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dc.creatorDrah, Abdusalam
dc.creatorTomić, Nataša
dc.creatorVelicić, Zorica
dc.creatorMarinković, Aleksandar
dc.creatorRadovanović, Željko
dc.creatorVeličković, Zlate
dc.creatorJančić-Heinemann, Radmila
dc.date.accessioned2021-03-10T13:21:15Z
dc.date.available2021-03-10T13:21:15Z
dc.date.issued2017
dc.identifier.issn0272-8842
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/3546
dc.description.abstractThe adsorption performance of three-dimensionally ordered macroporous (3DOM) gamma-alumina was investigated for enhanced Pb2+, Ni2+ and Cd2+ removal. The synthesis was based on a modified sol-gel method using a colloidal crystal template (CCT) method based on PMMA microspheres. The structure was characterized by means of FTIR spectroscopy and XRD analysis. The three-dimensional structure was examined by scanning electron microscopy, which enabled image analysis that showed significantly low shrinkage (8.77%) after calcination at 800 degrees C. The influential parameters, including contact time and adsorbent dosage, were investigated in a batch adsorption study. The adsorption equilibrium and kinetic data were found to be in agreement with the Freundlich isotherm for Pb2+ removal and the Dubinin-Radushkevich isotherm for Ni2+ and Cd2+ removal. The time-dependent adsorption was best described by a pseudo-second-order kinetic model and the Weber-Morris model. High adsorption capacities: 95.39, 23.32 and 25.39 mg/g were obtained for Pb2+, Cd2+ and Ni2+ removal at 45 degrees C, respectively. The existence of interconnected macroporous and mesoporous structures of highly ordered gamma-alumina enabled a higher adsorption capacity in comparison with literature data for others alumina-based adsorbents.en
dc.publisherElsevier Sci Ltd, Oxford
dc.relationinfo:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/34011/RS//
dc.rightsrestrictedAccess
dc.sourceCeramics International
dc.subjectAl2O3 - (D)en
dc.subjectPorosity - (B)en
dc.subjectCalcination - (A)en
dc.subjectAdsorptionen
dc.titleHighly ordered macroporous gamma-alumina prepared by a modified sol-gel method with a PMMA microsphere template for enhanced Pb2+, Ni2+ and Cd2+ removalen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage13827
dc.citation.issue16
dc.citation.other43(16): 13817-13827
dc.citation.rankaM21
dc.citation.spage13817
dc.citation.volume43
dc.identifier.doi10.1016/j.ceramint.2017.07.102
dc.identifier.rcubconv_5403
dc.identifier.scopus2-s2.0-85024369445
dc.identifier.wos000411299300100
dc.type.versionpublishedVersion


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