2014•Advanced materials researchRequires access

Adsorption of Pb2+, Cu2+ and Cr3+ on Yongnian Bentonite

Shu Ding, Dan Dan Hou, Bo Hui Xu, Yuzhuang Sun

Abstract

The Bentonite from Yongnian is Ca-Bentonite, Montmorillonite Content 52%, Colloidal Value 57ml/15g, Eca2+/CEC 53.60%. the Adsorption Characteristics of Pb2+, Cu2+ and Cr3+ onto Bentonite under Conditions of Constant Temperature and Ph have been Studied. the Results Show that the Adsorption Capacities of Heavy Metal Ions onto Bentonite from Yongnian Follow the Order of Pb2+> Cu2+> Cr3+. it is Found that the Adsorption Process of Bentonite Accords with the Langmuir Isotherm Model. the Maximum Adsorption of 3 Kinds of Metal Ions onto Bentonite is in Order of Cr3+>Cu2+>Pb2+.

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Key concepts: Bentonite, Adsorption, Montmorillonite, Metal, Langmuir adsorption model, Chemistry, Metal ions in aqueous solution, Nuclear chemistry