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Composition, structure, and functional properties of organomineral composite sorbents KU-2×8-ZnS and KU-2×8-PbS

  • Sorption and Ion Exchange Processes
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Abstract

Organomineral composite sorbents KU-2×8-ZnS and KU-2×8-PbS were synthesized on the basis of the matrix of a strongly acidic KU-2×8 cation exchanger. Scanning electron microscopy and elemental analysis were used to study their microstructure and chemical composition. With the use of potentiometric titration, their bifunctional nature was revealed and the dissociation constants and the total exchange capacities of the ionogenic groups were determined. The sorption of copper(II), zinc, and cadmium by KU-2×8-ZnS and KU-2×8-PbS sorbents from 0.005 M solutions of their salts was examined. The total dynamic sorption capacity of the composite sorbents for the above metals, found in the study, exceeds similar values for the individual KU-2×8 cation exchanger by a factor of 1.6–2.0 and that in 0.001–0.050 M solutions of potassium and calcium chlorides, by a factor of 1.3–4.5. An explanation is suggested for the sorption process of heavy nonferrous metals on composite sorbents with an active sulfide component by the mechanism of coordination copolymerization.

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Authors and Affiliations

  1. Ural Federal University named after the first President of Russia B.N. Yeltsin, ul. Mira 19, Yekaterinburg, 620002, Russia

    A. E. Bobylev, V. F. Markov & L. N. Maskaeva

  2. Ural Institute of State Fire Service, Russian Ministry for Emergency Situations, ul. Mira 22, Yekaterinburg, 620062, Russia

    V. F. Markov & L. N. Maskaeva

  3. Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, ul. Pervomaiskaya 91, Yekaterinburg, 620990, Russia

    A. Yu. Chufarov

Authors
  1. A. E. Bobylev
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  2. V. F. Markov
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  3. L. N. Maskaeva
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  4. A. Yu. Chufarov
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Corresponding author

Correspondence to A. E. Bobylev.

Additional information

Original Russian Text © A.E. Bobylev, V.F. Markov, L.N. Maskaeva, A.Yu. Chufarov, 2014, published in Zhurnal Prikladnoi Khimii, 2014, Vol. 87, No. 5, pp. 581–588.

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Bobylev, A.E., Markov, V.F., Maskaeva, L.N. et al. Composition, structure, and functional properties of organomineral composite sorbents KU-2×8-ZnS and KU-2×8-PbS. Russ J Appl Chem 87, 572–578 (2014). https://doi.org/10.1134/S1070427214050061

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  • DOI: https://doi.org/10.1134/S1070427214050061

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