Catalytic Ozonation of Melanoidin in Aqueous Solution over CoFe^sub 2^O^sub 4^ Catalyst

In this work, cobalt ferrite (CoFe2O4) was synthesized by solvothermal route for application as a catalyst in the ozonation reaction for the decolorization and mineralization of melanoidin from aqueous solution. The structural properties of CoFe2O4 sample were investigated by X-ray diffraction (XRD)...

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Bibliographic Details
Published in:Materials research (São Carlos, São Paulo, Brazil) São Paulo, Brazil), 2019-01, Vol.22 (1), p.1
Main Authors: de Oliveira, Jivago Schumacher, Salla, Julia da Silveira, Kuhn, Raquel Cristine, Jahn, Sérgio Luiz, Foletto, Edson Luiz
Format: Article
Language:English
Subjects:
Aqueous solutions
Catalysis
Catalysts
Chemical synthesis
Cobalt ferrites
Decoloring
Fourier transforms
Melanoidin
Mineralization
Ozone
Particle size distribution
Scanning electron microscopy
Spectrum analysis
X-ray diffraction
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Summary:In this work, cobalt ferrite (CoFe2O4) was synthesized by solvothermal route for application as a catalyst in the ozonation reaction for the decolorization and mineralization of melanoidin from aqueous solution. The structural properties of CoFe2O4 sample were investigated by X-ray diffraction (XRD), nitrogen adsorption-desorption isotherms, Fourier-transform infrared spectroscopy (FTIR), particle-size distribution, scanning electron microscopy (SEM) and X-ray dispersive energy spectroscopy (EDS). Single-phase CoFe2O4 particles with a predominantly mesoporous structure containing a high specific surface area were obtained. Results showed that the CoFe2O4-catalyzed ozonation reaction has higher activity for the decolorization and mineralization of melanoidin when compared with the ozonation reaction without the presence of catalyst. Therefore, this material can be very promising for the application in catalytic ozonation systems for the melanoidin removal from liquid effluents.
ISSN:1516-1439
1980-5373
DOI:10.1590/1980-5373-mr-2018-0405