Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Materials research (São Carlos. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000100016 |
Resumo: | Cu (II) removal equilibrium from aqueous solutions using calcined clays "Bofe" and "Verde-lodo" has been studied by batch and fixed-bed in static and dynamic systems, respectively. Analyses were performed for physicochemical characterization of clays using the techniques: X-ray fluorescence (XRF), thermogravimetry (TG), N2 adsorption (BET) and Cationic Exchange Capacity (CEC). Batch experiments were performed at a constant temperature, adjusting the pH of the solution in contact with clays. Adsorption assays in fixed bed were conducted at the flow rate determined through mass transfer zone (MTZ). Langmuir and Freundlich models were adjusted to equilibrium data. The results of characterization indicated that the temperature of 500ºC is best suited for the calcination of the clays. The maximum adsorption capacity was higher for dynamic system than fixed bed compared to static system, enhancing from 0.0748 to 0.1371 and from 0.0599 to 0.22 mmol.g-1 of clay for "Bofe" and "Verde-lodo", respectively. |
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Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systemsadsorptionheavy metal removalbentonitic clayCu (II) removal equilibrium from aqueous solutions using calcined clays "Bofe" and "Verde-lodo" has been studied by batch and fixed-bed in static and dynamic systems, respectively. Analyses were performed for physicochemical characterization of clays using the techniques: X-ray fluorescence (XRF), thermogravimetry (TG), N2 adsorption (BET) and Cationic Exchange Capacity (CEC). Batch experiments were performed at a constant temperature, adjusting the pH of the solution in contact with clays. Adsorption assays in fixed bed were conducted at the flow rate determined through mass transfer zone (MTZ). Langmuir and Freundlich models were adjusted to equilibrium data. The results of characterization indicated that the temperature of 500ºC is best suited for the calcination of the clays. The maximum adsorption capacity was higher for dynamic system than fixed bed compared to static system, enhancing from 0.0748 to 0.1371 and from 0.0599 to 0.22 mmol.g-1 of clay for "Bofe" and "Verde-lodo", respectively.ABM, ABC, ABPol2012-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000100016Materials Research v.15 n.1 2012reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392011005000089info:eu-repo/semantics/openAccessAlmeida Neto,Ambrósio Florêncio deVieira,Melissa Gurgel AdeodatoSilva,Meuris Gurgel Carlos daeng2012-02-23T00:00:00Zoai:scielo:S1516-14392012000100016Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2012-02-23T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems |
title |
Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems |
spellingShingle |
Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems Almeida Neto,Ambrósio Florêncio de adsorption heavy metal removal bentonitic clay |
title_short |
Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems |
title_full |
Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems |
title_fullStr |
Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems |
title_full_unstemmed |
Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems |
title_sort |
Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems |
author |
Almeida Neto,Ambrósio Florêncio de |
author_facet |
Almeida Neto,Ambrósio Florêncio de Vieira,Melissa Gurgel Adeodato Silva,Meuris Gurgel Carlos da |
author_role |
author |
author2 |
Vieira,Melissa Gurgel Adeodato Silva,Meuris Gurgel Carlos da |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Almeida Neto,Ambrósio Florêncio de Vieira,Melissa Gurgel Adeodato Silva,Meuris Gurgel Carlos da |
dc.subject.por.fl_str_mv |
adsorption heavy metal removal bentonitic clay |
topic |
adsorption heavy metal removal bentonitic clay |
description |
Cu (II) removal equilibrium from aqueous solutions using calcined clays "Bofe" and "Verde-lodo" has been studied by batch and fixed-bed in static and dynamic systems, respectively. Analyses were performed for physicochemical characterization of clays using the techniques: X-ray fluorescence (XRF), thermogravimetry (TG), N2 adsorption (BET) and Cationic Exchange Capacity (CEC). Batch experiments were performed at a constant temperature, adjusting the pH of the solution in contact with clays. Adsorption assays in fixed bed were conducted at the flow rate determined through mass transfer zone (MTZ). Langmuir and Freundlich models were adjusted to equilibrium data. The results of characterization indicated that the temperature of 500ºC is best suited for the calcination of the clays. The maximum adsorption capacity was higher for dynamic system than fixed bed compared to static system, enhancing from 0.0748 to 0.1371 and from 0.0599 to 0.22 mmol.g-1 of clay for "Bofe" and "Verde-lodo", respectively. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-02-01 |
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=S1516-14392012000100016 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000100016 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-14392011005000089 |
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 |
ABM, ABC, ABPol |
publisher.none.fl_str_mv |
ABM, ABC, ABPol |
dc.source.none.fl_str_mv |
Materials Research v.15 n.1 2012 reponame:Materials research (São Carlos. Online) instname:Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
instname_str |
Universidade Federal de São Carlos (UFSCAR) |
instacron_str |
ABM ABC ABPOL |
institution |
ABM ABC ABPOL |
reponame_str |
Materials research (São Carlos. Online) |
collection |
Materials research (São Carlos. Online) |
repository.name.fl_str_mv |
Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR) |
repository.mail.fl_str_mv |
dedz@power.ufscar.br |
_version_ |
1754212660526710784 |