Removal of fatty acid by natural and modified bentonites: elucidation of adsorption mechanism

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorResende, Ricardo Felipe-
Autor(es): dc.creatorLeal, Paulo Vitor Brandão-
Autor(es): dc.creatorPereira, Douglas Henrique-
Autor(es): dc.creatorPapini, Rísia Magriotis-
Autor(es): dc.creatorMagriotis, Zuy Maria-
Data de aceite: dc.date.accessioned2026-02-09T12:01:15Z-
Data de disponibilização: dc.date.available2026-02-09T12:01:15Z-
Data de envio: dc.date.issued2021-05-11-
Data de envio: dc.date.issued2021-05-11-
Data de envio: dc.date.issued2020-11-19-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/46257-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/abs/pii/S092777572030933X#!-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1152584-
Descrição: dc.descriptionIn contemporary society, water plays an important role, but some developmental activities produce extremely high amounts of effluents. A good example is the mining industry, wherein water is critical in practically all mineral processing processes. The aim of the present study was to compare the efficiency of natural and treated bentonites as adsorbents to remove fatty acid collectors, a wastewater from of phosphate minerals flotation process. Computational chemistry tools were used to elucidate the adsorption mechanisms. Two types of natural bentonite, NB and NB2, and NB bentonite modified with the surfactant CTAB (hexadecyltrimethylammonium bromide) were studied. The bentonites were characterized by infrared spectroscopy, X-ray diffraction, X-ray fluorescence, N2 adsorption/desorption and zeta potential analysis. The characterization of this material revealed properties favorable to adsorption. NB2 showed the highest yield in collector removal. Modified material was found to be more efficient in adsorption than the starting material. Theoretical studies were performed using computational chemistry tools, and the results showed that CTAB inserted on the NB surface served as an adsorption site for the collector, promoting intermolecular interactions between adsorbate and adsorbent.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceColloids and Surfaces A: Physicochemical and Engineering Aspects-
Palavras-chave: dc.subjectAdsorption mechanism-
Palavras-chave: dc.subjectWastewater treatment-
Palavras-chave: dc.subjectOrganophilization-
Palavras-chave: dc.subjectAnionic collectors-
Palavras-chave: dc.subjectMining effluent-
Palavras-chave: dc.subjectMecanismo de adsorção-
Palavras-chave: dc.subjectTratamento de água poluída-
Palavras-chave: dc.subjectOrganofilização-
Palavras-chave: dc.subjectColecionadores aniônicos-
Palavras-chave: dc.subjectEfluente de mineração-
Título: dc.titleRemoval of fatty acid by natural and modified bentonites: elucidation of adsorption mechanism-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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