Fast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation

The exploration and rational design of easily separable and highly efficient sorbents with satisfactory capability of extracting radioactive uranium (U)-containing compound(s) are of paramount significance. In this study, a novel magnetic hydroxyapatite (HAP) composite (HAP@ CoFe<sub>2</sub...

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Autores principales:	Tao Ou, Hairong Peng, Minhua Su, Qingpu Shi, Jinfeng Tang, Nan Chen, Diyun Chen
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cobalt ferrite adsorption hydroxyapatite mineralization uranium(VI) Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/c4d95a81f800450cae6924a88867ebeb
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spelling	oai:doaj.org-article:c4d95a81f800450cae6924a88867ebeb2021-11-25T18:50:30ZFast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation10.3390/pr91119272227-9717https://doaj.org/article/c4d95a81f800450cae6924a88867ebeb2021-10-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/1927https://doaj.org/toc/2227-9717The exploration and rational design of easily separable and highly efficient sorbents with satisfactory capability of extracting radioactive uranium (U)-containing compound(s) are of paramount significance. In this study, a novel magnetic hydroxyapatite (HAP) composite (HAP@ CoFe<sub>2</sub>O<sub>4</sub>), which was coupled with cobalt ferrite (CoFe<sub>2</sub>O<sub>4</sub>), was rationally designed for uranium(VI) removal through a facile hydrothermal process. The U(VI) ions were rapidly removed using HAP@ CoFe<sub>2</sub>O<sub>4</sub> within a short time (i.e., 10 min), and a maximum U(VI) removal efficiency of 93.7% was achieved. The maximum adsorption capacity (Q<sub>max</sub>) of the HAP@CoFe<sub>2</sub>O<sub>4</sub> was 338 mg/g, which demonstrated the potential of as-prepared HAP@CoFe<sub>2</sub>O<sub>4</sub> in the purification of U(VI) ions from nuclear effluents. Autunite [Ca(UO<sub>2</sub>)<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>(H<sub>2</sub>O)<sub>6</sub>] was the main crystalline phase to retain uranium, wherein U(VI) was effectively extracted and immobilized in terms of a relatively stable mineral. Furthermore, the reacted HAP@CoFe<sub>2</sub>O<sub>4</sub> can be magnetically recycled. The results of this study reveal that the suggested process using HAP@CoFe<sub>2</sub>O<sub>4</sub> is a promising approach for the removal and immobilization of U(VI) released from nuclear effluents.Tao OuHairong PengMinhua SuQingpu ShiJinfeng TangNan ChenDiyun ChenMDPI AGarticlecobalt ferriteadsorptionhydroxyapatitemineralizationuranium(VI)Chemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 1927, p 1927 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cobalt ferrite adsorption hydroxyapatite mineralization uranium(VI) Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	cobalt ferrite adsorption hydroxyapatite mineralization uranium(VI) Chemical technology TP1-1185 Chemistry QD1-999 Tao Ou Hairong Peng Minhua Su Qingpu Shi Jinfeng Tang Nan Chen Diyun Chen Fast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation
description	The exploration and rational design of easily separable and highly efficient sorbents with satisfactory capability of extracting radioactive uranium (U)-containing compound(s) are of paramount significance. In this study, a novel magnetic hydroxyapatite (HAP) composite (HAP@ CoFe<sub>2</sub>O<sub>4</sub>), which was coupled with cobalt ferrite (CoFe<sub>2</sub>O<sub>4</sub>), was rationally designed for uranium(VI) removal through a facile hydrothermal process. The U(VI) ions were rapidly removed using HAP@ CoFe<sub>2</sub>O<sub>4</sub> within a short time (i.e., 10 min), and a maximum U(VI) removal efficiency of 93.7% was achieved. The maximum adsorption capacity (Q<sub>max</sub>) of the HAP@CoFe<sub>2</sub>O<sub>4</sub> was 338 mg/g, which demonstrated the potential of as-prepared HAP@CoFe<sub>2</sub>O<sub>4</sub> in the purification of U(VI) ions from nuclear effluents. Autunite [Ca(UO<sub>2</sub>)<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>(H<sub>2</sub>O)<sub>6</sub>] was the main crystalline phase to retain uranium, wherein U(VI) was effectively extracted and immobilized in terms of a relatively stable mineral. Furthermore, the reacted HAP@CoFe<sub>2</sub>O<sub>4</sub> can be magnetically recycled. The results of this study reveal that the suggested process using HAP@CoFe<sub>2</sub>O<sub>4</sub> is a promising approach for the removal and immobilization of U(VI) released from nuclear effluents.
format	article
author	Tao Ou Hairong Peng Minhua Su Qingpu Shi Jinfeng Tang Nan Chen Diyun Chen
author_facet	Tao Ou Hairong Peng Minhua Su Qingpu Shi Jinfeng Tang Nan Chen Diyun Chen
author_sort	Tao Ou
title	Fast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation
title_short	Fast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation
title_full	Fast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation
title_fullStr	Fast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation
title_full_unstemmed	Fast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation
title_sort	fast and efficient removal of uranium onto a magnetic hydroxyapatite composite: mechanism and process evaluation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c4d95a81f800450cae6924a88867ebeb
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Fast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation

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