| Title |
Separation of Iron and Nickel from a Spent Etching Solution by Solvent Extraction using Mixer-settler |
| Authors |
이만승(Man Seung Lee); 이경주(Kyoung Joo Lee); 이진영(Jin Young Lee); 안재우(Jae Woo Ahn); 오영주(Young Joo Oh) |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
Etching solution; Iron; Nickel; Separation; Mixer-settler |
| Abstract |
Solvent extraction and stripping experiments were conducted to separate iron from a spent FeC13 etching solution containing nickel. In the operation of mixer-settler, 7 extraction stages with 1.0 M Alamine336 in toluene, led to 98% extraction percentage of iron at equal phase ratio, when the flow rate of organic and aqueous were 35 mL/min and 5 mL/min, respectively. At equal phase ratio of aqueous to organic, 10 stripping stages with 0.01 M HC1 solution resulted in 99% stripping percentage of iron when the flow rate of stripping solution and loaded organic were 5 mL/min and 35 mL/min, respectively. The concentration of iron in the stripped solution was 133 g/L and this solution could be reused in the etching of nickel lead frame. (Received June 15, 2004) |