期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 164, 期 -, 页码 19-27出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2016.03.007
关键词
Copper recovery; Printed circuit boards; Hydrometallurgy; Bispicolylamine resin
资金
- FCT/MEC - Portugal through national funds [UID/QUI/50006/2013]
- FEDER - Portugal [PT2020]
- FCT [SFRH/BD/8729/2012]
The large amount of Cu present in printed circuit boards (PCBs) residues, usually about ten times more than the Cu amount present in rich-content minerals, makes these residues an attractive secondary source of Cu. Thus, the main aim of this work was to develop a simple and nearly-closed two-step process to recover Cu from PCBs residues with high purity. Firstly, a multi-element leaching solution, containing 78% of the total amount of Cu present in the residue together with other metals, was obtained using acidic (HNO3 2 mol/L for 210' at 50 degrees C) conditions. In a second step, a bispicolylamine resin was used to recover Cu with high selectivity from the multi element (59.0% Cu) leaching solution and a final Cu solution with high purity (99.0%) was obtained after eluting, with H2SO4 4 mol/L, the Cu retained in the column. Additionally, the amount of Al (85%) leached from the residue, present in the raffinate, was totally recovered as a solid of Al(OH)(3). (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据