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Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions
dc.creator | Marković, Bojana | |
dc.creator | Stefanović, Ivan | |
dc.creator | Hercigonja, Radmila | |
dc.creator | Pergal, Marija | |
dc.creator | Markovic, Jelena P. | |
dc.creator | Onjia, Antonije E. | |
dc.creator | Nastasović, Aleksandra | |
dc.date.accessioned | 2019-01-30T17:55:58Z | |
dc.date.available | 2019-01-30T17:55:58Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 0959-8103 | |
dc.identifier.uri | https://cer.ihtm.bg.ac.rs/handle/123456789/2223 | |
dc.description.abstract | Macroporous 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. | en |
dc.publisher | Wiley, Hoboken | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/43009/RS// | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172062/RS// | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172018/RS// | |
dc.rights | restrictedAccess | |
dc.source | Polymer International | |
dc.subject | macroporous crosslinked copolymer | en |
dc.subject | Cr(VI) | en |
dc.subject | hexamethylene diamine | en |
dc.subject | kinetic models | en |
dc.subject | thermodynamics | en |
dc.title | Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions | en |
dc.type | article | |
dc.rights.license | ARR | |
dcterms.abstract | Оњиа, Aнтоније Е.; Херцигоња, Радмила В.; Стефановић, Иван; Настасовић, Aлександра; Пергал, Марија; Марковић, Бојана; Марковиц, Јелена П.; | |
dc.citation.volume | 66 | |
dc.citation.issue | 5 | |
dc.citation.spage | 679 | |
dc.citation.epage | 689 | |
dc.citation.other | 66(5): 679-689 | |
dc.citation.rank | M22 | |
dc.identifier.doi | 10.1002/pi.5306 | |
dc.identifier.scopus | 2-s2.0-85007576495 | |
dc.identifier.wos | 000398731200009 | |
dc.type.version | publishedVersion |