International Journal of Advanced Studies in Computer Science and Engineering

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Algerian Bentonite Bridged for removes cationic dye from aqueous solutions by adsorption: Modelling, optimization and kinetics study


Affiliations
1 Physical Chemistry of Materials Laboratory, University of Amar Telidji, Laghouat, Algeria
2 Organic Chemistry and Natural Substances Laboratory, University of Zian Achour, Djelfa, Algeria

This work includes studying the removal of methylthionine chloride on bridged bentonite, and conducting a batch system adsorption test. The influence of various parameters like the dose of adsorbent, pH, contact time and temperature on the behavior of the MC was studied. The pseudo second order kinetic model seems adequate and correlates with the experimental results. The adsorption isotherm fitted well to the Langmuir model with a maximum adsorption capacity adequate to 45.68 mg g−1. The values of the thermodynamic parameters (∆H◦, ∆G◦, and ∆S◦) are negative indicating that the method of MC removal by the bentonite is exothermic, spontaneous, and with increasing order at the solid-solution interface. The results of the FTIR, XRD, SEM and BET characterizations show that this bentonite may be a mixture of Montmorillonite, Kaolinite, Illite, Quartz and Calcite, with a specific surface estimated at 30,3961 m2 g−1.
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  • Algerian Bentonite Bridged for removes cationic dye from aqueous solutions by adsorption: Modelling, optimization and kinetics study

Abstract Views: 213  | 

Authors

Fatima Zohra Batana
Physical Chemistry of Materials Laboratory, University of Amar Telidji, Laghouat, Algeria
Mohamed Nadjib Rebizi
Organic Chemistry and Natural Substances Laboratory, University of Zian Achour, Djelfa, Algeria
Abdenacer Guibadj
Physical Chemistry of Materials Laboratory, University of Amar Telidji, Laghouat, Algeria

Abstract


This work includes studying the removal of methylthionine chloride on bridged bentonite, and conducting a batch system adsorption test. The influence of various parameters like the dose of adsorbent, pH, contact time and temperature on the behavior of the MC was studied. The pseudo second order kinetic model seems adequate and correlates with the experimental results. The adsorption isotherm fitted well to the Langmuir model with a maximum adsorption capacity adequate to 45.68 mg g−1. The values of the thermodynamic parameters (∆H◦, ∆G◦, and ∆S◦) are negative indicating that the method of MC removal by the bentonite is exothermic, spontaneous, and with increasing order at the solid-solution interface. The results of the FTIR, XRD, SEM and BET characterizations show that this bentonite may be a mixture of Montmorillonite, Kaolinite, Illite, Quartz and Calcite, with a specific surface estimated at 30,3961 m2 g−1.