Kinetics of diffusion-controlled adsorption of adenine and adenosine in a carboxymethyl diaminoethane PVC-mediated column system

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dc.contributor.authorAyar, Ahmet
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2015
dc.departmentNiğde ÖHÜ
dc.description.abstractThe adsorption kinetics of adenine and adenosine on a ligand-exchange matrix, carboxymethyl diaminoethane poly(vinyl chloride) in cobalt form (cobalt-CMEDA-PVC), have been studied in a fixed-bed column system. The initial ligand concentrations ranged between 1.25x10(-5) and 2.0x10(-4) mol L-1. The kinetic studies were carried out spectrophotometrically, in order to determine the rate-controlling step of the adsorption. The kinetic data of the single-component systems were acquired from the breakthrough curves of the ligands on the basis of the equivalent points method. In this study, the homogeneous diffusion model was adapted to a fixed-bed column system to describe the differentiation in the ligand concentration of the effluent, beginning from breakthrough point as a function of time. The results obtained for the adsorption kinetics indicated that the diffusion step plays a significant role in the adsorption kinetics of the ligands, due to the fact that the adsorption performance was strongly affected by the initial concentration of ligands.
dc.identifier.doi10.3184/146867815X14199388748264
dc.identifier.endpage58
dc.identifier.issn1468-6783
dc.identifier.issn1471-406X
dc.identifier.issue1
dc.identifier.startpage48
dc.identifier.urihttps://dx.doi.org/10.3184/146867815X14199388748264
dc.identifier.urihttps://hdl.handle.net/11480/4064
dc.identifier.volume40
dc.identifier.wosWOS:000349583900004
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.institutionauthorAyar, Ahmet
dc.language.isoen
dc.publisherSCIENCE REVIEWS 2000 LTD
dc.relation.ispartofPROGRESS IN REACTION KINETICS AND MECHANISM
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectadenine
dc.subjectadenosine
dc.subjectrate-controlling
dc.subjectstep
dc.subjectbreakthrough curve
dc.subjectligand-exchange
dc.subjectequivalent points method
dc.titleKinetics of diffusion-controlled adsorption of adenine and adenosine in a carboxymethyl diaminoethane PVC-mediated column system
dc.typeArticle

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