Sorption of Ce(III) by Silica SBA-15 and Titanosilicate ETS-10 from Aqueous Solution

The adsorption capacity of two sorbents, silica SBA-15 and titanosilicate ETS-10, toward Ce(III) was tested. The obtained sorbents were characterized using X-ray diffraction, nitrogen adsorption-desorption, Scanning electron microscopy, and Fourier-transform infrared spectroscopy. The effects of sol...

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Autores principales:	Inga Zinicovscaia, Nikita Yushin, Doina Humelnicu, Dmitrii Grozdov, Maria Ignat, Stefan Demcak, Ionel Humelnicu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	sorption cerium silica SBA-15 titanosilicate ETS-10 Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/3d33793f2585404fae1caf5149eb9161
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spelling	oai:doaj.org-article:3d33793f2585404fae1caf5149eb91612021-11-25T19:16:07ZSorption of Ce(III) by Silica SBA-15 and Titanosilicate ETS-10 from Aqueous Solution10.3390/w132232632073-4441https://doaj.org/article/3d33793f2585404fae1caf5149eb91612021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/22/3263https://doaj.org/toc/2073-4441The adsorption capacity of two sorbents, silica SBA-15 and titanosilicate ETS-10, toward Ce(III) was tested. The obtained sorbents were characterized using X-ray diffraction, nitrogen adsorption-desorption, Scanning electron microscopy, and Fourier-transform infrared spectroscopy. The effects of solution acidity, cerium concentration, time of contact, and temperature on Ce(III) sorption were investigated. The maximum Ce(III) removal by silica SBA-15 was achieved at pH 3.0 and by titanosilicate ETS-10 at a pH range of 4.0–5.0. The Freundlich, Langmuir, and Temkin isotherm models were applied for the description of equilibrium sorption of Ce(III) by the studied absorbents. Langmuir model obeys the experimentally obtained data for both sorbents with a maximum sorption capacity of 68 and 162 mg/g for silica SBA-15 and titanosilicate ETS-10, respectively. The kinetics of the sorption were described using pseudo-first- and pseudo-second-order kinetics, Elovich, and Weber–Morris intraparticle diffusion models. The adsorption data fit accurately to pseudo-first- and pseudo-second-order kinetic models. Thermodynamic data revealed that the adsorption process was spontaneous and exothermic.Inga ZinicovscaiaNikita YushinDoina HumelnicuDmitrii GrozdovMaria IgnatStefan DemcakIonel HumelnicuMDPI AGarticlesorptionceriumsilica SBA-15titanosilicate ETS-10Hydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 3263, p 3263 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sorption cerium silica SBA-15 titanosilicate ETS-10 Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	sorption cerium silica SBA-15 titanosilicate ETS-10 Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Inga Zinicovscaia Nikita Yushin Doina Humelnicu Dmitrii Grozdov Maria Ignat Stefan Demcak Ionel Humelnicu Sorption of Ce(III) by Silica SBA-15 and Titanosilicate ETS-10 from Aqueous Solution
description	The adsorption capacity of two sorbents, silica SBA-15 and titanosilicate ETS-10, toward Ce(III) was tested. The obtained sorbents were characterized using X-ray diffraction, nitrogen adsorption-desorption, Scanning electron microscopy, and Fourier-transform infrared spectroscopy. The effects of solution acidity, cerium concentration, time of contact, and temperature on Ce(III) sorption were investigated. The maximum Ce(III) removal by silica SBA-15 was achieved at pH 3.0 and by titanosilicate ETS-10 at a pH range of 4.0–5.0. The Freundlich, Langmuir, and Temkin isotherm models were applied for the description of equilibrium sorption of Ce(III) by the studied absorbents. Langmuir model obeys the experimentally obtained data for both sorbents with a maximum sorption capacity of 68 and 162 mg/g for silica SBA-15 and titanosilicate ETS-10, respectively. The kinetics of the sorption were described using pseudo-first- and pseudo-second-order kinetics, Elovich, and Weber–Morris intraparticle diffusion models. The adsorption data fit accurately to pseudo-first- and pseudo-second-order kinetic models. Thermodynamic data revealed that the adsorption process was spontaneous and exothermic.
format	article
author	Inga Zinicovscaia Nikita Yushin Doina Humelnicu Dmitrii Grozdov Maria Ignat Stefan Demcak Ionel Humelnicu
author_facet	Inga Zinicovscaia Nikita Yushin Doina Humelnicu Dmitrii Grozdov Maria Ignat Stefan Demcak Ionel Humelnicu
author_sort	Inga Zinicovscaia
title	Sorption of Ce(III) by Silica SBA-15 and Titanosilicate ETS-10 from Aqueous Solution
title_short	Sorption of Ce(III) by Silica SBA-15 and Titanosilicate ETS-10 from Aqueous Solution
title_full	Sorption of Ce(III) by Silica SBA-15 and Titanosilicate ETS-10 from Aqueous Solution
title_fullStr	Sorption of Ce(III) by Silica SBA-15 and Titanosilicate ETS-10 from Aqueous Solution
title_full_unstemmed	Sorption of Ce(III) by Silica SBA-15 and Titanosilicate ETS-10 from Aqueous Solution
title_sort	sorption of ce(iii) by silica sba-15 and titanosilicate ets-10 from aqueous solution
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/3d33793f2585404fae1caf5149eb9161
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Sorption of Ce(III) by Silica SBA-15 and Titanosilicate ETS-10 from Aqueous Solution

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