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

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dc.creatorMariana Araujo Teixeira
dc.creatorAparecida Barbosa Magestete
dc.creatorAnderson Dias
dc.creatorLuciano Sindra Virtuoso
dc.creatorKisla Prislen Félix Siqueira
dc.date.accessioned2023-11-21T18:09:48Z
dc.date.accessioned2025-09-09T01:26:36Z
dc.date.available2023-11-21T18:09:48Z
dc.date.issued2018
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1016/j.jclepro.2017.10.010
dc.identifier.issn0959-6526
dc.identifier.urihttps://hdl.handle.net/1843/61193
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Cleaner Production
dc.rightsAcesso Restrito
dc.subjectÁguas residuais - Purificação
dc.subjectManganês
dc.subjectFluorose
dc.subjectPoluentes
dc.subjectHidróxidos
dc.subjectRaios X - Difração
dc.subjectAdsorção
dc.subjectEfluente - Qualidade
dc.subject.otherWastewater
dc.subject.otherManganese
dc.subject.otherFluoride
dc.subject.otherPollutants removal
dc.subject.otherLayered double hydroxides
dc.titleLayered double hydroxides for remediation of industrial wastewater containing manganese and fluoride
dc.typeArtigo de periódico
local.citation.epage284
local.citation.spage275
local.citation.volume171
local.description.resumoThis 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.
local.identifier.orcidhttps://orcid.org/0000-0002-6344-3103
local.identifier.orcidhttps://orcid.org/0000-0002-6269-6774
local.identifier.orcidhttps://orcid.org/0000-0001-7413-1087
local.identifier.orcidhttps://orcid.org/0000-0001-9814-1394
local.identifier.orcidhttps://orcid.org/0000-0002-6344-3103
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0959652617323016

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