Abstract
Dynamic UF membranes can be formed on a porous support by filtering a suspension of fine Zr particles (0.03-0.2 μm in diameter). The performance of the membrane depends on the size of the Zr particles and the thickness of the deposited layer. A flow rate below 2m · s-1 and pressure over 0.5 MPa were sufficient conditions to deposit the particles on the support and to form a UF membrane. The optimum conditions of membrane formation were 1.0 m · s-1 and 0.5 MPa at 25°C. The mechanism of membrane formation was analyzed by Ruth's cake filtration model. The calculated flux agreed very well with the flux of the membrane during formation under optimum conditions.
