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Degradation of reactive dyes I. A comparative study of ozonation, enzymatic and photochemical processes

Peralta-Zamora, Patricio, Kunz, Airton, de Moraes, Sandra Games, Pelegrini, Ronaldo, de Campos Moleiro, Patricia, Reyes, Juan, Duran, Nelson·1999·Chemosphere
DOI 10.1016/s0045-6535(98)00227-6
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Abstract

The environmental problems associated with textile activities are represented mainly by the extensive use of organic dyes. A great number of these compounds are recalcitrant and shown carcinogenic or mutagenic character. In this work three processes were studied for degradation of an anthraquinone dye (C.I. reactive blue-19). The ozonation process leads to complete decolorization with a very short reaction time; however, effective mineralization of the dye was not observed. The enzymatic process promotes quick decolorization of the dye; nevertheless, maximum decolorization degrees of about 30% are insignificant in relation to the decolorization degree achieved by the other processes. The best results were found for the photocatalytical process. The use of ZnO or TiO2 as photocatalysts, permits total decolorization and mineralization of the dye with reaction times of about 60 min.

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Research works printed but not linked: 24

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Metadata

Authors
Peralta-Zamora, P., Kunz, A., de Moraes, S. G., Pelegrini, R., de Campos Moleiro, P., Reyes, J., & Duran, N.
Venue
Chemosphere
Publisher
Elsevier BV
Published
1999-02
Volume
38
Issue
4
Pages
835-852
ISSN
0045-6535
DOI
10.1016/s0045-6535(98)00227-6
Cited by
121
References
0
Language
en
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)

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