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dc.creatorPanić, Vesna
dc.creatorMadžarević, Zeljka P.
dc.creatorVolkov-Husović, Tatjana
dc.creatorVeličković, Sava
dc.date.accessioned2021-03-10T12:15:28Z
dc.date.available2021-03-10T12:15:28Z
dc.date.issued2013
dc.identifier.issn1385-8947
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/2523
dc.description.abstractPoly(methacrylic acid) based hydrogels with neutralization degree of monomer of 0% (PMAA/0) and 80% (PMAA/80) were synthesized and their sorption potentials toward model cationic dye, basic yellow 28 (BY28), from aqueous solution, were investigated. FTIR and SEM analysis were conducted to confirm the structure and morphology of the sorbents. Investigation of the effect of the initial dye concentration, the solution pH, the sorbent mass and the temperature on sorption process, as well as the sorption kinetics and equilibrium studies were performed by batch technique. Sorption capacities of both sorbents showed to be highly sensitive to external conditions change, especially those affecting hydrogel swelling degree. Kinetic studies showed that the pseudo-first order kinetic model well fitted the experimental data and that sorption of BY28 onto PMAA hydrogels could be very well described with phase-boundary controlled models. Thermodynamical data revealed spontaneous endothermic processes. In case of PMAA/0 hydrogel physisorption was dominant, while in case of PMAA/80 hydrogel, both, the physisorption and chemisorption were presented. Langmuir, Freundlich and Dubinin-Radushkevich sorption isotherms were applied on equilibrium sorption data. The saturated sorption amount could reach up to 102 mg g(-1) and 157 mg g(-1) for PMAA/0 and PMAA/80 hydrogel, respectively. Image analysis proved to be useful method for analysis of uniformity of coloration along the hydrogel diameter. Both hydrogels displayed good properties in cationic dye removal, but higher sorption capacities, percentage of removed dye and significant acceleration of sorption of BY28 were accomplished by neutralizing the monomer up to 80%.en
dc.publisherElsevier Science Sa, Lausanne
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172062/RS//
dc.rightsrestrictedAccess
dc.sourceChemical Engineering Journal
dc.subjectDye sorptionen
dc.subjectPoly(methacrylic acid)en
dc.subjectHydrogelen
dc.subjectImage analysisen
dc.subjectSorption kinetic modelen
dc.titlePoly(methacrylic acid) based hydrogels as sorbents for removal of cationic dye basic yellow 28: Kinetics, equilibrium study and image analysisen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage204
dc.citation.other217: 192-204
dc.citation.rankaM21
dc.citation.spage192
dc.citation.volume217
dc.identifier.doi10.1016/j.cej.2012.11.081
dc.identifier.rcubconv_4093
dc.identifier.scopus2-s2.0-84871376480
dc.identifier.wos000316835600023
dc.type.versionpublishedVersion


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