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A COMPARATIVE STUDY CONCERNING THE POSSIBILITIES OF MINIMIZING OF POLUTION HAZARDS BY PHOTOCATALYTIC DEGRADATION OF TEXTILE DYEING WASTEWATER USING TITANIUM DIOXIDE AND ZINC OXIDE CONTAINED TEXTILE NANOCOMPOSITES

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Author(s): Narcisa Vrînceanu | Diana Coman | Ion Neagu

Journal: Annals of the University of Oradea. Fascicle of Textiles, Leatherwork
ISSN 1843-813X

Volume: XII;
Issue: 1;
Start page: 215;
Date: 2011;
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Keywords: Photocatalytic degradation | Titanium dioxide | Zinc oxide | UV light | Wastewater treatment | Textile industry

ABSTRACT
Our research was focused onto photodegradation of a real textile dyeing wastewater taken from a certain textile factory. Photocatalytic degradation was carried out over titanium dioxide and zinc oxide nanopowders contained fibrous substrates, under ultraviolet irradiation. Photodegradation percentage was followed spectrophometrically by the measurements of absorbance at kmax equal to 380 nm. The rate of photodegradation increased linearly with time of irradiation when titanium dioxide or zinc oxide was used. A maximum color removal of 86% was achieved after irradiation time of 2.5 hours when titanium dioxide used and 82% color reduction was observed when zinc oxide used for the same period.
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