu dye in aqueous solution using Ti/RuO2-IrO2 and SnO2 electrodes

The comparison of the degradation efficiency of two electrodes (Ti/RuO 2 -IrO 2 and SnO 2 ) has been evaluated using Methylene Bleu (MB) dye. The effect of several parameters on the degradation process was evaluated and optimized. It was figured out that Ti/RuO 2 -IrO 2 has led to more performant de...

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Bibliographic Details
Published in:Separation science and technology 2020-07, Vol.55 (10), p.1852-1861
Main Authors: Baddouh, Ali, El Ibrahimi, Brahim, Rguitti, M. Mohamed, Mohamed, Errami, Hussain, Sajjad, Bazzi, Lahcen
Format: Article
Language:English
Subjects:
anodic oxidation
Aqueous solutions
Colour
decolorization
Degradation
Dyes
Electrochemistry
Electrodes
Electrolysis
IrO
Methylene
Methylene bleu
Process parameters
Ruthenium oxide
SnO
Sodium chloride
Ti/RuO
Tin dioxide
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Summary:The comparison of the degradation efficiency of two electrodes (Ti/RuO 2 -IrO 2 and SnO 2 ) has been evaluated using Methylene Bleu (MB) dye. The effect of several parameters on the degradation process was evaluated and optimized. It was figured out that Ti/RuO 2 -IrO 2 has led to more performant degradation capacity compared to that of SnO 2 . The optimum degradation efficiency of MB dye on the Ti/RuO 2 -IrO 2 electrode was achieved at j = 40 mA cm −2 , [NaCl] = 0.1 mol L −1 , pH i = 3, [MB] = 100 mg L −1 and T = 25°C. The complete color elimination with 73% of COD elimination was achieved within 90 min of electrolysis.
ISSN:0149-6395
1520-5754
DOI:10.1080/01496395.2019.1608244