| Titre : |
Investigation of a homogeneous activating ozonation method in the rinsing procedure of cotton fabric dyed with reactive dye |
| Type de document : |
texte imprimé |
| Auteurs : |
Ya-Hong Mao, Auteur ; Yu Guan, Auteur ; Deng-Hong Luo, Auteur ; Qing-Kang Zheng, Auteur ; Xi-Ning Feng, Auteur ; Xiu-Xing Wang, Auteur |
| Année de publication : |
2011 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Colorants -- Oxydation
Colorants réactifs
CotonLe coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles).
Eaux usées -- Epuration
Rinçage
Teinture -- Fibres textiles
Tétra-acétyl-éthylène-diamine
Textiles et tissus
|
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
The textile dyeing process requires the consumption of large quantities of water, which includes huge amounts of coloured wastewater. Usually the rinsing of dyed fabric and the treating of the dyeing house wastewater are separated. The two independent processes not only increase the difficulty of wastewater treatment but also increase the costs of the treatment. In this paper, the ozone/tetraacetylethylenediamine active oxidation technology was employed to rinse dyed fabric and to decolorise the rinsing wastewater simultaneously. The effects of the rinsing conditions on the decolorisation ratio and the chemical oxygen demand Cr value of treated wastewater, and the K/S value, colour difference, tensile strength and fastness of dyed samples were investigated. The results indicated that the decolorisation ratio of the rinsing effluent was greater than 80% and the chemical oxygen demand Cr value decreased more than 58% by the ozone/tetraacetylethylenediamine rinsing process compared with that of traditional rinsing processes. Furthermore, the curve of decolorisation kinetics was in good agreement with a pseudo-first-order kinetic model. In addition, the decolorisation mechanism was also discussed after ultraviolet–visible and ultra performance liquid chromatograph–mass spectrometry analyses of the degraded dye molecule. |
| Note de contenu : |
EXPERIMENTAL : Materials - Ozonation decolorisation experiment - Dyeing procedure - Rinsing process - Measurements of the output quantity and the utilisation of ozone - Measurements of rinsing effluent - Analysis of the decolorisation kinetics - Tests of dyed fabrics - Measurement of liquid and air surface tension - Analysis of degradation products.
RESULTS AND DISCUSSION : Effect of rinsing conditions on the decolorisation ratio of rinsing effluent - Environmental effect of ozone/TAED rinsing effluent - Ozonation decolorisation reaction kinetics - Effect of ozone/TAED rinsing on the dyed fabric - Destruction of the dye molecule during the ozone/TAED rinsing process. |
| DOI : |
10.1111/j.1478-4408.2011.00309.x |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11906 |
in COLORATION TECHNOLOGY > Vol. 127, N° 4 (2011)
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