Magnetic carbon composites as regenerable and fully recoverable adsorbents: Performance on the removal of antidiabetic agent metformin hydrochloride

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dc.contributor.authorCavusoglu, Ferda Civan
dc.contributor.authorBayazit, Sahika Sena
dc.contributor.authorSecula, Marius Sebastian
dc.contributor.authorCagnon, Benoit
dc.date.accessioned2024-03-13T10:30:58Z
dc.date.available2024-03-13T10:30:58Z
dc.date.issued2021
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description.abstractThe present work describes three newly-prepared magnetic-carbon composites (M-CCs) applied as adsorbents. The M-CCs were prepared by the co-precipitation method, grafting Fe(II) and Fe(III) oxides onto the surface of different matrices: PAC, GNP and MWCNT in order to achieve M-PAC, M-GNP and M-MWCNT, respectively. The composites were characterized by Fourier Transform Infrared spectroscopy, X-ray Diffraction Spectroscopy. Scanning Electron Microscopy was used for characterization of M-MWCNTs, Transmission Electron Microscopy was used for characterization of M-GNP composites. Thermogravimetric analyses were performed for each of the three M-CCs. It is found that about 70% of M-CCs consist in Fe3O4 nanoparticles. M-CCs adsorption features and performance towards the removal of a pollutant model from aqueous solutions was established. They were tested for Metformin hydrochloride adsorption, a worldwide antidiabetic pharmaceutical agent. The parameters of adsorbent dose, adsorption duration, initial concentration of adsorbate solution, temperature, pH and co-existing ion concentration were considered as adsorption independent variables. The kinetic tests show that the Pseudo second order kinetic model (PSO) fit best the three-adsorption systems. M-GNP is the fastest adsorbent of the three (k(2) = 0.36 g/mg min). The three investigated adsorption systems obey the Langmuir isotherm model. Pinpointing M-GNP (q(m) = 8.83 mg/g) as the most efficient adsorbent in normal conditions, and M-MWCNT (q(m) = 26.17 mg/g at 318 K) at higher values of temperature. Acid conditions favor adsorption of Metformin hydrochloride onto M-MWCNT, alkaline for M-PAC, whereas M-GNP provides best performance under amphoteric conditions. Coexisting ions affected Metformin hydrochloride adsorption only in case of M-MWCNT and M-GNP. Desorption tests were also carried out by using phosphate buffer solution. M-GNP provides best desorption ratios, reaching nearly 66% of Metformin hydrochloride desorption after each use. (C) 2021 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.cherd.2021.01.034
dc.identifier.endpage452en_US
dc.identifier.issn0263-8762
dc.identifier.issn1744-3563
dc.identifier.scopus2-s2.0-85101985407en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage443en_US
dc.identifier.urihttps://doi.org/10.1016/j.cherd.2021.01.034
dc.identifier.urihttps://hdl.handle.net/20.500.12662/3632
dc.identifier.volume168en_US
dc.identifier.wosWOS:000632173500001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofChemical Engineering Research & Designen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectMetformin hydrochloride adsorptionen_US
dc.subjectMagnetic nanoparticlesen_US
dc.subjectGraphene nanoplateleten_US
dc.subjectMultiwalled carbon nanotubesen_US
dc.titleMagnetic carbon composites as regenerable and fully recoverable adsorbents: Performance on the removal of antidiabetic agent metformin hydrochlorideen_US
dc.typeArticleen_US

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