Azo dye degradation using Fenton type processes assisted by UV irradiation: A kinetic study

Kušić, Hrvoje; Koprivanac, Natalija; Srsan, Lidija

doi:10.1016/j.jphotochem.2005.11.024

Cited by 148 publications

(78 citation statements)

References 36 publications

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“…In agreement with other authors 39,40 , the use of radiation UVA at EF systems considerably increase the mineralization of organic pollutants since it favors the generation of homogeneous…”

Section: Electro-fenton Processsupporting

confidence: 91%

Degradation of Acid Violet 7 and Reactive Black 5 in Water by Electro-Fenton and Photo Electro-Fenton By

Salazar

Ureta-Zañartu

2012

J. Chil. Chem. Soc.

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The mineralization of solutions containing azo dyes Acid Violet 7 (AV7) and Reactive Black 5 (RB5) in aqueous solutions using electro-Fenton (EF) and Photo electro-Fenton (PEF) methods were determined. The electrochemical system includes a glassy carbon mesh electrode (cathode) with a concentric outer steel mesh as anode. The optimized parameters were: 0.01 mM of Fe 2+ ions, and 250 mA of applied current at pH 3. All experiments were made at 35ºC. The degradation was evaluated by color removal and total organic carbon (TOC) decay for solutions of 250 mg L -1 of both cases. The results indicate that the system achieves a degradation efficiency for both dyes proposed, being observed a quickly decolorization of the solutions and the complete transformation of organic compounds to carbon dioxide. The efficiency process and decoloration kinetic constant were evaluated. Generated carboxylic acids such oxalic, oxamic, citric and maleic were found by ion exclusion chromatography. A comparison of the electrochemical system with respect to Fenton`s and Photo-Fenton reaction was also performed.

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“…In agreement with other authors 39,40 , the use of radiation UVA at EF systems considerably increase the mineralization of organic pollutants since it favors the generation of homogeneous…”

Section: Electro-fenton Processsupporting

confidence: 91%

Degradation of Acid Violet 7 and Reactive Black 5 in Water by Electro-Fenton and Photo Electro-Fenton By

Salazar

Ureta-Zañartu

2012

J. Chil. Chem. Soc.

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“…It was suggested that UV light was able to degrade Fe-complexes formed between iron and organic species, yielding a higher discoloration. AO7 mineralization by both Fe 2+ /H 2 O 2 and Fe(0)/H 2 O 2 processes was significantly enhanced in the presence of UV irradiation, from 34.67 up to 84.12 % and from 39.78 to 90.09 % of removed TOC, respectively [137].…”

Section: Photofentonmentioning

confidence: 91%

An overview on heterogeneous Fenton and photoFenton reactions using zerovalent iron materials

Litter

Slodowicz

2017

Journal of Advanced Oxidation Technologies

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Abstract:The basic and applied aspects of Fenton and Fenton-like processes for removal of pollutants using zerovalent iron materials, including nanoparticles, are reviewed in this article. Only those examples including the use of the iron materials together with hydrogen peroxide addition are included. The mechanistic aspects of homogeneous and heterogeneous Fenton processes, still under discussion, are displayed. The use of biogenic generated iron nanoparticles for removal of pollutants is discussed due to their novelty and economy of synthesis.

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“…(Schulte et al 1995, Kusic et al 2006, Yu et al 2010. At higher concentration, H 2 O 2 reacts with ·OH and generates hydroperoxyl radicals, which are less reactive compared to ·OH (Meric et al 2005, Nidheesh andGandhimathi 2012).…”

Section: Initial Concentration Of Oxidantmentioning

confidence: 99%

Recent advances and prospects of catalytic advanced oxidation process in treating textile effluents

Buthiyappan

Raman

Daud

2016

Reviews in Chemical Engineering

236

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AbstractIn the past few years, there have been many researches on the use of different types of homogenous catalyst for the degradation of textile wastewater in conventional advanced oxidation processes (AOPs). However, homogenous AOPs suffer from few limitations, including large consumption of chemicals, acidic pH, high cost of hydrogen peroxide, generation of iron sludge, and necessity of post-treatment. Therefore, recently, there have been more researches that focus on improving the performance of conventional AOPs using heterogeneous catalysts such as titanium dioxide, nanomaterials, metal oxides, zeolite, hematite, goethite, magnetite, and activated carbon (AC). Besides, different supports such as AC that have been incorporated with transition metals and clays have been proven to have excellent catalytic activity in AOPs. This paper presents a comprehensive review of advances and prospects of catalytic AOPs for the decontamination of a wide range of synthetic and real textile wastewater. This review provides an up-to-date critical review of the information on the degradation of various textile dyes by a wide range of heterogeneous catalysts and adsorbents. The future challenges of AOPs, including chemical consumption, toxicity assessment, reactor design, and limitation of catalysts, are discussed in this paper. In addition, this paper also discusses the presence of ions, generation of by-products, and industrial applications of AOPs. Special emphasis is given to recent studies and large-scale combination of AOPs for wastewater treatment. This review paper concludes that more studies are needed for the kinetics, reactor design, and modeling of hybrid AOPs and the production of their corresponding intermediate products and secondary pollutants. A better economic model should also be developed to predict the cost of AOPs, as the treatment cost varies with dyes and textile effluents.

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Azo dye degradation using Fenton type processes assisted by UV irradiation: A kinetic study

Cited by 148 publications

References 36 publications

Degradation of Acid Violet 7 and Reactive Black 5 in Water by Electro-Fenton and Photo Electro-Fenton By

Degradation of Acid Violet 7 and Reactive Black 5 in Water by Electro-Fenton and Photo Electro-Fenton By

An overview on heterogeneous Fenton and photoFenton reactions using zerovalent iron materials

Recent advances and prospects of catalytic advanced oxidation process in treating textile effluents

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