Chemical oxidation of methylene blue using a Fenton-like reaction

Dutta, Kabita; Mukhopadhyay, Subrata; Bhattacharjee, Sekhar; Chaudhuri, Basab

doi:10.1016/s0304-3894(01)00202-3

Cited by 468 publications

(229 citation statements)

References 34 publications

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“…The increase of TOC elimination and the decrease of naphthalene ring removal with hydrogen peroxide concentration indicate that benzene ring removal is enhanced by the increase of H 2 O 2 concentration. The effect of H 2 O 2 on degradation and TOC removal being similar to those reported by Ramirez et al [4] in the Fenton-like oxidation of Orange II solutions over heterogeneous catalysts based on saponite clay, by Dutta et al [26] in the chemical oxidation of methylene blue using a Fenton-like reaction, by Guedes et al [27] in the Fenton oxidation of cork cooking waste water and by Stolyarova et al [3] in oxidative degradation of Rhodamine 6G over FeZSM-5 zeolites. …”

Section: The Influence Of Ph On Catalytic Oxidationsupporting

confidence: 85%

Heterogeneous Fenton-like degradation of Rhodamine 6G in water using CuFeZSM-5 zeolite catalyst prepared by hydrothermal synthesis

Dükkancı

Gündüz

Yılmaz

et al. 2010

Journal of Hazardous Materials

168

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a b s t r a c tIn this study, heterogeneous Fenton-like degradation of reactive azo dye Rhodamine 6G in water was investigated over a CuFeZSM-5 zeolite catalyst prepared by hydrothermal synthesis. At initial pH of 3.4, a color removal of 100% was achieved after a reaction time of 45 min. TOC elimination was measured to be 51.8% after 2 h of oxidation. Initial decolorization rate was described by an equation of −r A0 = 4.56 × 10 2 e −24.83/RT C R6G,0 C 0.35 H 2 O 2 ,0 where R is in kJ/mol. The leaching of iron and copper cations from zeolite structure into the solution during oxidation was dependent on pH strongly. The regulation of pH from 6.5 (dye solution pH) to 3.4, increased leaching for iron from 0.7 to 0.8 mg/dm 3 and for copper from 1.4 to 2.1 mg/dm 3 . The copper was totally leached from the catalyst during the process at pH 3.4.

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Section: The Influence Of Ph On Catalytic Oxidationsupporting

confidence: 85%

Heterogeneous Fenton-like degradation of Rhodamine 6G in water using CuFeZSM-5 zeolite catalyst prepared by hydrothermal synthesis

Dükkancı

Gündüz

Yılmaz

et al. 2010

Journal of Hazardous Materials

168

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“…Among them, the oxidation using Fenton's reagent has proved to be a promising and attractive treatment method for the effective decolorization and degradation of dyes, as well as for the destruction of a large number of hazardous organic pollutants [5][6][7][8]. Besides, the process is simple and non-expensive, taking place at low temperatures and atmospheric pressure [9].…”

Section: Introductionmentioning

confidence: 99%

Azo-dye orange II degradation by the heterogeneous Fenton-like process using a zeolite Y-Fe catalyst—Kinetics with a model based on the Fermi's equation

Rache

García

Zea

et al. 2014

Applied Catalysis B: Environmental

188

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The degradation of Orange II dye (OII) by a heterogeneous Fenton-like process was studied using a catalyst with 5 wt.% of iron after ion-exchange in a Na-Y zeolite support. The catalyst was characterized by X-ray diffraction (XRD), N2 adsorption, atomic absorption spectroscopy and X-ray fluorescence (XRF). The effect of the initial concentrations of H2O2 and OII, pH and temperature on the degradation rate of OII was investigated by carrying out experiments in a batch reactor. The OII concentration histories (i.e., concentration evolution along reaction time) were described by a simple semi-empirical kinetic model, based on the Fermi's equation, which captures simultaneously the influence of all the reaction conditions with a few adjustable parameters. The adherence of the model to the data was remarkable, and the effect of the operating conditions on the obtained fitting parameters -apparent rate constant and transition timewas analyzed.2

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“…The acid/base property of the β-FeOOH surface hydroxyl groups can be changed with the conversion of pH PZC and pH (as shown in Equations (6) and (7)) [20,21]. 2 …”

Section: Effect Of Initial Ph On Mo Photodegradationmentioning

confidence: 99%

“…Decolorization treatment of azo dye effluents has therefore attracted a great deal of attention. Due to the aromatic character of most dye molecules and the stability of modern dyes, traditional physical and/or chemical methods for removal of these dyes are not efficient enough [2,3].…”

Section: Introductionmentioning

confidence: 99%

Template-Free Hydrothermal Synthesis of β-FeOOH Nanorods and Their Catalytic Activity in the Degradation of Methyl Orange by a Photo-Fenton-Like Process

Xu¹,

Liang²,

Zhou³

2013

OJINM

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The rod-shaped form of crystalline β-FeOOH (akaganeite) was prepared by the template-free hydrothermal method with urea as the homogeneous precipitant. X-ray diffraction, field-emission scanning electron microscope and Fourier transform infrared spectrum were used to characterize the resulting products. The degradation of methyl orange (MO) was studied using the prepared nanostructure materials in a photo-Fenton-like process. MO degradation was effectively achieved by hydroxyl radicals that were generated in the heterogeneous catalysis process. Specific surface area of the prepared β-FeOOH was an important factor affecting the efficiency of MO degradation, which depended on the synthesis conditions such as the reaction temperature, the initial concentration of urea and FeCl 3 ·6H 2 O as well as the n(urea)/n(Fe 3+ ) ratio. The photodegradation efficiencies slightly decreased with the increase of initial pH in the range of 4.5 -9.5, which indicated the prepared β-FeOOH catalyst can well overcome the drawback of a narrow pH range of homogeneous Fenton reaction. β-FeOOH catalysts loading and H 2 O 2 concentration also play important effect on the degradation efficiency of MO. The prepared β-FeOOH showed good ability of reuse for multiple trials.

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Chemical oxidation of methylene blue using a Fenton-like reaction

Cited by 468 publications

References 34 publications

Heterogeneous Fenton-like degradation of Rhodamine 6G in water using CuFeZSM-5 zeolite catalyst prepared by hydrothermal synthesis

Heterogeneous Fenton-like degradation of Rhodamine 6G in water using CuFeZSM-5 zeolite catalyst prepared by hydrothermal synthesis

Azo-dye orange II degradation by the heterogeneous Fenton-like process using a zeolite Y-Fe catalyst—Kinetics with a model based on the Fermi's equation

Template-Free Hydrothermal Synthesis of β-FeOOH Nanorods and Their Catalytic Activity in the Degradation of Methyl Orange by a Photo-Fenton-Like Process

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