摘要
以聚醚砜(PES)和醋酸纤维素(CA)为膜材料,采用L-S相转化法制备共混膜。当PES质量分数18%、聚乙烯吡咯烷酮(PVP)质量分数12%、CA质量分数2.6%、蒸发时间30 s、凝固浴温度303 K、凝固时间1800 s时,在0.2 MPa压力条件下,所制备的改性膜的纯水通量为606.70 L/(m2.h),高出PES膜1倍,牛血清蛋白(BSA)截留率变化不大。膜生物反应器(MBR)中PES/CA膜出水水质优良,运行中PES/CA膜抗污染性能优于PES膜。
The blending membrane is prepared by use of L-S phase inversion method with polyethersulfone (PES) and cellulose acetate (CA) as membrane materials. The experimental results show that with 18% of PES concentration, 12% of polyvinylpyrrolidone concentration, 2.6 % of CA concentration, 30 s of evaporation time, 303 K of coagulation bath temperature, 1 800 s of clotting time, and 0.2 MPa of pressure the pure water flux of modified membrane can reach 606.70 L/m^2· h, which two times the unmodified one, but with little changes in BSA rejection rate. The effluent treated by PES/CA membrane is good in water quality, and the anti-pollution performance of PES/CA membrane is also better than PES membrane.
出处
《现代化工》
CAS
CSCD
北大核心
2009年第9期57-60,共4页
Modern Chemical Industry
基金
教育部新世纪优秀人才计划(NECT-07-0175)
教育部科学技术研究重点项目(107046)
上海市基础研究重点项目(08JC1400500)
教育部博士点基金新教师项目(200802551001)
关键词
聚醚砜
醋酸纤维素
共混膜
抗污染性
膜生物反应器
polyethersulfone
cellulose acetate
blending membrane
anti-pollution performance
membrane bio-reactor
作者简介
邱恒(1987-),女,硕士生;
薛罡(1971-),男,博士生,副教授,主要研究方向水处理工程与技术,通讯联系人,021-67792538,xuegang@dhu.edu.cn。