A novel recovery method of copper from waste printed circuit boards by supercritical methanol process: Preparation of ultrafine copper materials

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 固体废弃物处理与资源化实验室

	A novel recovery method of copper from waste printed circuit boards by supercritical methanol process: Preparation of ultrafine copper materials
	Chen, Mengjun; Zhang, Zhigang; Yu, Gending; Qi, Yingying; Weng, Huiwei; Xiu, Fu-Rong; Zhang, Fu-Shen
刊名	WASTE MANAGEMENT
	2017-02-01
卷号	60 期号:0 页码:643-651
关键词	Waste Pcb Ultrafine Copper Materials Supercritical Methanol
英文摘要	In this study, supercritical methanol (SCM) process was successfully used for the preparation of ultrafine copper materials from waste printed circuit boards (PCBs) after nitric acid pretreatment. Waste PCBs were pretreated twice in nitric acid. Sn and Pb were recovered by the first nitric acid pretreatment. The leach liquor with a high concentration of copper ions after the second nitric acid leaching was subjected to SCM process. The mixture of Cu and Cu2O with poor uniformity of particle size was formed due to the effect of ferric iron contained in the leach liquor of waste PCBs, while more uniform and spherical Cu particles with high monodispersity and smaller size could be prepared after the removal of Fe. The size of Cu particles increased obviously with the decline of SCM temperature, and particles became highly aggregated when the reaction temperature decreased to 300 degrees C. The size of Cu particles decreased markedly with the decrease of initial concentration of copper ion in the leach liquor of waste PCBs. It is believed that the process developed in this study is simple and practical for the preparation of ultrafine copper materials from waste PCBs with the aim of recycling these waste resources as a high value-added product. (C) 2016 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39217]
专题	生态环境研究中心_固体废弃物处理与资源化实验室
推荐引用方式 GB/T 7714	Chen, Mengjun,Zhang, Zhigang,Yu, Gending,et al. A novel recovery method of copper from waste printed circuit boards by supercritical methanol process: Preparation of ultrafine copper materials[J]. WASTE MANAGEMENT,2017,60(0):643-651.
APA	Chen, Mengjun.,Zhang, Zhigang.,Yu, Gending.,Qi, Yingying.,Weng, Huiwei.,...&Zhang, Fu-Shen.(2017).A novel recovery method of copper from waste printed circuit boards by supercritical methanol process: Preparation of ultrafine copper materials.WASTE MANAGEMENT,60(0),643-651.
MLA	Chen, Mengjun,et al."A novel recovery method of copper from waste printed circuit boards by supercritical methanol process: Preparation of ultrafine copper materials".WASTE MANAGEMENT 60.0(2017):643-651.