Industrial wastewater pre-treatment for heavy metal reduction by employing a sorbent-assisted ultrafiltration system

Katsou, E; Malamis, S; Haralambous, KJ

dc.contributor.author	Katsou, E	en
dc.contributor.author	Malamis, S	en
dc.contributor.author	Haralambous, KJ	en
dc.date.accessioned	2014-03-01T01:35:51Z
dc.date.available	2014-03-01T01:35:51Z
dc.date.issued	2011	en
dc.identifier.issn	0045-6535	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21222
dc.subject	Adsorption	en
dc.subject	Heavy metal removal	en
dc.subject	Mineral	en
dc.subject	Precipitation	en
dc.subject	Ultrafiltration	en
dc.subject	Wastewater	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	Chemical precipitation	en
dc.subject.other	Copper concentration	en
dc.subject.other	Heavy metal removal	en
dc.subject.other	Industrial wastewaters	en
dc.subject.other	Low level	en
dc.subject.other	Metal adsorption	en
dc.subject.other	Metal reduction	en
dc.subject.other	Metal removal	en
dc.subject.other	Metal removal process	en
dc.subject.other	Metal species	en
dc.subject.other	Nickel adsorption	en
dc.subject.other	Pre-Treatment	en
dc.subject.other	Precipitation	en
dc.subject.other	UF membranes	en
dc.subject.other	Adsorption	en
dc.subject.other	Astatine	en
dc.subject.other	Bentonite	en
dc.subject.other	Clay minerals	en
dc.subject.other	Copper	en
dc.subject.other	Industrial water treatment	en
dc.subject.other	Lead	en
dc.subject.other	Lead compounds	en
dc.subject.other	Metal ions	en
dc.subject.other	Metals	en
dc.subject.other	Minerals	en
dc.subject.other	Precipitation (chemical)	en
dc.subject.other	Silicate minerals	en
dc.subject.other	Ultrafiltration	en
dc.subject.other	Wastewater	en
dc.subject.other	Wastewater treatment	en
dc.subject.other	Water filtration	en
dc.subject.other	Zinc	en
dc.subject.other	Zinc compounds	en
dc.subject.other	Chemicals removal (water treatment)	en
dc.subject.other	bentonite	en
dc.subject.other	copper	en
dc.subject.other	heavy metal	en
dc.subject.other	hydroxide	en
dc.subject.other	lead	en
dc.subject.other	nickel	en
dc.subject.other	vermiculite	en
dc.subject.other	zeolite	en
dc.subject.other	zinc	en
dc.subject.other	adsorption	en
dc.subject.other	bentonite	en
dc.subject.other	heavy metal	en
dc.subject.other	hydroxide	en
dc.subject.other	industrial waste	en
dc.subject.other	precipitation (chemistry)	en
dc.subject.other	reduction	en
dc.subject.other	sorption	en
dc.subject.other	ultrafiltration	en
dc.subject.other	vermiculite	en
dc.subject.other	wastewater	en
dc.subject.other	zeolite	en
dc.subject.other	adsorption	en
dc.subject.other	aqueous solution	en
dc.subject.other	article	en
dc.subject.other	complex formation	en
dc.subject.other	industrial waste	en
dc.subject.other	pH	en
dc.subject.other	precipitation	en
dc.subject.other	sewage treatment	en
dc.subject.other	ultrafiltration	en
dc.subject.other	waste water management	en
dc.subject.other	Adsorption	en
dc.subject.other	Aluminum Silicates	en
dc.subject.other	Bentonite	en
dc.subject.other	Chemical Precipitation	en
dc.subject.other	Copper	en
dc.subject.other	Industrial Waste	en
dc.subject.other	Lead	en
dc.subject.other	Metals, Heavy	en
dc.subject.other	Nickel	en
dc.subject.other	Nitrogen	en
dc.subject.other	Ultrafiltration	en
dc.subject.other	Waste Disposal, Fluid	en
dc.subject.other	Water Pollutants, Chemical	en
dc.subject.other	Zeolites	en
dc.subject.other	Zinc	en
dc.title	Industrial wastewater pre-treatment for heavy metal reduction by employing a sorbent-assisted ultrafiltration system	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.chemosphere.2010.10.022	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.chemosphere.2010.10.022	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	This work examined the adoption of a sorbent-assisted ultrafiltration (UF) system for the reduction of Pb(II), Cu(II), Zn(II) and Ni(II) from industrial wastewater. In such a system metals were removed via several processes which included precipitation through the formation of hydroxides, formation of precipitates/complexes among the metal ions and the wastewater compounds, adsorption of metals onto minerals (bentonite, zeolite, vermiculite) and retention of insoluble metal species by the UF membranes. At pH = 6 the metal removal sequence obtained by the UF system was Pb(II) > Cu(II) > Zn(II) > Ni(II) in mg g(-1) with significant amount of lead and copper being removed due to chemical precipitation and formation of precipitates/complexes with wastewater compounds. At this pH, zinc and nickel adsorption onto minerals was significant, particularly when bentonite and vermiculite were employed as adsorbents. Metal adsorption onto zeolite and bentonite followed the sequence Zn(II) > Ni(II) > Cu(II) > Pb(II), while for vermiculite the sequence was Ni(II) > Zn(II) > Cu(II) > Pb(II) in mg g(-1). The low amount of Pb(II) and Cu(II) adsorbed by minerals was attributed to the low available lead and copper concentration. At pH = 9 the adoption of UF could effectively reduce heavy metals to very low levels. The same was observed at pH = 8, provided that minerals were added. The prevailing metal removal process was the formation of precipitates/complexes with wastewater compounds. (C) 2010 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Chemosphere	en
dc.identifier.doi	10.1016/j.chemosphere.2010.10.022	en
dc.identifier.isi	ISI:000286788300011	en
dc.identifier.volume	82	en
dc.identifier.issue	4	en
dc.identifier.spage	557	en
dc.identifier.epage	564	en