{"data":{"id":"10.6084/m9.figshare.6857879","type":"dois","attributes":{"doi":"10.6084/m9.figshare.6857879","prefix":"10.6084","suffix":"m9.figshare.6857879","identifiers":[],"alternateIdentifiers":[],"creators":[{"name":"Abreu, Flavia Oliveira Monteiro Da Silva","nameType":"Personal","givenName":"Flavia Oliveira Monteiro Da Silva","familyName":"Abreu","affiliation":[],"nameIdentifiers":[]},{"name":"Nilvan Alves Da Silva","affiliation":[],"nameIdentifiers":[]},{"name":"Sipauba, Mateus De Sousa","nameType":"Personal","givenName":"Mateus De Sousa","familyName":"Sipauba","affiliation":[],"nameIdentifiers":[]},{"name":"Pires, Tamara Fernandes Marques","nameType":"Personal","givenName":"Tamara Fernandes Marques","familyName":"Pires","affiliation":[],"nameIdentifiers":[]},{"name":"Bomfim, Tatiana Araújo","nameType":"Personal","givenName":"Tatiana Araújo","familyName":"Bomfim","affiliation":[],"nameIdentifiers":[]},{"name":"Oyrton Azevedo De Castro Monteiro Junior","affiliation":[],"nameIdentifiers":[]},{"name":"Forte, Maria Madalena De Camargo","nameType":"Personal","givenName":"Maria Madalena De Camargo","familyName":"Forte","affiliation":[],"nameIdentifiers":[]}],"titles":[{"title":"Chitosan and gum arabic nanoparticles for heavy metal adsorption"}],"publisher":"SciELO journals","container":{},"publicationYear":2018,"subjects":[{"subject":"91209 Polymers and Plastics","subjectScheme":"FOR"},{"subject":"FOS: Materials engineering","schemeUri":"http://www.oecd.org/science/inno/38235147.pdf","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"FOS: Materials engineering","subjectScheme":"Fields of Science and Technology (FOS)"}],"contributors":[],"dates":[{"date":"2018-07-25","dateType":"Created"},{"date":"2018-07-25","dateType":"Updated"},{"date":"2018","dateType":"Issued"}],"language":null,"types":{"ris":"DATA","bibtex":"misc","citeproc":"dataset","schemaOrg":"Dataset","resourceType":"Dataset","resourceTypeGeneral":"Dataset"},"relatedIdentifiers":[{"relationType":"IsSupplementTo","relatedIdentifier":"10.1590/0104-1428.02317","relatedIdentifierType":"DOI"}],"relatedItems":[],"sizes":["391881 Bytes"],"formats":[],"version":null,"rightsList":[{"rights":"Creative Commons Attribution 4.0 International","rightsUri":"https://creativecommons.org/licenses/by/4.0/legalcode","schemeUri":"https://spdx.org/licenses/","rightsIdentifier":"cc-by-4.0","rightsIdentifierScheme":"SPDX"}],"descriptions":[{"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 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