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

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dc.contributor.authorCaballero Mejia, Bibiana
dc.contributor.authorMoliner, Ana
dc.contributor.authorHontoria Fernández, Chiquinquirá
dc.contributor.authorMariscal Sancho, Ignacio
dc.contributor.authorPérez Esteban, Javier
dc.contributor.authorEscolástico León, Consuelo
dc.contributor.orcidhttps://orcid.org/0000-0002-0090-0741
dc.contributor.orcidhttps://orcid.org/0000-0001-5963-1964
dc.contributor.orcidhttps://orcid.org/0000-0002-8089-0327
dc.contributor.orcidhttps://orcid.org/0000-0003-2344-6710
dc.date.accessioned2025-01-10T12:43:37Z
dc.date.available2025-01-10T12:43:37Z
dc.date.issued2025
dc.descriptionThe registered version of this article, first published in “Journal of Hazardous Materials, 486, 2025", is available online at the publisher's website: Elsevier, https://doi.org/10.1016/j.jhazmat.2024.137081 La versión registrada de este artículo, publicado por primera vez en “Journal of Hazardous Materials, 486, 2025", está disponible en línea en el sitio web del editor: Elsevier, https://doi.org/10.1016/j.jhazmat.2024.137081
dc.description.abstractMagnetite 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.en
dc.description.versionversión publicada
dc.identifier.citationBibiana Caballero-Mejía, Ana Moliner, Consuelo Escolástico, Chiquinquirá Hontoria, Ignacio Mariscal-Sancho, Javier Pérez-Esteban. Use of magnetite nanoparticles and magnetic separation for the removal of metal(loid)s from contaminated mine soils. Journal of Hazardous Materials, 486 (2025), 137081. DOI: 10.1016/j.jhazmat.2024.137081
dc.identifier.doihttps://doi.org/10.1016/j.jhazmat.2024.137081
dc.identifier.issn0304-3894
dc.identifier.urihttps://hdl.handle.net/20.500.14468/25188
dc.journal.titleJournal of Hazardous Materials
dc.journal.volume486
dc.language.isoen
dc.publisherELSEVIER
dc.relation.centerFacultades y escuelas::Facultad de Ciencias
dc.relation.departmentQuímica Orgánica y Bio-Orgánica
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/deed.es
dc.subject24 Ciencias de la Vida::2403 Bioquímica
dc.subject.keywordsmagnetic separationen
dc.subject.keywordsmagnetiteen
dc.subject.keywordsmetalen
dc.subject.keywordsnanoremediationen
dc.subject.keywordspollutionen
dc.titleUse of magnetite nanoparticles and magnetic separation for the removal of metal(loid)s from contaminated mine soilsen
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
relation.isAuthorOfPublication1a275da6-bcd0-4d4b-919d-510933346911
relation.isAuthorOfPublicationec040a6d-fa5f-475b-9f42-6498bc7752da
relation.isAuthorOfPublication.latestForDiscovery1a275da6-bcd0-4d4b-919d-510933346911
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