Prediction of Europium Retention in Perovskite: Potential Candidates for an Engineering Barrier in the Disposal of Radioactive Waste

Perovskites, such as tausonite, are crystalline metal oxides with excellent optical and photocatalytic properties and have also been used successfully in the retention of metals, simulating the isotopes of uranium and plutonium. In this work, different pseudo-order and thermodynamic models were stud...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Huemantzin B. Ortiz-Oliveros, Rosa Ma. Flores Espinosa, Pedro Ávila-Pérez, Daniel Cruz-Gonzalez, Noureddine Ouerfelli
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/4224eee26368436e9148a4d04a34b95d
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:4224eee26368436e9148a4d04a34b95d
record_format	dspace
spelling	oai:doaj.org-article:4224eee26368436e9148a4d04a34b95d2021-11-08T02:35:36ZPrediction of Europium Retention in Perovskite: Potential Candidates for an Engineering Barrier in the Disposal of Radioactive Waste2090-907110.1155/2021/3985582https://doaj.org/article/4224eee26368436e9148a4d04a34b95d2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/3985582https://doaj.org/toc/2090-9071Perovskites, such as tausonite, are crystalline metal oxides with excellent optical and photocatalytic properties and have also been used successfully in the retention of metals, simulating the isotopes of uranium and plutonium. In this work, different pseudo-order and thermodynamic models were studied to achieve the prediction of the sorption of Eu3+ (chemical analogous for actinides) in tausonite. The effects of gamma irradiation and temperature on the structural characteristics of the material were determined, as an additional step in the evaluation of material as an engineering barrier in the disposal of radioactive waste. The results obtained show that the tausonite is resistant to the gamma irradiation and thermal energy. Likewise, it was possible to determine that europium sorption occurs through an exothermic and spontaneous reaction, as well as through the formation of surface complexes, where Eu3+ ions bind to sites on the tausonite by dipole-dipole interaction. Furthermore, it was shown that the sorption mechanism is influenced by diffusive phenomena, which participate in the formation of surface complexes. Additionally, a new sorption model with respect to pH was proposed, which allowed determining the physical parameter π. The evidence obtained suggests that π is a physical parameter that relates pH to an optimal value and could explain the equilibrium between the surface complexes that tausonite forms with europium. Likewise, the evidence suggests that 50 kg of tausonite would have the capacity to retain at least 26.59 g of alpha-emitting radionuclides, equivalent to a waste package (900 kg) with a maximum activity of 4000 Bq/g.Huemantzin B. Ortiz-OliverosRosa Ma. Flores EspinosaPedro Ávila-PérezDaniel Cruz-GonzalezNoureddine OuerfelliHindawi LimitedarticleChemistryQD1-999ENJournal of Chemistry, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemistry QD1-999
spellingShingle	Chemistry QD1-999 Huemantzin B. Ortiz-Oliveros Rosa Ma. Flores Espinosa Pedro Ávila-Pérez Daniel Cruz-Gonzalez Noureddine Ouerfelli Prediction of Europium Retention in Perovskite: Potential Candidates for an Engineering Barrier in the Disposal of Radioactive Waste
description	Perovskites, such as tausonite, are crystalline metal oxides with excellent optical and photocatalytic properties and have also been used successfully in the retention of metals, simulating the isotopes of uranium and plutonium. In this work, different pseudo-order and thermodynamic models were studied to achieve the prediction of the sorption of Eu3+ (chemical analogous for actinides) in tausonite. The effects of gamma irradiation and temperature on the structural characteristics of the material were determined, as an additional step in the evaluation of material as an engineering barrier in the disposal of radioactive waste. The results obtained show that the tausonite is resistant to the gamma irradiation and thermal energy. Likewise, it was possible to determine that europium sorption occurs through an exothermic and spontaneous reaction, as well as through the formation of surface complexes, where Eu3+ ions bind to sites on the tausonite by dipole-dipole interaction. Furthermore, it was shown that the sorption mechanism is influenced by diffusive phenomena, which participate in the formation of surface complexes. Additionally, a new sorption model with respect to pH was proposed, which allowed determining the physical parameter π. The evidence obtained suggests that π is a physical parameter that relates pH to an optimal value and could explain the equilibrium between the surface complexes that tausonite forms with europium. Likewise, the evidence suggests that 50 kg of tausonite would have the capacity to retain at least 26.59 g of alpha-emitting radionuclides, equivalent to a waste package (900 kg) with a maximum activity of 4000 Bq/g.
format	article
author	Huemantzin B. Ortiz-Oliveros Rosa Ma. Flores Espinosa Pedro Ávila-Pérez Daniel Cruz-Gonzalez Noureddine Ouerfelli
author_facet	Huemantzin B. Ortiz-Oliveros Rosa Ma. Flores Espinosa Pedro Ávila-Pérez Daniel Cruz-Gonzalez Noureddine Ouerfelli
author_sort	Huemantzin B. Ortiz-Oliveros
title	Prediction of Europium Retention in Perovskite: Potential Candidates for an Engineering Barrier in the Disposal of Radioactive Waste
title_short	Prediction of Europium Retention in Perovskite: Potential Candidates for an Engineering Barrier in the Disposal of Radioactive Waste
title_full	Prediction of Europium Retention in Perovskite: Potential Candidates for an Engineering Barrier in the Disposal of Radioactive Waste
title_fullStr	Prediction of Europium Retention in Perovskite: Potential Candidates for an Engineering Barrier in the Disposal of Radioactive Waste
title_full_unstemmed	Prediction of Europium Retention in Perovskite: Potential Candidates for an Engineering Barrier in the Disposal of Radioactive Waste
title_sort	prediction of europium retention in perovskite: potential candidates for an engineering barrier in the disposal of radioactive waste
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/4224eee26368436e9148a4d04a34b95d
work_keys_str_mv	AT huemantzinbortizoliveros predictionofeuropiumretentioninperovskitepotentialcandidatesforanengineeringbarrierinthedisposalofradioactivewaste AT rosamafloresespinosa predictionofeuropiumretentioninperovskitepotentialcandidatesforanengineeringbarrierinthedisposalofradioactivewaste AT pedroavilaperez predictionofeuropiumretentioninperovskitepotentialcandidatesforanengineeringbarrierinthedisposalofradioactivewaste AT danielcruzgonzalez predictionofeuropiumretentioninperovskitepotentialcandidatesforanengineeringbarrierinthedisposalofradioactivewaste AT noureddineouerfelli predictionofeuropiumretentioninperovskitepotentialcandidatesforanengineeringbarrierinthedisposalofradioactivewaste
_version_	1718443177218670592

Prediction of Europium Retention in Perovskite: Potential Candidates for an Engineering Barrier in the Disposal of Radioactive Waste

Ejemplares similares