| Titre : |
Removal of Erioglaucine (Acid Blue 9) with a new coagulant agent from Acacia mearnsii tannin extract |
| Type de document : |
texte imprimé |
| Auteurs : |
Jesùs Sà nchez Martin, Auteur ; Jesùs Beltrà n-Heredia, Auteur ; Teresa RodrÃguez-Sánchez, Auteur |
| Année de publication : |
2012 |
| Article en page(s) : |
p. 15-20 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Acacia et constituants
Biopolymères
Erioglaucine
Polymérisation
Précipitation (chimie)
Tanins végétaux
Teinture -- Fibres textiles
|
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
A new coagulant obtained through the polymerisation of Acacia mearnsii de Wild. tannin extract has been characterised in the removal of a dangerous dye pollutant: Erioglaucine (also called Acid Blue 9 or FD&C Blue 1). This coagulant was laboratory synthesised according to the etherification of tannins using glycidyltrimethylammonium chloride and formaldehyde and its performance in dye removal in terms of efficiency was high. Reasonably low coagulant dosages (ca. 50 mg l−1) reach high capacity levels (approximately 0.7 mg dye mg−1 of coagulant) and pH and temperature are not extremely affecting variables. A design of experiments using response surface methodology led to the evaluation of the influence of parameters such as coagulant dosage and initial dye concentration, and reliable data were collected in order to maximise the removal capacity. The whole coagulant-dye system was successfully modelled by applying the Langmuir hypothesis. Parameters qmax and b were obtained with an adjusted correlation factor (r2) above 0.8. |
| Note de contenu : |
- EXPERIMENTAL : Coagulant syntheses - Buffered solution - Model compounds - General dyes removal trials - Mathematical and statistical procedures
- RESULTS AND DISCUSSION : Preliminary screening on dye removal - Preliminary screening on dye removal - Operative factors - Design of experiments - Theoretical modelling |
| DOI : |
10.1111/j.1478-4408.2011.00342.x |
| En ligne : |
http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00342.x/pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13092 |
in COLORATION TECHNOLOGY > Vol. 128, N° 1 (2012) . - p. 15-20
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