An aluminum pillared montmorillonite with fast uptake of strontium and cesium from aqueous solutions

Karamanis, DT; Aslanoglou, XA; Assimakopoulos, PA; Gangas, NH; Pakou, AA; Papayannakos, NG

dc.contributor.author	Karamanis, DT	en
dc.contributor.author	Aslanoglou, XA	en
dc.contributor.author	Assimakopoulos, PA	en
dc.contributor.author	Gangas, NH	en
dc.contributor.author	Pakou, AA	en
dc.contributor.author	Papayannakos, NG	en
dc.date.accessioned	2014-03-01T01:12:36Z
dc.date.available	2014-03-01T01:12:36Z
dc.date.issued	1997	en
dc.identifier.issn	0009-8604	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12163
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0031251926&partnerID=40&md5=fa9499df795f24ca45e15add20f326aa	en
dc.subject	Cation Exchange Capacity	en
dc.subject	Delamination	en
dc.subject	Pillared Clay	en
dc.subject	Radiocesium	en
dc.subject	Radiostrontium	en
dc.subject	Uptake	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.classification	Mineralogy	en
dc.subject.classification	Soil Science	en
dc.subject.classification	Water Resources	en
dc.subject.other	Cesium	en
dc.subject.other	Grain size and shape	en
dc.subject.other	Ion exchange	en
dc.subject.other	Low temperature drying	en
dc.subject.other	Porosity	en
dc.subject.other	Reaction kinetics	en
dc.subject.other	Solutions	en
dc.subject.other	Strontium	en
dc.subject.other	X ray diffraction analysis	en
dc.subject.other	Pillared montmorillonite	en
dc.subject.other	Clay minerals	en
dc.subject.other	aluminium	en
dc.subject.other	cation exchange capacity	en
dc.subject.other	montmorillonite	en
dc.subject.other	pillared clay	en
dc.subject.other	strontium	en
dc.title	An aluminum pillared montmorillonite with fast uptake of strontium and cesium from aqueous solutions	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	The uptake of Sr and Cs by 2 types of aluminum pillared layered clays (Al-PILC), a reference sample (AZA) and a specially tailored sample (FRAZA), were investigated. The AZA sample was prepared from air-dried precursors and the FRAZA sample from freeze-dried precursors. X-ray diffraction (XRD), pore and grain size measurements revealed that freeze-drying leads to a very fine-grained material with substantial mesoporosity. In contrast, air-drying results in coarse grains and an essentially microporous material. Four different methods were tested for restoring the cation exchange capacity (CEC) of the prepared PILCs. The most effective method proved to be exposing the material to ammonia fumes, then soaking it in a NaCl solution at pH = 10. Strontium and Cs kinetic experiments were carried out with PILCs after restoring their CEC by this method. The results revealed 1 fast uptake component in both materials but with different relaxation times for each PILC.	en
heal.publisher	CLAY MINERALS SOCIETY	en
heal.journalName	Clays and Clay Minerals	en
dc.identifier.isi	ISI:A1997YJ80800009	en
dc.identifier.volume	45	en
dc.identifier.issue	5	en
dc.identifier.spage	709	en
dc.identifier.epage	717	en