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Titolo:
THEORETICAL APPROACH AND THE PRACTICE TO THE EVALUATION OF STRUCTURALPARAMETERS CHARACTERIZING CONCENTRATION POLARIZATION ALONGSIDE ION-EXCHANGE MEMBRANES BY MEANS OF DIELECTRIC MEASUREMENT
Autore:
HANAI T; ZHAO K; ASAKA K; ASAMI K;
Indirizzi:
KYOTO UNIV,INST CHEM RES UJI KYOTO 611 JAPAN NE NORMAL UNIV,DEPT CHEM CHANGCHUN PEOPLES R CHINA
Titolo Testata:
Colloid and polymer science
fascicolo: 8, volume: 271, anno: 1993,
pagine: 766 - 773
SICI:
0303-402X(1993)271:8<766:TAATPT>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Keywords:
BIAS-VOLTAGE EFFECT; CONCENTRATION POLARIZATION; DIELECTRIC RELAXATION; ELECTRODIALYSIS; ION-EXCHANGE MEMBRANE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
4
Recensione:
Indirizzi per estratti:
Citazione:
T. Hanai et al., "THEORETICAL APPROACH AND THE PRACTICE TO THE EVALUATION OF STRUCTURALPARAMETERS CHARACTERIZING CONCENTRATION POLARIZATION ALONGSIDE ION-EXCHANGE MEMBRANES BY MEANS OF DIELECTRIC MEASUREMENT", Colloid and polymer science, 271(8), 1993, pp. 766-773

Abstract

As the application of a dielectric theory proposed previously (J Membrane Sci 64:153-161 (1991)), theoretical formulation and the practicalprocedure of dielectric analysis are developed to calculate the structural parameters such as the conductivity gradient and the thickness of the concentration polarization layer, the capacitances and the conductances of the two adjoining aqueous phases from the observed dielectric parameters. The procedure of calculation consequent upon the theoretical formulation was applied to double relaxation data observed for cation-exchange membrane systems under application of d.c. bias voltage. As a consequence, the structural parameters of concentration polarization were readily obtained with accuracy.

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Documento generato il 04/04/20 alle ore 21:41:53