精密炉ろ膜による加工液のろ過 : 第1報, 膜面上の乱れと膜透過流束について

概要

論文の詳細を見る
Membrane methods have been used to separate substances from solutions. However, in these cases; it is very difficult to avoid the growing of gel layers or cake layers, and the concentration polarization on the surface of the membrane. These phenomena decrease the effect of the filtration. Creating a turbulence on the surface of the membrane is one of the more effective ways to prevent these problems. However, there are few reports which provide details about them. In this report, a fundamental analysis is carried out experimentally about the influence of turbulence on the surface of the membrane on the permeation flux. A stirring bar, as the type of turbulence promoter, is set on the surface of the membrane. Filtrations of machining fluids are carried out with three cellulose-nitrate- type membranes for microfiltration, which have respective pore diameters of 0.1, 0.2 and 0.45μm. The effects of revolution of the stirring bar, feed concentration and pore diameter on permeation flux and solute rejection are examined. The behavior of this flux is analyzed by resistance of the membrane itself, the plugging and the cake layer.
一般社団法人日本機械学会の論文
1992-02-25