Synthesis and Sorption Properties towards Sr-90 of Composite Sorbents Based on Magnetite and Hematite

The article describes the synthesis of composite sorbents by immobilizing iron oxide in a polymer matrix with subsequent hydrothermal treatment at a temperature of 175 °C. The sorbents based on magnetite and hematite were synthesized, their magnetic properties and phase composition were eva...

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Main Authors:	Andrei Egorin, Eduard Tokar, Anastasia Kalashnikova, Tatiana Sokolnitskaya, Ivan Tkachenko, Anna Matskevich, Evgeny Filatov, Larisa Zemskova
Format:	Article
Language:	English
Published:	MDPI AG 2020-03-01
Series:	Materials
Subjects:	composite materials polymers iron oxides strontium adsorption ion-exchange
Online Access:	https://www.mdpi.com/1996-1944/13/5/1189

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spelling	doaj-69e0004dd21f489da593ec91bba9899a2020-11-25T02:15:07ZengMDPI AGMaterials1996-19442020-03-01135118910.3390/ma13051189ma13051189Synthesis and Sorption Properties towards Sr-90 of Composite Sorbents Based on Magnetite and HematiteAndrei Egorin0Eduard Tokar1Anastasia Kalashnikova2Tatiana Sokolnitskaya3Ivan Tkachenko4Anna Matskevich5Evgeny Filatov6Larisa Zemskova7Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, prospect 100-letiya Vladivostoka, 159, 690022 Vladivostok, RussiaInstitute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, prospect 100-letiya Vladivostoka, 159, 690022 Vladivostok, RussiaInstitute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, prospect 100-letiya Vladivostoka, 159, 690022 Vladivostok, RussiaInstitute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, prospect 100-letiya Vladivostoka, 159, 690022 Vladivostok, RussiaInstitute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, prospect 100-letiya Vladivostoka, 159, 690022 Vladivostok, RussiaInstitute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, prospect 100-letiya Vladivostoka, 159, 690022 Vladivostok, RussiaInstitute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, prospect 100-letiya Vladivostoka, 159, 690022 Vladivostok, RussiaInstitute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, prospect 100-letiya Vladivostoka, 159, 690022 Vladivostok, RussiaThe article describes the synthesis of composite sorbents by immobilizing iron oxide in a polymer matrix with subsequent hydrothermal treatment at a temperature of 175 °C. The sorbents based on magnetite and hematite were synthesized, their magnetic properties and phase composition were evaluated, and the iron content was determined. Sorption characteristics of the composites towards microconcentrations of Sr-90 radionuclide in solutions with different mineralization and pH were investigated. It was shown that the sorbent based on magnetite was the most efficient. In alkaline media with pH above 11, the composite sorbent based on magnetite exhibited increased selectivity towards Sr-90 and proved to be suitable for application under dynamic sorption conditions with subsequent desorption of the radionuclide with a solution of HNO<sub>3</sub>.https://www.mdpi.com/1996-1944/13/5/1189composite materialspolymersiron oxidesstrontiumadsorptionion-exchange
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Andrei Egorin Eduard Tokar Anastasia Kalashnikova Tatiana Sokolnitskaya Ivan Tkachenko Anna Matskevich Evgeny Filatov Larisa Zemskova
spellingShingle	Andrei Egorin Eduard Tokar Anastasia Kalashnikova Tatiana Sokolnitskaya Ivan Tkachenko Anna Matskevich Evgeny Filatov Larisa Zemskova Synthesis and Sorption Properties towards Sr-90 of Composite Sorbents Based on Magnetite and Hematite Materials composite materials polymers iron oxides strontium adsorption ion-exchange
author_facet	Andrei Egorin Eduard Tokar Anastasia Kalashnikova Tatiana Sokolnitskaya Ivan Tkachenko Anna Matskevich Evgeny Filatov Larisa Zemskova
author_sort	Andrei Egorin
title	Synthesis and Sorption Properties towards Sr-90 of Composite Sorbents Based on Magnetite and Hematite
title_short	Synthesis and Sorption Properties towards Sr-90 of Composite Sorbents Based on Magnetite and Hematite
title_full	Synthesis and Sorption Properties towards Sr-90 of Composite Sorbents Based on Magnetite and Hematite
title_fullStr	Synthesis and Sorption Properties towards Sr-90 of Composite Sorbents Based on Magnetite and Hematite
title_full_unstemmed	Synthesis and Sorption Properties towards Sr-90 of Composite Sorbents Based on Magnetite and Hematite
title_sort	synthesis and sorption properties towards sr-90 of composite sorbents based on magnetite and hematite
publisher	MDPI AG
series	Materials
issn	1996-1944
publishDate	2020-03-01
description	The article describes the synthesis of composite sorbents by immobilizing iron oxide in a polymer matrix with subsequent hydrothermal treatment at a temperature of 175 °C. The sorbents based on magnetite and hematite were synthesized, their magnetic properties and phase composition were evaluated, and the iron content was determined. Sorption characteristics of the composites towards microconcentrations of Sr-90 radionuclide in solutions with different mineralization and pH were investigated. It was shown that the sorbent based on magnetite was the most efficient. In alkaline media with pH above 11, the composite sorbent based on magnetite exhibited increased selectivity towards Sr-90 and proved to be suitable for application under dynamic sorption conditions with subsequent desorption of the radionuclide with a solution of HNO<sub>3</sub>.
topic	composite materials polymers iron oxides strontium adsorption ion-exchange
url	https://www.mdpi.com/1996-1944/13/5/1189
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Synthesis and Sorption Properties towards Sr-90 of Composite Sorbents Based on Magnetite and Hematite

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