Adsorption of a textile dye from aqueous solutions by carbon nanotubes

Detalhes bibliográficos
Autor(a) principal: Machado, Fernando Machado
Data de Publicação: 2014
Outros Autores: Bergmann, Carlos Perez, Lima, Éder Cláudio, Adebayo, Matthew Ayorinde, Fagan, Solange Binoto
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/108258
Resumo: Multi-walled and single-walled carbon nanotubes were used as adsorbents for the removal of Reactive Blue 4 textile dye from aqueous solutions. The adsorbents were characterised using Raman spectroscopy, N2 adsorption/desorption isotherms and scanning and transmission electron microscopy. The effects of pH, agitation time and temperature on adsorption capacity were studied. In the acidic pH region, the adsorption of the dye was favourable using both adsorbents. The contact time to obtain equilibrium isotherms at 298-323 K was fixed at 4 hours for both adsorbents. For Reactive Blue 4 dye, Liu isotherm model gave the best fit for the equilibrium data. The maximum sorption capacity for adsorption of the dye occurred at 323 K, attaining values of 502.5 and 567.7 mg g–1 for MWCNT and SWCNT, respectively.
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spelling Machado, Fernando MachadoBergmann, Carlos PerezLima, Éder CláudioAdebayo, Matthew AyorindeFagan, Solange Binoto2014-12-13T02:18:32Z20141516-1439http://hdl.handle.net/10183/108258000935734Multi-walled and single-walled carbon nanotubes were used as adsorbents for the removal of Reactive Blue 4 textile dye from aqueous solutions. The adsorbents were characterised using Raman spectroscopy, N2 adsorption/desorption isotherms and scanning and transmission electron microscopy. The effects of pH, agitation time and temperature on adsorption capacity were studied. In the acidic pH region, the adsorption of the dye was favourable using both adsorbents. The contact time to obtain equilibrium isotherms at 298-323 K was fixed at 4 hours for both adsorbents. For Reactive Blue 4 dye, Liu isotherm model gave the best fit for the equilibrium data. The maximum sorption capacity for adsorption of the dye occurred at 323 K, attaining values of 502.5 and 567.7 mg g–1 for MWCNT and SWCNT, respectively.application/pdfengMaterials research : ibero-american journal of materials. São Carlos, SP. Vol. 17, supl. 1 (Aug. 2014), p. 153-160Engenharia de materiaisNanotubos de carbonoCarbon nanotubesAdsorptionNonlinear isotherm fittingReactive blue 4Isotherm modelsAdsorption of a textile dye from aqueous solutions by carbon nanotubesinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000935734.pdf000935734.pdfTexto completo (inglês)application/pdf1933351http://www.lume.ufrgs.br/bitstream/10183/108258/1/000935734.pdf9db4b33176f16fd9802ba6ce0cc98df6MD51TEXT000935734.pdf.txt000935734.pdf.txtExtracted Texttext/plain32856http://www.lume.ufrgs.br/bitstream/10183/108258/2/000935734.pdf.txt62ae7fe6e1ff07be725e0780b3c9da87MD52THUMBNAIL000935734.pdf.jpg000935734.pdf.jpgGenerated Thumbnailimage/jpeg1883http://www.lume.ufrgs.br/bitstream/10183/108258/3/000935734.pdf.jpge2bbb07fc1dd2761ab3c18c01068b726MD5310183/1082582019-05-16 02:37:24.799658oai:www.lume.ufrgs.br:10183/108258Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2019-05-16T05:37:24Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Adsorption of a textile dye from aqueous solutions by carbon nanotubes
title Adsorption of a textile dye from aqueous solutions by carbon nanotubes
spellingShingle Adsorption of a textile dye from aqueous solutions by carbon nanotubes
Machado, Fernando Machado
Engenharia de materiais
Nanotubos de carbono
Carbon nanotubes
Adsorption
Nonlinear isotherm fitting
Reactive blue 4
Isotherm models
title_short Adsorption of a textile dye from aqueous solutions by carbon nanotubes
title_full Adsorption of a textile dye from aqueous solutions by carbon nanotubes
title_fullStr Adsorption of a textile dye from aqueous solutions by carbon nanotubes
title_full_unstemmed Adsorption of a textile dye from aqueous solutions by carbon nanotubes
title_sort Adsorption of a textile dye from aqueous solutions by carbon nanotubes
author Machado, Fernando Machado
author_facet Machado, Fernando Machado
Bergmann, Carlos Perez
Lima, Éder Cláudio
Adebayo, Matthew Ayorinde
Fagan, Solange Binoto
author_role author
author2 Bergmann, Carlos Perez
Lima, Éder Cláudio
Adebayo, Matthew Ayorinde
Fagan, Solange Binoto
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Machado, Fernando Machado
Bergmann, Carlos Perez
Lima, Éder Cláudio
Adebayo, Matthew Ayorinde
Fagan, Solange Binoto
dc.subject.por.fl_str_mv Engenharia de materiais
Nanotubos de carbono
topic Engenharia de materiais
Nanotubos de carbono
Carbon nanotubes
Adsorption
Nonlinear isotherm fitting
Reactive blue 4
Isotherm models
dc.subject.eng.fl_str_mv Carbon nanotubes
Adsorption
Nonlinear isotherm fitting
Reactive blue 4
Isotherm models
description Multi-walled and single-walled carbon nanotubes were used as adsorbents for the removal of Reactive Blue 4 textile dye from aqueous solutions. The adsorbents were characterised using Raman spectroscopy, N2 adsorption/desorption isotherms and scanning and transmission electron microscopy. The effects of pH, agitation time and temperature on adsorption capacity were studied. In the acidic pH region, the adsorption of the dye was favourable using both adsorbents. The contact time to obtain equilibrium isotherms at 298-323 K was fixed at 4 hours for both adsorbents. For Reactive Blue 4 dye, Liu isotherm model gave the best fit for the equilibrium data. The maximum sorption capacity for adsorption of the dye occurred at 323 K, attaining values of 502.5 and 567.7 mg g–1 for MWCNT and SWCNT, respectively.
publishDate 2014
dc.date.accessioned.fl_str_mv 2014-12-13T02:18:32Z
dc.date.issued.fl_str_mv 2014
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/108258
dc.identifier.issn.pt_BR.fl_str_mv 1516-1439
dc.identifier.nrb.pt_BR.fl_str_mv 000935734
identifier_str_mv 1516-1439
000935734
url http://hdl.handle.net/10183/108258
dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Materials research : ibero-american journal of materials. São Carlos, SP. Vol. 17, supl. 1 (Aug. 2014), p. 153-160
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