Applicability of simplified models for the estimation of ion exchange diffusion coefficients in zeolites

Inglezakis, VJ; Grigoropoulou, HP

dc.contributor.author	Inglezakis, VJ	en
dc.contributor.author	Grigoropoulou, HP	en
dc.date.accessioned	2014-03-01T01:16:09Z
dc.date.available	2014-03-01T01:16:09Z
dc.date.issued	2001	en
dc.identifier.issn	0021-9797	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13951
dc.subject	Clinoptilolite	en
dc.subject	Diffusion coefficients	en
dc.subject	Ion exchange	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.other	Approximation theory	en
dc.subject.other	Diffusion in solids	en
dc.subject.other	Ion exchange	en
dc.subject.other	Mathematical models	en
dc.subject.other	Isotopic exchange	en
dc.subject.other	Zeolites	en
dc.subject.other	lead	en
dc.subject.other	sodium ion	en
dc.subject.other	zeolite	en
dc.subject.other	analytic method	en
dc.subject.other	article	en
dc.subject.other	diffusion coefficient	en
dc.subject.other	ion exchange	en
dc.subject.other	liquid	en
dc.subject.other	mathematical model	en
dc.subject.other	priority journal	en
dc.subject.other	solid	en
dc.title	Applicability of simplified models for the estimation of ion exchange diffusion coefficients in zeolites	en
heal.type	journalArticle	en
heal.identifier.primary	10.1006/jcis.2000.7304	en
heal.identifier.secondary	http://dx.doi.org/10.1006/jcis.2000.7304	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	The applicability of simplified models for the determination of ion exchange diffusion coefficients in zeolites is examined. The simplified models examined are Vermeulen's, Paterson's, and Nernst-Plank's approximations for isotopic and ion exchange processes, used in ion exchange systems analysis. Parameter analysis indicates the limits for fractional attainment of equilibrium U(t), the ratio of exchangeable ions in liquid to solid phase (w), and the ratio of surface diffusion coefficients of exchangeable ions (a), all clearly inter-related, within which the above-mentioned simplified models can be successfully used. Studies of the applicability of the isotopic exchange simplified models to experimental data for batch-type Na+-Pb2+ exchange on clinoptilolite confirm the parameter analysis conducted. (C) 2001 Academic Press.	en
heal.publisher	ACADEMIC PRESS INC	en
heal.journalName	Journal of Colloid and Interface Science	en
dc.identifier.doi	10.1006/jcis.2000.7304	en
dc.identifier.isi	ISI:000166843300021	en
dc.identifier.volume	234	en
dc.identifier.issue	2	en
dc.identifier.spage	434	en
dc.identifier.epage	441	en