A comparative study of the selective transport of Zn/Cd and Pt/Pd couples with activated composite membranes and hybrid membranes
Resina Gallego, Montserrat (Universitat Autònoma de Barcelona)
Macanás de Benito, Jorge (Université Paul Sabatier)
Fontàs, Clàudia (Universitat de Girona. Departament de Química)
Palet i Ballús, Cristina (Universitat Autònoma de Barcelona)
Muñoz, Maria 1961- (Universitat Autònoma de Barcelona)

Date:	2009
Abstract:	Supported liquid membranes (SLMs) have demonstrated all along the years every high selectivity in facilitated transport of metal ions, however, they have some well known limitations, such as the gradual loss of the organic phase to the aqueous solutions. This paper describes two different types of novel membranes developed for the general purpose of separating and concentrating metal ions of interest in order to improve SLM physical and chemical characteristics. Both hybrid (organic-inorganic) membranes and activated composite membranes have been tested for the selective transport of Zn/Cd and Pt/Pd mixtures. For this purpose, different carriers have been used: 2-ethylhexyldithiophosphoric acid and 2-ethylhexylphosphoric acid for the separation of Zn and Cd whereas Aliquat 336 for Pt/Pd mixtures. The choice of these metal couples is related to environmental detoxification and catalyst recovery, respectively.
Grants:	Ministerio de Ciencia y Tecnología MAT2000-0506-P4-03 Ministerio de Ciencia y Tecnología CTQ2005-09430-C05-01
Note:	Altres ajuts: Departament d'Eduacio i Universitats of Generalitat de Catalunya for a postdoctoral grant
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Activated composite membranes ; Hybrid membranes ; Pt/Pd ; Selective transport ; Zn/Cd
Published in:	Desalination, Vol. 240, Issue 1-3 (May 2009) , p. 316-325, ISSN 0011-9164

DOI: 10.1016/j.desal.2007.11.079

Postprint 14 p, 384.6 KB

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