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 evaluated, a...

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Autores principales: Egorin, Andrei, Tokar, Eduard, Kalashnikova, Anastasia, Sokolnitskaya, Tatiana, Tkachenko, Ivan, Matskevich, Anna, Filatov, Evgeny, Zemskova, Larisa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7085098/
https://www.ncbi.nlm.nih.gov/pubmed/32155824
http://dx.doi.org/10.3390/ma13051189
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author Egorin, Andrei
Tokar, Eduard
Kalashnikova, Anastasia
Sokolnitskaya, Tatiana
Tkachenko, Ivan
Matskevich, Anna
Filatov, Evgeny
Zemskova, Larisa
author_facet Egorin, Andrei
Tokar, Eduard
Kalashnikova, Anastasia
Sokolnitskaya, Tatiana
Tkachenko, Ivan
Matskevich, Anna
Filatov, Evgeny
Zemskova, Larisa
author_sort Egorin, Andrei
collection PubMed
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(3).
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spelling pubmed-70850982020-03-23 Synthesis and Sorption Properties towards Sr-90 of Composite Sorbents Based on Magnetite and Hematite Egorin, Andrei Tokar, Eduard Kalashnikova, Anastasia Sokolnitskaya, Tatiana Tkachenko, Ivan Matskevich, Anna Filatov, Evgeny Zemskova, Larisa Materials (Basel) Article 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(3). MDPI 2020-03-06 /pmc/articles/PMC7085098/ /pubmed/32155824 http://dx.doi.org/10.3390/ma13051189 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Egorin, Andrei
Tokar, Eduard
Kalashnikova, Anastasia
Sokolnitskaya, Tatiana
Tkachenko, Ivan
Matskevich, Anna
Filatov, Evgeny
Zemskova, Larisa
Synthesis and Sorption Properties towards Sr-90 of Composite Sorbents Based on Magnetite and Hematite
title 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_short 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
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7085098/
https://www.ncbi.nlm.nih.gov/pubmed/32155824
http://dx.doi.org/10.3390/ma13051189
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