Filtration property of PA6/PA66 electrospun fibrous membrane for dyes

In order to separating dyes from dye waste water efficiently,electrospun nanofibrous membrane,which has higher surface adsorption energy and higher porosity than traditional membrane,was used as a novel membrane material to treat dye waste water. This paper has studied the filtration property of PA6/PA66 electrospun fibrous membrane for 0. 1 g / L disperse blue 2BLN suspension and weak acid blue N-RL solution with dead-end filtration method under constant pressure 0. 1 MPa. The surface morphology of PA6 /PA66 electrospun fibrous membrane,porous structure,dye particle size and rejection property also had been studied by SEM,pore size testing meter,nano-particle size testing meter and ultraviolet-visible spectrophotometer. The results showed that there was a compact cake layer on the surface of the membrane after being filtered constantly for 1 h,the rejection to disperse blue 2BLN was 95. 6% and to weak acid blue N-RL was only 35. 1%,but the filtration fluxes to these two dyes were similar.