Dissolution of aluminosilicate minerals and by-products in alkaline media

Panagiotopoulou, Ch; Kontori, E; Perraki, Th; Kakali, G

dc.contributor.author	Panagiotopoulou, Ch	en
dc.contributor.author	Kontori, E	en
dc.contributor.author	Perraki, Th	en
dc.contributor.author	Kakali, G	en
dc.date.accessioned	2014-03-01T01:26:10Z
dc.date.available	2014-03-01T01:26:10Z
dc.date.issued	2007	en
dc.identifier.issn	0022-2461	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17948
dc.subject	Alkali Metals	en
dc.subject	Fly Ash	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Alkali metals	en
dc.subject.other	Byproducts	en
dc.subject.other	Dissolution	en
dc.subject.other	Fourier transform infrared spectroscopy	en
dc.subject.other	Kaolin	en
dc.subject.other	Leaching	en
dc.subject.other	X ray diffraction	en
dc.subject.other	Alkaline solutions	en
dc.subject.other	Metakaolin	en
dc.subject.other	Synchronized leaching	en
dc.subject.other	Aluminosilicates	en
dc.title	Dissolution of aluminosilicate minerals and by-products in alkaline media	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s10853-006-0531-8	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s10853-006-0531-8	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	In this work, the leaching behaviour of six aluminosilicate industrial minerals and by-products (kaolin, metakaolin, fly ash, natural pozzolana from Milos, zeolite and furnace slag) in alkaline solutions is investigated. The variables studied are the kind of alkali metal (K, Na), the concentration of the alkaline solution (2.5, 5 and 10 M) and the time of dissolution (5, 10 and 24 h). The solid residue after the leaching was examined by means of XRD and FTIR. As it is concluded, the leaching ability of Al and Si is according to the following descending order: Metakaolin > Zeolite > Slag > Fly Ash > Pozzolana > Kaolin. The extent of dissolution is higher in NaOH than in KOH solutions, especially when the most reactive materials are concerned. Finally, Si and Al seem to have a synchronized leaching behaviour in both alkaline solutions. © Springer Science+Business Media, LLC 2007.	en
heal.publisher	SPRINGER	en
heal.journalName	Journal of Materials Science	en
dc.identifier.doi	10.1007/s10853-006-0531-8	en
dc.identifier.isi	ISI:000246387700007	en
dc.identifier.volume	42	en
dc.identifier.issue	9	en
dc.identifier.spage	2967	en
dc.identifier.epage	2973	en