1,721,177 research outputs found
Concentration Polarization and Solute-Membrane Interactions Affecting Pressure Driven Membrane Processes
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Temperature gradient affecting mass transport in synthetic membranes
No full textThe study of mass transport induced by temperature gradients through coarsely porous membranes (effect of thermodialysis) in various aqueous solutions demonstrates that a close analogy exists with thermal diffusion in the bulk liquid phase (Soret effect). Analysis of isothermal water permeability in the same partitions shows that the state of the solution contained in the pores is not altered relative to the bulk phase to the point of making impractical an extension of the molecular theory of the Soret effect to thermodialysis. A description of the experimental results within the frame of reference of both phenomenological and molecular theory allows one to appreciate the useful complementarity of the two approaches, and yields a better understanding of the deeper meaning of the observed effects. The study of mass transport induced by temperature gradients through coarsely porous membranes (effect of thermodialysis) in various aqueous solutions demonstrates that a close analogy exists with thermal diffusion in the bulk liquid phase (Soret effect). Analysis of isothermal water permeability in the same partitions shows that the state of the solution contained in the pores is not altered relative to the bulk phase to the point of making impractical an extension of the molecular theory of the Soret effect to thermodialysis. A description of the experimental results within the frame of reference of both phenomenological and molecular theory allows one to appreciate the useful complementarity of the two approaches, and yields a better understanding of the deeper meaning of the observed effects
Concentration Dependence of Electrokinetic Phenomena in Asymmetric Cellulose Acetate Membranes
No full textbiopolymer preparation by an integrated dynamic enzymatic membrane reactor: technical and economic analysis
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Influence of Electrolytes on Ultrafiltration Processes with Dynamically Formed Gelled-Composite Membranes
No full textFlow Regimes in an Unstirred Discontinuous Hyperfiltration Process: Comparison Between Analytical and Experimental Results
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