1992 Volume 25 Issue 6 Pages 660-665
The hydraulic permeation properties of water through heat-treated polyvinyl alcohol (PVA) membrane were investigated. It was found that the flux of water is a highly nonlinear function of the applied pressure. The relation vw,o = vw,1(l – bΔP) was proposed for obtaining a modified solution diffusion equation which can describe the hydraulic permeation of water through heat-treated PVA membrane from experimental flux data. The modified solution diffusion equation was successfully tested for validity by three techniques. The data and modified solution diffusion equation appear to be in excellent agreement. The activation energy for water permeability is independent of the applied pressure on the heat-treated PVA membrane.