A physicochemical study of reverse transport system based on nonequilibrium thermodynamics

Yang, Wongkang; Yamauchi, Akira; Kobayashi, Hideo

doi:10.1016/0376-7388(92)80113-x

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…This fact seems to be due to the different treatment from the previous one which was determined without the constant field assumption. However, the permeability ratio for a given system should be preferred that determined with the method of Kimizuka 17,18 rather than that according to Hodgkin and Katz.…”

Section: Resultsmentioning

confidence: 99%

Non Stationary Ionic Current through Polymer Charged Membrane

2003

Bulletin of the Korean Chemical Society

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The relaxation phenomena of ionic currents through the charged membrane under the constant applied potentials has been studied. The formulation was obtained for the non stationary current by assuming that the ion mobility is independent of concentration and the potential gradient is a constant within membrane, and it was applied to the experimental results with the sulfonated polystyrene collodion base membrane. It has been shown that the initial ion distributions in the membrane play a predominant role in the relaxation phenomena.

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Section: Resultsmentioning

confidence: 99%

Non Stationary Ionic Current through Polymer Charged Membrane

2003

Bulletin of the Korean Chemical Society

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“…Simon et al (1996) evaluated theoretically the degree of coupling in membrane separations. An experimental application can be found in Yang et al (1992). The shift in the counter-or co-ion concentration is the most usual form of performing uphill separations.…”

Section: Modeling Of Slm Transport Mechanismsmentioning

confidence: 99%

Metal Ion Separations by Supported Liquid Membranes

and

Miguel

1999

Ind. Eng. Chem. Res.

248

127

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Carrier-mediated transport through supported liquid membranes is currently recognized as a potentially valuable technology for selective separation and concentration of toxic and valuable metal ions. In this paper, a review of the fundamental aspects concerning metal ion transport and the influencing factors are surveyed in terms of data modeling, membrane efficiency (permeability, selectivity, stability), and data acquisition and evaluation. An account of the information reviewed demonstrates the need for critical reflection on system performances in order to accomplish scaling up operations. On the same basis, an attempt to outline some future trends in the field is presented.

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“…Ion‐exchange membranes have found numerous applications in industrial processes,1–9 but many questions regarding their transport behavior is not well understood. In applications of the membranes, it is important to develop as detailed an understanding as possible about the underlying relationships between the membrane structure and the transport properties.…”

Section: Introductionmentioning

confidence: 99%

Transport of Cu(II) ions through charged cation‐exchange membranes

Ersöz

Çengeloğlu

Kır

et al. 2001

J of Applied Polymer Sci

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Transport of Cu(II) ions through polysulfonated cation-exchange membranes under Donnan dialysis conditions was studied as a function of the pH gradient. The used charged membranes are homogeneous (polysulfone composition) and heterogeneous (polysulfone with polyester support) structures which are strongly acidic cation-exchange microporous-type membranes. The flux increases with decreasing of the pH gradient, which is influenced by the transport of copper ions. The quantitative relations were obtained which describe the time dependence of the transport system with the equilibrium distribution and the results were correlated with the flux data as well as with the membrane structure.

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A physicochemical study of reverse transport system based on nonequilibrium thermodynamics

Cited by 6 publications

References 13 publications

Non Stationary Ionic Current through Polymer Charged Membrane

Non Stationary Ionic Current through Polymer Charged Membrane

Metal Ion Separations by Supported Liquid Membranes

Transport of Cu(II) ions through charged cation‐exchange membranes

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