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This study introduces an innovative method for the selectiveSelective extraction of copperCopper from waste printed circuit boards (WPCBs)Waste Printed Circuit Boards (WPCBs) using a single-stage leachingLeaching and solvent extraction (SX) process, employing the organic extractant, 2-hydroxy-5-nonylacetophenone oxime (LIX 84-I)LIX 84-I, with addition of a small amount of NH4OH (ammoniacal solvoleaching). CopperCopper can be selectively recovered by the proposed ammoniacal solvoleaching; following the optimization of leachingLeaching parameters, over 68% of Cu from WPCBs was recovered. Copper can then be efficiently stripped from the loaded organic solution using H2SO4. Notably, LIX 84-ILIX 84-I maintains its extraction efficiency through multiple leaching-stripping cycles. AmmoniacalAmmonia solvoleaching offers a practical and sustainableSustainable method for the simple and selectiveSelective extraction of Cu from WPCBs.

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Selective Recovery of Copper from Waste Printed Circuit Boards by Ammoniacal Solvoleaching

  • 会议论文

  • 发表日期：

    2025年

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  • Kurniawan Kurniawan,
  • Jae-chun Lee,
  • Sookyung Kim

摘要

This study introduces an innovative method for the selectiveSelective extraction of copperCopper from waste printed circuit boards (WPCBs)Waste Printed Circuit Boards (WPCBs) using a single-stage leachingLeaching and solvent extraction (SX) process, employing the organic extractant, 2-hydroxy-5-nonylacetophenone oxime (LIX 84-I)LIX 84-I, with addition of a small amount of NH4OH (ammoniacal solvoleaching). CopperCopper can be selectively recovered by the proposed ammoniacal solvoleaching; following the optimization of leachingLeaching parameters, over 68% of Cu from WPCBs was recovered. Copper can then be efficiently stripped from the loaded organic solution using H2SO4. Notably, LIX 84-ILIX 84-I maintains its extraction efficiency through multiple leaching-stripping cycles. AmmoniacalAmmonia solvoleaching offers a practical and sustainableSustainable method for the simple and selectiveSelective extraction of Cu from WPCBs.