Adsorption of Uranium (VI) from Aqueous Solutions by Amino-functionalized Clay Minerals
by
Victoria Tobilko 1,
Larysa Spasonova 1,*
,
Iryna Kovalchuk 1,2,*,
Borys Kornilovych 1 and
Yurij Kholodko 1
Victoria Tobilko 1,
Larysa Spasonova 1,*,
Iryna Kovalchuk 1,2,*,
Borys Kornilovych 1 and
Yurij Kholodko 1
1
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 37 Peremogy Av., 03056 Kyiv, Ukraine
2
Institute for Sorption and Problems of Endoecology, National Academy of Science of Ukraine, 13 General Naumov Str., 03164 Kyiv, Ukraine
*
Authors to whom correspondence should be addressed.
Colloids Interfaces 2019, 3(1), 41; https://doi.org/10.3390/colloids3010041
Received: 22 December 2018 / Revised: 20 March 2019 / Accepted: 22 March 2019 / Published: 23 March 2019
(This article belongs to the Special Issue Selected Papers from XVI Polish–Ukrainian Symposium on Theoretical and Experimental Studies of Interfacial Phenomena and their Technological Applications)
Silylation of clay minerals from Cherkasy deposit (Ukraine) montmorillonite (layer silicate) and palygorskite (fibrous silicate) was performed using organosilane (3-aminopropyl)triethoxysilane (APTES). Solvents with different polarity (ethanol, toluene) were used in synthesis. The structure of modified minerals was characterized by complex of methods (X-ray powder diffraction, Fourier transform infrared spectroscopy, nitrogen adsorption-desorption at −196 °C and thermal analysis). Studies of adsorption characteristics of APTES-modified clay minerals were carried out in relation to uranium (VI). The results indicated that modified montmorillonite and palygorskite were effective materials for water purification from UO22+.
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Keywords:
(3-aminopropyl)triethoxysilane; silylation; clay minerals; adsorption; uranium
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MDPI and ACS Style
Tobilko, V.; Spasonova, L.; Kovalchuk, I.; Kornilovych, B.; Kholodko, Y. Adsorption of Uranium (VI) from Aqueous Solutions by Amino-functionalized Clay Minerals. Colloids Interfaces 2019, 3, 41.
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