Brazil nut shells as a new biosorbent to remove methylene blue and indigo carmine from aqueous solutions

Detalhes bibliográficos
Autor(a) principal: Brito, Suzana Modesto de Oliveira
Data de Publicação: 2010
Outros Autores: Andrade, Heloysa Martins Carvalho, Soares, Luciana Frota, Azevedo, Rafael Pires de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/6004
Resumo: Trabalho completo: acesso restrito, p. 84–92
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spelling Brito, Suzana Modesto de OliveiraAndrade, Heloysa Martins CarvalhoSoares, Luciana FrotaAzevedo, Rafael Pires deBrito, Suzana Modesto de OliveiraAndrade, Heloysa Martins CarvalhoSoares, Luciana FrotaAzevedo, Rafael Pires de2012-05-30T20:09:43Z2010-02-150304-3894http://www.repositorio.ufba.br/ri/handle/ri/6004v. 174, n. 1–3Trabalho completo: acesso restrito, p. 84–92The adsorption of methylene blue and indigo carmine, respectively a basic and an acid dye, was studied on raw Brazil nut shells. The dye removal from solution by BNS was governed by: (i) polarization effects between the colored ions and the surface sites, leading to physisorbed species due to weak electrostatic forces and (ii) diffusion limitations affecting the kinetic parameters. Thermodynamic studies showed that the adsorption of methylene blue and of indigo carmine was spontaneous and exothermic occurring with entropy decrease. H0 values confirmed the physical nature of the adsorption processes. The adsorption followed the Langmuir model and pseudo-second order kinetics over the entire range of tested concentrations but the process was controlled by intraparticle diffusion. The maximal uptakes were 7.81 mg g−1, for methylene blue, and 1.09 mg g−1 for indigo carmine, at room temperature. These results indicate that Brazil nut shells may be useful as adsorbent either for basic or acid dyes.Submitted by Bruna Lessa (lessbruna@gmail.com) on 2012-05-30T20:09:43Z No. of bitstreams: 2 (40)1-s2.0-S0304389409014666-main.pdf: 934507 bytes, checksum: 7698a59ad532dcd3c0041ff71678c5a0 (MD5) (40)1-s2.0-S0304389409014666-main.pdf: 934507 bytes, checksum: 7698a59ad532dcd3c0041ff71678c5a0 (MD5)Made available in DSpace on 2012-05-30T20:09:43Z (GMT). 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dc.title.pt_BR.fl_str_mv Brazil nut shells as a new biosorbent to remove methylene blue and indigo carmine from aqueous solutions
dc.title.alternative.pt_BR.fl_str_mv Journal of Hazardous Materials
title Brazil nut shells as a new biosorbent to remove methylene blue and indigo carmine from aqueous solutions
spellingShingle Brazil nut shells as a new biosorbent to remove methylene blue and indigo carmine from aqueous solutions
Brito, Suzana Modesto de Oliveira
Biosorption
Low-cost adsorbents
Dye adsorption
Wastewater treatment
Color removal
title_short Brazil nut shells as a new biosorbent to remove methylene blue and indigo carmine from aqueous solutions
title_full Brazil nut shells as a new biosorbent to remove methylene blue and indigo carmine from aqueous solutions
title_fullStr Brazil nut shells as a new biosorbent to remove methylene blue and indigo carmine from aqueous solutions
title_full_unstemmed Brazil nut shells as a new biosorbent to remove methylene blue and indigo carmine from aqueous solutions
title_sort Brazil nut shells as a new biosorbent to remove methylene blue and indigo carmine from aqueous solutions
author Brito, Suzana Modesto de Oliveira
author_facet Brito, Suzana Modesto de Oliveira
Andrade, Heloysa Martins Carvalho
Soares, Luciana Frota
Azevedo, Rafael Pires de
author_role author
author2 Andrade, Heloysa Martins Carvalho
Soares, Luciana Frota
Azevedo, Rafael Pires de
author2_role author
author
author
dc.contributor.author.fl_str_mv Brito, Suzana Modesto de Oliveira
Andrade, Heloysa Martins Carvalho
Soares, Luciana Frota
Azevedo, Rafael Pires de
Brito, Suzana Modesto de Oliveira
Andrade, Heloysa Martins Carvalho
Soares, Luciana Frota
Azevedo, Rafael Pires de
dc.subject.por.fl_str_mv Biosorption
Low-cost adsorbents
Dye adsorption
Wastewater treatment
Color removal
topic Biosorption
Low-cost adsorbents
Dye adsorption
Wastewater treatment
Color removal
description Trabalho completo: acesso restrito, p. 84–92
publishDate 2010
dc.date.issued.fl_str_mv 2010-02-15
dc.date.accessioned.fl_str_mv 2012-05-30T20:09:43Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/6004
dc.identifier.issn.none.fl_str_mv 0304-3894
dc.identifier.number.pt_BR.fl_str_mv v. 174, n. 1–3
identifier_str_mv 0304-3894
v. 174, n. 1–3
url http://www.repositorio.ufba.br/ri/handle/ri/6004
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.jhazmat.2009.09.020
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
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instname_str Universidade Federal da Bahia (UFBA)
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reponame_str Repositório Institucional da UFBA
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