Electrochemical oxidation of textile dye indigo

Dogan, Dogan; Türkdemir, Haluk

doi:10.1002/jctb.1262

Cited by 72 publications

(47 citation statements)

References 36 publications

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“…The anodic material is very important for the electrochemical oxidation processes. Various materials are used as anodes: Pt [7,8], boron-doped diamond [9], graphite [10] activated carbon fiber [11] and electrodes based on metal oxides, such as PbO2, RuO2, IrO2, SnO2, SbOx etc. and their mixtures.…”

Section: Ho2• + H2o2→ •Oh + H2o + O2 Eq (3)mentioning

confidence: 99%

Synthesis and characterization of new Ti–Bi2O3 anode and its use for reactive dye degradation

Petrović

Mitrović

Antonijević

et al. 2015

Materials Chemistry and Physics

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This paper reports the synthesis, characterization and application of a Ti-Bi2O3 anode for the electrochemical decolorization of the textile dye Reactive Red 2. The anode was synthesized by electrodeposition on a Ti substrate immersed in an acidic bismuth (III) solution at constant potential, followed by calcination in air at 600°C. Thermogravimetric Analysis (TGA), Energydispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD) analysis revealed that the electrodeposited material was predominantly metallic bismuth, which was oxidized to pure α-Bi2O3 during the calcination in air. SEM micrographs revealed that the Bi2O3 coat at the anode surface was inhomogeneous and porous. Reactive Red 2 was completely electrochemically decolorized at the synthesized anode in the presence of H2O2. The applied current density, H2O2 and Na2SO4 concentration, medium pH and initial dye concentration affected the dye decolorization rate. The optimal process parameters were found to be as follows: an applied current density of 40 mA cm -2 using a mixture of 10 mmol dm -3 H2O2 and 10 mmol dm -3 Na2SO4 at pH 7. The dye decolorization rate was shown to decrease as its initial concentration increased. The decolorization reactions were found to follow pseudo-first order kinetics.

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Section: Ho2• + H2o2→ •Oh + H2o + O2 Eq (3)mentioning

confidence: 99%

Synthesis and characterization of new Ti–Bi2O3 anode and its use for reactive dye degradation

Petrović

Mitrović

Antonijević

et al. 2015

Materials Chemistry and Physics

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“…As an alternative, electrochemical oxidation appears to be a promising method to solve the environmental problems caused by discharge of dye effluents [15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical oxidation of Acid Yellow 1 using diamond anode

et al. 2009

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The electrochemical oxidation of a synthetic wastewater containing Acid Yellow 1 on boron-doped diamond was investigated. The influence of applied current (0.5-3 A), dye concentration (1-3 g L -1 ), temperature (25-40°C) and flow-rate (75-300 L h -1 ) on colour removal and current efficiency was evaluated. It was demonstrated that the complete decolourization and COD removal were achieved in any experimental conditions indicating that the electrochemical oxidation on BDD electrodes is a suitable method for treatment of wastewaters polluted with synthetic dyes. In particular it was found that the decay of Acid Yellow 1 follows a pseudo-first-order kinetic and the oxidation rate was favoured by increasing current and flow-rate, while it was almost unaffected by solution temperature.

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“…It is usually treated by physical-or chemical-treatment processes (BANAT et al 1996, DOGAN andTURKDEMIR 2005). Adsorption on activated carbon has been found to be an effective process for dye removal from dye wastewater, but it is too expensive.…”

mentioning

confidence: 99%

Adsorptive removal of textile dyes from aqueous solutions by dead fungal biomass

Asma

Kahraman

Cing

et al. 2006

J. Basic Microbiol.

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Dead fungal biomass prepared from Phanerochaete chrysosporium and Funalia trogii was tested for their efficiency in removal of textile dyes. The effects of contact time, initial dye concentration, amount of dead biomass and agitation rate on dye removal have been determined. Removal of all dyes required a very short time (60 min). Experimental results show that, P. chrysosporium was more effective than F. trogii . An increase in the amount of dead biomass positively affected of the dye removal. The removal efficiency of different amount of biomass was in order 1 g > 0.5 g > 0.2 g > 0.1 g. The highest removal was obtained at 150-200 rpm. Slightly lower removing activities were found at lower agitation rates. This study showed that it was possible to remove textile dyes by dead biomass of P. chrysosporium .

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Electrochemical oxidation of textile dye indigo

Cited by 72 publications

References 36 publications

Synthesis and characterization of new Ti–Bi2O3 anode and its use for reactive dye degradation

Synthesis and characterization of new Ti–Bi2O3 anode and its use for reactive dye degradation

Electrochemical oxidation of Acid Yellow 1 using diamond anode

Adsorptive removal of textile dyes from aqueous solutions by dead fungal biomass

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