Quantitative Treatment of Magnesium Ion Adsorption at the gamma-Al2O3-Water Interface

dc.creatorZimmermann, LM
dc.creatorSilva, AF
dc.creatorMedeiros, M
dc.creatorBruch, J
dc.creatorSouza, AJ
dc.creatorNome, RA
dc.creatorFiedler, HD
dc.creatorNome, F
dc.date2010
dc.dateSEP 9
dc.date2014-11-19T14:26:13Z
dc.date2015-11-26T18:03:46Z
dc.date2014-11-19T14:26:13Z
dc.date2015-11-26T18:03:46Z
dc.date.accessioned2018-03-29T00:45:45Z
dc.date.available2018-03-29T00:45:45Z
dc.identifierJournal Of Physical Chemistry C. Amer Chemical Soc, v. 114, n. 35, n. 15078, n. 15083, 2010.
dc.identifier1932-7447
dc.identifierWOS:000284520100061
dc.identifier10.1021/jp106094y
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/58655
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/58655
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/58655
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1292648
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionThe adsorption isotherms of Mg2+ on gamma-alumina follow a typical Langmuir model, characteristic of single layer adsorption, and experimental data fitting is successfully described by a two-layer electrostatic model (DLM) on discrete sites on the surface with variable charge as a function of pH. Speciation studies indicate that Mg2+ was the major adsorbed species and the results show how chemical composition and species distribution in clay surfaces couples to solution properties such as pH and ionic strength to regulate adsorption and desorption processes in the distribution of Mg2+ species between sediment and the aqueous phase. Probably the mechanism of adsorption of Mg2+ at the gamma-alumina surface is predominantly electrostatic, with outer sphere complexation, and the Mg2+-saturated gamma-Al2O3 surface efficiently promotes hydrolysis of phosphate diesters.
dc.description114
dc.description35
dc.description15078
dc.description15083
dc.descriptionPRONEX
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFAPESC
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageen
dc.publisherAmer Chemical Soc
dc.publisherWashington
dc.publisherEUA
dc.relationJournal Of Physical Chemistry C
dc.relationJ. Phys. Chem. C
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectWater Interface
dc.subjectPhosphate
dc.subjectSediment
dc.subjectPhases
dc.subjectAnion
dc.titleQuantitative Treatment of Magnesium Ion Adsorption at the gamma-Al2O3-Water Interface
dc.typeArtículos de revistas


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