Column adsorption studies for the removal of U by phosphonated cross-linked polyethylenimine: modelling and optimization.

Saad, D.M.; Cukrowska, E.; Tutu, H.

dc.contributor.author	Saad, D.M.
dc.contributor.author	Cukrowska, E.
dc.contributor.author	Tutu, H.
dc.date.accessioned	2016-11-09T14:33:29Z
dc.date.available	2016-11-09T14:33:29Z
dc.date.issued	2015-03
dc.identifier.citation	Saad, D.M., Cukrowska, E. and Tutu, H. 2015. Column adsorption studies for the removal of U by phosphonated cross-linked polyethylenimine: modelling and optimization. Applied Water Science 5(1), pp.57-63.	en_ZA
dc.identifier.issn	2190-5487 (Print)
dc.identifier.issn	2190-5495 (Online)
dc.identifier.uri	http://hdl.handle.net/10539/21438
dc.description.abstract	A continuous fixed-bed adsorption study was carried out by using phosphonated cross-linked polyethylenimine as an adsorbent for the removal of uranium (U) from aqueous solutions. The effect of inlet metal ion concentration (40, 70, and 100 mg L-1), feed flow rate (1, 2, and 3 mL min(-1)), and polymer bed height (2.5, 3.2 and 4.5 cm) on the breakthrough characteristics of the fixed-bed adsorption system at pH 2 were studied. The results showed that the breakthrough time appeared to increase with increase of bed height but decreased with increase of both influent U concentration and flow rate. Modelling of the dynamics of the fixed-bed adsorption process was studied and the application of different models to describe the breakthrough curves showed that the Thomas and Yoon-Nelson model gave better results for the operating conditions.	en_ZA
dc.language.iso	en	en_ZA
dc.publisher	Springer	en_ZA
dc.rights	© The Author(s) 2014. This article is published with open access at Springerlink.com	en_ZA
dc.subject	Uranium removal	en_ZA
dc.subject	Breakthrough curves	en_ZA
dc.subject	Fixed-bed columns	en_ZA
dc.subject	HEAVY-METALS; BIOSORPTION; COMPLEXATION; IONS; BED	en_ZA
dc.subject	HEAVY-METALS	en_ZA
dc.subject	BIOSORPTION	en_ZA
dc.subject	COMPLEXATION	en_ZA
dc.subject	IONS	en_ZA
dc.subject	BED	en_ZA
dc.title	Column adsorption studies for the removal of U by phosphonated cross-linked polyethylenimine: modelling and optimization.	en_ZA
dc.type	Article	en_ZA
dc.journal.volume	5	en_ZA
dc.journal.title	Applied Water Science	en_ZA
dc.description.librarian	SP2016	en_ZA
dc.citation.doi	10.1007/s13201-014-0162-1	en_ZA
dc.citation.epage	63	en_ZA
dc.citation.issue	1	en_ZA
dc.citation.spage	57	en_ZA