Abstract
Sol-gel techniques are common in preparing inorganic ultrafiltration membranes. Since applicable membranes should exhibit improved chemical and thermal stability with respect to phase transition, pore size and particle growth, the authors developed a new method for preparing an inorganic ultrafiltration membrane made of magnesium aluminum spinel, MgAl{sub 2}O{sub 4}. This membrane is supported by a flat ceramic microfilter ({alpha}-Al{sub 2}O{sub 3}) produced via the tape casting process, which offers the opportunity of improved processing techniques and new module concepts compared to the widely used extruded multi channel modules. Membrane characteristics and some applications will be shown.
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