Linear non-equilibrium thermodynamics (LNET) has been used to express the dissipation function in single-membrane system with mechanical and osmotic pressures difference and volume and solute fluxes in a homogeneous binary non-electrolyte solution. On the basis of Kedem-Katchalsky model equations, the dissipation function in single-membrane system was derived in practical forms. Using that function, the numerical calculations for microbial cellulose polymeric membrane were performed.
View Article and Find Full Text PDFWe have presented the mathematical model, which can be the basis of determination of a numerical algorithm for the thickness of concentration boundary layers calculation for ternary nonelectrolyte solutions. This model is based on Rayleigh equation and second Kedem-Katchalsky equation for ternary solutions. In proposed model, the thickness of concentration boundary layers is controlled by concentration Rayleigh number.
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