Hypochlorite treatment of hydrophilic hollow fiber ultrafiltration membranes for high fluxes

被引：25
|
作者：
Qin, JJ [1 ]
Wong, FS [1 ]
机构：
[1] Environm Technol Inst, Innovat Ctr, Singapore 639798, Singapore
来源：
DESALINATION | 2002年 / 146卷 / 1-3期
关键词：
ultrafiltration; hypochlorite treatment; hollow fiber membrane; blend of polysulfone and PVP;
D O I：
10.1016/S0011-9164(02)00497-6
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Hydrophilic hollow fiber ultrafiltration membranes produced from a blend of polysulfone/poly(vinyl pyrrolidone) (PVP, K90) were post-treated with a hypochlorite solution. The results showed that the fluxes of all membranes that were treated with hypochlorite were 4.7-5.3 times higher but the rejections of the treated membranes were much lower than that of an untreated membrane. This suggests that hypochlorite treatment can alter the pore size of treated membranes while eliminating swelling of PVP in the pores. The results also showed that there was an optimum treatment time with hypochlorite to achieve a hydrophilic membrane with a high flux.
引用
收藏
页码：307 / 309
页数：3
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