Transport of chromium(VI) through a Cyanex 921-supported liquid membrane from HCl solutions

被引：42
|
作者：
Alguacil, FJ [1 ]
Caravaca, C [1 ]
Martín, MI [1 ]
机构：
[1] CSIC, Madrid 28040, Spain
来源：
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY | 2003年 / 78卷 / 10期
关键词：
chromium(VI); Cyanex; 921; supported liquid membrane;
D O I：
10.1002/jctb.903
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
The transport of chromium(VI) through a flat-sheet supported liquid membrane containing Cyanex 921 as a carrier has been investigated. The permeation of the metal is investigated as a function of various experimental variables: hydrodynamic conditions, concentration of chromium(VI) and HCl in the feed phase, carrier concentration and diluent in the membrane and strippant concentration in the stripping phase. The mass transfer coefficient and the thickness of the aqueous boundary layer were calculated from the experimental data. Furthermore, the selectivity of Cyanex 921-based flat-sheet supported liquid membrane towards different metal ions and the behaviour of the system against other carriers are presented. (C) 2003 Society of Chemical Industry.
引用
收藏
页码：1048 / 1053
页数：6
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