Removal of hexavalent chromium by nanofiltration

被引：162
|
作者：
Hafiane, A
Lemordant, D
Dhahbi, M
机构：
[1] Inst Natl Rech Sci & Tech, Lab Physicochim Interfaces, Hammam Lif 2050, Tunisia
[2] Univ Tours, Fac Sci Parc Grandmont, Lab Physicochim Interfaces Milieux Reactionnels, EA1711, F-37200 Tours, France
来源：
DESALINATION | 2000年 / 130卷 / 03期
关键词：
nanofiltration; chromate removal; Donnan exclusion; phenomenological parameters;
D O I：
10.1016/S0011-9164(00)00094-1
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Removal of chromate CrO42- from water was investigated using nanofiltration as a possible alternative to the conventional methods of CrVI removal from aqueous solution. Retention measurements with single reference salt revealed that Donnan exclusion plays an important role. The phenomenological parameters sigma and P were calculated using the Spiegler-Kedem equation. The rejection rate depends on the ionic strength and pH. The increasing of ionic strength decreases the retention. The effect of pH was clarified by using a stable diagram of the CrVI-H2O system. Better retention was obtained at basic pH.
引用
收藏
页码：305 / 312
页数：8
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