摘要
以三通道中空纤维超滤膜为基膜,以2,5-二胺基苯磺酸(DIA)、聚乙烯亚胺(PEI)与碱性品红(FB)为水相单体,均苯三甲酰氯(TMAC)为有机相单体,通过界面聚合制备了荷电镶嵌滤膜,并对膜的性能进行了系统分析。分析结果表明,该膜在0.35 MPa的操作压力下纯水通量为18.8 L·m-2·h-1,对NaCl和二甲酚橙的截留率分别为12.42%和96.44%;操作压力升高,膜的水通量与截留率均升高;溶质浓度增加,膜的截留率升高,水通量降低;膜对二甲酚橙/NaCl、PEG1000/NaCl混合体系的最大分因子分别为19.14和10.38;膜耐酸、耐高温性能较强,但耐碱性能较差。通过界面聚合后,孔径接近1 nm的微孔数量增加,具有纳滤膜的特征。
Charged mosaic membrane （CMM） was prepared by interfacial polymerization （IP） in which the tri-channel hol- low fiber ultrafiltration membrane was used as the base membrane, basic fuchsin （BF） and PEI and 2,5-diaminobenzen sulfu- ric acid （DIA） as aqueous phase monomer, TMAC as organic phase m.onomer. Its performances were systematically analyzed. Results showed that its flux can reach 18.8 L.m-2.h-1 at 0.35 MPa, and its rejection for NaCl and xylenol orange was 12.42% and 96.44% respectively. Both flux and rejection increased as the operating pressure increased, and the flux declined and re- jection increased as the solute concentration increased. The separation factors for mixtures of xylenol orange/NaCl and PEG1000/NaCl can reach 19.14 and 10.38 respectively. It has higher endurance to acid and high temperature, but lower en- durance to alkali. The quantity of the pores with approximate lmm diameter was increased by IP, and the membrane has the feature of nanofiltration membrane.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2013年第10期113-117,共5页
Environmental Science & Technology
基金
国家高新技术发展基金(2008AA062330)
华北水利水电学院博士科研启动基金(201242)
关键词
三通道
中空纤维
荷电镶嵌膜
性能表征
tri-channel
hollow fiber
charged mosaic membrane
characterization
