Photo oxidative degradation of azure-B by sono-photo-Fenton and photo-Fenton reagents

A model for the decomposition of azure-B by photo-Fenton reagent in the presence of ultrasound in homogeneous aqueous solution has been described. The photochemical decomposition rate of azure-B is markedly increased in the presence of ultrasound. It is a rather inexpensive reagent for wastewater tr...

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Bibliographic Details
Published in:Arabian journal of chemistry 2014-12, Vol.7 (6), p.981-985
Main Authors: Vaishnave, Prahlad, Kumar, Anil, Ameta, Rakshit, Punjabi, P.B., Ameta, Suresh C.
Format: Article
Language:English
Subjects:
Advanced oxidation process
Azure-B
Sono-photo-Fenton reagent
Sono-photochemical bleaching
Ultrasonic irradiation
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Summary:A model for the decomposition of azure-B by photo-Fenton reagent in the presence of ultrasound in homogeneous aqueous solution has been described. The photochemical decomposition rate of azure-B is markedly increased in the presence of ultrasound. It is a rather inexpensive reagent for wastewater treatment. The effect of different variables like the concentration of ferric ion, concentration of dye, hydrogen peroxide, pH, light intensity etc. on the reaction rate has been observed. The progress of the sono-photochemical degradation was monitored spectrophotometrically. The optimum sono-photochemical degradation conditions were experimentally determined. The results showed that the dye was completely oxidized and degraded into CO2 and H2O. A suitable tentative mechanism for sono-photochemical bleaching of azure-B by sono-photo-Fenton’s reaction has been proposed.
ISSN:1878-5352
1878-5379
DOI:10.1016/j.arabjc.2010.12.019