Effects of pretreatment on physical and ion exchange properties of natural clinoptilolite

Inglezakis, VJ; Papadeas, CD; Loizidou, MD; Grigoropoulou, HP

dc.contributor.author	Inglezakis, VJ	en
dc.contributor.author	Papadeas, CD	en
dc.contributor.author	Loizidou, MD	en
dc.contributor.author	Grigoropoulou, HP	en
dc.date.accessioned	2014-03-01T01:16:31Z
dc.date.available	2014-03-01T01:16:31Z
dc.date.issued	2001	en
dc.identifier.issn	0959-3330	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14068
dc.subject	Diffusion coefficients	en
dc.subject	Effective capacity	en
dc.subject	Ion exchange	en
dc.subject	Zeolities	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	aluminum oxide	en
dc.subject.other	calcium oxide	en
dc.subject.other	clinoptilolite	en
dc.subject.other	ion	en
dc.subject.other	iron oxide	en
dc.subject.other	lead	en
dc.subject.other	magnesium oxide	en
dc.subject.other	natural product	en
dc.subject.other	nitric acid	en
dc.subject.other	silicon dioxide	en
dc.subject.other	sodium chloride	en
dc.subject.other	sodium hydroxide	en
dc.subject.other	unclassified drug	en
dc.subject.other	water	en
dc.subject.other	zeolite	en
dc.subject.other	batch process	en
dc.subject.other	effluent treatment	en
dc.subject.other	ion exchange	en
dc.subject.other	physical property	en
dc.subject.other	zeolite	en
dc.subject.other	aqueous solution	en
dc.subject.other	article	en
dc.subject.other	chemical modification	en
dc.subject.other	controlled study	en
dc.subject.other	crystal structure	en
dc.subject.other	diffusion coefficient	en
dc.subject.other	ion exchange	en
dc.subject.other	measurement	en
dc.subject.other	methodology	en
dc.subject.other	solid state	en
dc.subject.other	waste water management	en
dc.subject.other	X ray diffraction	en
dc.subject.other	Chemistry, Physical	en
dc.subject.other	Crystallization	en
dc.subject.other	Diffusion	en
dc.subject.other	Hydrogen-Ion Concentration	en
dc.subject.other	Ion Exchange	en
dc.subject.other	Kinetics	en
dc.subject.other	Mathematics	en
dc.subject.other	Nitric Acid	en
dc.subject.other	Sodium Chloride	en
dc.subject.other	Sodium Hydroxide	en
dc.subject.other	Solutions	en
dc.subject.other	Waste Management	en
dc.subject.other	Water Pollutants	en
dc.subject.other	Zeolites	en
dc.title	Effects of pretreatment on physical and ion exchange properties of natural clinoptilolite	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/09593332208618308	en
heal.identifier.secondary	http://dx.doi.org/10.1080/09593332208618308	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	Four pretreatment procedures have been applied to natural clinoptilolite to establish the influence of the pretreatment process on the properties of the material under investigation. Modification of material properties is imposed for its use in wastewater treatment via ion exchange processes. Batch pretreatment procedures as well as continuous flow column have been studied by using sodium chloride, sodium hydroxide and nitric acid solutions in deionized water. Measurements of the effective opacity, the diffusion coefficient in the solid state and examination of the crystal structure have been employed to assess the effect of each specific pretreatment on the material under test. The effective capacity is improved in all cases, by a factor of 2.4 to 3.6, while the diffusion coefficient values depend strongly on the type of pretreatment used and fall in the range of 0.03-1.37x10(-8) cm(2)s(-2) at 20 degreesC. The crystal structure remains unaltered as evidenced by XRD measurements.	en
heal.publisher	SELPER LTD, PUBLICATIONS DIV	en
heal.journalName	Environmental Technology	en
dc.identifier.doi	10.1080/09593332208618308	en
dc.identifier.isi	ISI:000167133500009	en
dc.identifier.volume	22	en
dc.identifier.issue	1	en
dc.identifier.spage	75	en
dc.identifier.epage	82	en