Have a personal or library account? Click to login
Study of Methylene Blue Adsorption by Modified Kaolinite by Dimethyl Sulfoxide Cover

Study of Methylene Blue Adsorption by Modified Kaolinite by Dimethyl Sulfoxide

Open Access
|Jul 2020

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.

DOI: https://doi.org/10.2478/eces-2020-0015 | Journal eISSN: 2084-4549 | Journal ISSN: 1898-6196
Language: English
Page range: 225 - 239
Published on: Jul 17, 2020
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2020 Salima Lellou, Samir Kadi, Laid Guemou, Jacques Schott, Hadj Benhebal, published by Society of Ecological Chemistry and Engineering
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.