Current Status and Future Perspective of Waste Printed Circuit Boards Recycling
Current Status and Future Perspective of Waste Printed Circuit Boards Recycling
复制标题
DOI：
10.1016/j.proenv.2012.10.081
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Xianlai Zeng;L. Zheng;H. Xie;B. Lu;K. Xia;K. Chao;Weidong Li;Jian-xin Yang;Szu-Yin Lin
中科院分区：
文献类型：
--
作者：
Xianlai Zeng;L. Zheng;H. Xie;B. Lu;K. Xia;K. Chao;Weidong Li;Jian-xin Yang;Szu-Yin Lin
废弃电子电气设备（WEBs）中大量的废弃印刷电路板（PCBs）被排放到环境中。废弃多氯联苯结构复杂、金属含量高、具有潜在的危害性，是废弃物中最难回收利用的部分。因此，近十年来，这一问题引起了研究者和企业的广泛关注。本文综述了废弃多氯联苯从实验室到试验工程应用的最新工艺，并介绍了最适合废弃多氯联苯的现有技术，这些技术在发展中国家和发达国家分别被归类为人工拆解和自动拆解方法。为了实现废弃PCB更好的可持续性和可回收性，应开发非金属粉末和贵金属，以便在机械处理后进行深度回收。此外，一个重大的转变正在出现，从为回收印刷线路板而进行的拆卸，到为再制造电子元件而进行的拆卸，这将表明回收废弃多氯联苯的新模式正在形成。
For waste electrical and electronic equipment (WEEE), large quantities of waste printed circuit boards (PCBs) are released into environment. In light of their characteristics including complex structures, high metals content and potential hazards, waste PCBs are regarded as the most difficult parts of WEEE to be recycled. Therefore in recent ten years, the issue has attracted much attention from researchers and enterprises. This article reviews the latest processes of waste PCBs developed from laboratories to pilot engineering applications, and presents the most suitable available technology for waste PCBs, typically categorized as manually dismantling and automatic approaches in developing and developed countries, respectively. Towards achieving the better sustainability and recyclability for waste PCBs, nonmetal powder and precious metals should be developed for a deep recovery following mechanical treatment. Additionally, a significant shift is emerging from dismantling for recycling of printed wiring boards, to disassembling for remanufacturing of electronic components, which will indicate that a new paradigm of reclaiming waste PCBs is shaping.