Adsorption of organic and inorganic arsenic from aqueous solutions using MgAl-LDH with incorporated nitroprusside.

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dc.contributor.authorBorges, Gabriella Alexandre
dc.contributor.authorFerreira, Gabriel Max Dias
dc.contributor.authorSiqueira, Kisla Prislen Félix
dc.contributor.authorDias, Anderson
dc.contributor.authorNajera Navarro, Keirom Osmany
dc.contributor.authorSilva, Sílvia Juliana Barros e
dc.contributor.authorRodrigues, Guilherme Dias
dc.contributor.authorMageste, Aparecida Barbosa
dc.date.accessioned2021-12-13T21:22:22Z
dc.date.available2021-12-13T21:22:22Z
dc.date.issued2020pt_BR
dc.description.abstractAn evaluation was made of the use of MgAl-LDH with incorporated nitroprusside as an adsorbent to remove inorganic arsenic (As(III) and As(V)) and organic arsenic (DMA) from aqueous matrices. The material was synthesized by the co-precipitation method at constant pH and was characterized by Raman spectroscopy, infrared spectroscopy, thermogravimetry, X-ray diffraction, and high-resolution transmission electron microscopy, before and after use in the adsorption process. The effects on adsorption of contact time, initial metalloid concentration, and pH were investigated. For an initial concentration of 10 mg L1 and pH 2.00, the MgAl-LDH with incorporated nitroprusside was only able to adsorb the DMA and As (V) species, with removal percentages of 25.10 and 103.8%, respectively. At pH 6.02 and 12.00, only the inorganic species were adsorbed, with removal percentages of 22.93% and 60.07%, respectively, for As(III), and 89.81% and 71.64%, respectively, for As(V). Application of the Langmuir and Freundlich isotherm models indicated that the features of the adsorption process depended on the pH of the medium and the arsenic species. The results showed that the use of MgAl-LDH with incorporated nitroprusside has potential for the development of techniques for the speciation of arsenic species.pt_BR
dc.identifier.citationBORGES, G. A. et al. Adsorption of organic and inorganic arsenic from aqueous solutions using MgAl-LDH with incorporated nitroprusside. Journal of Colloid and Interface Science, v. 575, p. 194-205, 2020. Disponível em: <https://www.sciencedirect.com/science/article/abs/pii/S0021979720305269>. Acesso em: 10 jun. 2021.pt_BR
dc.identifier.issn0021-9797
dc.identifier.urihttp://www.repositorio.ufop.br/jspui/handle/123456789/14210
dc.identifier.uri2https://www.sciencedirect.com/science/article/abs/pii/S0021979720305269pt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectSpeciationpt_BR
dc.subjectLayered double hydroxidept_BR
dc.subjectX-ray diffractionpt_BR
dc.subjectRaman spectroscopypt_BR
dc.titleAdsorption of organic and inorganic arsenic from aqueous solutions using MgAl-LDH with incorporated nitroprusside.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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