Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Recovery of Precious Metals in Plating Rinsed Wastewater Generated from Lead Frame Manufacturing Process

Lead Frame 제조공정에서 발생되는 도금세정폐수 중 유가금속회수

  • Kim, Jae-Yong (Department of Environmental Engineering, Chungbuk National University) ;
  • Um, Myeong-Heon (Division of Chemical Engineering, Kongju National University) ;
  • An, Dae-Hyun (Department of Environmental Engineering, Chungbuk National University) ;
  • Shim, Myeong-Jin (Department of Environmental Engineering, Chungbuk National University)
  • 김재용 (충북대학교 환경공학과) ;
  • 엄명헌 (공주대학교 화학공학부) ;
  • 안대현 (충북대학교 환경공학과) ;
  • 심명진 (충북대학교 환경공학과)
  • Received : 2005.09.09
  • Accepted : 2006.07.28
  • Published : 2006.08.10
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Abstract

The object of this experiment is to recover precious metals from plating rinsed wastewater generated from Lead Frame manufacturing process using electrolysis coupled hybrid process. This was achieved from Amberlite IRA 400 at 1.15 V electrolysis potential using the oxide electrode and at 1.30 V using the Al electrode and from Amberlite IRA 402 at 1.10 V using the oxide electrode and at 1.20 V using the Al electrode. During the first 10~30 min of the process, 90~95% of the silver can be recovered.

본 연구는 전기분해반응과 이온교환반응이 결합된 하이브리드 공정을 통하여 반도체 부품제조 시 발생하는 도금세정폐수 중에 함유되어 있는 시안을 분해시키고 은, 구리 등의 유가금속은 음극에 석출하고자 하였다. 역세공정 후에도 탈착되지 않은 이온들은 다음과 같은 전해조건으로 강염기성 음이온교환수지로부터 은을 회수하였다. Amberlite IRA 400 (산화전극 1.15 V, 알루미늄전극 1.3 V)과 Amberlite IRA 402 (산화전극 1.10 V, 알루미늄전극 1.2 V)에서의 실험결과 10~30 min 동안에 90~95%의 Ag을 회수할 수 있었다.

Keywords

References

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