The Recovery of EDTA in Waste PCB Chemical-copper Solution

CHEN Shi-rong; ZHENG Wei-qiang; CHEN Zhi-chuan; LIAO Wei-feng

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The Recovery of EDTA in Waste PCB Chemical-copper Solution

更新时间：2026-05-27

- The Recovery of EDTA in Waste PCB Chemical-copper Solution
- Vol. 22, Issue 3, Pages: 21-24(2005)
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- Online First：02 July 2005，
  
  Published：2005
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陈世荣, 郑伟强, 陈志传, 廖蔚峰. 印刷电路板化学镀铜液回收EDTA的研究[J]. 广东工业大学学报, 2005, 22(3): 21-24.

CHEN Shi-rong, ZHENG Wei-qiang, CHEN Zhi-chuan, et al. The Recovery of EDTA in Waste PCB Chemical-copper Solution[J]. 2005, 22(3): 21-24.
陈世荣, 郑伟强, 陈志传, 廖蔚峰. 印刷电路板化学镀铜液回收EDTA的研究[J]. 广东工业大学学报, 2005, 22(3): 21-24. DOI：

CHEN Shi-rong, ZHENG Wei-qiang, CHEN Zhi-chuan, et al. The Recovery of EDTA in Waste PCB Chemical-copper Solution[J]. 2005, 22(3): 21-24. DOI：

摘要

介绍一种印刷电路板化学镀铜废液回收EDTA的方法.利用化学镀铜废液中残留的HCHO

采用在强碱条件下还原除铜

调整废液的pH回收EDTA.该方法Cu的去除率达99.6%

EDTA的回收率大于98%;用回收的EDTA制备EDTA-Na2

纯度大于98.5%.实现化学镀铜废液的回收和循环使用.

Abstract

In this paper copper is reduced by formaldehyde which is contained in the wastewater of chemical copper plating.The EDTA acid can be recycled after acidulation.Using EDTA

EDTA-Na2 and new chemical copper plating solution are prepared.It is shown that the removal rate of copper is 99.6%.The（EDTA） recovery is more than 98%

and the purity of EDTA-Na2 which is made from EDTA is more than 98.5%.It can be used in industrys of chemical copper plating again.

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references

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