Adsorption isotherm and kinetic modelling of ?-galactosidase immobilization onto a basic resin (Duolite A568)

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dc.authorscopusid36080808100
dc.authorscopusid12447023300
dc.authorscopusid7003693899
dc.contributor.authorGürdas S.
dc.contributor.authorGüleç H.A.
dc.contributor.authorMutlu M.
dc.date.accessioned2024-06-12T10:28:11Z
dc.date.available2024-06-12T10:28:11Z
dc.date.issued2011
dc.description.abstractThis study aimed to determine adsorption characteristics of Aspergillus oryzae ?-galactosidase onto a basic resin Duolite A568. The experimental data were analyzed by the Langmuir and Freundlich isotherm to describe the adsorption equilibrium. The equilibrium data fitted well with the Langmuir model which confirmed that the Duolite A568 was favourable for adsorption of ?-galactosidase enzyme under conditions studied. The maximum adsorption capacity was found to be (5.1 ± 0.49) × 10-2 mg/g at 35 °C. The kinetic data were fitted to pseudo-second-order kinetic model of Ho by linear and non-linear regression methods. The enthalpy change (?H°), the entropy change (?S°) and the Gibb's free energy change (?G°) for the sorption processes were calculated to be 15.5 kJ/mol, 30.4 J/mol K and -9.4 kJ/mol, respectively. The positive ?H° value indicated that the adsorption process was endothermic. ?G° and ?S° values showed that adsorption process occurred by physical mechanism and spontaneously.en_US
dc.identifier.endpage1054en_US
dc.identifier.issn0970-7077
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-79951823672en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.startpage1049en_US
dc.identifier.urihttps://hdl.handle.net/20.500.14551/17124
dc.identifier.volume23en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherChemical Publishing Co.en_US
dc.relation.ispartofAsian Journal of Chemistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectActivation Energy; Adsorption Kinetic; Duolite A568; Freundlich And Langmuir Isotherms; ?-Galactosidaseen_US
dc.titleAdsorption isotherm and kinetic modelling of ?-galactosidase immobilization onto a basic resin (Duolite A568)en_US
dc.typeArticleen_US

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