Bentonite functionalized with magnetite nanoparticles synthesized from mining sludge: a new magnetic material for removing iron and manganese ions from water

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual de Londrina (UEL)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorLima, Andre A. A.-
Autor(es): dc.creatorQuirino, Juliana N.-
Autor(es): dc.creatorCavina, Rafael-
Autor(es): dc.creatorOnishi, Bruno S. D.-
Autor(es): dc.creatorSantos, Maria J.-
Data de aceite: dc.date.accessioned2025-08-21T22:24:30Z-
Data de disponibilização: dc.date.available2025-08-21T22:24:30Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-07-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s11051-023-05745-y-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/307049-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/307049-
Descrição: dc.descriptionAbstract: Magnetite nanoparticles (17.07±1.89 nm) were synthesized from mining sludge (Mag-NPR) by co-precipitation with ammonium hydroxide. Mag-NPR was used in bentonite coating (B-Mag) for removing iron (Fe) and manganese (Mn) ions from water. Mag-NPR and B-Mag were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, nitrogen physisorption, and scanning electron microscopy. Structural similarity of both materials was observed compared to conventional standards from literature. The maximum sorption capacity in B-Mag was 1.43 × (Fe) and 3.30 × (Mn) higher when compared to bentonite, indicating that the synthesized material is effective in removing Fe(II) and Mn(II). The mobilization factors of Fe(II) and Mn(II) were 96.6% and 24.3% for B-Mag and 36.2% and 26.9% for bentonite. Competitive sorption showed maximum Fe(III) and Mn(II) sorption capacities exceeding 4.5 and 2.0 times as much as in the single mode. The new magnetic properties make the B-Mag reusable and easily separated from the aqueous solution, removing color, smell, and turbidity while removing Fe and Mn ions, with remarkable technological potential. Graphical abstract: Iron mining sludge accidentally spilled into the Rio Doce basin - MInas Gerais state - Brazil.[Figure not available: see fulltext.].-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionChemistry Department State University of Londrina, Rod. Celso Garcia Cid -PR445, Parana-
Descrição: dc.descriptionChemistry Department São Paulo State University, Av. Prof. Francisco Degni, 55 - Jardim Quitandinha, São Paulo-
Descrição: dc.descriptionChemistry Department São Paulo State University, Av. Prof. Francisco Degni, 55 - Jardim Quitandinha, São Paulo-
Descrição: dc.descriptionCAPES: 88882.448497/2019-01-
Descrição: dc.descriptionCAPES: 88882.460421/2019-01-
Idioma: dc.languageen-
Relação: dc.relationJournal of Nanoparticle Research-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectHealth and safety effects-
Palavras-chave: dc.subjectMagnetic nanoparticles-
Palavras-chave: dc.subjectMagnetism-
Palavras-chave: dc.subjectMetal removing-
Palavras-chave: dc.subjectMining residue-
Palavras-chave: dc.subjectSorption-
Título: dc.titleBentonite functionalized with magnetite nanoparticles synthesized from mining sludge: a new magnetic material for removing iron and manganese ions from water-
Tipo de arquivo: dc.typelivro digital-
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