Extraction and separation of gold (I) cyanide in polyethylene glycol-based aqueous biphasic systems

被引：49

作者：

Zhang, TX

Li, WJ

Zhou, WJ

Gao, HC

Wu, JG ^{[1
]}

Xu, GX

Chen, J

Liu, HZ

Chen, JY

机构：

[1] Beijing Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China

[2] Beijing Univ, Univ Hong Kong, Joint Lab Rare Earth Mat & Bioinorgan Chem, Beijing 100871, Peoples R China

[3] Inst Precious Met, Kunming 650221, Peoples R China

[4] Chinese Acad Sci, Inst Chem Met, Beijing 100080, Peoples R China

来源：

HYDROMETALLURGY | 2001年 / 62卷 / 01期

基金：

中国国家自然科学基金;

关键词：

extraction; gold (I) cyanide; aqueous biphasic system; polyethylene glycol; partition;

D O I：

10.1016/S0304-386X(01)00179-7

中图分类号：

TF [冶金工业];

学科分类号：

0806 [冶金工程];

摘要：

The extraction of gold (I) cyanide in polyethylene glycol-based aqueous biphasic systems has been investigated. Almost all of gold (I) cyanide (> 96%) was transferred from salt-rich phase into the polyethylene glycol (PEG)-rich phase without addition of any extractant. No significant influence of solution pH on gold (I) cyanide extraction was observed. The aqueous biphasic systems have high capability of extraction. The gold (I) cyanide in the PEG-rich phase can be easily reduced by addition of zinc. The PEG-rich phase could be reused for extraction of gold (I) cyanide without decrease of extraction capability. The PEG/salt aqueous biphasic systems may provide a potential new technique for gold separation from cyanide solutions because all components of systems are virtually nontoxic and nonflammable. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：41 / 46

页数：6

共 20 条

[1]

Affinity partitioning of metal ions in aqueous polyethylene glycol/salt two-phase systems with PEG-Modified chelators [J].