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[Streaming gravity-diffusive effect for a series of two flat polymeric membranes oriented horizontally]
A Slezak1, J Wasik, J Jasik-Slezak
1Wydział Zarzadzania, Politechnika Czestochowska w Czestochowie.
Polimery W Medycynie
|April 9, 2002
Summary
This study investigates the flux gravidiffusive effect in a double-membrane cell using polymeric membranes. Convective instability was found to increase diffusive permeability, impacting solute transport.
Area of Science:
- Physical Chemistry
- Membrane Science
- Transport Phenomena
Context:
- Investigates solute and solvent transport across microporous polymeric membranes.
- Examines a double-membrane osmotic-diffusive cell with specific configurations (A and B).
- Utilizes heterogeneous binary and ternary non-ionic solutions (glucose, ethanol) with defined concentration gradients (Ckl > Ckm > Ckr).
Purpose:
- To study the flux gravidiffusive effect in a double-membrane osmotic-diffusive cell.
- To analyze the influence of convective instability on diffusive permeability.
- To interpret experimental results in terms of membrane-solution interactions.
Summary:
- Evaluated the flux gravidiffusive effect using Nephrophane and Cellulose IMP-1 membranes in a double-membrane cell with infinitesimal inter-membrane volume and infinite external volumes.
- Observed effects in two configurations (A and B) with varying solution and water placements.
- Results indicate that convective instability enhances the diffusive permeability of membrane-concentration boundary layer complexes.
Impact:
- Provides insights into the mechanisms governing solute and solvent transport across membranes.
- Contributes to understanding convective instability phenomena in membrane systems.
- Relevant for applications involving separation processes, artificial organs, and osmotic systems.