Scholarlink

Tantalum oxide (Ta₂O₅), used in solid-state capacitors ofTantalum capacitors printed circuit boards (PCBsPrinted Circuit Boards (PCBs)), is a critical metalMetal essential for miniaturized electronics. Due to limited global reserves and geopolitical risks, recyclingRecycling tantalum from electronic waste is gaining importance. This review explores current and emerging techniques for recovering tantalum oxide from scrap tantalum capacitorsTantalum capacitors.Pyrometallurgical methods like plasma and chlorinationChlorination offer high-purity outputs but are energy-intensive. Hydrometallurgical approaches, especially those using hydrofluoric acid, provide excellent selectivity but pose environmental hazards. To address these issues, integrated pyro-hydrometallurgical flowsheets are gaining attention. Processes such as pyrolysis followed by acid leachingLeaching or chlorinationChlorination have demonstrated high efficiency and reduced environmental impact. The review also highlights innovative methods like microwave-assisted reduction and zeolite-based purification as future pathways. Overall, the paper emphasizes that a combination of advanced processingProcessing technologies and improved e-wasteE-waste sorting systems is key to achieving sustainable tantalum recovery from discarded electronics.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A Review on the Recovery of Tantalum Oxide from Tantalum Capacitors of Printed Circuit Boards

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Subrat Shekhar,
  • Rekha Panda,
  • Rukshana Parween,
  • Ankur Sharma,
  • Balram Ambade,
  • Manis Kumar Jha

摘要

Tantalum oxide (Ta₂O₅), used in solid-state capacitors ofTantalum capacitors printed circuit boards (PCBsPrinted Circuit Boards (PCBs)), is a critical metalMetal essential for miniaturized electronics. Due to limited global reserves and geopolitical risks, recyclingRecycling tantalum from electronic waste is gaining importance. This review explores current and emerging techniques for recovering tantalum oxide from scrap tantalum capacitorsTantalum capacitors.Pyrometallurgical methods like plasma and chlorinationChlorination offer high-purity outputs but are energy-intensive. Hydrometallurgical approaches, especially those using hydrofluoric acid, provide excellent selectivity but pose environmental hazards. To address these issues, integrated pyro-hydrometallurgical flowsheets are gaining attention. Processes such as pyrolysis followed by acid leachingLeaching or chlorinationChlorination have demonstrated high efficiency and reduced environmental impact. The review also highlights innovative methods like microwave-assisted reduction and zeolite-based purification as future pathways. Overall, the paper emphasizes that a combination of advanced processingProcessing technologies and improved e-wasteE-waste sorting systems is key to achieving sustainable tantalum recovery from discarded electronics.