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Separation of Heavy Metals from Electroplating Waste Water by Solvent Extraction  

KIM Sung Gyu (한국과학기술연구원 금속공정연구센터)
LEE Hwa Yeung (한국과학기술연구원 금속공정연구센터)
OH Jong Kee (한국과학기술연구원 금속공정연구센터)
Publication Information
Resources Recycling / v.12, no.1, 2003 , pp. 25-32 More about this Journal
Abstract
A study on the separation of heavy metals such as iron, copper, zinc and nickel from electroplating waste water has been investigated. The results showed that the PC-88A was more effective extractant for the extraction of zinc and the efficiency of zinc was to be about 100% at pH 2.5. And copper and nickel were extracted about 100% at pH 2 and more than 90% at pH 4～5 with LIX 84, respectively. On the other hand, in the case of solvent extraction of electroplating waste water(Acid-Alkali type) containing heavy metals, the ferric ion was first extracted at pH 2∼2.5 with 20% Naphthenic acid or 10% Versatic acid-10. And then, copper and zinc were extracted at pH 2 with 3% LIX 84 and at pH 2.5∼3 with 20% PC-88A respectively, remaining nickel in the raffinate. In this manner, the heavy metals in electroplating waste water could be effectively separated with solvent extraction method.
Keywords
Electroplating waste water; Solvent extraction; heavy metal; Cation-exchange extractant;
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1 남동제일도금공단사업협동조합 공정자료 (1997)
2 A. Smith and T. Mudder : 'The Chemistry and Treatment of Cyanidation Wastes', Mining Jour. Books Ltd., London, p. 345 (1991)
3 K. Inoue, et, aI., : 'Extraction Mechanism of Copper by Versatic Acid-W', Hydrometallurgy, 8, p.309-329, (1982)   DOI   ScienceOn
4 M. Pourbaix : Atlas of Electrochemical Equilibria in Aqueous Solutions, Pergamon Press, USA, p.387, (1974)
5 F. M. Doyle-Garner and A. J. Monhemius : 'Mixed lronNickel Complexes in Versatic Acid-IO Solution', Hydrometallurgy, 13, p.317-326, (1985)   DOI   ScienceOn
6 V. Kumar, B. D. Pandey and D. Bagchi, : 'Application of LlX 84 for Separation of Copper, Nickel and Cobalt in Ammoniacal Leaching of Ocean Nodules', Materials Trans., JIM, 32(2), p.157-163, (1991)   DOI
7 한국도금협동조합 : 한국도금공업편람, p.301 (1994)
8 F. A. Steward and C. G. Ritzert: 'Waste Minimization and Recovery Technologies', Metal Finishing, 90(lA), p.786, (1992)
9 H. P. Rajcevic :c', Plating and Surface Finishing, 77(7), p.22, (1990)