Comparative study of the adsorption of a vat dye on different adsorbents based on an inorganic material Bentonite and clay from the M'sila region.

Étude comparative de l’adsorption d’un colorant de cuve sur différents adsorbants à base d’un matériau inorganique la Bentonite et l’argile de la région de M’sila

Nadir Deghfel (1) , Azzedine Benyahia (2) , Kamel Guerfi (3) , Abdelhamid Errachid (4) , Kamel Belmokre (5)

1 Lab Chim Mat Inorgan
2 Lab Ville Environm Societe & Dev Durable
3 Lab Traitement Eaux & Valorisat Dechets Ind
4 ISA-Micro & Nanobiotechnologies
5 Université 20 Août 1955 Skikda

The present work aims to reduce the impact of vat dyes by a natural and activated Algerian clay using the adsorption technique. The adsorption experiments show that the clay used is very effective in removing the vat dye at relatively low concentrations in an aqueous medium. The adsorption isotherms of the vat dye on the raw clay are satisfactorily described by the Langmuir model. Adsorption capacities in the range of 55.25 mg. g(-1) for crude bentonite (BB), 55.20 mg. g(-1) for sodium bentonite (BS), 51.78 mg. g(-1) for red clay (AR) and 48.24 mg. g(-1) for Madadid clay (AM) were determined from the Langmuir isotherm. These values show that the raw bentonite has a better adsorption capacity because it contains a large percentage of clay fraction.

Mots clés: clay; adsorption; water; vat dye; pollutants

Domaines: Chimie; Matériaux

Nadir Deghfel, Azzedine Benyahia, Kamel Guerfi, Abdelhamid Errachid, Kamel Belmokre. Étude comparative de l’adsorption d’un colorant de cuve sur différents adsorbants à base d’un matériau inorganique la Bentonite et l’argile de la région de M’sila. Matériaux & Techniques, 2018, 105 (4), pp. Article Number: 405 ⟨10.1051/mattech/2018023⟩. ⟨hal-01859133⟩