Preparation And Characterization Of Aluminum Oxide (titanium Oxide) / Poly (vinylidene Fluoride) Composite Hollow Fiber Membrane And Its Application

Adding the nano-particle, the A12O3/PVDF, TiO2/PVDF composite hollow fiber membranes were investigated in this dissertation.By the SEM,it is showed that the PVDF has been beseted with nano-particle .Some of their performance were characterized.The max pore size of the pure PVDF membrane, A12O3/PVDF and TiO2/PVDF composite membrane is 0.75um, 0.35um, 0.39um respectively, their porosity is 64.46%, 48.03%, 49.69% respectively.The pure water flux of A12O3/PVDF , TiO2/PVDF composite membranes is 29.53L/m'.h, 90.63L/m3.h, the pure PVDF membrane's is 22.13L/ml.h. The rejection rate of the pure PVDF membrane, A12O3/PVDF and TiO2/PVDF composite membrane to PEG-20000 is 18.35%, 35.12%, 25.12%,their rejection rate to the bovine serum albumin reach to 3.36%, 93.89%, 73.33%. The effect of the A12O3/PVDF, TiO2/PVDF composite membrane to the oil-bearing wastewater is 92.42%, 91%.