Competitive bind of anionic metals with cetylpyridinium chloride micelle in micellar-enhanced ultrafiltration

被引:37
|
作者
Baek, K [1 ]
Yang, JW [1 ]
机构
[1] Korea Adv Inst Sci & Technol, Natl Res Lab Environm Remediat, Dept Chem & Biomol Engn, Taejon 305701, South Korea
关键词
micellar-enhanced ultrafiltration; chromate; ferriccyanide; cetylpyridinium chloride; competitive bind;
D O I
10.1016/j.desal.2004.06.117
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Competitive binding characteristics of anionic metals, chromate and ferriccyanide, with cetylpyridinium chloride micelles were investigated in micellar-enhanced ultrafiltration (MEUF). In MEUF process, removal of pollutants depends on the bind of pollutants to surfactant micelles which increases with the valence of anions. The valence for chromate is -2, while that for ferriccyanide is -3. In chromate/CPC and ferriccyanide/CPC system, the removal of ferriccyanide was higher than that of chromate at the same molar ratio of surfactant due to the difference of valence. In the chromate/ferriccyanide/CPC system, the removal of chromate was inhibited by the ferriccyanide at the low molar ratio of CPC (<chromate: ferriecyanide: CPC = 1:1:4) because of preferential bind of ferriccyanide to chromate.
引用
收藏
页码:101 / 110
页数:10
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