Adequacy of isotherm adsorption of black 5 reactive dye for crosslinked chitosan microspheres

Detalhes bibliográficos
Autor(a) principal: Kimura, Irene Yukiko
Data de Publicação: 2008
Outros Autores: Favere, Valfredo Tadeu, Martins, Amarildo Otavio, Spinelli, Viviane Aparecida, Josué, Atche
Tipo de documento: Artigo
Idioma: por
Título da fonte: Acta scientiarum. Technology (Online)
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2753
Resumo: Chitosan microspheres with average diameter 1.03 ± 0.06 mm and degree of deacetylation of 72.5% were employed as adsorbent for reactive dye black 5. Chitosan was characterized through infrared spectroscopy (IR), 13C NMR spectrum and deacetylation degree (DD%), and crosslinked with glutaraldehyde 2.5% (w/v) to increase its resistance in acid medium. Corresponding isotherms were obtained in acid and alkaline solutions. Experimental data were fitted by Langmuir’s, extended Freundlich’s and Nernst’s isotherms. Adsorption was more effective in acid medium and adjusted better the Langmuir’s isotherm
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spelling Adequacy of isotherm adsorption of black 5 reactive dye for crosslinked chitosan microspheresAdequação da isoterma de adsorção do corante reativo preto 5 pelas microesferas de quitosana reticuladaadsorçãomicroesfera de quitosanacorante reativo1.06.00.00-0 QuímicaChitosan microspheres with average diameter 1.03 ± 0.06 mm and degree of deacetylation of 72.5% were employed as adsorbent for reactive dye black 5. Chitosan was characterized through infrared spectroscopy (IR), 13C NMR spectrum and deacetylation degree (DD%), and crosslinked with glutaraldehyde 2.5% (w/v) to increase its resistance in acid medium. Corresponding isotherms were obtained in acid and alkaline solutions. Experimental data were fitted by Langmuir’s, extended Freundlich’s and Nernst’s isotherms. Adsorption was more effective in acid medium and adjusted better the Langmuir’s isothermMicroesferas de quitosana, com diâmetro médio 1,03 ± 0,06 mm e grau de desacetilação de 72,5%, foram empregadas como adsorvente para o corante reativo preto 5. A quitosana foi caracterizada através de espectroscopia no infravermelho (IV), RMN 13C e grau de desacetilação (GD%) e reticulada com glutaraldeído 2,5% (m/v) para aumentar a sua resistência em meio ácido. As isotermas correspondentes foram obtidas em soluções ácidas e alcalinas. Dados experimentais foram plotados usando as isotermas de Langmuir, Freundlich estendida e Nernst, mostrando que a adsorção foi mais efetiva em meio ácido e ajustando melhor a isoterma de LangmuirUniversidade Estadual De Maringá2008-05-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/275310.4025/actascitechnol.v23i0.2753Acta Scientiarum. Technology; Vol 23 (2001); 1313-1317Acta Scientiarum. Technology; v. 23 (2001); 1313-13171806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2753/1821Kimura, Irene YukikoFavere, Valfredo TadeuMartins, Amarildo OtavioSpinelli, Viviane AparecidaJosué, Atcheinfo:eu-repo/semantics/openAccess2024-05-17T13:02:47Zoai:periodicos.uem.br/ojs:article/2753Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2024-05-17T13:02:47Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Adequacy of isotherm adsorption of black 5 reactive dye for crosslinked chitosan microspheres
Adequação da isoterma de adsorção do corante reativo preto 5 pelas microesferas de quitosana reticulada
title Adequacy of isotherm adsorption of black 5 reactive dye for crosslinked chitosan microspheres
spellingShingle Adequacy of isotherm adsorption of black 5 reactive dye for crosslinked chitosan microspheres
Kimura, Irene Yukiko
adsorção
microesfera de quitosana
corante reativo
1.06.00.00-0 Química
title_short Adequacy of isotherm adsorption of black 5 reactive dye for crosslinked chitosan microspheres
title_full Adequacy of isotherm adsorption of black 5 reactive dye for crosslinked chitosan microspheres
title_fullStr Adequacy of isotherm adsorption of black 5 reactive dye for crosslinked chitosan microspheres
title_full_unstemmed Adequacy of isotherm adsorption of black 5 reactive dye for crosslinked chitosan microspheres
title_sort Adequacy of isotherm adsorption of black 5 reactive dye for crosslinked chitosan microspheres
author Kimura, Irene Yukiko
author_facet Kimura, Irene Yukiko
Favere, Valfredo Tadeu
Martins, Amarildo Otavio
Spinelli, Viviane Aparecida
Josué, Atche
author_role author
author2 Favere, Valfredo Tadeu
Martins, Amarildo Otavio
Spinelli, Viviane Aparecida
Josué, Atche
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Kimura, Irene Yukiko
Favere, Valfredo Tadeu
Martins, Amarildo Otavio
Spinelli, Viviane Aparecida
Josué, Atche
dc.subject.por.fl_str_mv adsorção
microesfera de quitosana
corante reativo
1.06.00.00-0 Química
topic adsorção
microesfera de quitosana
corante reativo
1.06.00.00-0 Química
description Chitosan microspheres with average diameter 1.03 ± 0.06 mm and degree of deacetylation of 72.5% were employed as adsorbent for reactive dye black 5. Chitosan was characterized through infrared spectroscopy (IR), 13C NMR spectrum and deacetylation degree (DD%), and crosslinked with glutaraldehyde 2.5% (w/v) to increase its resistance in acid medium. Corresponding isotherms were obtained in acid and alkaline solutions. Experimental data were fitted by Langmuir’s, extended Freundlich’s and Nernst’s isotherms. Adsorption was more effective in acid medium and adjusted better the Langmuir’s isotherm
publishDate 2008
dc.date.none.fl_str_mv 2008-05-05
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2753
10.4025/actascitechnol.v23i0.2753
url http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2753
identifier_str_mv 10.4025/actascitechnol.v23i0.2753
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2753/1821
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Estadual De Maringá
publisher.none.fl_str_mv Universidade Estadual De Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Technology; Vol 23 (2001); 1313-1317
Acta Scientiarum. Technology; v. 23 (2001); 1313-1317
1806-2563
1807-8664
reponame:Acta scientiarum. Technology (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta scientiarum. Technology (Online)
collection Acta scientiarum. Technology (Online)
repository.name.fl_str_mv Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv ||actatech@uem.br
_version_ 1799315332467261440

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