This paper analyzes the separation properties of monovalent-anion-permselective membranes, manufactured and commercialized for edible salt production from seawater. Experimental data from the separation of SO42- from Cl- ions are used to verify the reliability of a new theory based on kinetic concepts, and compared with those of a previously studied separation (C2O42-/Cl-). In both cases, the proposed model fits data satisfactorily, contrary to the classical solution-diffusion model (based on thermodynamic principles), which cannot account for the strong dependency of the measured separation factors on the electric current density applied; the new proposed model may be thus regarded as a good tool for process design purposes.

Ion transport through monovalent-anion-permselective membranes / Saracco, Guido; Zanetti, Mariachiara. - In: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH. - ISSN 0888-5885. - 33:1(1994), pp. 96-101.

Ion transport through monovalent-anion-permselective membranes

SARACCO, GUIDO;ZANETTI, Mariachiara
1994

Abstract

This paper analyzes the separation properties of monovalent-anion-permselective membranes, manufactured and commercialized for edible salt production from seawater. Experimental data from the separation of SO42- from Cl- ions are used to verify the reliability of a new theory based on kinetic concepts, and compared with those of a previously studied separation (C2O42-/Cl-). In both cases, the proposed model fits data satisfactorily, contrary to the classical solution-diffusion model (based on thermodynamic principles), which cannot account for the strong dependency of the measured separation factors on the electric current density applied; the new proposed model may be thus regarded as a good tool for process design purposes.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/1653972
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