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This research was supported by the project TED2021-129229B-I00 funded by MCIN/AEI/10.13039/501100011033 and the European Union NextGenerationEU/PRTR.

Analysis of institutional authors

Moliner, AnaAuthorHontoria, ChiquinquiraAuthorMariscal-Sancho, IgnacioAuthorPerez-Esteban, JavierCorresponding Author

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

Publicated to:Journal Of Hazardous Materials. 486 137081- - 2025-03-15 486(), DOI: 10.1016/j.jhazmat.2024.137081

Authors: Caballero-Mejia, Bibiana; Moliner, Ana; Escolastico, Consuelo; Hontoria, Chiquinquira; Mariscal-Sancho, Ignacio; Perez-Esteban, Javier

Affiliations

Univ Nacl Colombia Medellin, Calle 59A 63-20, Medellin 050034, Colombia - Author
Univ Nacl Educ Distancia UNED, Dept Quim Organ & Bioorgan, Ave Esparta S N, Las Rozas de Madrid 28232, Spain - Author
Univ Politecn Madrid, Dept Prod Agraria, Ave Puerta de Hierro 2, Madrid 28040, Spain - Author

Abstract

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.

Keywords

%moisture'dry' [AdsorptionArsenicArticleCadmiumChromiumComplex formationCompostConcentration (parameter)Contact timeControlled studyCopperDry weightElectric conductivityElectromagnetic methodElectromagnetismFe3o4Field capacityFourier transform infrared spectroscopyHeavy metalHeavy metal removalHeavy-metalsImmobilisationImmobilizationIronLeadLimit of detectionMagnetic fieldMagnetic nanoparticlesMagnetic propertyMagnetic separationMagnetiteMagnetite nanoparticleMagnetite nanoparticlesManganeseManganese removal (water treatment)MetalMetal(loid)sMetalloidMine soilsMiningNanoparticleNanoremediationNanotechnologyNickelOptimal conditionsPollutioPollutionRemediationRemoval of metalsSoil moistureSoil pollutionSoil remediationSoil sampleSurface areaWateWater pollutionZero-valent ironZeta potentialZinc

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Journal Of Hazardous Materials due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2025, it was in position 4/81, thus managing to position itself as a Q1 (Primer Cuartil), in the category Engineering, Environmental. Notably, the journal is positioned above the 90th percentile.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-06-15:

  • Scopus: 2

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-06-15:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 26.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 26 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 6.7.
  • The number of mentions on the social network X (formerly Twitter): 11 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Colombia.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Caballero-Mejia, Bibiana) and Last Author (PEREZ ESTEBAN, JAVIER).

the author responsible for correspondence tasks has been PEREZ ESTEBAN, JAVIER.