抄録
Permeation of liquid through a membrane unit of (poly)tetrafluoroethylene (PTFE) was investigated to analyze the effects of liquid properties and the geometrical properties of the membrane unit on permeation. The liquid permeation rate was expressed by a Darcy-type equaton. The permeability coefficient was greatly affected by the interaction between the liquid and the membrane material. Moreover, when the exit-side surface of the membrane is exposed to the air, geometrical conditions such as the geometry of the plate which supports the membrane, and the inclination of the membrane surface affect significantly the permeation rate.
