Sorption experiments of Cr(III) onto silica

被引：44
|
作者：
Csoban, K [1 ]
Parkanyi-Berka, M
Joo, P
Behra, P
机构：
[1] Lajos Kossuth Univ, Dept Colloid Chem, H-4200 Debrecen, Hungary
[2] Univ Strasbourg, Inst Mecan Fluides, URA CNRS 854, F-67000 Strasbourg, France
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1998年 / 141卷 / 03期
关键词：
sorption; desorption; Chromium(III); amorphous silica; fluoride; experiments;
D O I：
10.1016/S0927-7757(98)00244-1
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The sorption and desorption behaviour of chromium( III) onto amorphous silicagel has been studied for two cases: freshly prepared and aged solutions. We have examined how solution pH, initial Cr(III) concentration, valency and concentration of background electrolyte and the presence of fluoride ion affect these processes. Desorption can be induced by acidification. Applying the same solution conditions, Cr(III) uptake and release are greater from aged solutions. Outer sphere complex formation can be deduced from the great ionic strength dependence at the onset of the sorption. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：347 / 364
页数：18
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