Abstract
Data on the synthesis and sorption properties of natural calcium aluminosilicates modified by poly-1-vinyl imidazole (PVIm) and poly-4-vinyl pyridine (PVP) are presented. The fullest recovery of nickel (II) ions from low-concentration solutions is observed for PVP-modified aluminosilicates. Adsorption of nickel (II) ions by PVIm-modified aluminosilicates is best described by the Freundlich adsorption model. In the case of PVP-modified aluminosilicates, the Langmuir model is more adequate. The free adsorption energy values indicate that the interaction between nickel (II) ions and modified aluminosilicates is of a chemical nature.
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Original Russian Text © O.I. Pomazkina, E.G. Filatova, O.V. Lebedeva, Yu.N. Pozhidaev, 2018, published in Fizikokhimiya Poverkhnosti i Zashchita Materialov, 2018, Vol. 54, No. 4, pp. 393–397.
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Pomazkina, O.I., Filatova, E.G., Lebedeva, O.V. et al. Adsorption of Nickel (II) Ions by Aluminosilicates Modified by Poly-1-Vinyl Imidazole and Poly-4-Vinyl Pyridine. Prot Met Phys Chem Surf 54, 582–586 (2018). https://doi.org/10.1134/S2070205118040135
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DOI: https://doi.org/10.1134/S2070205118040135