Equilibrium and Thermodynamic Studys of Adsorption of Azo Dyes on The Local Bentonite Clay

Section: Research Paper
Issue
Vol. 28 No. 2 (2019): Volume 28 Issue 2
Published
Jun 1, 2019
Pages
50-70

Abstract

This work is included the synthesizs of two azo dyes from the reaction of p-methoxy aniline and 2-amino benzo thiazol .via diazounium ions.A number of clays are tested as adsorbents for the removal of these dyes from their aqueous solution by adsorption . The most efficied one was selected to peforme this study . The prepared dyes are characterized by some of their physical propertier such as(lmax) , (emax) melting point. Stretch bond of (N=N) group by(IR)spectrometry and colours. The optimal condition of the adsorption systems undre study such as effect of does ,initial concentration ,and temperature wear investigated . Two isotherm models,Langmuir and Freundlich were fitted to the experimental data of adsorption .the thermodynamic Function ( H, G,S) are estimated. The results of the thermodynamic study showed that ,the forces controlling the adsorption process of the systems under considerate are physical in nature . The adsorption process are exothermic , occur spontaneously in the direction of connecting the dye to the clay surface ,and forming less random system.

References

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Authors

Safwan .A.S.Aldbouni .A.S.Aldbouni
Emad. A.S.Alhyali A.S.Alhyali
Ammar .A.H.Alkazraji .A.H.Alkazraji

Identifiers

https://doi.org/10.33899/edusj.2019.161177
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[1]
S. .A.S.Aldbouni .A.S.Aldbouni, صفوان, E. A.S.Alhyali A.S.Alhyali, عماد, A. .A.H.Alkazraji .A.H.Alkazraji, and عمار, “Equilibrium and Thermodynamic Studys of Adsorption of Azo Dyes on The Local Bentonite Clay”, EDUSJ, vol. 28, no. 2, pp. 50–70, Jun. 2019.