Chitosan and gum arabic nanoparticles for heavy metal adsorption
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Polímeros (São Carlos. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282018000300231 |
Resumo: | Abstract Chitosan (CT) is a polysaccharide with the ability to adsorb metals on its surface. In this work, CT-based nanoparticles (NPs) are produced by complex formation with gum arabic (GA) to increase their adsorbent potential for removal of heavy metals in aqueous medium. Adsorption efficiency is evaluated as a function of NP composition and polysaccharide concentration. NPs are sized from 250 to 375 nm at a zeta potential up to -25 mV, suggesting stability to adsorb metals. In particular, CTGA56 and CTGA80 NPs adsorbed a substantially higher amount of copper ions than pure CT. Adsorption kinetics studies showed that the reaction process followed a pseudo second-order model and the adsorption isotherm results fit a Langmuir model, highlighting the monolayer adsorption process with prominent adsorption capacity. These findings indicate the adsorbent potential of CTGA NPs and suggest that these particles can be used for removal of metal ions from contaminated water sources. |
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Chitosan and gum arabic nanoparticles for heavy metal adsorptionadsorptionchitosannanoparticlespolyelectrolytesAbstract Chitosan (CT) is a polysaccharide with the ability to adsorb metals on its surface. In this work, CT-based nanoparticles (NPs) are produced by complex formation with gum arabic (GA) to increase their adsorbent potential for removal of heavy metals in aqueous medium. Adsorption efficiency is evaluated as a function of NP composition and polysaccharide concentration. NPs are sized from 250 to 375 nm at a zeta potential up to -25 mV, suggesting stability to adsorb metals. In particular, CTGA56 and CTGA80 NPs adsorbed a substantially higher amount of copper ions than pure CT. Adsorption kinetics studies showed that the reaction process followed a pseudo second-order model and the adsorption isotherm results fit a Langmuir model, highlighting the monolayer adsorption process with prominent adsorption capacity. These findings indicate the adsorbent potential of CTGA NPs and suggest that these particles can be used for removal of metal ions from contaminated water sources.Associação Brasileira de Polímeros2018-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282018000300231Polímeros v.28 n.3 2018reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.1590/0104-1428.02317info:eu-repo/semantics/openAccessAbreu,Flavia Oliveira Monteiro da SilvaSilva,Nilvan Alves daSipauba,Mateus de SousaPires,Tamara Fernandes MarquesBomfim,Tatiana AraújoMonteiro Junior,Oyrton Azevedo de CastroForte,Maria Madalena de Camargoeng2018-08-03T00:00:00Zoai:scielo:S0104-14282018000300231Revistahttp://www.scielo.br/pohttps://old.scielo.br/oai/scielo-oai.php||revista@abpol.org.br1678-51690104-1428opendoar:2018-08-03T00:00Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)false |
dc.title.none.fl_str_mv |
Chitosan and gum arabic nanoparticles for heavy metal adsorption |
title |
Chitosan and gum arabic nanoparticles for heavy metal adsorption |
spellingShingle |
Chitosan and gum arabic nanoparticles for heavy metal adsorption Abreu,Flavia Oliveira Monteiro da Silva adsorption chitosan nanoparticles polyelectrolytes |
title_short |
Chitosan and gum arabic nanoparticles for heavy metal adsorption |
title_full |
Chitosan and gum arabic nanoparticles for heavy metal adsorption |
title_fullStr |
Chitosan and gum arabic nanoparticles for heavy metal adsorption |
title_full_unstemmed |
Chitosan and gum arabic nanoparticles for heavy metal adsorption |
title_sort |
Chitosan and gum arabic nanoparticles for heavy metal adsorption |
author |
Abreu,Flavia Oliveira Monteiro da Silva |
author_facet |
Abreu,Flavia Oliveira Monteiro da Silva Silva,Nilvan Alves da Sipauba,Mateus de Sousa Pires,Tamara Fernandes Marques Bomfim,Tatiana Araújo Monteiro Junior,Oyrton Azevedo de Castro Forte,Maria Madalena de Camargo |
author_role |
author |
author2 |
Silva,Nilvan Alves da Sipauba,Mateus de Sousa Pires,Tamara Fernandes Marques Bomfim,Tatiana Araújo Monteiro Junior,Oyrton Azevedo de Castro Forte,Maria Madalena de Camargo |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Abreu,Flavia Oliveira Monteiro da Silva Silva,Nilvan Alves da Sipauba,Mateus de Sousa Pires,Tamara Fernandes Marques Bomfim,Tatiana Araújo Monteiro Junior,Oyrton Azevedo de Castro Forte,Maria Madalena de Camargo |
dc.subject.por.fl_str_mv |
adsorption chitosan nanoparticles polyelectrolytes |
topic |
adsorption chitosan nanoparticles polyelectrolytes |
description |
Abstract Chitosan (CT) is a polysaccharide with the ability to adsorb metals on its surface. In this work, CT-based nanoparticles (NPs) are produced by complex formation with gum arabic (GA) to increase their adsorbent potential for removal of heavy metals in aqueous medium. Adsorption efficiency is evaluated as a function of NP composition and polysaccharide concentration. NPs are sized from 250 to 375 nm at a zeta potential up to -25 mV, suggesting stability to adsorb metals. In particular, CTGA56 and CTGA80 NPs adsorbed a substantially higher amount of copper ions than pure CT. Adsorption kinetics studies showed that the reaction process followed a pseudo second-order model and the adsorption isotherm results fit a Langmuir model, highlighting the monolayer adsorption process with prominent adsorption capacity. These findings indicate the adsorbent potential of CTGA NPs and suggest that these particles can be used for removal of metal ions from contaminated water sources. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-09-01 |
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=S0104-14282018000300231 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282018000300231 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0104-1428.02317 |
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 |
Associação Brasileira de Polímeros |
publisher.none.fl_str_mv |
Associação Brasileira de Polímeros |
dc.source.none.fl_str_mv |
Polímeros v.28 n.3 2018 reponame:Polímeros (São Carlos. Online) instname:Associação Brasileira de Polímeros (ABPol) instacron:ABPO |
instname_str |
Associação Brasileira de Polímeros (ABPol) |
instacron_str |
ABPO |
institution |
ABPO |
reponame_str |
Polímeros (São Carlos. Online) |
collection |
Polímeros (São Carlos. Online) |
repository.name.fl_str_mv |
Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol) |
repository.mail.fl_str_mv |
||revista@abpol.org.br |
_version_ |
1754212590561525760 |