Cited by 59Adsorption and biosorption for pollutant removalChemical Synthesis and CharacterizationZeolite Catalysis and Synthesis

Novel kinetic model of the removal of divalent heavy metal ions from aqueous solutions by natural clinoptilolite

Jovanovic, Mina, Rajic, Nevenka, Obradovic, Bojana·2012·Journal of Hazardous Materials

Abstract

Removal of heavy metal ions from aqueous solutions using zeolites is widely described by pseudo-second order kinetics although this model may not be valid under all conditions. In this work, we have extended approaches used for derivation of this model in order to develop a novel kinetic model that is related to the ion exchange mechanism underlying sorption of metal ions in zeolites. The novel model assumed two reversible steps, i.e. release of sodium ions from the zeolite lattice followed by bonding of the metal ion. The model was applied to experimental results of Cu(II) sorption by natural clinoptilolite-rich zeolitic tuff at different initial concentrations and temperatures and then validated by predictions of ion exchange kinetics of other divalent heavy metal ions (i.e. Mn(II), Zn(II) and Pb(II)). Model predictions were in excellent agreements with experimental data for all investigated systems. In regard to the proposed mechanism, modeling results implied that the sodium ion release rate was constant for all investigated metals while the overall rate was mainly determined by the rate of heavy metal ion bonding to the lattice. In addition, prediction capabilities of the novel model were demonstrated requiring one experimentally determined parameter, only.

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Crossref · 10.1016/j.jhazmat.2012.06.052

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  • Higher pH in base treatment can eliminate the crystal structure of zeolite.

    “In addition, the higher pH in the treatment with base can eliminate the crystal structure of zeolite (Jovanovic et al., 2012;Shi et al., 2018).”

    From Adsorption of heavy metals on natural zeolites: A review (2023) · cites this paper as Jovanovic et al., 2012

  • Treatments with bases can dissolve Si in zeolite and decrease the Si/Al ratio against acid treatment.

    “Treatments with bases can dissolve the Si in zeolite and decrease the Si/Al ratio against acid treatment.”

    From Adsorption of heavy metals on natural zeolites: A review (2023) · cites this paper as Jovanovic et al., 2012

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Authors
Jovanovic, M., Rajic, N., & Obradovic, B.
Venue
Journal of Hazardous Materials
Publisher
Elsevier BV
Published
2012-09
Volume
233-234
Pages
57-64
ISSN
0304-3894 (ISSN-L)
OpenAlex
W1978597220
Cited by
59
References
33
Citations by year
2025: 3 · 2024: 3 · 2023: 2 · 2022: 2 · 2021: 8 · 2020: 3 · 2019: 2 · 2018: 4 · 2017: 5 · 2016: 6 · 2015: 9 · 2014: 8 · 2013: 4
FWCI
6.10
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Hazardous Materials (publishedVersion)
  • PubMed (publishedVersion)
  • TechnoRep (University of Belgrade – Faculty of Technology and Metallurgy) (publishedVersion)
Funders
Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja (172-018)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Chemical Synthesis and Characterization
  • Physical Sciences › Chemistry › Inorganic Chemistry › Zeolite Catalysis and Synthesis
Keywords
heavy metal ion removal, clinoptilolite, zeolite ion exchange, sorption kinetics, kinetic modeling, divalent metal ions, copper(II) sorption, sodium ion release, zeolitic tuff, manganese(II), zinc(II), lead(II), pseudo-second-order kinetics, temperature effects
MeSH terms
Adsorption, Ion Exchange, Kinetics, Models, Chemical, Solutions, Water Pollutants, Chemical, Zeolites, Water Purification, Metals, Heavy

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