Preliminary Research on Effect Factors of Permeation Flux of PVDF Microporous Hollow Fiber Membrane;

Influence of pretreament regeants on surface property and permeation flux of ceramic membrane;

The effects of / and temperature on properties of ultrafiltration membrane were discussed and the pure water permeation flux,separation property,hydrophihilicity of the surface,fouling tendency and infrared reflectance spectroscopy(IRS) of the ultrafiltration membrane before and after modifying were measured.

The results showed the penetration flux of the membrane was 5.

By incorporating diffusion parameters derived from atomistic Kinetic Monte Carlo(KMC) simulations a mass transfer model for predicting permeation fluxes of benzene in NaY zeolite membrane and supports has been developed,in which surface diffusion in the membrane and the bulk and Knudsen diffusion are described by applying the Maxwell-Stefan theory.

A mass transfer model for predicting permeation fluxes of single gases and a binary mixture of methane and ethane in a modular MFI zeolite membrane and support layer has been developed,in which the surface diffusion and activated gaseous diffusion in the membrane and the bulk and Knudsen diffusion are described by applying the Maxwell-Stefan formulation.

The retention rate, flux and aperture structure of chitosan membranes were affected by temperature of the coagulation bath.

The effects on flux of tangential flow rate, time, pressure and temperature were investigated.

The effects of tangential flow rate, the concentration of colostrum whey and pressure drop on the flux through the ultrafiltration membrane were investigated and a mathematic resistance model of flux has been established.