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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.accessioned2019-01-30T17:26:09Z
dc.date.available2019-01-30T17:26:09Z
dc.date.issued2011
dc.identifier.issn0304-3894
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/805
dc.description.abstractNovel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid were applied as adsorbents for the removal of Zn(2+) ions from aqueous solution. In batch tests, the influence of solution pH, contact time, initial metal ion concentration and temperature was examined. The sorption was found pH dependent, pH 5.5 being the optimum value. The adsorption process was well described by the pseudosecond order kinetic. The hydrogels were characterized by spectral (Fourier transform infrared-FTIR) and structural (SEM/EDX and atomic force microscopy-AFM) analyses. The surface topography changes were observed by atomic force microscopy, while the changes in surface composition were detected using phase imaging AFM. The negative values of free energy and enthalpy indicated that the adsorption is spontaneous and exothermic one. The best fitting isotherms were Langmuir and Redlich-Peterson and it was found that both linear and nonlinear methods were appropriate for obtaining the isotherm parameters. However, the increase of temperature leads to higher adsorption capacity, since swelling degree increased with temperature.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.sourceJournal of Hazardous Materials
dc.subjectHydrogelen
dc.subjectKinetic modelen
dc.subjectAdsorption isothermen
dc.subjectSeparationen
dc.subjectAtomic force microscopyen
dc.titleSorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic aciden
dc.typearticle
dc.rights.licenseARR
dcterms.abstractПериц-Грујиц, Aлександра A.; Крусиц, Мелина Т. Калагасидис; Штрбац, Светлана; Ракочевић, Златко Љ.; Милосављевиц, Недељко Б.; Филиповиц, Јованка М.; Ристиц, Мирјана Д.;
dc.citation.volume192
dc.citation.issue2
dc.citation.spage846
dc.citation.epage854
dc.citation.other192(2): 846-854
dc.citation.rankaM21
dc.identifier.pmid21703762
dc.identifier.doi10.1016/j.jhazmat.2011.05.093
dc.identifier.rcubConv_2640
dc.identifier.scopus2-s2.0-79960164022
dc.identifier.wos000293314000055
dc.type.versionpublishedVersion


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