Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403


공학

한국표면공학회지 (17권1호 1-6)

Electrolytic recovery of metals from the plating rinse water with fluidized bed electrode reactor

유동층전극 반응기를 이용한 폐수내의 중금속 회수

이제근;전해수;
Lee, Jea-Keun;Chun, Hai-Soo;

고려대학교 공과대학 화학공학과;

Abstract

The fluidized bed electrode reactor(FBER) with conducting particles has been made use of the removal of metals from dilute electroplating rinse water. The electrolysis was carried out under the conditions of diaphragm current density with 2~28A/$dm^2$ and bed expansion with 20~50%. Recirculating batch operations have been shown that the metal concentration dropped exponentially and may be taken down to 10 ppm. And then, the current efficiency at a concentration of 10 ppm copper was 37% under the conditions of 30% bed expansion and 6 A/$dm^2$, and at concentrated electrolyte (2000ppm copper) was over 80% in the range of 8~28A/$dm^2$ and 20~50% bed expansion. One of the technical possibilities of fluidized bed electrolysis is the separation of copper and nickel from a mixed solution of copper and nickel.

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