Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Preparation and Characterization of Copper Oxychloride from Acidic Copper Chloride Etchant

PCB 산업에서 배출되는 산성 염화동 폐액으로부터 Copper Oxychloride의 제조 및 특성분석

  • 김영희 (요업(세라믹)기술원 환경재료팀) ;
  • 김수룡 (요업(세라믹)기술원 환경재료팀) ;
  • 정상진 (요업(세라믹)기술원 환경재료팀) ;
  • 이윤주 (요업(세라믹)기술원 환경재료팀) ;
  • 어영선 (한국과학기술연구원 재료연구부)
  • Published : 2003.04.01
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Abstract

Copper oxychloride used as an agricultural fungicide has been recovered from copper-containing waste etchant by the neutralization with alkali hydroxides. Large amount of copper-containing waste etchant is generated from Printed Circuit Board industry. In an environmental and economic point of view, retrieve of the valuable natural resource from the waste is important. Recycling process of copper oxychloride from the waste etchant is discovered through the our study. In the range of reaction temp. 2$0^{\circ}C$-4$0^{\circ}C$, pH 5-7, pure copper oxychloride was able to prepare and the yield of copper oxychloride was higher than 95%. Physical properties of the sample have been characterized using SEM, XRD, TGA, ICP and Atomic absorption spectroscopy.

PCB (Printed Circuit Board) 산업에서 배출되는 산성 염화동 폐액으로부터 농약원제로 사용이 가능한 고순도의 copper oxycloride를 제조하였다. PCB제조 산업은 구리 소재를 이용한 전자 부품 가공 산업으로서 제조 공정인 부식 과정에서 다량의 구리가 함유된 에칭 폐액이 발생한다. 환경과 경제적인 측면에서 폐액으로부터 구리성분을 재회수하는 기술의 개발은 매우 중요하다. 본 연구에서는 가성소다로 폐액을 중화하여 copper oxychloride를 회수하는 공정의 반응 조건을 확립하였다. 반응 온도 2$0^{\circ}C$-4$0^{\circ}C$, pH 5-7 사이에서 순수한 copper oxychloride제조가 가능하였고 이때 수득율은 95% 이상이었다. 생성물의 물리적 특성을 SEM, XRD, TGA, ICP 그리고 원자 흡수 분광기를 사용하여 분석하였다.

Keywords

References

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