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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/5764

Title: Combined ion exchange and microfiltration
Authors: Dragosavac, Marijana M.
Holdich, R.G.
Vladisavljevic, Goran T.
Issue Date: 2009
Citation: DRAGOSAVAC, M.M., HOLDICH, R.G. and VLADISAVLJEVIC, G., 2009. Combined ion exchange and microfiltration. DIAMOND’09 Conference Decommissioning, Immobilisation and Management of Nuclear Waste for Disposal, 9-10 September 2009, York, UK.
Abstract: The purpose behind this work is to produce polystyrene-divinylbenzene cation exchange resin particles at various sizes, smaller than are conventionally available, and to use them in a microfiltration process; comparing the results with conventional column operation. As a model system, for production of droplets using membrane emulsification, sunflower oil (discontinuous phase) and 2% Tween 20 solution (continuous phase) were used. By increasing the shear at the membrane surface the droplet size decreased from 185 to 50 μm. In the seeded microfiltration process, surface microfilters with slots without internal tortuosity were used to minimize fouling. A filtration flux rate of 3432 l m-2 h-1 was achieved. Rates of copper sorption on to ion exchange resin were found to be dependent on mass transport limitations due to aqueous film diffusion and internal particle diffusion. For prediction of copper sorption a model that takes into account both film and internal diffusion was used. Microfiltration combined with ion exchange has the advantage of very fast kinetics, when compared to column use, and may provide better utilization of the resin particle, depending on the internal diffusion coefficient of the transferring species within the particle.
Description: This conference paper was presented at DIAMOND'09: http://www.diamondconsortium.org/
URI: https://dspace.lboro.ac.uk/2134/5764
Appears in Collections:Conference Papers and Presentations (Chemical Engineering)

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