Use of ultrafiltration membranes and aluminosilicate minerals for nickel removal from industrial wastewater

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

dc.contributor.author	Katsou, E	en
dc.contributor.author	Malamis, S	en
dc.contributor.author	Haralambous, KJ	en
dc.contributor.author	Loizidou, M	en
dc.date.accessioned	2014-03-01T01:34:49Z
dc.date.available	2014-03-01T01:34:49Z
dc.date.issued	2010	en
dc.identifier.issn	0376-7388	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20873
dc.subject	Adsorption	en
dc.subject	Aluminosilicate minerals	en
dc.subject	Nickel removal	en
dc.subject	Sludge	en
dc.subject	Ultrafiltration membranes	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Activated sludge	en
dc.subject.other	Aluminosilicate minerals	en
dc.subject.other	Aqueous solutions	en
dc.subject.other	Chemical precipitation	en
dc.subject.other	Concentration of	en
dc.subject.other	Contact time	en
dc.subject.other	Effluent reuse	en
dc.subject.other	Equilibrium isotherms	en
dc.subject.other	Film diffusion	en
dc.subject.other	Final effluents	en
dc.subject.other	Freundlich models	en
dc.subject.other	High temperature	en
dc.subject.other	Industrial wastewaters	en
dc.subject.other	Initial concentration	en
dc.subject.other	Intra-particle diffusion	en
dc.subject.other	Langmuir models	en
dc.subject.other	Nickel ions	en
dc.subject.other	Nickel removal	en
dc.subject.other	pH value	en
dc.subject.other	Removal efficiencies	en
dc.subject.other	Sludge	en
dc.subject.other	Sludge flocs	en
dc.subject.other	UF membranes	en
dc.subject.other	Ultra-filtration membranes	en
dc.subject.other	Aluminosilicates	en
dc.subject.other	Bentonite	en
dc.subject.other	Biosorption	en
dc.subject.other	Clay minerals	en
dc.subject.other	Concentration (process)	en
dc.subject.other	Effluents	en
dc.subject.other	Environmental Protection Agency	en
dc.subject.other	Membranes	en
dc.subject.other	Metal ions	en
dc.subject.other	Minerals	en
dc.subject.other	Nickel	en
dc.subject.other	Nickel alloys	en
dc.subject.other	Precipitation (chemical)	en
dc.subject.other	Removal	en
dc.subject.other	Silicate minerals	en
dc.subject.other	Solutions	en
dc.subject.other	Ultrafiltration	en
dc.subject.other	Wastewater	en
dc.subject.other	Water filtration	en
dc.subject.other	Adsorption	en
dc.subject.other	aluminum silicate	en
dc.subject.other	bentonite	en
dc.subject.other	nickel	en
dc.subject.other	vermiculite	en
dc.subject.other	zeolite	en
dc.subject.other	activated sludge	en
dc.subject.other	adsorption kinetics	en
dc.subject.other	aqueous solution	en
dc.subject.other	article	en
dc.subject.other	concentration (parameters)	en
dc.subject.other	controlled study	en
dc.subject.other	high temperature procedures	en
dc.subject.other	industrial waste	en
dc.subject.other	Langmuir Blodgett film	en
dc.subject.other	mathematical model	en
dc.subject.other	pH	en
dc.subject.other	precipitation	en
dc.subject.other	priority journal	en
dc.subject.other	sludge disposal	en
dc.subject.other	ultrafiltration	en
dc.subject.other	waste component removal	en
dc.subject.other	waste water management	en
dc.title	Use of ultrafiltration membranes and aluminosilicate minerals for nickel removal from industrial wastewater	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.memsci.2010.05.020	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.memsci.2010.05.020	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	This work investigated the removal of nickel ions from aqueous solutions and activated sludge by employing ultrafiltration (UF) membranes together with natural aluminosilicate minerals (bentonite, zeolite and vermiculite). The performance of the system was examined with respect to different parameters including the membrane nominal pore size, the temperature and pH of aqueous solution and sludge, the mineral type and concentration, the sludge MLSS concentration, the Ni(II) initial concentration and the metal-mineral contact time. The experiments were conducted in a batch ultrafiltration unit with constant initial Ni(II) concentration of 320 mg/l. The addition of 15 g/l of bentonite and 15 g/l of vermiculite at pH 6 resulted in Ni(II) removal efficiencies of 65.3% and 80.0% respectively due to sorption induced by minerals and sludge. The addition of 10 g/l vermiculite at pH 8 resulted in the production of a final effluent with Ni(II) concentration that met the EPA short-term effluent reuse limit of 2.0 mg/l. The processes involved in the removal of nickel consisted of biosorption onto sludge flocs, adsorption onto the mineral, retention of insoluble metal ions by the UF membranes and chemical precipitation. High temperatures, sludge MLSS concentrations and pH values favoured the nickel removal process. Film diffusion was important at the early stages of the process, while intraparticle diffusion was dominant at the later stages. The equilibrium isotherms for the minerals followed the Langmuir model, while sludge followed the Freundlich model. (C) 2010 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Journal of Membrane Science	en
dc.identifier.doi	10.1016/j.memsci.2010.05.020	en
dc.identifier.isi	ISI:000280311500028	en
dc.identifier.volume	360	en
dc.identifier.issue	1-2	en
dc.identifier.spage	234	en
dc.identifier.epage	249	en