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Numerical Study of Drift Influence on Diffusion Transport through the Hybrid Membrane

Sodium alginate membranes filled with iron oxide nanoparticles consist of a mixture of organic and inorganic phases. This design offers the possibility to combine the polymer’s easy processability and superior separation performance. For a better understanding of the mechanisms of mixture separation...

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Autores principales: Krasowska, Monika, Strzelewicz, Anna, Dudek, Gabriela, Cieśla, Michał
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9416707/
https://www.ncbi.nlm.nih.gov/pubmed/36005703
http://dx.doi.org/10.3390/membranes12080788
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author Krasowska, Monika
Strzelewicz, Anna
Dudek, Gabriela
Cieśla, Michał
author_facet Krasowska, Monika
Strzelewicz, Anna
Dudek, Gabriela
Cieśla, Michał
author_sort Krasowska, Monika
collection PubMed
description Sodium alginate membranes filled with iron oxide nanoparticles consist of a mixture of organic and inorganic phases. This design offers the possibility to combine the polymer’s easy processability and superior separation performance. For a better understanding of the mechanisms of mixture separation, we analyze the diffusion motion of a particle in the hybrid membrane environment. We model structures of two-dimensional heterogenic membranes, which resemble real membrane structures, and then we simulate a random walk on them. We investigate how the additional action of drift changes the motion properties of the diffusing particles through the polymeric membrane filled with inorganic powder. We test the effect of two parameters: the distribution of obstacles (filling) in the membrane and the value of drift on the nature of diffusion. It appears that the synergy between drift, the diffusion, and the membrane structure affect the occurrence of the superdiffusive and subdiffusive character of particle motion as measured by the time-averaged mean square displacement. An important point is the observation that the strong drift supports subdiffusive motion as it increases the chances of particle trapping. Moreover, there exists the optimal value of drift, for which the transport through a membrane speeds up and does not cause trapping.
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spelling pubmed-94167072022-08-27 Numerical Study of Drift Influence on Diffusion Transport through the Hybrid Membrane Krasowska, Monika Strzelewicz, Anna Dudek, Gabriela Cieśla, Michał Membranes (Basel) Article Sodium alginate membranes filled with iron oxide nanoparticles consist of a mixture of organic and inorganic phases. This design offers the possibility to combine the polymer’s easy processability and superior separation performance. For a better understanding of the mechanisms of mixture separation, we analyze the diffusion motion of a particle in the hybrid membrane environment. We model structures of two-dimensional heterogenic membranes, which resemble real membrane structures, and then we simulate a random walk on them. We investigate how the additional action of drift changes the motion properties of the diffusing particles through the polymeric membrane filled with inorganic powder. We test the effect of two parameters: the distribution of obstacles (filling) in the membrane and the value of drift on the nature of diffusion. It appears that the synergy between drift, the diffusion, and the membrane structure affect the occurrence of the superdiffusive and subdiffusive character of particle motion as measured by the time-averaged mean square displacement. An important point is the observation that the strong drift supports subdiffusive motion as it increases the chances of particle trapping. Moreover, there exists the optimal value of drift, for which the transport through a membrane speeds up and does not cause trapping. MDPI 2022-08-17 /pmc/articles/PMC9416707/ /pubmed/36005703 http://dx.doi.org/10.3390/membranes12080788 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Krasowska, Monika
Strzelewicz, Anna
Dudek, Gabriela
Cieśla, Michał
Numerical Study of Drift Influence on Diffusion Transport through the Hybrid Membrane
title Numerical Study of Drift Influence on Diffusion Transport through the Hybrid Membrane
title_full Numerical Study of Drift Influence on Diffusion Transport through the Hybrid Membrane
title_fullStr Numerical Study of Drift Influence on Diffusion Transport through the Hybrid Membrane
title_full_unstemmed Numerical Study of Drift Influence on Diffusion Transport through the Hybrid Membrane
title_short Numerical Study of Drift Influence on Diffusion Transport through the Hybrid Membrane
title_sort numerical study of drift influence on diffusion transport through the hybrid membrane
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9416707/
https://www.ncbi.nlm.nih.gov/pubmed/36005703
http://dx.doi.org/10.3390/membranes12080788
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