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Synthesis, Characterization, and Evaluation of a Ferromagnetically Modified Natural Zeolite Composite for Removal Of Cs+ And Sr2+

Published online by Cambridge University Press:  01 January 2024

Hossein Faghihian ,
Mohammad Moayed ,
Alireza Firooz  and
Mozhgan Iravani
Hossein Faghihian*
Affiliation:
Department of Chemistry, University of Isfahan, 81746-73441, Isfahan, Iran
Mohammad Moayed
Affiliation:
Department of Chemistry, University of Isfahan, 81746-73441, Isfahan, Iran
Alireza Firooz
Affiliation:
Department of Chemistry, University of Isfahan, 81746-73441, Isfahan, Iran
Mozhgan Iravani
Affiliation:
Department of Chemistry, University of Isfahan, 81746-73441, Isfahan, Iran Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, Isfahan, Iran
*
*E-mail address of corresponding author: h.faghih@sci.ui.ac.ir
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Abstract

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The high fission yield and long half life of cesium and strontium make them the two most high-risk products from nuclear fission, so their separation from radioactive wastes is an important step in mitigating their harmful effects. Clinoptilolite, because of its thermal stability, high radiation resistance, and selectivity, was considered as the adsorbent for this purpose. In order to then separate the adsorbent-adsorbate complex from aqueous solution, the clinoptilolite was prepared as a magnetized composite with nanomagnetite. This magnetically modified zeolite enabled the efficient and quick separation of the adsorbent from solution using magnetic separation. The ability of this composite to remove Cs+ and Sr2+ from aqueous solutions was assessed and characterized using X-ray diffraction, X-ray fluorescence, Fourier-transform infrared spectroscopy, differential thermogravimetric analysis, and vibrating-sample magnetometry. Variables such as initial ion concentration, pH, contact time, and temperature in the sorption process were studied and optimized. The maximum adsorption capacities of the composite were 188.7 and 36.63 mg g-1 for Cs+ and Sr2+, respectively. Investigation of the kinetics revealed that the adsorption process onto the composite was quicker than in the case of the zeolite alone. The equilibrium data were analyzed using the Langmuir, Freundlich, and Dubinin-Radushkevich (D-R) isotherm models. The mean free energy of sorption (E) for both ions was in the range 8–16 kJ mol-1, confirming that an ion-exchange mechanism had occurred. Positive ΔH° and negative ΔG° values were indicative of the endothermic and spontaneous nature of the removal of Cs+ and Sr2+. The saturation magnetization of the composite was measured (17.46 Am2/kg), implying fast magnetic separation of the sample after adsorption. The results obtained revealed that the natural Iranian zeolite nanomagnetite composite was a good ion exchanger in the removal of Cs+ and Sr2+.

Keywords

CesiumClinoptiloliteCompositeNanomagnetiteNatural ZeoliteStrontium
Type
Research Article
Information
Clays and Clay Minerals , Volume 61 , Issue 3 , June 2013 , pp. 193 - 203
Copyright
Copyright © The Clay Minerals Society 2013

