Chitosan and gum arabic nanoparticles for heavy metal adsorption
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...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Associação Brasileira de Polímeros
2018-07-01
|
| Series: | Polímeros |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282018000300231&lng=en&tlng=en |
| _version_ | 1819230348346654720 |
|---|---|
| author | Flavia Oliveira Monteiro da Silva Abreu Nilvan Alves da Silva Mateus de Sousa Sipauba Tamara Fernandes Marques Pires Tatiana Araújo Bomfim Oyrton Azevedo de Castro Monteiro Junior Maria Madalena de Camargo Forte |
| author_facet | Flavia Oliveira Monteiro da Silva Abreu Nilvan Alves da Silva Mateus de Sousa Sipauba Tamara Fernandes Marques Pires Tatiana Araújo Bomfim Oyrton Azevedo de Castro Monteiro Junior Maria Madalena de Camargo Forte |
| author_sort | Flavia Oliveira Monteiro da Silva Abreu |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-23T11:27:38Z |
| format | Article |
| id | doaj.art-5e366e1ccce842e3b6a13c8b62660356 |
| institution | Directory Open Access Journal |
| issn | 1678-5169 |
| language | English |
| last_indexed | 2024-12-23T11:27:38Z |
| publishDate | 2018-07-01 |
| publisher | Associação Brasileira de Polímeros |
| record_format | Article |
| series | Polímeros |
| spelling | doaj.art-5e366e1ccce842e3b6a13c8b626603562022-12-21T17:48:54ZengAssociação Brasileira de PolímerosPolímeros1678-51692018-07-0128323123810.1590/0104-1428.02317S0104-14282018000300231Chitosan and gum arabic nanoparticles for heavy metal adsorptionFlavia Oliveira Monteiro da Silva AbreuNilvan Alves da SilvaMateus de Sousa SipaubaTamara Fernandes Marques PiresTatiana Araújo BomfimOyrton Azevedo de Castro Monteiro JuniorMaria Madalena de Camargo ForteAbstract 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282018000300231&lng=en&tlng=enadsorptionchitosannanoparticlespolyelectrolytes |
| spellingShingle | Flavia Oliveira Monteiro da Silva Abreu Nilvan Alves da Silva Mateus de Sousa Sipauba Tamara Fernandes Marques Pires Tatiana Araújo Bomfim Oyrton Azevedo de Castro Monteiro Junior Maria Madalena de Camargo Forte Chitosan and gum arabic nanoparticles for heavy metal adsorption Polímeros adsorption chitosan nanoparticles polyelectrolytes |
| title | 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_short | Chitosan and gum arabic nanoparticles for heavy metal adsorption |
| title_sort | chitosan and gum arabic nanoparticles for heavy metal adsorption |
| topic | adsorption chitosan nanoparticles polyelectrolytes |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282018000300231&lng=en&tlng=en |
| work_keys_str_mv | AT flaviaoliveiramonteirodasilvaabreu chitosanandgumarabicnanoparticlesforheavymetaladsorption AT nilvanalvesdasilva chitosanandgumarabicnanoparticlesforheavymetaladsorption AT mateusdesousasipauba chitosanandgumarabicnanoparticlesforheavymetaladsorption AT tamarafernandesmarquespires chitosanandgumarabicnanoparticlesforheavymetaladsorption AT tatianaaraujobomfim chitosanandgumarabicnanoparticlesforheavymetaladsorption AT oyrtonazevedodecastromonteirojunior chitosanandgumarabicnanoparticlesforheavymetaladsorption AT mariamadalenadecamargoforte chitosanandgumarabicnanoparticlesforheavymetaladsorption |