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dc.creatorMarković, Bojana M.
dc.creatorStefanovic, Ivan S.
dc.creatorHercigonja, Radmila V.
dc.creatorPergal, Marija V.
dc.creatorMarković, Jelena P.
dc.creatorOnjia, Antonije E.
dc.creatorNastasović, Aleksandra B.
dc.date.accessioned2018-03-01T17:31:11Z
dc.date.available2018-03-01T17:31:11Z
dc.date.issued2017
dc.identifier.issn0959-8103 (print)
dc.identifier.issn1097-0126 (electronic)
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/1501
dc.description.abstractMacroporous copolymers of poly[(glycidyl methacrylate)-co-(ethylene glycol dimethacrylate)] (PGME) with various crosslinker (ethylene glycol dimethacrylate) concentrations and porosity parameters and additionally functionalized with hexamethylene diamine (PGME-HD) were tested as potential Cr(VI) oxyanion sorbents from aqueous solutions. Kinetics of Cr(VI) sorption was investigated in the temperature range 298-343 K and the results were fitted to chemical reaction and particle diffusion models. The Cr(VI) sorption obeys the pseudo-second-order model with definite influence of pore diffusion. A temperature rise promotes chromium removal, with a maximum experimental uptake capacity of 4.21 mmol g(-1) at 343 K for the sample with the highest amino group concentration. Equilibrium data were analysed with Langmuir, Freundlich and Temkin adsorption isotherm models. Thermodynamic parameters, i.e. Gibbs free energy (G(0)), enthalpy (H-0) and entropy change (S-0) and activation energy of sorption (E-a), were calculated. The Cr(VI) adsorption onto PGME-HD was found to be spontaneous and endothermic, with increased randomness in the system. Desorption experiments show that chromium anion sorption was reversible and the PGME-HD sample GMA 60 HD was easily regenerated with 0.1 mol L-1 NaOH up to 90% recovery in the fourth sorption/desorption cycle. In the fifth cycle, a substantial sorption loss of 37% was observed. (c) 2016 Society of Chemical Industryen
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/43009/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172062/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172018/RS//
dc.rightsrestrictedAccessen
dc.sourcePolymer Internationalen
dc.subjectmacroporous crosslinked copolymeren
dc.subjectCr(VI)en
dc.subjecthexamethylene diamineen
dc.subjectkinetic modelsen
dc.subjectthermodynamicsen
dc.titleNovel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutionsen
dc.typearticleen
dcterms.abstractМарковиц, Бојана М.; Стефановиц, Иван С.; Настасовиц, Aлександра Б.; Марковић Јелена; Оњиа, Aнтоније Е.; Пергал, Марија В.; Херцигоња, Радмила В.;
dc.citation.volume66
dc.citation.issue5
dc.citation.spage679
dc.citation.epage689
dc.identifier.wos000398731200009
dc.identifier.doi10.1002/pi.5306
dc.identifier.scopus2-s2.0-85007576495


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