Chitosan and gum arabic nanoparticles for heavy metal adsorption

Detalhes bibliográficos
Autor(a) principal: Abreu,Flavia Oliveira Monteiro da Silva
Data de Publicação: 2018
Outros Autores: 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
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.
id ABPO-1_b15f6166b60e61c954f1962f69b9ad01
oai_identifier_str oai:scielo:S0104-14282018000300231
network_acronym_str ABPO-1
network_name_str Polímeros (São Carlos. Online)
repository_id_str
spelling 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