2007•Nonferrous MetalsRequires access

Applications of Isothermal Adsorption Equations to Heavy Metal Ions Adsorption Phenomena

Yijiu Li

Abstract

The adsorption performances of four adsorbents,CAS,DTCS,CTS and DTC-CTS for heavy metals(Cu,Pb,Zn) are investigated,and the selectivity of adsorbents for heavy metal ions is determined by isothermal adsorption equations.The results show that the calculation results by Langmuir-Freundlich isothermal equation are well fitted with the experimental data for the four adsorbents.Associating with the calculated results by Langmuir isothermal equation,the selectivity of adsorbents in the actual process of multi-metal-ion system can be predicted by the Langmuir-Freundlich isothermal equation,therefore much experiment can be saved.

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Key concepts: Isothermal process, Adsorption, Freundlich equation, Langmuir, Metal ions in aqueous solution, Metal, Chemistry, Ion