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Title:	Mass transfer determining parameter in facilitated transport through di-(2-ethylhexyl) dithiophosphoric acid activated composite membranes
Author:	Macanás de Benito, Jorge; Muñoz Tapia, Maria
Other authors:	Universitat Politècnica de Catalunya. Departament d'Enginyeria Química; Universitat Politècnica de Catalunya. POLQUITEX - Materials Polimérics i Química Téxtil
Abstract:	Activated composite membranes (ACMs) containing di-(2-ethylhexyl) dithiophosphoric acid (D2EHDTPA) as a carrier have been found to facilitate the transport and separation of several cations. This paper describes an approach to the chemical characterisation of the transport phenomena of Zn2+, Cd2+, Cu2+, Ni2+, Sn2+ and In3+ by an ACM. The selectivity of D2EHDTPA based ACM towards different metal ions is presented and discussed focusing in Zn2+ and Cd2+ transport and recovery. Selectivity demonstrates that zinc ions are removable from mixtures due to the different extraction strength of D2EHDTPA. Such selectivity is based on the differences of the dynamic behaviour of the metal ions transport. In addition, a correlation of the chemical behaviour of those ACM systems with the corresponding solvent extraction systems has been found.
Subject(s):	-Àrees temàtiques de la UPC::Enginyeria química -Mass transfer -Metal ions -Membranes--analysis -Activated composite membranes -Facilitated transport -Di-(2-ethylhexyl)dithiophosphoric acid -Metal ions -Mass transfer -Transferència de massa -Materials compostos -Ions metàl·lics
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Document type:	Article - Published version Article
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