Recovery of gold from hydrometallurgical leaching solution of electronic waste via spontaneous reduction by polyaniline

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2017专题

	Recovery of gold from hydrometallurgical leaching solution of electronic waste via spontaneous reduction by polyaniline
	Wu, Yuanzhao; Fang, Qingming; Yi, Xiaohui; Liu, Gang; Li, Run-Wei
刊名	PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
	2017
卷号	27 期号:4 页码:514-519
ISSN号	1002-0071
英文摘要	The present study is primarily designed to develop an environmentally-benign approach for the recovery of precious metals, especially gold, from the ever increasingly-discarded electronic wastes (e-waste). By coupling the metal reduction process with an increase in the intrinsic oxidation state of the aniline polymers, and the subsequent re-protonation and reduction of the intrinsically oxidized polymer to the protonated emeraldine (EM) salt, polyaniline (PANi) films and polyaniline coated cotton fibers are able to recover metallic gold from acid/halide leaching solutions of electronic wastes spontaneously and sustainably. The current technique, which does not require the use of extensive extracting reagents or external energy input, can recover as much as 90% of gold from the leaching acidic solutions. The regeneration of polyaniline after gold recovery, as confirmed by the X-ray photoelectron spectroscopy measurements, promises the continuous operation using the current approach. The as-recovered elemental gold can be further concentrated and purified by incineration in air.
公开日期	2017-12-25
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/13704]
专题	2017专题
推荐引用方式 GB/T 7714	Wu, Yuanzhao,Fang, Qingming,Yi, Xiaohui,et al. Recovery of gold from hydrometallurgical leaching solution of electronic waste via spontaneous reduction by polyaniline[J]. PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL,2017,27(4):514-519.
APA	Wu, Yuanzhao,Fang, Qingming,Yi, Xiaohui,Liu, Gang,&Li, Run-Wei.(2017).Recovery of gold from hydrometallurgical leaching solution of electronic waste via spontaneous reduction by polyaniline.PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL,27(4),514-519.
MLA	Wu, Yuanzhao,et al."Recovery of gold from hydrometallurgical leaching solution of electronic waste via spontaneous reduction by polyaniline".PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL 27.4(2017):514-519.