Adsorption of acid blue 1 on activated carbon produced from the wood of Ailanthus altissima
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | |
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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Brazilian Journal of Chemical Engineering |
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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 |
_version_ |
1754213172752941056 |