Abstract
The mechanism of montmorillonite modification with sodium metasilicate for inversing its ion-exchange characteristics has been studied. The blockage of the interlayer space in montmorillonite by amorphous silicon–oxygen clusters, which are formed as a result of sodium metasilicate hydrolysis, hinders the access of ions to the internal negatively charged surface of the mineral and increases the strength of bonding between aluminosilicate layers. As a result, adsorption becomes possible only on the outer surface of particles, namely, on active silanol and aluminol groups. This fact has been confirmed by the high rate of the process, as well as by the appearance of the ability to adsorb anions only after the reversal of montmorillonite surface charge. The value of the adsorption of Cr(VI) oxoanions by modified montmorillonite has appeared to be 0.26–1.05 mg/g depending on the synthesis conditions of the samples.
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REFERENCES
Schoonheydt, R.A. and Johnston, C.T., in Handbook of Clay Science, Vol. 1, Bergaya, F., Theng, B.K.G., and Lagaly, G., Eds., Elsevier, France, 2006.
Ijagbemi, C.O. and Dong-Su, K., Environ. Eng. Res., 2009, vol. 14, no. 1, p. 26.
Ihaddadene, B., Sehkri, L., Tifouti, L., Al-Dujaili, A.H., and Gherraf, N., J. ChemTech Res., 2016, vol. 9, p. 667.
Gu, S., Kang, X., Wang, L., Lichtfouse, E., and Wang, C., Environ. Chem. Lett., 2019, vol. 17, p. 629.
Lagaly, G., in Handbook of Clay Science, Vol. 1, Bergaya, F., Theng, B.K.G., and Lagaly, G., Eds., Elsevier, France, 2006.
Fil, B.A., Özmetin, C., and Korkmaz, M., Bulg. Chem. Commun., 2014, vol. 46, p. 258.
Lin, S.-H. and Juang, R.-S., J. Hazard. Mater., 2002, vol. 92, p. 315.
Kon'kova, T.V., Rysev, A.P., and Mishchenko, E.V., Perspekt. Mater. (in press).
Sarkar, B., Xi, Y., Megharaj, M., Krishnamurti, G.S.R., Rajarathnam, D., and Naidu, R., J. Hazard. Mater., 2010, vol. 183, p. 87.
Muir, B., Andrunik, D., Hyla, J., and Bajda, T., Appl. Clay Sci., 2017, vol. 136, p. 8.
Atia, A.A., Appl. Clay Sci., 2008, vol. 41, p. 73.
Komarov, V.S. and Besarab, S.V., Adsorbenty i nositeli katalizatorov. Nauchnye osnovy regulirovaniya poristoi struktury (Adsorbents and Catalyst Supports. Scientific Fundamentals of Porous Structure Control), Moscow: INFRA-M, 2018.
Ammann, L., Bergaya, F., and Lagaly, G., Clay Miner., 2005, vol. 40, p. 441.
Plyusnina, I.I., Infrakrasnye spektry mineralov (Infrared Spectra of Minerals), Moscow: Mosk. Gos. Univ., 1977.
Chukanov, N.V., Infrared Spectra of Mineral Species, New York: Springer, 2014.
Temuujin, J., Jadamba, Ts., Burmaa, G., Erdene-chimeg, Sh., Amarsanaa, J., and Mackenzie, K.J.D., Ceram. Int., 2004, vol. 30, p. 251.
ACKNOWLEDGMENTS
We are grateful to the Center for Collective Use of the Mendeleev University of Chemical Technology of Russia for help in the measurement of the IR spectra and the implementation of elemental analysis.
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Translated by A. Muravev
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Kon’kova, T.V., Rysev, A.P. Inversion of Montmorillonite Ion-Exchange Characteristics. Colloid J 82, 130–135 (2020). https://doi.org/10.1134/S1061933X20020064
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DOI: https://doi.org/10.1134/S1061933X20020064