Solvent extraction recovery and separation of cadmium and copper from sulphate solution

被引：37
作者：
Bidari, Ehsan [1 ]
Irannejad, Mehdi [1 ]
Gharabaghi, Mahdi [2 ]
机构：
[1] Amirkabir Univ Technol, Dept Min & Met Engn, Tehran, Iran
[2] Univ Tehran, Coll Engn, Sch Min Engn, Tehran, Iran
来源：
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2013年 / 1卷 / 04期
关键词：
Solvent extraction; Copper; Cadmium; Phosphoric acid; Oxime;
D O I：
10.1016/j.jece.2013.09.016
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study solvent extraction process has been used for separation of cadmium and copper from sulphate solution. A phosphoric acid extractant (D2EHPA) and an oxime extractant (MEX) in kerosene diluent were used as cadmium and copper extractants, respectively. The results showed that 1 g/L cadmium could be extracted by 30-35% (v/v) D2EHPA at the pH of 3.5-4. Cadmium separation factor over copper with D2EHPA was calculated 4.04 in best condition of pH (=2). On the other hand 3% MEX separated 1 g/L copper over cadmium optimally at the pH of 3.5 and under this condition of pH, copper separation factor is calculated 4495.5. Loading capacity studies showed that copper existence in cadmium aqueous solution reduces cadmium extraction with D2EHPA up to 10% whilst copper extraction percentage with MEX does not vary considerably in the presence of cadmium. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1269 / 1274
页数：6
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