Filtration > applications

Micropore Technologies filter media has no internal surfaces on which particles can become trapped. It is, therefore, ideal for the selective removal of oversize material from suspensions of finely divided material, such as in latex production. The figure on the right shows the feed to a Micropore Technologies' filter and the filtrate. The oversize agglomerates and other large particles are removed from the flow. The filtration takes place in an enclosed environment and filter fouling with reactive monomer, and drying coatings, does not take place. High shear conditions can be used, if required, for further avoidance of fouling as well as backflushing. The filter tubes are entirely self-supporting and capable of resisting significant pressure differentials.

The filters can be used as candles and sheets and it is possible to provide very high shear at the membrane surface using novel operating procedures. Shear rates of 50,000 to 100,000 inverse seconds at the membrane surface are achievable without the need of excessive crossflow rates. The membrane design is ideal for the removal of fine particles from process streams and for the thickening-up from low solid content to high concentration slurries; e.g. for pigments.

Other applications include: effluent treatment, radioactive waste product filtration and combined adsorption/ion exchange with filtration.

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