Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/6640
Title: Adsorption behaviour of Cu2+ and Cd2+ onto natural bentonite
Authors: Karapınar, Nazan
Donat, Ramazan
Keywords: Adsorption
Heavy metals
Isotherms
Montmorillonite
Natural bentonite
Adsorption behaviour
Adsorption patterns
Aqueous solutions
Batch experiments
Concentration of
Dubinin-Radushkevich
Endothermic reactions
Freundlich
Langmuirs
Metal solutions
Optimized conditions
Shaking time
Sorbent materials
Thermodynamic parameter
Adsorption isotherms
Atmospheric temperature
Bentonite
Clay minerals
Metal ions
Metals
Silicate minerals
Trace analysis
Metal recovery
adsorption
aqueous solution
bentonite
cadmium
copper
enthalpy
experimental study
Gibbs free energy
heavy metal
montmorillonite
recovery
thermodynamics
Abstract: The adsorption behaviour of Cu2+ and Cd2+ onto bentonite was studied as a function of temperature under optimized conditions of amount of adsorbent, particle size, pH, concentration of metals, and shaking time. The adsorption patterns of metal ions onto followed the Langmuir, Freundlich and Dubinin-Radushkevich isotherms. This included adsorption isotherms of single-metal solutions at 298-333 K by batch experiments. The thermodynamic parameters such as variation of enthalpy ?H, variation of entropy ?S and variation of Gibbs free energy ?G were calculated from the slope and intercept of lnKo vs. 1 / T plots. The adsorptions were endothermic reactions. The results suggested that natural bentonite was suitable as sorbent material for the recovery and adsorption of metal ions from aqueous solutions. © 2009 Elsevier B.V. All rights reserved.
URI: https://hdl.handle.net/11499/6640
https://doi.org/10.1016/j.desal.2008.12.046
ISSN: 0011-9164
Appears in Collections:Fen-Edebiyat Fakültesi Koleksiyonu
Mühendislik Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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