Regeneration of natural zeolite polluted by lead and zinc in wastewater treatment systems

Katsou, E; Malamis, S; Tzanoudaki, M; Haralambous, KJ; Loizidou, M

dc.contributor.author	Katsou, E	en
dc.contributor.author	Malamis, S	en
dc.contributor.author	Tzanoudaki, M	en
dc.contributor.author	Haralambous, KJ	en
dc.contributor.author	Loizidou, M	en
dc.date.accessioned	2014-03-01T01:36:42Z
dc.date.available	2014-03-01T01:36:42Z
dc.date.issued	2011	en
dc.identifier.issn	0304-3894	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21403
dc.subject	Adsorption	en
dc.subject	Desorption	en
dc.subject	Lead	en
dc.subject	Regeneration	en
dc.subject	Zeolite	en
dc.subject	Zinc	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	4-cycle	en
dc.subject.other	Adsorption process	en
dc.subject.other	Aqueous solutions	en
dc.subject.other	Desorption efficiency	en
dc.subject.other	Desorption process	en
dc.subject.other	Diffusion process	en
dc.subject.other	Liquid medium	en
dc.subject.other	Natural zeolites	en
dc.subject.other	Regeneration	en
dc.subject.other	Regeneration cycles	en
dc.subject.other	Secondary effluent	en
dc.subject.other	Treated wastewater	en
dc.subject.other	Two stage	en
dc.subject.other	Wastewater treatment system	en
dc.subject.other	Adsorption	en
dc.subject.other	Desorption	en
dc.subject.other	Effluent treatment	en
dc.subject.other	Effluents	en
dc.subject.other	Lead	en
dc.subject.other	Metal ions	en
dc.subject.other	Wastewater	en
dc.subject.other	Wastewater treatment	en
dc.subject.other	Zinc	en
dc.subject.other	Zinc compounds	en
dc.subject.other	Lead removal (water treatment)	en
dc.subject.other	lead	en
dc.subject.other	metal ion	en
dc.subject.other	potassium chloride	en
dc.subject.other	zeolite	en
dc.subject.other	zinc	en
dc.subject.other	adsorption	en
dc.subject.other	aqueous solution	en
dc.subject.other	desorption	en
dc.subject.other	lead	en
dc.subject.other	reaction kinetics	en
dc.subject.other	waste treatment	en
dc.subject.other	wastewater	en
dc.subject.other	zeolite	en
dc.subject.other	zinc	en
dc.subject.other	adsorption	en
dc.subject.other	article	en
dc.subject.other	controlled study	en
dc.subject.other	desorption	en
dc.subject.other	kinetics	en
dc.subject.other	liquid culture	en
dc.subject.other	regeneration	en
dc.subject.other	waste water management	en
dc.subject.other	waste water treatment plant	en
dc.subject.other	water contamination	en
dc.subject.other	Adsorption	en
dc.subject.other	Diffusion	en
dc.subject.other	Kinetics	en
dc.subject.other	Lead	en
dc.subject.other	Metals	en
dc.subject.other	Models, Statistical	en
dc.subject.other	Potassium Chloride	en
dc.subject.other	Reproducibility of Results	en
dc.subject.other	Time Factors	en
dc.subject.other	Waste Disposal, Fluid	en
dc.subject.other	Water Pollutants, Chemical	en
dc.subject.other	Water Purification	en
dc.subject.other	Zeolites	en
dc.subject.other	Zinc	en
dc.title	Regeneration of natural zeolite polluted by lead and zinc in wastewater treatment systems	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jhazmat.2010.12.061	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jhazmat.2010.12.061	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	The aim of this work was to investigate the potential regeneration of natural zeolite which had been contaminated with lead and zinc contained in aqueous solutions, treated secondary effluent and primary treated wastewater. Several desorbing solutions were examined for the removal of Pb(II) and Zn(II) from zeolite and the highest desorption efficiency was obtained for 3 M KCl and 1 M KCl, respectively. The desorption process depended on the type and concentration of the desorbing solution, the metal being desorbed, the mineral selectivity towards the metal and the composition of the liquid medium where the adsorption process had taken place. Successive regeneration cycles resulted in the reduction of desorption efficiency by more than 50% after 9 and 4 cycles for lead and zinc, respectively. Kinetics examination showed that desorption was slower than adsorption, while metal ions which had been easily adsorbed were difficult to be desorbed. Adsorption was characterized by a three-stage diffusion process, while desorption followed a two-stage diffusion process. (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.2010.12.061	en
dc.identifier.isi	ISI:000291912200020	en
dc.identifier.volume	189	en
dc.identifier.issue	3	en
dc.identifier.spage	773	en
dc.identifier.epage	786	en