Degradation of Amaranth azo dye in water by heterogeneous photo-Fenton process using FeWO4 catalyst prepared by microwave irradiation

FeWO4 particles were synthesized by a simple, rapid and facile microwave technique and their catalytic properties in heterogeneous photo-Fenton reaction were evaluated. This material was employed in the degradation of Amaranth azo dye. Individual and interactive effects of operational parameters suc...

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Bibliographic Details
Published in:Water science and technology 2016-01, Vol.73 (1), p.88-94
Main Authors: da Cruz Severo, Eric, Anchieta, Chayene Gonçalves, Foletto, Vitória Segabinazzi, Kuhn, Raquel Cristine, Collazzo, Gabriela Carvalho, Mazutti, Marcio Antonio, Foletto, Edson Luiz
Format: Article
Language:English
Subjects:
Adsorption
Amaranth
Amaranth Dye - chemistry
Azo Compounds - chemistry
Azo dyes
Carcinogens
Catalysis
Catalysts
Chemical synthesis
Chemistry
Color
Coloring Agents
Colour
Crystallization
Decoloring
Decolorization
Degradation
Dosage
Dyes
Fourier transforms
Hydrogen peroxide
Hydrogen Peroxide - chemistry
Iron - chemistry
Irradiation
Light
Microwaves
Nanoparticles
Optical properties
Organic carbon
Oxidation
Oxides - chemical synthesis
Particulate composites
Photocatalysis
Photolysis
Porous materials
Removal
Reuse
Tungsten Compounds - chemical synthesis
Wastewater
Wastewater treatment
Water
Water Purification - methods
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Summary:FeWO4 particles were synthesized by a simple, rapid and facile microwave technique and their catalytic properties in heterogeneous photo-Fenton reaction were evaluated. This material was employed in the degradation of Amaranth azo dye. Individual and interactive effects of operational parameters such as pH, dye concentration and H2O2 dosage on the decolorization efficiency of Amaranth dye were evaluated by 2(3) central composite design. According to characterization techniques, a porous material and a well-crystallized phase of FeWO4 oxide were obtained. Regarding the photo-Fenton reaction assays, up to 97% color and 58% organic carbon removal were achieved in the best experimental conditions. In addition, the photo-Fenton process maintained treatment efficiency over five catalyst reuse cycles to indicate the durability of the FeWO4 catalyst. In summary, the results reveal that the synthesized FeWO4 material is a promising catalyst for wastewater treatment by heterogeneous photo-Fenton process.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2015.469