Decolorisation of Acid Blue 74 by ultraviolet/H2O2

The photodegradation of Acid blue 74 in aqueous solution employing a H^sub 2^O^sub 2^/ultraviolet system in a photochemical reactor was investigated. The kinetics of decolorization were studied by application of a kinetic model. The results show that the reaction of decolorization followed pseudo-fi...

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Bibliographic Details
Published in:Environmental chemistry letters 2003-11, Vol.1 (3), p.161
Main Authors: Aleboyeh, A, Aleboyeh, H, Moussa, Y
Format: Article
Language:English
Subjects:
Aqueous solutions
Color removal
Discoloration
Dyes
Hydrogen peroxide
Irradiation
Kinetics
Photochemicals
Photodegradation
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Summary:The photodegradation of Acid blue 74 in aqueous solution employing a H^sub 2^O^sub 2^/ultraviolet system in a photochemical reactor was investigated. The kinetics of decolorization were studied by application of a kinetic model. The results show that the reaction of decolorization followed pseudo-first order kinetics. We demonstrate that there is an optimum H^sub 2^O^sub 2^ concentration, at which the rate of the decolorization reaction is maximum. Irradiation at 253.7 nm of the dye solution in the presence of H^sub 2^O^sub 2^ results in complete discoloration after ten minutes of treatment.[PUBLICATION ABSTRACT]
ISSN:1610-3653
1610-3661
DOI:10.1007/s10311-003-0039-2