Synthetic Membranes and Their Preparation

In recent years, separations with synthetic membranes have become increasingly important processes in the chemical industry, in food and wastewater processing, and in medical treatment. Synthetic membranes made from a variety of polymers are used in processes such as microfiltration, ultrafiltration, reverse osmosis, electrodialysis, and gas separations. In this paper, the different membrane structures, their function and application in various separation processes are described. The preparation procedures of the various membrane types are discussed with special emphasis on symmetric and asymmetric membranes obtained by the phase inversion process.

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