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Ozone: Science & Engineering
The Journal of the International Ozone Association
Volume 37, 2015 - Issue 2
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Original Articles

Bleaching of Knitted Cotton Fabric Applying Ozone

Heiderose Herpich PiccoliUFSC—Federal University of Santa Catarina, Chemical and Food Engineering, Campus Universitário Reitor João David Ferreira Lima, Bairro Trindade, Florianópolis, 88040-900BrazilCorrespondence[email protected]
,
Antônio Augusto Ulson de SouzaUFSC—Federal University of Santa Catarina, Chemical and Food Engineering, Campus Universitário Reitor João David Ferreira Lima, Bairro Trindade, Florianópolis, 88040-900Brazil
&
Selene Maria Arruda Guelli Ulson de SouzaUFSC—Federal University of Santa Catarina, Chemical and Food Engineering, Campus Universitário Reitor João David Ferreira Lima, Bairro Trindade, Florianópolis, 88040-900Brazil
Pages 170-177 | Received 27 Feb 2014, Accepted 10 Jun 2014, Published online: 12 Mar 2015
 
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Abstract

Several samples of knitted cotton fabric in raw state were impregnated with a solution of industrial wetting detergent and treated directly with ozone gas in a closed chamber. Working conditions for the variables: time, pH of the impregnation solution, residual pickup and feed flow rate of oxygen (for ozone generation) were investigated to identify the effects on whiteness degree and fabric strength. The application of ozone proved to be an efficient and promising technology with low water usage.

Notes

1. The oxidation step in bleaching with hydrogen peroxide takes commonly 30 min.

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