Separation of chromium (VI) from its liquid solution using new montmorillonite supported with amine based solvent

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dc.contributor.authorUslu, Hasan
dc.contributor.authorDatta, Dipaloy
dc.contributor.authorAzizian, Saeid
dc.date.accessioned2024-03-13T10:35:04Z
dc.date.available2024-03-13T10:35:04Z
dc.date.issued2016
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description.abstractThe present work deals with the study of Cr (VI) adsorption onto montmorillonite (MM) and modified montmorillonite (MMT). The modification is done by using an amine based solvent, trioctylamine (TOA). Equilibrium and kinetic experiments are carried out to determine the effect of adsorbent dose (w, 0.05 g to 0.3 g for MM, 0.01 g to 0.06 g for MMT), initial Cr (VI) concentration (C-0, 25 mg L-1 to 125 mg L-1), pH (I to 9), and contact time (t, 10 min to 100 min) on the capacity of both the adsorbents. With an increase in the adsorbent dosage, the uptake capacity of MM and MMT for Cr (VI) is found to decrease but with an enhancement in the recovery efficiency. The optimum dosage of MM and MMT is proposed to be 02 g and 0.02 g, respectively. A better adsorption of Cr (VI) is observed at low pH values of aqueous solution, and is decreased with an increase in the value of pH. In the kinetic experiments, the percentage removal of Cr (VI) reaches to a constant value of 70.68% with MM (0.2 g) and 33.92% with MMT (0.02 g) after 80 min. Equilibrium data are analysed by using Langmuir and Freundlich isotherm models. Kinetic models such as pseudo-first order (PFO) and pseudo-second order (PSO) are used to predict the kinetics of the adsorption process by MM and MMT for the Cr (VI) removal. (C) 2016 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.molliq.2016.01.023
dc.identifier.endpage453en_US
dc.identifier.issn0167-7322
dc.identifier.issn1873-3166
dc.identifier.scopus2-s2.0-84955162388en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage449en_US
dc.identifier.urihttps://doi.org/10.1016/j.molliq.2016.01.023
dc.identifier.urihttps://hdl.handle.net/20.500.12662/4234
dc.identifier.volume215en_US
dc.identifier.wosWOS:000371559600052en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofJournal Of Molecular Liquidsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectChromium (VI)en_US
dc.subjectEquilibriumen_US
dc.subjectKineticsen_US
dc.subjectMontmorilloniteen_US
dc.subjectTrioctylamineen_US
dc.titleSeparation of chromium (VI) from its liquid solution using new montmorillonite supported with amine based solventen_US
dc.typeArticleen_US

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