Sustainable recovery of precious metals from end-of-life vehicles shredder residue by a novel hybrid ball-milling and nanoparticles enabled froth flotation process

被引：28
|
作者：
Mallampati, Srinivasa Reddy [1 ]
Lee, Byoung Ho [1 ]
Mitoma, Yoshiharu [2 ]
Simion, Cristian [3 ]
机构：
[1] Univ Ulsan, Dept Civil & Environm Engn, Daehak Ro 93, Ulsan 680749, South Korea
[2] Prefectural Univ Hiroshima, Dept Environm Sci, 562 Nanatsuka Cho, Shobara City, Hiroshima 7270023, Japan
[3] Univ Politehn Bucuresti, Dept Organ Chem, Bucharest 060042, Romania
来源：
JOURNAL OF CLEANER PRODUCTION | 2018年 / 171卷
基金：
新加坡国家研究基金会; 日本学术振兴会;
关键词：
End-of-life vehicles; Automobile shredder residues; E-waste; Precious metals; Ball-milling; Nanoparticles froth flotation; PRINTED-CIRCUIT BOARDS; ELECTRONIC WASTE; HEAVY-METALS; IMMOBILIZATION; COLLECTORS; MANAGEMENT; SEPARATION; SIZE; PLASTICS; CESIUM;
D O I：
10.1016/j.jclepro.2017.09.279
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
It is hereby reported a simple, effective and sustainable method for the recovery of precious metals from end-of-life vehicle shredder residue and/or automobile shredder residue based on a hybrid ball-milling and microbubble froth flotation process. A ball-milling treatment of automobile shredder residue along a mixture of Fe/Ca/CaO nanoparticles had as main result the entrapment of precious metals and in subsidiary an improvement of the floatability of the various size fraction particles (1.0, 0.425, and 0.25 mm, respectively). Therefore, a separation of the settled fraction (poor in precious metals) and the floating fraction yielded a recovery of approximately 83-89% precious metals in the latter. Scanning electron microscopy-energy dispersive X-ray spectroscopy maps of gold (Au), silver (Ag), platinum (Pt), palladium (Pd), Iridium (Ir), and copper (Cu) confirmed that result. (C) 2017 Elsevier Ltd. All rights reserved.
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页码：66 / 75
页数：10
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