Studies of equilibrium and kinetics of adsorption of cesium ions by graphene oxide

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dc.contributor.authorOLIVEIRA, FERNANDO M.
dc.contributor.authorBUENO, VANESSA N.
dc.contributor.authorOSHIRO, MAURICIO T.
dc.contributor.authorPOTIENS JUNIOR, ADEMAR J.
dc.contributor.authorHIROMOTO, GORO
dc.contributor.authorRODRIGUES, DEBORA F.
dc.contributor.authorSAKATA, SOLANGE K.
dc.coverageInternacionalpt_BR
dc.creator.eventoINTERNATIONAL NUCLEAR ATLANTIC CONFERENCEpt_BR
dc.date.accessioned2018-01-09T18:13:36Z
dc.date.available2018-01-09T18:13:36Z
dc.date.eventoOctober 22-27, 2017pt_BR
dc.description.abstractCesium is one of the fission products of major radiological concern, it is often found in nuclear radioactive waste generated at nuclear power plants. Graphene Oxide (GO) has attracted great attention due to its functionalized surface, which includes hydroxyl, epoxy, carbonyl and carboxyl groups, with great capacity of complexation with metal ions and can be used as adsorbent to remove cations from aqueous solutions. In this work, a treatment of radioactive waste containing 137Cs was studied. For the batch experiments of Cs+ removal, 133Cs concentrations remained after the adsorption were determined by Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) and the results obtained were analyzed according to the Langmuir and Freundlich isotherms models. The kinetics of adsorption and Gibbs free energy were also determined. The Langmuir model was the best fit and defined a favorable adsorption. The cesium adsorption process is the pseudo-second model and the Gibbs free energy calculation indicated that the adsorption process is spontaneous.pt_BR
dc.event.siglaINACpt_BR
dc.identifier.citationOLIVEIRA, FERNANDO M.; BUENO, VANESSA N.; OSHIRO, MAURICIO T.; POTIENS JUNIOR, ADEMAR J.; HIROMOTO, GORO; RODRIGUES, DEBORA F.; SAKATA, SOLANGE K. Studies of equilibrium and kinetics of adsorption of cesium ions by graphene oxide. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 22-27, 2017, Belo Horizonte, MG. <b>Proceedings...</b> Rio de Janeiro, RJ: Associação Brasileira de Energia Nuclear, 2017. Disponível em: http://repositorio.ipen.br/handle/123456789/28267.
dc.identifier.orcidhttps://orcid.org/0000-0001-6072-5853
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/28267
dc.localRio de Janeiro, RJpt_BR
dc.local.eventoBelo Horizonte, MGpt_BR
dc.publisherAssociação Brasileira de Energia Nuclearpt_BR
dc.rightsopenAccesspt_BR
dc.subjectadsorption isotherms
dc.subjectaqueous solutions
dc.subjectcesium 137
dc.subjectfree enthalpy
dc.subjectgraphene
dc.subjectlangmuir frequency
dc.subjectliquid wastes
dc.subjectradioactive wastes
dc.titleStudies of equilibrium and kinetics of adsorption of cesium ions by graphene oxidept_BR
dc.typeTexto completo de eventopt_BR
dspace.entity.typePublication
ipen.autorVANESSA NOBRE BUENO
ipen.autorMAURICIO TIOKAZU OSHIRO
ipen.autorGORO HIROMOTO
ipen.autorSOLANGE KAZUMI SAKATA
ipen.autorADEMAR JOSE POTIENS JUNIOR
ipen.autorFERNANDO MENDES DE OLIVEIRA
ipen.codigoautor10299
ipen.codigoautor10884
ipen.codigoautor1285
ipen.codigoautor7038
ipen.codigoautor734
ipen.codigoautor13962
ipen.contributor.ipenauthorVANESSA NOBRE BUENO
ipen.contributor.ipenauthorMAURICIO TIOKAZU OSHIRO
ipen.contributor.ipenauthorGORO HIROMOTO
ipen.contributor.ipenauthorSOLANGE KAZUMI SAKATA
ipen.contributor.ipenauthorADEMAR JOSE POTIENS JUNIOR
ipen.contributor.ipenauthorFERNANDO MENDES DE OLIVEIRA
ipen.date.recebimento18-01pt_BR
ipen.event.datapadronizada2017pt_BR
ipen.identifier.ipendoc24092pt_BR
ipen.notas.internasProceedingspt_BR
ipen.type.genreArtigo
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relation.isAuthorOfPublication7e144a6c-a81d-407b-bda5-134157178030
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relation.isAuthorOfPublication.latestForDiscovery2ac137ac-9d3f-4915-9ca5-30c12fcad0a8
sigepi.autor.atividadeOLIVEIRA, FERNANDO M.:13962:220:Spt_BR
sigepi.autor.atividadeBUENO, VANESSA N.:10299:-1:Npt_BR
sigepi.autor.atividadeOSHIRO, MAURICIO T.:10884:-1:Npt_BR
sigepi.autor.atividadePOTIENS JUNIOR, ADEMAR J.:734:1120:Npt_BR
sigepi.autor.atividadeHIROMOTO, GORO:1285:1120:Npt_BR
sigepi.autor.atividadeSAKATA, SOLANGE K.:7038:220:Npt_BR
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