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

Colloids and Interfaces

Larysa Spasonova¹  Borys Kornilovych¹  Yurij Kholodko¹  Iryna Kovalchuk¹  Victoria Tobilko¹ 

[1] National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 37 Peremogy Av., 03056 Kyiv, Ukraine;

关键词: (3-aminopropyl)triethoxysilane;    silylation;    clay minerals;    adsorption;    uranium;   

DOI  :  10.3390/colloids3010041

来源: DOAJ

【 摘 要 】

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⁺.

【 授权许可】

Unknown