摘要：In this work, the adsorption ability of the blast furnace slag to adsorb Zn 2+ ions in aqueous solution wasinvestigated. The experimental results are discussed in detail. The adsorption kinetic studies showedthat the adsorption of Zn 2+ ion from aqueous solution by the blast furnace slag better fits to pseudosecond order kinetic model. It implies that the predominant process is chemisorption, which involves asharing of electrons between the adsorbate and the surface of the adsorbent. The adsorptionisotherm studies showed that Langmuir adsorption isotherm model was more suitable for the Zn 2+ ionfrom aqueous solution than the Freundlich adsorption isotherm model. It was also suggested that theadsorption process was homogeneous adsorption. The thermodynamic parameters of G 0 , H 0 andS 0 are -0.04 kJ/mol, 51.35 kJ/mol and 165.42 J . mol -1. K -1 respectively. It implied that the adsorptionprocess is an endothermic reaction and chemical adsorption process.
