Remediation of soils polluted by industrial activities utilizing hydrothermally treated calcareous fly ashes

Moutsatsou, A; Karathanasis, A; Protonotarios, V

dc.contributor.author	Moutsatsou, A	en
dc.contributor.author	Karathanasis, A	en
dc.contributor.author	Protonotarios, V	en
dc.date.accessioned	2014-03-01T02:49:54Z
dc.date.available	2014-03-01T02:49:54Z
dc.date.issued	2004	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34773
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-12344274574&partnerID=40&md5=40f500fecc8c0c51940645d0472948af	en
dc.subject	Alkaline activation	en
dc.subject	Lignite fly ash	en
dc.subject	Metalloids	en
dc.subject	Metals	en
dc.subject	Soil pollution	en
dc.subject	Soil washing	en
dc.subject	Synthesized zeolites	en
dc.subject.other	Activation analysis	en
dc.subject.other	Contamination	en
dc.subject.other	Fly ash	en
dc.subject.other	Hydrothermal synthesis	en
dc.subject.other	Lignite	en
dc.subject.other	Metalloids	en
dc.subject.other	Metals	en
dc.subject.other	pH effects	en
dc.subject.other	Remediation	en
dc.subject.other	Zeolites	en
dc.subject.other	Alkaline activation	en
dc.subject.other	Lignite fly ash	en
dc.subject.other	Soil washing	en
dc.subject.other	Synthesized zeolites	en
dc.subject.other	Soil pollution	en
dc.title	Remediation of soils polluted by industrial activities utilizing hydrothermally treated calcareous fly ashes	en
heal.type	conferenceItem	en
heal.publicationDate	2004	en
heal.abstract	The current research investigates the effect of treated fly ash as a synthesized zeolite on remediating soils polluted with a variety of heavy metals and metalloids (As, Pb, Cu, Zn, Fe and Mn). In particular, 4 types of 'zeolites' were synthesized by hydrothermal treatment, using sodium hydroxide solution, of a calcareous fly ash derived from Lignite-Fired Power Plants (Ptolemaida and Megalopolis Stations, Greece): two with excess of sodium hydroxide in a solid/liquid ratio of 50g L-1 and two with excess of fly ash in a solid/liquid ratio of 100g L-1. Soil samples were obtained from a former mining site at the city of Lavrion, Greece. Mobilization and transfer of metals to the retention agents was undertaken using HCl aq 1M and Na2EDTA 0.1M. Retention results were satisfactory with respect to As, Pb, Cu, Mn. The different metal formations in contaminated soil were found to be of major importance for the effectiveness of the overall process. Another important factor was found to be the soil-solvent-additive interaction and the pH of the final liquid and solid products. The latter were solidified either on their own, or by utilizing additives such as lime and cement.	en
heal.journalName	Waste Management and the Environment II	en
dc.identifier.spage	283	en
dc.identifier.epage	291	en