Preparation of Ceramic Ultrafiltration Membrane by Nano-Metal Oxides Modified

In order to prepare the ceramic ultrafiltration membrane with high-performance, the modification method of nano-metal oxides was chosen. The 19 channel porous ceramic membrane and the ZrCl₄ were chosen as the raw materials. The effects of ZrCl₄ concentration and modification times on the pore-size, permeability and structure of ceramic membrane were studied in detalis. The result shows that the nano-ZrO₂ was generated on the surface of the ceramic membrane after being modified and sintered. It can reduce the pore-size and the surface roughness of the ceramic membrane. Meawhile, this method can improve the permeability. Consequently, the ceramic ultrafiltration membrane has the pore-size of 75nm and the permeability of 1010.12L/m²·h·bar after sintering at 600°C for 2h with the optimized concentration of modify solution was 10g/L and the modified times was twice. (paper)