摘要
应用海藻酸钠作为表面活性层材料,以戊二醛为交联剂,以聚砜超滤膜为支撑层,制备了1种新型荷负电纳滤膜。研究了复合纳滤膜的制备影响因素及操作条件对膜性能的影响,结果表明当海藻酸钠的浓度为2.0%,戊二醛溶液的浓度为0.9%,30℃下交联4 h条件下制备的复合膜的膜性能(截留率)最好。实验结果表明:对1 000 mg.L-1的Na2SO4,MgSO4,NaCl和MgCl2盐溶液的截留率分别为87.2%,21.5%,32.0%,12.2%,通量依次为30.6,35.2,33.5,22.4 L.h-1.m-2。
A novel composite nanofiltration（NF） membrane was prepared by over-coating the polysulfone ultrafiltration（UF） membrane with alginate thin layer.The effects of the membrane preparation techniques and operating conditions on the rejection performance of the composite membranes were studied.The results suggested that composite membrane with excellent performances was prepared while the concentration of sodium alginate was 2.0%,the concentration of glutaraldehyde was 0.9%,and the cross-linking time was 4.0 h at 30 ℃.Characterization was suggested： The salt rejections to Na2SO4,MgSO4,NaCl and MgCl2（1 000 mg·L^-1） were 87.2%,21.5%,32.0%,12.2%,respectively.And the permeation fluxes were 30.6,35.2,33.5 and 22.4 L·h^-1m^-2,respectively.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第10期85-89,共5页
Periodical of Ocean University of China
基金
山东省博士后创新基金项目(82214134)
中国博士后基金项目(20090451349)资助
关键词
复合纳滤膜
海藻酸钠
聚砜超滤膜
截留率
composite nanofiltration membrane
sodium alginate
polysulfone UF membrane
salt rejection
