Laser interferometric investigation of solute transport through membrane-concentration boundary layer system
| Autor: | Arkadiusz Bryll, Sławomir Wąsik, Marcin Drabik, Andrzej Ślęzak, Kazimierz Dworecki |
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| Rok vydání: | 2015 |
| Předmět: |
Diffusion
Biophysics Analytical chemistry Flux Molecular physics Quantitative Biology::Subcellular Processes Cellulose Molecular Biology Concentration polarization Original Paper Membrane transport Chemistry Lasers Membranes Artificial Cell Biology Models Theoretical Atomic and Molecular Physics and Optics Solute permeability coefficient Boundary layer Kinetics Membrane Interferometry Concentration boundary layers Laser interferometry Relative permeability Finite thickness Porosity |
| Zdroj: | Journal of Biological Physics |
| ISSN: | 1573-0689 |
| Popis: | We investigate diffusive transport in a membrane system with a horizontally mounted membrane under concentration polarization conditions performed by a laser interferometry method. The data obtained from two different theoretical models are compared to the experimental results of the substance flux. In the first model, the membrane is considered as infinitely thin, while in the second one as a wall of finite thickness. The theoretical calculations show sufficient correspondence with the experimental results. On the basis of interferometric measurements, the relative permeability coefficient (ζ(s)) for the system, consisting of the membrane and concentration boundary layers, was also obtained. This coefficient reflects the concentration polarization of the membrane system. The obtained results indicate that the coefficient ζ(s) of the membrane-concentration boundary layer system decreases in time and seems to be independent of the initial concentration of the solute. |
| Databáze: | OpenAIRE |
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