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    On Diffusion and Permeation

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    Type
    Article
    Authors
    Peppin, Stephen S. L.
    KAUST Grant Number
    KUK-C1-013-04
    Date
    2009-01
    Permanent link to this record
    http://hdl.handle.net/10754/599037
    
    Metadata
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    Abstract
    Diffusion and permeation are discussed within the context of irreversible thermodynamics. A new expression for the generalized Stokes-Einstein equation is obtained which links the permeability to the diffusivity of a two-component solution and contains the poroelastic Biot-Willis coefficient. The theory is illustrated by predicting the concentration and pressure profiles during the filtration of a protein solution. At low concentrations the proteins diffuse independently while at higher concentrations they form a nearly rigid porous glass through which the fluid permeates. The theoretically determined pressure drop is nonlinear in the diffusion regime and linear in the permeation regime, in quantitative agreement with experimental measurements. © 2009 Walter de Gruyter, Berlin, New York.
    Citation
    Peppin, S. S. L. (2009). On Diffusion and Permeation. Journal of Non-Equilibrium Thermodynamics, 34(4). doi:10.1515/jnetdy.2009.018
    Sponsors
    This research was supported by the King Abdullah University of Science and Technology (KAUST), Award No. KUK-C1-013-04.
    Publisher
    Walter de Gruyter GmbH
    Journal
    Journal of Non-Equilibrium Thermodynamics
    DOI
    10.1515/JNETDY.2009.018
    ae974a485f413a2113503eed53cd6c53
    10.1515/JNETDY.2009.018
    Scopus Count
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