Study of biosorption of rare earth metals (La, Nd, Eu, Gd) by Sargassum sp. biomass in batch systems: Physicochemical evaluation of kinetics and adsorption models

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dc.contributor.authorOliveira, R. C. [UNESP]
dc.contributor.authorGarcia, O. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:24:35Z
dc.date.available2014-05-27T11:24:35Z
dc.date.issued2009-12-28
dc.description.abstractThis work evaluated kinetic and adsorption physicochemical models for the biosorption process of lanthanum, neodymium, europium, and gadolinium by Sargassum sp. in batch systems. The results showed: (a) the pseudo-second order kinetic model was the best approximation for the experimental data with the metal adsorption initial velocity parameter in 0.042-0.055 mmol.g -1.min-1 (La < Nd < Gd < Eu); (b) the Langmuir adsorption model presented adequate correlation with maximum metal uptake at 0.60-0.70 mmol g-1 (Eu < La < Gd < Nd) and the metal-biomass affinity parameter showed distinct values (Gd < Nd < Eu < La: 183.1, 192.5, 678.3, and 837.3 L g-1, respectively); and (c) preliminarily, the kinetics and adsorption evaluation did not reveal a well-defined metal selectivity behavior for the RE biosorption in Sargassum sp., but they indicate a possible partition among RE studied. © (2009) Trans Tech Publications.en
dc.description.affiliationDepartament of Biochemistry and Chemistry Technology Chemistry Institute São Paulo State University (UNESP), Rua Prof. Francisco Degni, s/n, Araraquara
dc.description.affiliationUnespDepartament of Biochemistry and Chemistry Technology Chemistry Institute São Paulo State University (UNESP), Rua Prof. Francisco Degni, s/n, Araraquara
dc.format.extent605-608
dc.identifierhttp://dx.doi.org/10.4028/www.scientific.net/AMR.71-73.605
dc.identifier.citationAdvanced Materials Research, v. 71-73, p. 605-608.
dc.identifier.doi10.4028/www.scientific.net/AMR.71-73.605
dc.identifier.issn1022-6680
dc.identifier.scopus2-s2.0-72449142609
dc.identifier.urihttp://hdl.handle.net/11449/71500
dc.identifier.wosWOS:000273541600136
dc.language.isoeng
dc.relation.ispartofAdvanced Materials Research
dc.relation.ispartofsjr0,121
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectBiosorption
dc.subjectPhysicochemical modeling
dc.subjectRare earth metals
dc.subjectSargassum sp.
dc.subjectAdsorption model
dc.subjectBatch systems
dc.subjectBest approximations
dc.subjectBiosorption process
dc.subjectExperimental data
dc.subjectInitial velocities
dc.subjectLangmuir adsorption model
dc.subjectMetal adsorption
dc.subjectMetal selectivity
dc.subjectMetal uptake
dc.subjectPhysicochemical model
dc.subjectPseudo-second-order kinetic models
dc.subjectSargassum sp
dc.subjectAdsorption
dc.subjectBiomass
dc.subjectEuropium
dc.subjectGadolinium
dc.subjectLanthanum
dc.subjectMetals
dc.subjectNeodymium
dc.subjectRare earths
dc.subjectMetal recovery
dc.titleStudy of biosorption of rare earth metals (La, Nd, Eu, Gd) by Sargassum sp. biomass in batch systems: Physicochemical evaluation of kinetics and adsorption modelsen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://www.scientific.net/AMR
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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