Huang Kui, Guo Jie, Xu Zhenming
School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, People's Republic of China.
J Hazard Mater. 2009 May 30;164(2-3):399-408. doi: 10.1016/j.jhazmat.2008.08.051. Epub 2008 Aug 23.
From the use of renewable resources and environmental protection viewpoints, recycling of waste printed circuit boards (PCBs) receives wide concerns as the amounts of scrap PCBs increases dramatically. However, treatment for waste PCBs is a challenge due to the fact that PCBs are diverse and complex in terms of materials and components makeup as well as the original equipment's manufacturing processes. Recycle technology for waste PCBs in China is still immature. Previous studies focused on metals recovery, but resource utilization for nonmetals and further separation of the mixed metals are relatively fewer. Therefore, it is urgent to develop a proper recycle technology for waste PCBs. In this paper, current status of waste PCBs treatment in China was introduced, and several recycle technologies were analyzed. Some advices against the existing problems during recycling process were presented. Based on circular economy concept in China and complete recycling and resource utilization for all materials, a new environmental-friendly integrated recycling process with no pollution and high efficiency for waste PCBs was provided and discussed in detail.
从可再生资源利用和环境保护的角度来看，随着废弃印刷电路板（PCBs）数量的急剧增加，其回收利用受到广泛关注。然而，由于印刷电路板在材料和部件组成以及原始设备制造工艺方面具有多样性和复杂性，废弃印刷电路板的处理是一项挑战。中国废弃印刷电路板的回收技术仍不成熟。以往的研究主要集中在金属回收方面，但对于非金属的资源利用以及混合金属的进一步分离相对较少。因此，迫切需要开发一种合适的废弃印刷电路板回收技术。本文介绍了中国废弃印刷电路板处理的现状，分析了几种回收技术，并针对回收过程中存在的问题提出了一些建议。基于中国的循环经济理念以及所有材料的完全回收和资源利用，提出并详细讨论了一种新型的、无污染且高效的废弃印刷电路板环保综合回收工艺。
