Adsorption of Cr(VI) onto PEI immobilized acrylate-based magnetic beads: Isotherms, kinetics and thermodynamics study

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dc.contributor.authorBayramoglu, Guelay
dc.contributor.authorArica, M. Yakup
dc.date.accessioned2020-06-25T17:44:38Z
dc.date.available2020-06-25T17:44:38Z
dc.date.issued2008
dc.departmentKırıkkale Üniversitesi
dc.description.abstractMagnetic poly(GMA-EGDMA) beads were prepared from glycidylmetharylate (GMA) and ethyleneglycol dimethacrylate (EGDMA) in the presence of Fe3O4 nano-powder via suspension polymerization. After polymerization, the magnetic beads were coated with polyethyleneinnine (PEI). Elemental analysis of PEI immobilized beads for the free amine group content was estimated as 258.8 mu mol/g polymer. The magnetic beads were characterized by surface area measurement, electron spin resonance (ESR), and scanning electron microscopy (SEM). ESR data revealed that the beads were highly super-paramagnetic. The magnetic beads were used for the removal of Cr(VI) ions from aqueous solutions in batch mode. Adsorption equilibrium was established in about 120 min. The maximum adsorption of Cr(VI) on the magnetic beads was observed at around pH 2.0. The maximum adsorption capacity of the magnetic beads was 137.7 mg/g. The effects of adsorbent dosage, ionic strength and temperature have been also reported. (C) 2007 Elsevier B.V. All rights reserved.en_US
dc.identifier.citationclosedAccessen_US
dc.identifier.doi10.1016/j.cej.2007.07.068
dc.identifier.endpage28en_US
dc.identifier.issn1385-8947
dc.identifier.issn1873-3212
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-41949105084
dc.identifier.scopusqualityQ1
dc.identifier.startpage20en_US
dc.identifier.urihttps://doi.org/10.1016/j.cej.2007.07.068
dc.identifier.urihttps://hdl.handle.net/20.500.12587/4157
dc.identifier.volume139en_US
dc.identifier.wosWOS:000256002000004
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Saen_US
dc.relation.ispartofChemical Engineering Journal
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectmagnetic beadsen_US
dc.subjectPEIen_US
dc.subjectadsorptionen_US
dc.subjectheavy metalen_US
dc.subjectCr(VI)en_US
dc.subjectadsorption modellingen_US
dc.subjectkinetic characterizationen_US
dc.titleAdsorption of Cr(VI) onto PEI immobilized acrylate-based magnetic beads: Isotherms, kinetics and thermodynamics studyen_US
dc.typeArticle

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