References

Abdel Rahman, R.O. Ibrahim, H.A. Hanafy, M. and Abdel Monem, N.M., 2010 Assessment of synthetic zeolite Na A-X as sorbing barrier for strontium in a radioactive disposal facility Chemical Engineering Journal 157 100–112.CrossRefGoogle Scholar
Archibald, R.M. and Seligson, D., 1957 Standard Methods of Clinical Chemistry New York Academic Press.Google Scholar
Ashtari, P. Wang, K. Yang, X. Huang, S. and Yamini, Y., 2005 Novel separation and preconcentration of trace amounts of copper (II) in water samples based on neocuproine modified magnetic microparticles Analytica Chimica Acta 550 18–23.CrossRefGoogle Scholar
Bachir, C. Lan, Y. Mereacre, V. Powell, A.K. Bender Koch, C. and Weidler, P.G., 2009 Magnetic titanium-pillared clay (Ti-M-PILC): Magnetic studies and Mössbauer spectroscopy Clays and Clay Minerals 57 433–443.CrossRefGoogle Scholar
Balarama Krishna, M.V. Rao, S.V. Arunachalam, J. Murali, M.S. Kumar, S. and Manchanda, V.K., 2004 Removal of 137Cs and 90Sr from actual low level radioactive waste solutions using moss as a phyto-sorbent Separation and Purification Technology 38 149–161.CrossRefGoogle Scholar
Bekkum, H.V. Flanigen, E.M. and Janson, J.C., 2001 Introduction to Zeolite Science and Practice Amsterdam Elsevier.Google Scholar
Borai, E.H. Harjula, R. Malinen, L. and Paajanen, A., 2009 Efficient removal of cesium from low-level radioactive liquid waste using natural and impregnated zeolite minerals Journal of Hazardous Materials 172 416–422.CrossRefGoogle ScholarPubMed
Bourlinos, A.B. Zboril, R. and Petridis, D., 2003 A simple route towards magnetically modified zeolites Microporous and Mesoporous Materials 58 155–162.CrossRefGoogle Scholar
Breck, D.W., 1974 Zeolite Molecular Sieves, Structure, Chemistry and Uses New York Wiley.Google Scholar
El-Naggar, M.R. El-Kamash, A.M. El-Dessouky, M.I. and Ghonaim, A.K., 2008 Two-step method for preparation of NaA-X zeolite blend from fly ash for removal of cesium ions Journal of Hazardous Materials 154 963–972.CrossRefGoogle ScholarPubMed
Faghihian, H. and Kabiri-Tadi, M., 2010 Removal of zirconium from aqueous solution by modified clinoptilolite Journal of Hazardous Materials 178 66–73.CrossRefGoogle ScholarPubMed
Ghaemi, A. Torab-Mostaedi, M. and Ghannadi-Maragheh, M., 2011 Characterizations of strontium(II) and barium(II) adsorption from aqueous solutions using dolomite powder Journal of Hazardous Materials 190 916–921.CrossRefGoogle ScholarPubMed
Gutierrez, M. Escudey, M. Escrig, J. Denardin, J. Altbir, D. Fabris, J. Cavalcante, L. and García-González, M.T., 2010 Preparation and characterization of magnetic composites based on a natural zeolite Clays and Clay Minerals 58 585–595.CrossRefGoogle Scholar
Helfferich, F., 1962 Ion exchange New York McGraw Hill.Google Scholar
Kabiri-Tadi, M. and Faghihian, H., 2011 Removal of ruthenium from aqueous solution by clinoptilolite Clays and Clay Minerals 59 34–41.CrossRefGoogle Scholar
Karadag, D. Koc, Y. Turan, M. and Ozturk, M., 2007 A comparative study of linear and non-linear regression analysis for ammonium exchange by clinoptilolite zeolite Journal of Hazardous Materials 144 432–437.CrossRefGoogle ScholarPubMed
Klug, H.P. and Alexander, L.E., 1974 X-ray Diffraction Procedures: for Polycrystalline and Amorphous Materials New York John Wiley & Sons.Google Scholar
Ma, B. Oh, S. Shin, W.S. and Choi, S.J., 2011 Removal of Co2+, Sr2+ and Cs+ from aqueous solution by phosphate-modified montmorillonite (PMM) Desalination 276 336–346.CrossRefGoogle Scholar
Maity, D. and Agrawal, D.C., 2007 Synthesis of iron oxide nanoparticles under oxidizing environment and their stabilization in aqueous and non-aqueous media Journal of Magnetism and Magnetic Materials 308 46–55.CrossRefGoogle Scholar
McKay, G. and Ho, Y.S., 1999 Pseudo-second order model for sorption processes Process Biochemistry 34 451–460.Google Scholar
Mohan, D. and Chander, S., 2006 Single, binary and multicomponent sorption of iron and manganese on lignite Journal of Colloid and Interface Science 299 57–76.CrossRefGoogle ScholarPubMed
Nah, I.W. Hwang, K.Y. Jeon, C. and Choi, H.B., 2006 Removal of Pb ion from water by magnetically modified zeolite Minerals Engineering 19 1452–1455.CrossRefGoogle Scholar
Oliveira, L.C.A. Petkowicz, D.I. Smaninotto, A. and Pergher, S.B.C., 2004 Magnetic zeolites: a new adsorbent for removal of metallic contaminants from water Water Research 38 3699–3704.CrossRefGoogle ScholarPubMed
Shakir, K. Sohsah, M. and Soliman, M., 2007 Removal of cesium from aqueous solutions and radioactive waste simulants by coprecipitate flotation Separation and Purification Technology 54 373–381.CrossRefGoogle Scholar
Scheckel, K.G. and Sparks, D.L., 2001 Temperature effects on nickel sorption kinetics at mineral water interface Soil Science Society of America Journal 65 719–728.CrossRefGoogle Scholar
Treacy, M.M.J. and Higgins, J.B., 2007 Collection of Simulated XRD Powder Patterns for Zeolites Amsterdam Elsevier.Google Scholar
Wang, T.H. Li, M.H. Yeh, W.C. Wei, Y.Y. and Teng, S.P., 2008 Removal of cesium ions from aqueous solution by adsorption onto local Taiwan laterite Journal of Hazardous Materials 160 638–642.CrossRefGoogle ScholarPubMed
Wu, P. Daia, Y. Long, H. Zhu, N. Li, P. Wu, J. and Dang, Z., 2012 Characterization of organo-montmorillonites and comparison for Sr(II) removal: equilibrium and kinetic studies Chemical Engineering Journal 191 288–296.CrossRefGoogle Scholar
Zhang, C. Gu, P. Zhao, J. Zhang, D. and Deng, Y., 2009 Research on the treatment of liquid waste containing cesium by an adsorption-microfiltration process with potassium zinc hexacyanoferrate Journal of Hazardous Materials 167 1057–1062.CrossRefGoogle ScholarPubMed