Layered double hydroxides for remediation of industrial wastewater containing manganese and fluoride.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorTeixeira, Mariana Araujo-
Autor(es): dc.creatorMageste, Aparecida Barbosa-
Autor(es): dc.creatorDias, Anderson-
Autor(es): dc.creatorVirtuoso, Luciano Sindra-
Autor(es): dc.creatorSiqueira, Kisla Prislen Félix-
Data de aceite: dc.date.accessioned2025-08-21T15:39:14Z-
Data de disponibilização: dc.date.available2025-08-21T15:39:14Z-
Data de envio: dc.date.issued2018-05-17-
Data de envio: dc.date.issued2018-05-17-
Data de envio: dc.date.issued2018-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/9949-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0959652617323016-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1020722-
Descrição: dc.descriptionThis work describes an environmentally-friendly procedure for the removal of manganese and fluoride from industrial wastewaters (IW) using layered double hydroxides (LDHs) and calcined layered double oxides (LDOs). Ternary Mg-Mn-Al LDHs (LDH-IW) were produced from IW containing a high concentration of manganese, which decreased from (99.420 ± 3.110) mg L 1 to (0.003 ± 0.001) mg L 1 after the synthesis procedure. Synthetic Mg-Al LDH was also produced for comparison purposes. Both materials were calcined and the resulting oxides (LDO and LDO-IW) were used for the removal of fluoride present in the same IW. The materials were characterized by X-ray diffraction, electron energy-loss spectroscopy, thermal analysis, Raman spectroscopy, and electron microscopy. The kinetics and adsorption isotherms for fluoride removal from aqueous solutions were studied in batch mode. For both LDO and LDO-IW, the adsorption of fluoride followed pseudo-second order reaction kinetics. Langmuir-type adsorption was observed for LDO, while adsorption by LDO-IW was according to the Freundlich model. The results showed that the oxides were able to remove 94% of the fluoride present in the IW at an initial concentration of 162 mg L 1. The procedure reduced the concentrations of the pollutants (manganese and fluoride) to levels that complied with Brazilian effluent standards.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectWastewater-
Palavras-chave: dc.subjectPollutants removal-
Palavras-chave: dc.subjectFluoride-
Palavras-chave: dc.subjectManganese-
Título: dc.titleLayered double hydroxides for remediation of industrial wastewater containing manganese and fluoride.-
Aparece nas coleções:Repositório Institucional - UFOP

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