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dc.creatorMilosavljevic, Nedeljko B.
dc.creatorRistic, Mirjana D.
dc.creatorPeric-Grujic, Aleksandra A.
dc.creatorFilipovic, Jovanka M.
dc.creatorŠtrbac, Svetlana
dc.creatorRakočević, Zlatko Lj.
dc.creatorKalagasidis Krušić, Melina
dc.date.accessioned2019-01-30T17:26:01Z
dc.date.available2019-01-30T17:26:01Z
dc.date.issued2011
dc.identifier.issn0927-7757
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/800
dc.description.abstractA removal of Cu2+ ions from aqueous solutions onto hydrogels of chitosan. itaconic and methacrylic acid has been investigated using batch adsorption technique. The extent of adsorption was investigated as a function of pH, adsorbent dose, initial metal ion concentration, contact time and temperature. The FIR spectra showed that -NH2, -OH and -COOH groups are involved in the Cu2+ ions adsorption. The surface topography changes were observed by AFM, where the phase images indicated that sorption takes place on the surface of the hydrogel and in the bulk. Pseudo-first order, pseudo-second order and intraparticle diffusion models were analyzed and showed that the Cu2+ ions adsorption followed pseudo-second order kinetics. The equilibrium data were analyzed using Langmuir, Freundlich and Redlich-Peterson isotherms and the best interpretation was given by Redlich-Peterson. The adsorption capacity was found to be 122.59 mg/g, based on the non-linear Langmuir isotherm. Based on the separation factor. R-L, the Cu2+ ion adsorption is favorable, while the low activation energies indicate physisorption. Desorption experiments, done with a nitric acid, showed that the investigated hydrogels could be reused without significant losses of the initial properties even after three adsorption-sorption cycles.en
dc.publisherElsevier Science Bv, Amsterdam
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172062/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172007/RS//
dc.rightsrestrictedAccess
dc.sourceColloids and Surfaces A-Physicochemical and Engineering Aspects
dc.subjectHydrogelen
dc.subjectCu2+ adsorptionen
dc.subjectAFMen
dc.subjectAdsorption isothermen
dc.subjectKinetic modelen
dc.subjectDesorptionen
dc.titleRemoval of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium studyen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractПериц-Грујиц, Aлександра A.; Филиповиц, Јованка М.; Ристиц, Мирјана Д.; Милосављевиц, Недељко Б.; Штрбац, Светлана; Ракочевић, Златко Љ.; Крусиц, Мелина Т. Калагасидис;
dc.citation.volume388
dc.citation.issue1-3
dc.citation.spage59
dc.citation.epage69
dc.citation.other388(1-3): 59-69
dc.citation.rankM22
dc.identifier.doi10.1016/j.colsurfa.2011.08.011
dc.identifier.rcubConv_2679
dc.identifier.scopus2-s2.0-80052941188
dc.identifier.wos000296222700008
dc.type.versionpublishedVersion


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