Comparative degradation of Metanil Yellow in the electro-Fenton process with different catalysts: A simplified kinetic model study

Grzegorz Matyszczak , Agata Sędkowska , Stanisław Kuś

Abstract

Degradation of azo-dye Metanil Yellow in the electrochemical Fenton process has been investigated. Different catalysts have been used: Fe2+, Co2+, Mn2+, Ni2+, and Ce3+ to compare their catalytic activity in the electro-Fenton process. A relatively simplified kinetic model based on rate-limiting step approximation has been constructed to describe the behavior of different catalysts. It consists of only the most important reactions and doesn't include the detailed mechanism of degradation of a molecule of dye. Experimental data have been used to fit the parameters of this model. Kinetic constants of the reaction of catalyst cation with hydrogen peroxide were estimated and based on its comparison of catalytic activity of different cations has been made. The kinetic constant of that reaction with Fe2+ is the same as reported in the literature previously. Our simplified model is in very good agreement with experimental data and allows us to estimate the mean value of hydroxyl radicals needed for the destruction of one molecule of pollutant dye.
Author Grzegorz Matyszczak (FC / CChT)
Grzegorz Matyszczak,,
- Chair of Chemical Technology
, Agata Sędkowska (FC / CChT)
Agata Sędkowska,,
- Chair of Chemical Technology
, Stanisław Kuś (FC / CAC)
Stanisław Kuś,,
- Chair Of Analytical Chemistry
Journal seriesDyes and Pigments, ISSN 0143-7208, e-ISSN 1873-3743
Issue year2020
Vol174
Pages1-6
Publication size in sheets0.5
Article number108076
Keywords in EnglishElectro-Fenton process, Metanil yellow, Decolorization, Kinetic model, Azo-dye removal
ASJC Classification1500 General Chemical Engineering; 1508 Process Chemistry and Technology
DOIDOI:10.1016/j.dyepig.2019.108076
URL https://www.sciencedirect.com/science/article/pii/S0143720819315839?via%3Dihub
Languageen angielski
File
1-s2.0-S0143720819315839-main.pdf 1,019.13 KB
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 14-09-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.909; WoS Impact Factor: 2018 = 4.018 (2) - 2018=3.582 (5)
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