2026-06-08T21:15:16Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/66692023-08-27T07:35:44Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Izquierdo Gil, María Amparo
author
García Villaluenga, Juan Pedro
author
Muñoz San Martín, Sagrario
author
Barragán García, Vicenta María
2023-06-16T15:26:14Z
2023-06-16T15:26:14Z
2020-08-17
1422-0067
10.3390/ijms21165897
https://hdl.handle.net/20.500.14352/6669
https://doi.org/10.3390/ijms21165897
https://www.mdpi.com/1422-0067/21/16/5897
The salt permeability through three commercial cation-exchange membranes with different morphologies is investigated in aqueous NaCl solutions. Ion-exchange membranes (IEMs) find application in different processes such as electrodialysis, reverse osmosis, diffusion dialysis, membrane electrolysis, membrane fuel cells and ion exchange bioreactors. The aim of this paper is the experimental determination of the electrolyte permeability in the following membranes: MK-40 membrane, Nafion N324 membrane and Nafion 117 membrane. The latter is selected as being a reference membrane. The effect of an increase in the NaCl concentration in the solutions on membranes transport properties is analyzed. With regard to membranes sorption, a decrease in the water content was observed when the external electrolyte concentration is increased. Concerning permeation through the membranes, the salt permeability increased with concentration for the Nafion 117 membrane and remained nearly constant for the other two membranes. A close relation between the degree of liquid sorption by the membranes and the electrolyte permeability was observed.
eng
Atribución 3.0 España
The Correlation between the Water Content and Electrolyte Permeability of Cation-Exchange Membranes
journal article
URL
https://docta.ucm.es/bitstreams/5259bfab-9ffa-427a-a374-b5725c3c78f6/download
File
MD5
e1e2963dcc055f20d8abc51c1e8be5c3
1995625
application/pdf
Villaluenga44libre+CC.pdf