2014
DOI: 10.1007/s11356-014-2918-4
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Electrochemical removal of synthetic textile dyes from aqueous solutions using Ti/Pt anode: role of dye structure

Abstract: In this work, the efficiency of electrochemical oxidation (EO) was investigated for removing a dye mixture containing Novacron Yellow (NY) and Remazol Red (RR) in aqueous solutions using platinum supported on titanium (Ti/Pt) as anode. Different current densities (20, 40 and 60 mA cm(-2)) and temperatures (25, 40 and 60 °C) were studied during electrochemical treatment. After that, the EO of each of these dyes was separately investigated. The EO of each of these dyes was performed, varying only the current den… Show more

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Cited by 52 publications
(9 citation statements)
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“…The • OH attack leads to the pollutant hydroxilation and the subsequent cleavage of the azo bond (the cromophore group) (Vasconcelos et al 2015). In this frame, the enhancement on the decolorization efficiency is directly related to the functional groups and their position in the molecular structure of these dyes (Garcia-Segura et al 2011;Araújo et al 2014;Vasconcelos et al 2015). In fact, this effect is more significant when more clear changes are observed in the chemical structure.…”
Section: Resultsmentioning
confidence: 99%
“…The • OH attack leads to the pollutant hydroxilation and the subsequent cleavage of the azo bond (the cromophore group) (Vasconcelos et al 2015). In this frame, the enhancement on the decolorization efficiency is directly related to the functional groups and their position in the molecular structure of these dyes (Garcia-Segura et al 2011;Araújo et al 2014;Vasconcelos et al 2015). In fact, this effect is more significant when more clear changes are observed in the chemical structure.…”
Section: Resultsmentioning
confidence: 99%
“…Besides the economic benefits, these industries release a large amount of highly toxic dyes in wastewater every year, most of which have negative effects on human and animal health. Various techniques such as adsorption [1][2][3][4], catalysis [5,6], electrochemical oxidation [7], ozonation [8], membrane filtration [9], biological treatment [10], and enzymes [11] have been used to remove the dye components from polluted wastewater. Phenol red is a fabric dye and if we are exposed to the dye, it will affect the respiratory system and human skin [12].…”
Section: Introductionmentioning
confidence: 99%
“…where C 0 is the initial RB19 concentration (mg L À1 ), t is the EC treatment time (min), V is the voltage between the electrodes (Vpp), and Y is the RB19 removal efficiency (%) 33 that is calculated using eqn (2). 3.5.4.…”
Section: Energy Consumptionmentioning
confidence: 99%