Comparative uptake study of toxic elements from aqueous media by the different particle-size-fractions of fly ash

Itskos, G; Koukouzas, N; Vasilatos, C; Megremi, I; Moutsatsou, A

dc.contributor.author	Itskos, G	en
dc.contributor.author	Koukouzas, N	en
dc.contributor.author	Vasilatos, C	en
dc.contributor.author	Megremi, I	en
dc.contributor.author	Moutsatsou, A	en
dc.date.accessioned	2014-03-01T01:33:02Z
dc.date.available	2014-03-01T01:33:02Z
dc.date.issued	2010	en
dc.identifier.issn	0304-3894	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20282
dc.subject	Calcareous fly ash	en
dc.subject	Cr (VI)	en
dc.subject	Heavy metal-removal	en
dc.subject	Particle size distribution	en
dc.subject	Siliceous fly ash	en
dc.subject	Wastewater-treatment	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	Aqueous media	en
dc.subject.other	Aqueous solutions	en
dc.subject.other	Batch adsorption experiments	en
dc.subject.other	Calcareous fly ash	en
dc.subject.other	Chemical compositions	en
dc.subject.other	Cr (VI)	en
dc.subject.other	Different sizes	en
dc.subject.other	Grain diameter	en
dc.subject.other	Hexavalent chromium	en
dc.subject.other	Industrial wastewaters	en
dc.subject.other	Loss on ignition	en
dc.subject.other	Siliceous fly ash	en
dc.subject.other	Toxic elements	en
dc.subject.other	Adsorption	en
dc.subject.other	Calcium	en
dc.subject.other	Chromium	en
dc.subject.other	Chromium compounds	en
dc.subject.other	Fly ash	en
dc.subject.other	Lead	en
dc.subject.other	Lead removal (water treatment)	en
dc.subject.other	Particle size	en
dc.subject.other	Particle size analysis	en
dc.subject.other	Size distribution	en
dc.subject.other	Solutions	en
dc.subject.other	Wastewater	en
dc.subject.other	Wastewater treatment	en
dc.subject.other	Zinc	en
dc.subject.other	Chemicals removal (water treatment)	en
dc.subject.other	cadmium	en
dc.subject.other	chromium	en
dc.subject.other	copper	en
dc.subject.other	heavy metal	en
dc.subject.other	lead	en
dc.subject.other	nickel	en
dc.subject.other	zinc	en
dc.subject.other	adsorption	en
dc.subject.other	aqueous solution	en
dc.subject.other	cadmium	en
dc.subject.other	chemical composition	en
dc.subject.other	chromium	en
dc.subject.other	comparative study	en
dc.subject.other	copper	en
dc.subject.other	fly ash	en
dc.subject.other	industrial waste	en
dc.subject.other	lead	en
dc.subject.other	nickel	en
dc.subject.other	particle size	en
dc.subject.other	pH	en
dc.subject.other	pollutant removal	en
dc.subject.other	precipitation (chemistry)	en
dc.subject.other	toxic material	en
dc.subject.other	waste treatment	en
dc.subject.other	wastewater	en
dc.subject.other	zinc	en
dc.subject.other	adsorption	en
dc.subject.other	aqueous solution	en
dc.subject.other	article	en
dc.subject.other	bioremediation	en
dc.subject.other	chemical composition	en
dc.subject.other	comparative study	en
dc.subject.other	fly ash	en
dc.subject.other	heavy metal removal	en
dc.subject.other	particle size	en
dc.subject.other	pH	en
dc.subject.other	precipitation	en
dc.subject.other	toxic waste	en
dc.subject.other	waste water	en
dc.subject.other	X ray fluorescence	en
dc.subject.other	Adsorption	en
dc.subject.other	Carbon	en
dc.subject.other	Environmental Remediation	en
dc.subject.other	Industrial Waste	en
dc.subject.other	Metals, Heavy	en
dc.subject.other	Particle Size	en
dc.subject.other	Particulate Matter	en
dc.subject.other	Water Pollutants	en
dc.subject.other	Water Purification	en
dc.title	Comparative uptake study of toxic elements from aqueous media by the different particle-size-fractions of fly ash	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jhazmat.2010.07.095	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jhazmat.2010.07.095	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	The purpose of the study described in this paper was to determine the removal of Cr (total), Cr (VI), Cu, Ni, Pb, Zn and Cd from wastewater using different particle-size-fractions of highly calcareous and highly siliceous fly ashes (FAs). Three different Hellenic FAs (two calcareous and one siliceous) were tested for their capability of precipitating heavy metals from aqueous solutions. Each FA sample was separated into six different size-fractions with a grain diameter range of:[(0-25)(25-40) (40-90) (90-150) (150-400) and (>400)] mu m. The different FA grain-fractions were evaluated in terms of their chemical composition, pH. Loss on Ignition (LOI) and CaOf (%). Batch adsorption experiments were then carried out, indicating that the various grain-fractions of the highly siliceous FA were more efficient in precipitating Cr (VI) but less capable of retaining Cd, Cu, Ni, Pb and Zn. On the other hand, the high-Ca fly ashes were proven to be more efficient in uptaking Cd, Cu, Ni, Pb and Zn, but less in hexavalent chromium. This particular tendency was also confirmed in the case of the different particle-size-fractions of same fly ashes. It was actually verified that FAs can be more effective in the field of industrial wastewater-remediation when separated into their size-fractions. (C) 2010 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Journal of Hazardous Materials	en
dc.identifier.doi	10.1016/j.jhazmat.2010.07.095	en
dc.identifier.isi	ISI:000282607600101	en
dc.identifier.volume	183	en
dc.identifier.issue	1-3	en
dc.identifier.spage	787	en
dc.identifier.epage	792	en