| Titre : |
Decolorisation by Bacillus flexus of exhausted dyebaths containing CI Acid Red 249 and their reuse for wool dyeing |
| Type de document : |
texte imprimé |
| Auteurs : |
Neha D. Parmar, Auteur ; Sanjeev R. Shukla, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 218-222 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Bactéries
Bains de teinture -- Epuration
Bains de teinture -- Recyclage
Colorants acides
Décoloration
Laine
Photostabilité
Résistance au lavage
Solidité de la couleur
Teinture -- Fibres textiles
|
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
A dyebath containing left-over CI Acid Red 249 after dyeing of wool was completely decolorised using an isolated bacteria Bacillus flexus. Optimisation was carried out by varying the pH, temperature, dye concentration, and microbial loading. Complete decolorisation of a 50 mg l?1 dye solution was achieved in 8 h at pH 7 and 37 °C with 10% v/v loading of the bacteria. The decolorised bath was utilised for dyeing of wool fabric with the same dye at 5% shade. This cycle of dyeing–decolorising–dyeing was repeated 5 times. The evaluation of dyed fabric was done using K/S, colour values, and fastness to light and washing. Comparison of a sample dyed with the conventional exhaust process showed that the dyeing quality is not affected for all five successive reuse cycles. The results are important from the viewpoint of reducing water consumption and chemicals. |
| Note de contenu : |
- EXPERIMENTAL : Dyes and chemicals - Mircoorganism and culture conditions - Decolorisation experiment - Determination of TOC and COD - Wool dyeing - Reuse of the decolorised bath - Dye uptake - Measurement of K/S - Evaluation of washing fastness - Evaluation of yellowness index - Evaluation of light fastness
- RESULTS AND DISCUSSION : Optimisationof physicochemicam parameters for AR 249 dye decolorisation - Effect of pH on dyebath decolorisation - Effect of temperature on dyebath decolorisation - Effect of dye concentration on dyebath decolorisation - COD and TOC removal during degradation of AR 249 dye - Colour values for dyeing by repeated used of the decolorised dyebath |
| DOI : |
10.1111/cote.12270 |
| En ligne : |
https://drive.google.com/file/d/1144X26waHSfIs9IgsV9wezIZKoJyHshy/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28646 |
in COLORATION TECHNOLOGY > Vol. 133, N° 3 (06/2017) . - p. 218-222
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Decolorisation by Bacillus flexus of exhausted dyebaths containing CI Acid Red 249 and their reuse for wool dyeing in COLORATION TECHNOLOGY, Vol. 133, N° 3 (06/2017)
