Adsorção de arsênio(V) pela quitosana ferro - III reticulada

Detalhes bibliográficos
Autor(a) principal: Fagundes,Tathyane
Data de Publicação: 2008
Outros Autores: Bachmann,Amanda Wolff Ledra, Tomaz,Heloísa Sonálio Overrath, Rodrigues,Clóvis Antonio
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000600006
Resumo: The removal of As(V) by a crosslinked iron(III)-chitosan adsorbent was evaluated under various conditions. The adsorption capacity of CH-FeCL was around 54 mg/g of As(V). The kinetics of adsorption obeys a pseudo-first-order model with rate constants equal to 0.022, 0.028, and 0.033 min-1 at 15, 25 and 35 ºC respectively. Adsorption data were well described by the Langmuir model, although they could be modeled also by the Langmuir-Freundlich equation. The maximum adsorption capacity, calculated with the Langmuir model, was 127 mg g-1 of As(V). The inhibition by competing anions is dependant on their kind and valence.
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spelling Adsorção de arsênio(V) pela quitosana ferro - III reticuladacrosslinked iron(III)-chitosanarsenateadsorptionThe removal of As(V) by a crosslinked iron(III)-chitosan adsorbent was evaluated under various conditions. The adsorption capacity of CH-FeCL was around 54 mg/g of As(V). The kinetics of adsorption obeys a pseudo-first-order model with rate constants equal to 0.022, 0.028, and 0.033 min-1 at 15, 25 and 35 ºC respectively. Adsorption data were well described by the Langmuir model, although they could be modeled also by the Langmuir-Freundlich equation. The maximum adsorption capacity, calculated with the Langmuir model, was 127 mg g-1 of As(V). The inhibition by competing anions is dependant on their kind and valence.Sociedade Brasileira de Química2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000600006Química Nova v.31 n.6 2008reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422008000600006info:eu-repo/semantics/openAccessFagundes,TathyaneBachmann,Amanda Wolff LedraTomaz,Heloísa Sonálio OverrathRodrigues,Clóvis Antoniopor2008-10-10T00:00:00Zoai:scielo:S0100-40422008000600006Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2008-10-10T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Adsorção de arsênio(V) pela quitosana ferro - III reticulada
title Adsorção de arsênio(V) pela quitosana ferro - III reticulada
spellingShingle Adsorção de arsênio(V) pela quitosana ferro - III reticulada
Fagundes,Tathyane
crosslinked iron(III)-chitosan
arsenate
adsorption
title_short Adsorção de arsênio(V) pela quitosana ferro - III reticulada
title_full Adsorção de arsênio(V) pela quitosana ferro - III reticulada
title_fullStr Adsorção de arsênio(V) pela quitosana ferro - III reticulada
title_full_unstemmed Adsorção de arsênio(V) pela quitosana ferro - III reticulada
title_sort Adsorção de arsênio(V) pela quitosana ferro - III reticulada
author Fagundes,Tathyane
author_facet Fagundes,Tathyane
Bachmann,Amanda Wolff Ledra
Tomaz,Heloísa Sonálio Overrath
Rodrigues,Clóvis Antonio
author_role author
author2 Bachmann,Amanda Wolff Ledra
Tomaz,Heloísa Sonálio Overrath
Rodrigues,Clóvis Antonio
author2_role author
author
author
dc.contributor.author.fl_str_mv Fagundes,Tathyane
Bachmann,Amanda Wolff Ledra
Tomaz,Heloísa Sonálio Overrath
Rodrigues,Clóvis Antonio
dc.subject.por.fl_str_mv crosslinked iron(III)-chitosan
arsenate
adsorption
topic crosslinked iron(III)-chitosan
arsenate
adsorption
description The removal of As(V) by a crosslinked iron(III)-chitosan adsorbent was evaluated under various conditions. The adsorption capacity of CH-FeCL was around 54 mg/g of As(V). The kinetics of adsorption obeys a pseudo-first-order model with rate constants equal to 0.022, 0.028, and 0.033 min-1 at 15, 25 and 35 ºC respectively. Adsorption data were well described by the Langmuir model, although they could be modeled also by the Langmuir-Freundlich equation. The maximum adsorption capacity, calculated with the Langmuir model, was 127 mg g-1 of As(V). The inhibition by competing anions is dependant on their kind and valence.
publishDate 2008
dc.date.none.fl_str_mv 2008-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000600006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000600006
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40422008000600006
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.31 n.6 2008
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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