dc.creator | Drah, Abdusalam | |
dc.creator | Tomić, Nataša | |
dc.creator | Velicić, Zorica | |
dc.creator | Marinković, Aleksandar | |
dc.creator | Radovanović, Željko | |
dc.creator | Veličković, Zlate | |
dc.creator | Jančić-Heinemann, Radmila | |
dc.date.accessioned | 2021-03-10T13:21:15Z | |
dc.date.available | 2021-03-10T13:21:15Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 0272-8842 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3546 | |
dc.description.abstract | The 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.publisher | Elsevier Sci Ltd, Oxford | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/34011/RS// | |
dc.rights | restrictedAccess | |
dc.source | Ceramics International | |
dc.subject | Al2O3 - (D) | en |
dc.subject | Porosity - (B) | en |
dc.subject | Calcination - (A) | en |
dc.subject | Adsorption | en |
dc.title | Highly ordered macroporous gamma-alumina prepared by a modified sol-gel method with a PMMA microsphere template for enhanced Pb2+, Ni2+ and Cd2+ removal | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 13827 | |
dc.citation.issue | 16 | |
dc.citation.other | 43(16): 13817-13827 | |
dc.citation.rank | aM21 | |
dc.citation.spage | 13817 | |
dc.citation.volume | 43 | |
dc.identifier.doi | 10.1016/j.ceramint.2017.07.102 | |
dc.identifier.scopus | 2-s2.0-85024369445 | |
dc.identifier.wos | 000411299300100 | |
dc.type.version | publishedVersion | |