Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/4861
Title: Thermodynamics of Pb2+ and Ni2+ adsorption onto natural bentonite from aqueous solutions
Authors: Donat, Ramazan
Akdoğan, Abdullah
Erdem, Emin
Cetisli, H.
Keywords: Natural bentonite
Pb2+ and Ni2+
Sorption isotherm
Adsorption
Adsorption isotherms
Bentonite
Ions
Lead
Nickel
pH effects
Solutions
Contact time
Endothermic reactions
Metal ions
Sorbent materials
Thermodynamics
bentonite
lead
metal
nickel
water
aqueous solution
article
chemical reaction
concentration (parameters)
isotherm
particle size
priority journal
temperature
temperature dependence
thermodynamics
time
adsorption
binding competition
chemistry
pH
solution and solubility
Binding, Competitive
Hydrogen-Ion Concentration
Particle Size
Water
Publisher: Academic Press Inc.
Abstract: Removal of Pb2+ and Ni2+ from aqueous solutions by sorption onto natural bentonite was investigated. Experiments were carried out as a function of particle size, the amount of bentonite, pH, concentration of metals, contact time, and temperature. The adsorption patterns of metal ions onto followed the Langmuir, Freundlich, and Dubinin-Radushkevich isotherms. This included adsorption isotherms of single-metal solutions at 303 K by batch experiments. The thermodynamic parameters (?H,?S,?G) for Pb2+ and Ni2+ sorption onto bentonite were also determined from the temperature dependence. The adsorptions were endothermic reactions. The results suggested that natural bentonite is suitable as a sorbent material for recovery and adsorption of metal ions from aqueous solutions. © 2005 Elsevier Inc. All rights reserved.
URI: https://hdl.handle.net/11499/4861
https://doi.org/10.1016/j.jcis.2005.01.045
ISSN: 0021-9797
Appears in Collections:Fen-Edebiyat Fakültesi Koleksiyonu
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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