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Amino-modified hollow alumina spheres: effective adsorbent for Cd2+, Pb2+, As(V), and diclofenac removal
dc.creator | Nikolić, Vesna | |
dc.creator | Tomić, Nataša | |
dc.creator | Bugarcic, Mladen | |
dc.creator | Sokić, Miroslav | |
dc.creator | Marinković, Aleksandar | |
dc.creator | Veličković, Zlate | |
dc.creator | Kamberović, Željko | |
dc.date.accessioned | 2022-03-04T11:26:50Z | |
dc.date.available | 2022-03-04T11:26:50Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 0944-1344 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4966 | |
dc.description.abstract | A simple sol-gel method and external gelatinization method of hollow alumina spheres synthesis were developed in this study. The spheres were modified with polyethyleneimine (PEI) producing PEI-Al2O3 via (3-glycidyloxypropyl)trimethoxy-silane, GLYMO, linker. Characterization results, obtained using XRD and SEM microscopy revealed spherical geometry with a hollow core of PEI-Al2O3 adsorbent. Introduction of a large number of the amino group, 6.9 mmol g(-1), contributes to achieving high adsorption capacities, q(m), of 95.6, 124.9, 61.3, and 125.9 mg g(-1) for Cd2+, Pb2+, As(V), and DCF, respectively, which is obtained by using the Langmuir model. Thermodynamic studies indicated feasible adsorption and higher spontaneity with temperature increase. The kinetic study conveniently modeled using pseudo-second-order (PSO) and Weber-Morris kinetic model, as well as single resistance mass transfer model, indicated a change of the contribution of diffusional processes during adsorption with a dominance of intra-particle diffusion. The fixed-bed column adsorption data, fitted using Bohart-Adams, Clark, Yoon-Nelson, and Thomas models, showed lower capacity in comparison to batch study, and thus clear potential applicability of PEI-Al2O3 was deduced even at a high loading of feed water. | en |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200135/RS// | |
dc.rights | restrictedAccess | |
dc.source | Environmental Science and Pollution Research | |
dc.subject | Alumina spheres | en |
dc.subject | External gelatinization | en |
dc.subject | Adsorbent | en |
dc.subject | Cadmium | en |
dc.subject | Arsenic | en |
dc.subject | Lead | en |
dc.subject | Diclofenac | en |
dc.subject | Kinetic study | en |
dc.title | Amino-modified hollow alumina spheres: effective adsorbent for Cd2+, Pb2+, As(V), and diclofenac removal | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 27192 | |
dc.citation.issue | 21 | |
dc.citation.other | 28(21): 27174-27192 | |
dc.citation.rank | M22 | |
dc.citation.spage | 27174 | |
dc.citation.volume | 28 | |
dc.identifier.doi | 10.1007/s11356-020-12157-1 | |
dc.identifier.pmid | 33507501 | |
dc.identifier.scopus | 2-s2.0-85099916787 | |
dc.identifier.wos | 000612599600022 | |
dc.type.version | publishedVersion |