Adsorption of Promethazine hydrochloride with KSF Montmorillonite |
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Authors: | Yolda? Seki Kadir Yurdakoç |
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Institution: | (1) Faculty of Arts & Sciences, Department of Chemistry, Dokuz Eylül University, 35160 Buca, İzmir-Turkey |
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Abstract: | Adsorption of Promethazine hydrochloride (PHCl) onto KSF Montmorillonite from aqueous solution has been investigated. Experiments
were conducted at various pH values, ionic backgrounds and solution temperatures. The pseudo-second-order equation successfully
predicted the adsorption among the tried kinetics models (pseudo-first-order, pseudo-second-order and intraparticle diffusion).
Langmuir, Freundlich and DR adsorption models were used to describe equilibrium isotherms and the isotherm constants were
obtained. The increase in solution temperature caused a decrease in the adsorption capacity values found from Freundlich and
DR isotherm. The adsorption type can be explained by combined ion exchange and physisorption. Thermodynamic parameters of
adsorption of Promethazine hydrochloride (PHCl) onto KSF were also evaluated. The surface morphologies of KSF and PHCl loaded
KSF were examined using a scanning electron microscope (SEM). FTIR measurements of samples were also conducted. |
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Keywords: | KSF drug kinetic thermodynamic parameters |
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