SYNTHESIS OF CERAMIC MICROFILTRATION MEMBRANES FOR OIL WATER SEPARATION/

Alumina and zirconia composite membranes without defects for oil/water separation have been produced by the reverse dip-drawing technique. T he thickness (5-15 mu m) and the uniformity of the top layer could be appropriately controlled by adjusting process variables such as the sl urry concentration and the flow rate of the slurry. The effective aver age pore sizes of alumina and zirconia top-layers are 0.16 mu m and le ss than 0.07 mu m, respectively. The composite membranes are found to be very effective for removing oil from o/w emulsions.