dc.contributor.author | Akkaya, Recep | |
dc.date.accessioned | 2019-07-27T12:10:23Z | |
dc.date.accessioned | 2019-07-28T10:03:28Z | |
dc.date.available | 2019-07-27T12:10:23Z | |
dc.date.available | 2019-07-28T10:03:28Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 1385-8947 | |
dc.identifier.issn | 1873-3212 | |
dc.identifier.uri | https://dx.doi.org/10.1016/j.cej.2012.06.042 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12418/9042 | |
dc.description | WOS: 000309615800022 | en_US |
dc.description.abstract | We synthesized and characterized a novel composite, poly(acrylamide-expanded perlite) [P(AAm-EP)] and investigated its adsorptive features for Tb3+. We achieved the synthesis by using free-radical polymerization and a number of structural characterization methods, including scanning electron microscopy (SEM) and BET-porosity swelling tests. We successfully performed free-radical polymerization of acrylamide (AAm) over expanded perlite (EP). We cross-linked expanded perlite with acrylamide to enhance its chemical resistance. P(AAm-EP) composite has a specific surface area of 31.7 m(2)/g. We evaluated the composite of adsorptive features for Tb3+ in light of the dependency of the ion concentration, pH, temperature, time, and reusability. The composite was able to bind Tb3+ ions with strong chemical affinity. The adsorption results were fitted to the classical Langmuir, Freundlich, and Dubinin-Radushkevich (D-R) sorption models. The composite was used in the removal studies of the Tb3+ ions. The adsorption of Tb3+ ions increased as the pH increased and reached a plateau value at around pH 3.0. Variations in the Delta H and Delta S values showed that the sorption process was spontaneous (Delta G < 0), endothermic (Delta H > 0), and had increased entropy (Delta S > 0). We also found that the adsorption kinetics followed the pseudo-second order model and that the rate-controlling step was chemical adsorption. We were able to reuse the composites 5 sequential times. (C) 2012 Elsevier B.V. All rights reserved. | en_US |
dc.description.sponsorship | Research Fund of Cumhuriyet University (CUBAP) [F-321] | en_US |
dc.description.sponsorship | This work was supported by The Research Fund of Cumhuriyet University (CUBAP, Project no: F-321) to which the author is grateful. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | ELSEVIER SCIENCE SA | en_US |
dc.relation.isversionof | 10.1016/j.cej.2012.06.042 | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | Adsorption | en_US |
dc.subject | Composite | en_US |
dc.subject | Expanded perlite | en_US |
dc.subject | Copolymerization | en_US |
dc.subject | Synthesis | en_US |
dc.subject | Terbium | en_US |
dc.title | Synthesis and characterization of a new low-cost composite for the adsorption of rare earth ions from aqueous solutions | en_US |
dc.type | article | en_US |
dc.relation.journal | CHEMICAL ENGINEERING JOURNAL | en_US |
dc.contributor.department | Cumhuriyet Univ, Vocat Sch Hlth Serv, TR-58140 Sivas, Turkey | en_US |
dc.contributor.authorID | AKKAYA, Recep -- 0000-0002-3477-7198 | en_US |
dc.identifier.volume | 200 | en_US |
dc.identifier.endpage | 191 | en_US |
dc.identifier.startpage | 186 | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |