Production of synthetic zeolites from lignite - Calcareous Greek fly ashes and their potential for metals and metalloids retention

Moutsatsou, A; Protonotarios, V

dc.contributor.author	Moutsatsou, A	en
dc.contributor.author	Protonotarios, V	en
dc.date.accessioned	2014-03-01T02:50:52Z
dc.date.available	2014-03-01T02:50:52Z
dc.date.issued	2006	en
dc.identifier.issn	17433541	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35166
dc.subject	Fly ash	en
dc.subject	Metalloids	en
dc.subject	Metals	en
dc.subject	Retention mechanisms	en
dc.subject	Zeolites	en
dc.subject.other	conference proceeding	en
dc.subject.other	fly ash	en
dc.subject.other	lignite	en
dc.subject.other	metal	en
dc.subject.other	morphology	en
dc.subject.other	soil pollution	en
dc.subject.other	zeolite	en
dc.subject.other	Eurasia	en
dc.subject.other	Europe	en
dc.subject.other	Greece	en
dc.subject.other	Southern Europe	en
dc.title	Production of synthetic zeolites from lignite - Calcareous Greek fly ashes and their potential for metals and metalloids retention	en
heal.type	conferenceItem	en
heal.identifier.primary	10.2495/WM060061	en
heal.identifier.secondary	http://dx.doi.org/10.2495/WM060061	en
heal.publicationDate	2006	en
heal.abstract	The current state of the art focuses on the production of synthetic zeolites from lignite - calcareous fly ashes. The synthetic minerals are produced by the hydrothermal treatment of Greek fly ashes originating from Ptolemais and Megalopolis Power Plants in Greece. The products are examined in terms of their mineralogical composition, for the formation of known zeolites, morphology, thermal behavior, cation exchange capacity, pH, porosity and specific surface area. Zeolitic products, along with untreated fly ash, are investigated for their potential of retaining heavy metals from liquid wastes. The mechanisms of metal retention by zeolites in artificial solutions including lead, zinc, copper, arsenic and cadmium were examined. Solutions including the same pollutants, mobilized from a contaminated soil, utilizing selected solvents were produced. Results revealed the capability of zeolitic materials and fly ashes to retain metals in significant concentrations. Furthermore, a number of different retention mechanisms are developed, including ion exchange, surface adsorption and precipitation of metals.	en
heal.journalName	WIT Transactions on Ecology and the Environment	en
dc.identifier.doi	10.2495/WM060061	en
dc.identifier.volume	92	en
dc.identifier.spage	49	en
dc.identifier.epage	56	en