Use of magnetite nanoparticles and magnetic separation for the removal of metal(loid)s from contaminated mine soils

Magnetite nanoparticles have been successfully used for removal and immobilization of contaminants in water, yet their application in soils combined with in situ magnetic separation remains unexplored. We evaluated the effectiveness and optimal conditions for using magnetite nanoparticles combined w...

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Detalles Bibliográficos
Autores: Caballero Mejia, Bibiana, Moliner, Ana, Hontoria Fernández, Chiquinquirá, Mariscal Sancho, Ignacio, Pérez Esteban, Javier, Escolástico León, Consuelo
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universidad Nacional de Educación a Distancia
Repositorio:e-spacio. Repositorio Institucional de la UNED
Idioma:inglés
OAI Identifier:oai:e-spacio.uned.es:20.500.14468/25188
Acceso en línea:https://hdl.handle.net/20.500.14468/25188
Access Level:acceso abierto
Palabra clave:24 Ciencias de la Vida::2403 Bioquímica
magnetic separation
magnetite
metal
nanoremediation
pollution
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spelling Use of magnetite nanoparticles and magnetic separation for the removal of metal(loid)s from contaminated mine soilsCaballero Mejia, BibianaMoliner, AnaHontoria Fernández, ChiquinquiráMariscal Sancho, IgnacioPérez Esteban, JavierEscolástico León, Consuelo24 Ciencias de la Vida::2403 Bioquímicamagnetic separationmagnetitemetalnanoremediationpollutionMagnetite nanoparticles have been successfully used for removal and immobilization of contaminants in water, yet their application in soils combined with in situ magnetic separation remains unexplored. We evaluated the effectiveness and optimal conditions for using magnetite nanoparticles combined with magnetic separation to remove metal(loid)s from contaminated mine soils. Soil samples were incubated (15, 45 days) with varying doses of magnetite (0, 25, 50 g kg⁻¹) and moisture (dry, field capacity) and separated using electromagnet or permanent magnet. This technique achieved up to 44 % As, 65 % Cd, 60 % Cu, 47 % Fe, 40 % Mn, 65 % Pb, and 62 % Zn removal, leaving minimal residual magnetite in the soil. These high removal efficiencies were attributed to the nanoparticles' magnetic properties, adsorption capacity and ability to form aggregates with soil particles. Optimal conditions were 25 g kg⁻¹ of magnetite incubated for 45 days at field capacity and separated by the electromagnet. Higher doses (50 g kg⁻¹) offered minimal improvement at increased costs. The combined use of magnetite nanoparticles and in situ magnetic separation demonstrated a low-impact and cost-effective method for reducing metal(loid) concentrations to levels that facilitate subsequent soil remediation strategies.ELSEVIERhttps://orcid.org/0000-0002-0090-0741https://orcid.org/0000-0001-5963-1964https://orcid.org/0000-0002-8089-0327https://orcid.org/0000-0003-2344-6710e-Spacio UNED20252025-01-1020252025-01-0120252025-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14468/25188reponame:e-spacio. Repositorio Institucional de la UNEDinstname:Universidad Nacional de Educación a DistanciaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc/4.0/deed.esoai:e-spacio.uned.es:20.500.14468/251882026-06-06T12:38:31Z
dc.title.none.fl_str_mv Use of magnetite nanoparticles and magnetic separation for the removal of metal(loid)s from contaminated mine soils
title Use of magnetite nanoparticles and magnetic separation for the removal of metal(loid)s from contaminated mine soils
spellingShingle Use of magnetite nanoparticles and magnetic separation for the removal of metal(loid)s from contaminated mine soils
Caballero Mejia, Bibiana
24 Ciencias de la Vida::2403 Bioquímica
magnetic separation
magnetite
metal
nanoremediation
pollution
title_short Use of magnetite nanoparticles and magnetic separation for the removal of metal(loid)s from contaminated mine soils
title_full Use of magnetite nanoparticles and magnetic separation for the removal of metal(loid)s from contaminated mine soils
title_fullStr Use of magnetite nanoparticles and magnetic separation for the removal of metal(loid)s from contaminated mine soils
title_full_unstemmed Use of magnetite nanoparticles and magnetic separation for the removal of metal(loid)s from contaminated mine soils
title_sort Use of magnetite nanoparticles and magnetic separation for the removal of metal(loid)s from contaminated mine soils
dc.creator.none.fl_str_mv Caballero Mejia, Bibiana
Moliner, Ana
Hontoria Fernández, Chiquinquirá
Mariscal Sancho, Ignacio
Pérez Esteban, Javier
Escolástico León, Consuelo
author Caballero Mejia, Bibiana
author_facet Caballero Mejia, Bibiana
Moliner, Ana
Hontoria Fernández, Chiquinquirá
Mariscal Sancho, Ignacio
Pérez Esteban, Javier
Escolástico León, Consuelo
author_role author
author2 Moliner, Ana
Hontoria Fernández, Chiquinquirá
Mariscal Sancho, Ignacio
Pérez Esteban, Javier
Escolástico León, Consuelo
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv https://orcid.org/0000-0002-0090-0741
https://orcid.org/0000-0001-5963-1964
https://orcid.org/0000-0002-8089-0327
https://orcid.org/0000-0003-2344-6710
e-Spacio UNED
dc.subject.none.fl_str_mv 24 Ciencias de la Vida::2403 Bioquímica
magnetic separation
magnetite
metal
nanoremediation
pollution
topic 24 Ciencias de la Vida::2403 Bioquímica
magnetic separation
magnetite
metal
nanoremediation
pollution
description Magnetite nanoparticles have been successfully used for removal and immobilization of contaminants in water, yet their application in soils combined with in situ magnetic separation remains unexplored. We evaluated the effectiveness and optimal conditions for using magnetite nanoparticles combined with magnetic separation to remove metal(loid)s from contaminated mine soils. Soil samples were incubated (15, 45 days) with varying doses of magnetite (0, 25, 50 g kg⁻¹) and moisture (dry, field capacity) and separated using electromagnet or permanent magnet. This technique achieved up to 44 % As, 65 % Cd, 60 % Cu, 47 % Fe, 40 % Mn, 65 % Pb, and 62 % Zn removal, leaving minimal residual magnetite in the soil. These high removal efficiencies were attributed to the nanoparticles' magnetic properties, adsorption capacity and ability to form aggregates with soil particles. Optimal conditions were 25 g kg⁻¹ of magnetite incubated for 45 days at field capacity and separated by the electromagnet. Higher doses (50 g kg⁻¹) offered minimal improvement at increased costs. The combined use of magnetite nanoparticles and in situ magnetic separation demonstrated a low-impact and cost-effective method for reducing metal(loid) concentrations to levels that facilitate subsequent soil remediation strategies.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-01-10
2025
2025-01-01
2025
2025-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14468/25188
url https://hdl.handle.net/20.500.14468/25188
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc/4.0/deed.es
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
http://creativecommons.org/licenses/by-nc/4.0/deed.es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv ELSEVIER
publisher.none.fl_str_mv ELSEVIER
dc.source.none.fl_str_mv reponame:e-spacio. Repositorio Institucional de la UNED
instname:Universidad Nacional de Educación a Distancia
instname_str Universidad Nacional de Educación a Distancia
reponame_str e-spacio. Repositorio Institucional de la UNED
collection e-spacio. Repositorio Institucional de la UNED
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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