Kinetics and thermodynamics of the adsorption of some dyestuffs and p-nitrophenol by chitosan and MCM-chitosan from aqueous solution

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dc.contributor.authorUzun, I
dc.contributor.authorGüzel, F
dc.date.accessioned2024-04-24T16:15:00Z
dc.date.available2024-04-24T16:15:00Z
dc.date.issued2004
dc.departmentDicle Üniversitesien_US
dc.description.abstractThe effect of initial concentration, temperature, and shaking rate on the adsorption of three dyestuffs [orange II (O-II), crystal violet (CV), and reactive blue 5 (RB5)] and an ideal adsorbate, p-nitrophenol (PNP), by chitosan (Sigma C-3646) and the effect of temperature on the adsorption of O-II and CV by monocarboxymethylated chitosan (MCM-chitosan) were investigated. Kinetic data obtained for the adsorption of each dyestuff and PNP by chitosan and of O-II and CV by MCM-chitosan at different temperatures were applied to the Lagergren equation, and adsorption rate constants (k(ads)) at these temperatures were determined. These rate constants related to the adsorption of O-II and RB5 by chitosan and of O-II by MCM-chitosan were applied to the Arrhenius equation, and activation energies (E-a) were determined. In addition, the isotherms for adsorption, at different temperatures, of each dyestuff and PNP by chitosan and of O-II and CV by MCM-chitosan were also determined. These isothermal data were applied to linear forms of isotherm equations that they fit, and isotherm constants were calculated. Because the isotherm curves obtained for the adsorption of O-II and CV by chitosan and of CV by MCM-chitosan fit the Langmuir adsorption isotherm, b constants were applied to thermodynamic equations, and thermodynamic parameters (DeltaG, DeltaH, and DeltaS) were calculated. Lastly, chitosan and MCM-chitosan were compared with respect to the ability to take up the dyestuffs and PNP. (C) 2004 Elsevier Inc. All rights reserved.en_US
dc.identifier.doi10.1016/j.jcis.2004.02.022
dc.identifier.endpage412en_US
dc.identifier.issn0021-9797
dc.identifier.issue2en_US
dc.identifier.pmid15144811
dc.identifier.scopus2-s2.0-2342657876
dc.identifier.scopusqualityQ1
dc.identifier.startpage398en_US
dc.identifier.urihttps://doi.org/10.1016/j.jcis.2004.02.022
dc.identifier.urihttps://hdl.handle.net/11468/15589
dc.identifier.volume274en_US
dc.identifier.wosWOS:000221603100006
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoenen_US
dc.publisherAcademic Press Inc Elsevier Scienceen_US
dc.relation.ispartofJournal of Colloid and Interface Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectChitosanen_US
dc.subjectMcm-Chitosanen_US
dc.subjectDyestuff Adsorption From Aqueous Solution Adsorption Kinetics And Thermodynamicsen_US
dc.subjectSpecific Surface Areaen_US
dc.titleKinetics and thermodynamics of the adsorption of some dyestuffs and p-nitrophenol by chitosan and MCM-chitosan from aqueous solutionen_US
dc.titleKinetics and thermodynamics of the adsorption of some dyestuffs and p-nitrophenol by chitosan and MCM-chitosan from aqueous solution
dc.typeArticleen_US

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