Adsorption of acid blue 1 on activated carbon produced from the wood of Ailanthus altissima

Detalhes bibliográficos
Autor(a) principal: Bangash,F. K.
Data de Publicação: 2009
Outros Autores: Alam,S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Chemical Engineering
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322009000200005
Resumo: Carbon prepared from the wood of Ailanthus altissima, at 400 and 800ºC was used to adsorb acid blue 1 from aqueous solution at 10ºC and 45ºC. Characterization by XRD, SEM, EDS and FTIR shows that the surfaces contain functional groups like carboxyl which disappear at 800 ºC and thus favor the exposure of more porous structural surfaces which enhance the adsorption capacity. Relatively high amounts of carbon with respect to oxygen were found with the increase in activation temperature. First order, Bangham and parabolic models were found to fit the adsorption kinetic data. The reaction rate increased with the increase in temperature of adsorption/activation. Thermodynamic parameters like ΔE≠ , ΔH≠ , ΔS≠ and ΔG≠ were calculated. The negative values of ΔS≠ reflect the decrease in the disorder of the system at the solid-solution interface, during adsorption. Gibbs free energy ( ΔG≠) represents the driving force for the affinity of dye for the carbon and it decreased with the increase in adsorption/activation temperature.
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spelling Adsorption of acid blue 1 on activated carbon produced from the wood of Ailanthus altissimaActivated carbonAcid blue 1AdsorptionCharacterizationCarbon prepared from the wood of Ailanthus altissima, at 400 and 800ºC was used to adsorb acid blue 1 from aqueous solution at 10ºC and 45ºC. Characterization by XRD, SEM, EDS and FTIR shows that the surfaces contain functional groups like carboxyl which disappear at 800 ºC and thus favor the exposure of more porous structural surfaces which enhance the adsorption capacity. Relatively high amounts of carbon with respect to oxygen were found with the increase in activation temperature. First order, Bangham and parabolic models were found to fit the adsorption kinetic data. The reaction rate increased with the increase in temperature of adsorption/activation. Thermodynamic parameters like ΔE≠ , ΔH≠ , ΔS≠ and ΔG≠ were calculated. The negative values of ΔS≠ reflect the decrease in the disorder of the system at the solid-solution interface, during adsorption. Gibbs free energy ( ΔG≠) represents the driving force for the affinity of dye for the carbon and it decreased with the increase in adsorption/activation temperature.Brazilian Society of Chemical Engineering2009-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322009000200005Brazilian Journal of Chemical Engineering v.26 n.2 2009reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322009000200005info:eu-repo/semantics/openAccessBangash,F. K.Alam,S.eng2009-06-23T00:00:00Zoai:scielo:S0104-66322009000200005Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2009-06-23T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false
dc.title.none.fl_str_mv Adsorption of acid blue 1 on activated carbon produced from the wood of Ailanthus altissima
title Adsorption of acid blue 1 on activated carbon produced from the wood of Ailanthus altissima
spellingShingle Adsorption of acid blue 1 on activated carbon produced from the wood of Ailanthus altissima
Bangash,F. K.
Activated carbon
Acid blue 1
Adsorption
Characterization
title_short Adsorption of acid blue 1 on activated carbon produced from the wood of Ailanthus altissima
title_full Adsorption of acid blue 1 on activated carbon produced from the wood of Ailanthus altissima
title_fullStr Adsorption of acid blue 1 on activated carbon produced from the wood of Ailanthus altissima
title_full_unstemmed Adsorption of acid blue 1 on activated carbon produced from the wood of Ailanthus altissima
title_sort Adsorption of acid blue 1 on activated carbon produced from the wood of Ailanthus altissima
author Bangash,F. K.
author_facet Bangash,F. K.
Alam,S.
author_role author
author2 Alam,S.
author2_role author
dc.contributor.author.fl_str_mv Bangash,F. K.
Alam,S.
dc.subject.por.fl_str_mv Activated carbon
Acid blue 1
Adsorption
Characterization
topic Activated carbon
Acid blue 1
Adsorption
Characterization
description Carbon prepared from the wood of Ailanthus altissima, at 400 and 800ºC was used to adsorb acid blue 1 from aqueous solution at 10ºC and 45ºC. Characterization by XRD, SEM, EDS and FTIR shows that the surfaces contain functional groups like carboxyl which disappear at 800 ºC and thus favor the exposure of more porous structural surfaces which enhance the adsorption capacity. Relatively high amounts of carbon with respect to oxygen were found with the increase in activation temperature. First order, Bangham and parabolic models were found to fit the adsorption kinetic data. The reaction rate increased with the increase in temperature of adsorption/activation. Thermodynamic parameters like ΔE≠ , ΔH≠ , ΔS≠ and ΔG≠ were calculated. The negative values of ΔS≠ reflect the decrease in the disorder of the system at the solid-solution interface, during adsorption. Gibbs free energy ( ΔG≠) represents the driving force for the affinity of dye for the carbon and it decreased with the increase in adsorption/activation temperature.
publishDate 2009
dc.date.none.fl_str_mv 2009-06-01
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=S0104-66322009000200005
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322009000200005
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0104-66322009000200005
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 Brazilian Society of Chemical Engineering
publisher.none.fl_str_mv Brazilian Society of Chemical Engineering
dc.source.none.fl_str_mv Brazilian Journal of Chemical Engineering v.26 n.2 2009
reponame:Brazilian Journal of Chemical Engineering
instname:Associação Brasileira de Engenharia Química (ABEQ)
instacron:ABEQ
instname_str Associação Brasileira de Engenharia Química (ABEQ)
instacron_str ABEQ
institution ABEQ
reponame_str Brazilian Journal of Chemical Engineering
collection Brazilian Journal of Chemical Engineering
repository.name.fl_str_mv Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)
repository.mail.fl_str_mv rgiudici@usp.br||rgiudici@usp.br
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