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dc.contributor.authorRodrigues, Cristiane Oliveirapt_BR
dc.contributor.authorRubio, Jorgept_BR
dc.date.accessioned2010-04-16T09:16:49Zpt_BR
dc.date.issued2007pt_BR
dc.identifier.issn1516-1439pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/20828pt_BR
dc.description.abstractThis work presents studies of modification of a natural zeolite by activation with Na+ cations and functionalisation with Ba+2 and/or Cu2+ ions (FZ). The zeolite was characterized, modified and applied in adsorption studies of sulphate and isopropilxanthate ions as flocculated and powdered forms. The reuse of SO4Ba-FZ was investigated by adsorption-removal of either Ba2+ or sulphate ions in stages. Equilibrium data showed that the FZ, flocculated or as powder, provide considerable removal of sulphate ions (qmLangmuir: 1.15 and 1.35 meq.g–1, respectively) and isopropilxanthate (qmLangmuir: 0.35 and 0.93 meq.g-1, respectively). The reuse of the SO4-FZ, either powdered or flocculated also uptake significant amount of Ba2+ or sulphate ions (qmLangmuir: 1.15 meq.g–1), providing a new alternative for the exhausted adsorbent. Thus the activated and functionalised zeolites create new options on the materials engineering area with applications in environmental applied adsorption processes.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMaterials research: ibero-american journal of materials. São Carlos, SP. vol. 10, no. 4 (Dec. 2007), p. 407-412pt_BR
dc.rightsOpen Accessen
dc.subjectAdsorçãopt_BR
dc.subjectNatural zeolitesen
dc.subjectModified materialsen
dc.subjectTratamento de minériospt_BR
dc.subjectAdsorptionen
dc.titleAdsorption of ions onto treated natural zeolitept_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000717093pt_BR
dc.type.originNacionalpt_BR


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