Study of Methylene Blue Adsorption by Modified Kaolinite by Dimethyl Sulfoxide

Author:

Lellou Salima1,Kadi Samir1,Guemou Laid2,Schott Jacques3,Benhebal Hadj4

Affiliation:

1. Laboratory of Plant Physiology Applied to Above-Soil Culture , Department of Nature and Life Sciences , University of Tiaret BP 78 Zaaroura , Tiaret 14000 , Algeria , phone +213774667389, fax +21323522042

2. Improvement and Enhancement of Local Animal Production Laboratory , Department of Nature and Life Sciences , University Centre Ahmed Ben Yahia Al-wancharissi , Tissemsilt 38000 , Algeria , phone +213794429055, fax +21323522042

3. Geosciences Environment Laboratory Toulouse (GET) , CNRS-IRD-OMP - Toulouse University , 14, Avenue Edouard Belin, 31400 Toulouse , France , phone +330561332647, fax +330561332560

4. Department of Material Sciences , University of Tiaret BP 78 Zaaroura , Tiaret 14000 , Algeria , phone +213778216383, fax +21323522042

Abstract

Abstract Tamazert kaolin was modified with dimethyl sulfoxide (DMSO). The starting material and resulting from the intercalation were characterized by X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy (SEM). Intercalation caused considerable changes in our clay by increasing the basal spacing to 11.22 Å, an intercalation rate of 98 %. The adsorption of methylene blue was studied as a function of pH, contact time, temperature, dye concentrations and adsorbents. Kinetic data have been adequately described by the pseudo-second order and intraparticle scattering model. The adsorption isotherm is in good agreement with the Redlich-Peterson model. A change in thermodynamic values (ΔH°, ΔS° and ΔG°) was observed after intercalation. Adsorption became non-spontaneous exothermic and ordered.

Publisher

Walter de Gruyter GmbH

Subject

Environmental Chemistry,Environmental Engineering

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