Preparation and characterization of novel polysulfone-red mud composite capsules for the removal of fluoride from aqueous solutions

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dc.contributor.authorKazak, Omer
dc.contributor.authorTor, Ali
dc.contributor.authorAkin, Ilker
dc.contributor.authorArslan, Gulsin
dc.date.accessioned2024-02-23T14:16:46Z
dc.date.available2024-02-23T14:16:46Z
dc.date.issued2016
dc.departmentNEÜen_US
dc.description.abstractThis study is the first investigation on the encapsulation of red mud by a polysulfone matrix through a phase inversion process to obtain composite capsules for the removal of fluoride from aqueous solutions. This approach facilitates the use of red mud in batch and column sorption techniques because the polysulfone matrix renders efficient aqueous diffusivity. The produced polysulfone-red mud composite capsules (red mud@ PSF capsules) were characterized by using FT-IR, TGA, SEM and BET. The batch sorption experiments showed that the red mud@ PSF capsules prepared with a mass ratio of red mud to polysulfone (1 : 1, g : g) provided maximum removal at equilibrium pH between 3.2 and 4.7. The batch equilibrium was attained within 30 minutes and sorption behavior was governed by pseudo-second-order kinetics together with intra-particle diffusion. Isotherm analyses showed that the Freundlich and Redlich-Peterson isotherm models better represented the sorption data, which was confirmed by the Chi-square (chi(2)) statistical test. The capsules could be reused for at least two sorption-desorption cycles without significant change in their sorption efficiency. Batch and column experiments on a real mineral water sample fortified with fluoride (final concentration 10 mg L-1) showed that the red mud@ PSF capsules could be applied to real water samples to reduce the fluoride concentration below the limit value (1.5 mg L-1) recommended by the World Health Organization (WHO) for drinking water.en_US
dc.description.sponsorshipNecmettin Erbakan University Scientific Research Project Coordination Unit (BAP) [151219016]en_US
dc.description.sponsorshipThe authors would like to thank Necmettin Erbakan University Scientific Research Project Coordination Unit (BAP) for the financial support (Project number: 151219016).en_US
dc.identifier.doi10.1039/c6ra12055e
dc.identifier.endpage86681en_US
dc.identifier.issn2046-2069
dc.identifier.issue89en_US
dc.identifier.scopus2-s2.0-84987875325en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage86673en_US
dc.identifier.urihttps://doi.org/10.1039/c6ra12055e
dc.identifier.urihttps://hdl.handle.net/20.500.12452/12786
dc.identifier.volume6en_US
dc.identifier.wosWOS:000384322700116en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherRoyal Soc Chemistryen_US
dc.relation.ispartofRsc Advancesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subject[Keyword Not Available]en_US
dc.titlePreparation and characterization of novel polysulfone-red mud composite capsules for the removal of fluoride from aqueous solutionsen_US
dc.typeArticleen_US

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