Azo dye-functionalized magnetic Fe3O4/polyacrylic acid nanoadsorbent for removal of lead (II) ions

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dc.contributor.authorSadak, Omer
dc.contributor.authorHackney, Robert
dc.contributor.authorSundramoorthy, Ashok K.
dc.contributor.authorYilmaz, Galip
dc.contributor.authorGunasekaran, Sundaram
dc.date.accessioned2024-10-04T18:58:37Z
dc.date.available2024-10-04T18:58:37Z
dc.date.issued2020
dc.departmentBayburt Üniversitesien_US
dc.description.abstractWe report the fabrication of a nanoadsorbent for the removal of heavy metals. The nanoadsorbent is comprised of ferric oxide (Fe3O4) magnetic nanoparticles (MNPs) covalently conjugated with polyacrylic acid (PAA) and further functionalized with an azo dye (Congo red, CR) using carbodiimide. This Fe3O4 core and PAA-CR shell system (MNP/PAA-CR) exhibited binding affinity towards various cations (Pb2+, Fe2+, Fe3+, Cd2+, and Cu2+) at room temperature. Using MNP/PAA-CR we studied its heavy metal removal effectiveness and kinetics targeting Pb2+ under various reactions conditions including time and pH. The Pb2+ removal efficiency and adsorption capacity were maximal at pH 6.5 and 45 min of reaction time, and the Pb2+ adsorption kinetics better fit a pseudo second-order model than a first-order model. The adsorption of Pb2+ by MNP/PAA-CR was also investigated by the so-called Langmuir and Freundlich isotherms, and the Langmuir isotherm predicted a maximum absorption of 195.3 mg.g-1. Our results further indicated that MNP/PAA-CR is potentially reusable after desorption of the adsorbed metal with only small decline in adsorption ability over five consecutive cycles of regeneration. © 2020 Elsevier B.V.en_US
dc.identifier.doi10.1016/j.enmm.2020.100380
dc.identifier.issn2215-1532
dc.identifier.scopus2-s2.0-85093666318en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.enmm.2020.100380
dc.identifier.urihttp://hdl.handle.net/20.500.12403/3917
dc.identifier.volume14en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier B.V.en_US
dc.relation.ispartofEnvironmental Nanotechnology, Monitoring and Managementen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCongo reden_US
dc.subjectHeavy metal removalen_US
dc.subjectNanoadsorbenten_US
dc.subjectWastewater treatmenten_US
dc.titleAzo dye-functionalized magnetic Fe3O4/polyacrylic acid nanoadsorbent for removal of lead (II) ionsen_US
dc.typeArticleen_US

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