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Adsorption of Uranium (VI) from Aqueous Solutions by Amino-functionalized Clay Minerals

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
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+. View Full-Text
Keywords: (3-aminopropyl)triethoxysilane; silylation; clay minerals; adsorption; uranium (3-aminopropyl)triethoxysilane; silylation; clay minerals; adsorption; uranium
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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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