[article]
| Titre : |
The sonochemical decolorisation of textile azo dye CI Reactive Orange 127 |
| Type de document : |
texte imprimé |
| Auteurs : |
Celalettin Özdemir, Auteur ; Muhammed K. Öden, Auteur ; Serkan Sahinkaya, Auteur ; Dünyamin Güçlü, Auteur |
| Année de publication : |
2011 |
| Article en page(s) : |
p. 268-273 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Alcool polyvinylique
Colorants -- Oxydation
Colorants azoïques
Colorants réactifs
Décoloration
Eaux usées -- Epuration
Fenton, Réaction de
Fer
Ions métalliques
Peroxyde d'hydrogèneLe peroxyde d'hydrogène (H2O2), communément appelé eau oxygénée ou encore perhydrol (appellation industrielle), est un composé chimique liquide et visqueux, aux puissantes propriétés oxydantes (il est aussi réducteur). C'est donc un agent blanchissant efficace qui sert de désinfectant et (à haute concentration) d'oxydant ou monergol dans les fusées spatiales.
Sonochimie
Ultrasons
|
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
In the present study, Fenton and sono-Fenton processes were applied to the oxidative decolorisation of synthetic textile wastewater including CI Reactive Orange 127 and polyvinyl alcohol. Process optimisation [pH, ferrous ion (Fe2+) and hydrogen peroxide (H2O2)], kinetic studies and their comparison were carried out for both of the processes. The sono-Fenton process was performed by indirect sonication in an ultrasonic water bath, which was operated at a fixed 35-kHz frequency and 80 W power. The optimum conditions were determined as [Fe2+] = 20 mg l−1, [H2O2] = 15 mg l−1 and pH = 3 for the Fenton process and [Fe2+] = 25 mg l−1, [H2O2] = 5 mg l−1 and pH = 3 for the sono-Fenton process. The colour removals were 89.9% and 91.8% by the Fenton and sono-Fenton processes, respectively. The highest decolorisation was achieved by the sono-Fenton process because of the production of some oxidising agents as a result of sonication. Consequently, ultrasonic irradiation in the sono-Fenton process slightly increased the colour removal to 91.8%, while decreasing the hydrogen peroxide dosage to one-third of that of the Fenton process. |
| Note de contenu : |
EXPERIMENTAL : Materials - Experimental set-up - Sample analysis
RESULTS AND DISCUSSION : Effect of initial pH - Effect of ferrous ion concentration - Effect of hydrogen peroxide concentration - Kinetic studies |
| DOI : |
10.1111/j.1478-4408.2011.00310.x |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11907 |
in COLORATION TECHNOLOGY > Vol. 127, N° 4 (2011) . - p. 268-273
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The sonochemical decolorisation of textile azo dye CI Reactive Orange 127 in COLORATION TECHNOLOGY, Vol. 127, N° 4 (2011)
