Stylianou, MarinosMarinosStylianouInglezakis V.J.Loizidou M.D.Agapiou A.Itskos G.2024-12-192024-12-19201610.1080/19443994.2016.1235153https://kypseli.ouc.ac.cy/handle/11128/8903Bentonite is a clay mineral often used in ion exchange processes due to its high ion exchange capacity. In the present study, a commercially available in Greece market bentonite was obtained and characterized by XRD, XRF, FTIR, BET, and TG/DTA analysis. Monmorillonite was the main component of bentonite sample (>80%). Ion exchange equilibria of Zn2+, Cr3+, and Mn2+ on bentonite was examined by use of batch equilibrium isotherms, distribution coefficients, and maximum exchange levels (MELs) under the same normality for all metals (0.01�N) at 25���2�C. The equilibrium isotherms for the metals studied exhibit a favorable-type isotherm. Selectivity series deduced from equilibrium isotherms are Cr3+�>�Zn2+�>�Mn2+, and the same occurs for MELs. The Langmuir and Freundlich models were applied and fitted the equilibrium data for the metal ion uptake. A detailed literature review on heavy metals-bentonite equilibrium is provided. � 2016 Balaban Desalination Publications. All rights reserved.enArticle