Hydroxyapatite and Alizarin sulfonate ARS modeling interactions for textile dyes removal from wastewaters

Abstract : Huge amounts of dyes-containing wastewaters are discharged into the environment sometimes without any remediation or land filled as sludges which are difficult to handle and eliminate whatever the method of treatment used. Due to the lack of reliable data on the structural diversity of these harmful compounds, further information is needed about the retention mechanisms especially on synthetic or natural mineral adsorbents like hydroxyapatite HA, a friendly ecological compound commonly found in soils as phosphate rock. We already showed the potential use of hydroxyapatite HA to remove textile dyes from various industrial waste water by coprecipitation with HA which could be thereafter regenerated and reused following repeated dye removal by thermal treatment. As the dihydroxyanthraquinone Alirarin or its salt (ARS) is regarded as a model compound for more complex dyes, this led us to investigate the way calcium ions interact simultaneously with phosphate and ARS. The interaction of ARS with hydroxyapatite (HA) was shown to proceed by formation of whether catecholate salt formation or akin to chelate formation with a phenolic hydroxyl group and adjacent quinone oxygen as already mentioned in the literature. However important details point to a situation more complex than simple adsorption. To clarify the mode of action of HA on the removal of dyes or organic matter in general, we investigated the interactions of alizarinsulfonate ARS with calcium and phosphate ions in solution as a function of pH and dye/adsorbent ratio. The possibility of the formation of mixed complexes of the type phosphate-calcium-dye which reveals the competition for calcium ions between phosphate and organic ligands is emphasized and reported herein. (C) 2014 The Authors. Published by Elsevier Ltd.
Type de document :
Communication dans un congrès
Amalhay, M. SYMPHOS 2013 - 2ND INTERNATIONAL SYMPOSIUM ON INNOVATION AND TECHNOLOGY IN THE PHOSPHATE INDUSTRY, May 2013, Agadir, Morocco. 83, p. 378-385, 2014, Procedia Engineering. 〈http://www.sciencedirect.com/science/article/pii/S1877705814011254#〉. 〈10.1016/j.proeng.2014.09.032〉
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-01611611
Contributeur : Mines Albi Ecole Nationale Supérieure Des Mines d'Albi-Carmaux <>
Soumis le : vendredi 6 octobre 2017 - 10:58:48
Dernière modification le : lundi 16 avril 2018 - 11:06:08

Lien texte intégral

Identifiants

Collections

Citation

W. Lemlikchi, P. Sharrock, M. Fiallo, Ange Nzihou, M. -O. Mecherri. Hydroxyapatite and Alizarin sulfonate ARS modeling interactions for textile dyes removal from wastewaters. Amalhay, M. SYMPHOS 2013 - 2ND INTERNATIONAL SYMPOSIUM ON INNOVATION AND TECHNOLOGY IN THE PHOSPHATE INDUSTRY, May 2013, Agadir, Morocco. 83, p. 378-385, 2014, Procedia Engineering. 〈http://www.sciencedirect.com/science/article/pii/S1877705814011254#〉. 〈10.1016/j.proeng.2014.09.032〉. 〈hal-01611611〉

Partager

Métriques

Consultations de la notice

45