Application of Sepiolite-Poly(vinylimidazole) composite for the removal of Cu(II) from aqueous solution: Isotherm and thermodynamics studies

Authors : Ali Kara, Muhsin Kılıç, Nalan TEKİN, Nuray DİNİBÜTÜN, Akif ŞAFAKLI

Pages : 20-33

Doi:10.32571/ijct.341542

View : 88 | Download : 8

Publication Date : 2018-02-16

Article Type : Research Paper

Abstract :For removal of Cuinsert ignore into journalissuearticles values(II); ions from aqueous solution, a novel composite was prepared from 1-vinyl imidazole and sepiolite by the technique of in-situ polymerization. Adsorption of Cuinsert ignore into journalissuearticles values(II); ions from aqueous solution onto Sepiolite-Polyinsert ignore into journalissuearticles values(vinylimidazole); composite has been studied at 277, 298, 318, and 338 K and the experimental data were analyzed using fourteen isotherm models. The determination coefficients insert ignore into journalissuearticles values( R 2 ); were determined for each isotherm analysis. The determination coefficients demonstrated that in general the accuracy of models to fit experimental data improves with the number of parameters. The Langmuir model provided the best fit to the experimental data among the two-parameter isotherms. The Toth model provided the best fit to the data among the three-parameter models. Adsorption isotherm modeling shows that the interaction of Cuinsert ignore into journalissuearticles values(II); with Sepiolite-Polyinsert ignore into journalissuearticles values(vinylimidazole); composite surface is localized to monolayer sorption and adsorption is an endothermic process. Additionally, a dsorption experiments showed that Sepiolite-Polyinsert ignore into journalissuearticles values(vinylimidazole); composite can be used as an effective adsorbent for the removal of Cuinsert ignore into journalissuearticles values(II); ions from aqueous solution.
Keywords : Clay, composite, heavy metal, isotherms, nonlinear methods

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