Equilibrium and kinetics for the sorption of promethazine hydrochloride onto K10 montmorillonite

Journal of Colloid and Interface Science
Gürhan GereliKadir Yurdakoç

Abstract

This study presents the adsorption of cationic drug, promethazine hydrochloride from aqueous solution onto K10 montmorillonite. The effects of pH and temperature on adsorption process were investigated. Maximum adsorption pH was obtained to be about 7.5. Thermodynamic parameters found in this study depict the exothermic nature of adsorption. The process was favorable and spontaneous. From kinetic studies, it was found that adsorption process obeyed the pseudo-second-order kinetic model. The Langmuir, Freundlich, Dubinin-Radushkevich (DR) models were applied to describe the equilibrium isotherms and the isotherm constants were determined. The fit of the Langmuir and DR models appeared to be good. Physisorption mainly controls the whole adsorption process but chemisorption also shows a particular contribution.

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Citations

Feb 26, 2010·Journal of Colloid and Interface Science·Zhenlu ZhaoShanyi Du
Sep 14, 2007·Journal of Colloid and Interface Science·Eladio A Ferreiro, Silvia G de Bussetti
Oct 1, 2013·International Journal of Pharmaceutics·Ilaria CalabreseMaria Liria Turco Liveri
Nov 20, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Valeria AmbrogiLoredana Latterini
Feb 21, 2019·Environmental Science and Pollution Research International·Hanieh BamdadSadegh Papari
Sep 10, 2008·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Won Sik Shin
Nov 20, 2020·The Science of the Total Environment·Willis GwenziMunyaradzi Mtisi
Aug 11, 2019·Journal of Colloid and Interface Science·Marina MassaroMarco d'Ischia

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