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Completed
Transport phenomena and the interaction of ionizable materials in water
FunderNetherlands Organisation for Scientific Research (NWO)
Duration01 Sep 2002 - 07 Mar 2006
Project code700.52.406
Open Access mandatePublications: NoResearch data: No
Identifiers
Project timeline100%
Description
Ionizable materials in water are ubiquitous. We only have to think of the behavior and properties of clays, foods, paints, household and healthcare products and of the interaction of cells with each other and with substrates. Important technological applications are membranes for artificial kidney dialysis, nanofiltration for the desalting of water, and the manufacturing of ceramic products. New developments are the application of electrostatic fields to guide liquids through microfluidic devices or the use of titania-filled oil droplets for e-paper. To describe the interaction of these materials, chemical aspects of the surface-liquid interaction must be combined with the relevant transport phenomena. Unfortunately, the resulting models are very complex to solve by analytical means, which has resulted in the development of many empirical equations for the different sub-problems. Though these equations are necessary, they make it very hard for prospective students to come to grips with more than a few sub-problems, let alone to see or set up models for new (interdisciplinary) problems. Interestingly, rapid developments in numerical tools have made it possible to describe these problems by the same set of fundamental equations. This approach makes the field better accessible to new students, allows for more cross-fertilization and flexibility toward interdisciplinary problems. The author has much experience in using these new numerical tools to set up such models for the interaction behavior of water, ions and ionizable surfaces, and in comparing the simulation results with experiments. In the project that approach will be extended by working on interparticle forces as well as ion transport along and through ionizable (nanoporous) materials involving (non-)polarizable electrodes (such as in electro-osmotic flow, and in electrophoretic deposition). In a latter stage, a first attempt is made at describing interaction and transport involving lipid bilayers (that constitute cell membranes). Keywords: Water, Colloids, Ionizable surfaces, Electrochemistry, Transport phenomena.
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Ionizable materials in water are ubiquitous. We only have to think of the behavior and properties of clays, foods, paints, household and healthcare products and of the interaction of cells with each other and with substrates. Important technological applications are membranes for artificial kidney dialysis, nanofiltration for the desalting of water, and the manufacturing of ceramic products. New developments are the application of electrostatic fields to guide liquids through microfluidic devices or the use of titania-filled oil droplets for e-paper. To describe the interaction of these materials, chemical aspects of the surface-liquid interaction must be combined with the relevant transport phenomena. Unfortunately, the resulting models are very complex to solve by analytical means, which has resulted in the development of many empirical equations for the different sub-problems. Though these equations are necessary, they make it very hard for prospective students to come to grips with more than a few sub-problems, let alone to see or set up models for new (interdisciplinary) problems. Interestingly, rapid developments in numerical tools have made it possible to describe these problems by the same set of fundamental equations. This approach makes the field better accessible to new students, allows for more cross-fertilization and flexibility toward interdisciplinary problems. The author has much experience in using these new numerical tools to set up such models for the interaction behavior of water, ions and ionizable surfaces, and in comparing the simulation results with experiments. In the project that approach will be extended by working on interparticle forces as well as ion transport along and through ionizable (nanoporous) materials involving (non-)polarizable electrodes (such as in electro-osmotic flow, and in electrophoretic deposition). In a latter stage, a first attempt is made at describing interaction and transport involving lipid bilayers (that constitute cell membranes). Keywords: Water, Colloids, Ionizable surfaces, Electrochemistry, Transport phenomena.
