Extraction Separation of Gold in n-Propyl Alcohol-Ammonium Sulfate Aqueous Two-Phase System

被引：0

作者：

Xiang, Pengzhi ^{[1
,2
]}

Gao, Yuntao ^{[3
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Land Resource Engn, Kunming 650093, Peoples R China

[2] Yunnan Radio & TV Univ, Sch Chem Engn, Kunming 650222, Peoples R China

[3] Yunnan Nationalities Univ, Sch Chem & Biotechnol, Kunming 650031, Peoples R China

来源：

ASIAN JOURNAL OF CHEMISTRY | 2013年 / 25卷 / 03期

关键词：

Extraction; Separation; Gold; n-Propyl alcohol; Ammonium sulfate; METAL-ION SEPARATIONS; LIQUID; PALLADIUM; PLATINUM; BEHAVIOR;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The extraction behaviours of gold(III) in the n-propyl alcohol (PrOH)-ammonium sulfate aqueous two-phase extraction system were investigated. The amount of (NH4)(2)SO4 added, the initial volume of n-propyl alcohol and the acidity of the system are mainly factors that affect the formation and phase separation of the aqueous two-phase system. Gold(III) is found to be extracted into the n-propyl alcohol phase due to the formation of ion pair complex of [Au I-4(-)center dot PrOH2+] in the presence of KI and in hydrochloric acid medium, an extraction rate of 99 % for gold can be achieved under optimized conditions. The proposed method has been applied to the separation of gold from large amount of base metals in synthetic sample and exhibits selectivity to gold(III).

引用

页码：1492 / 1496

页数：5

共 21 条

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

AguinagaDiaz, PA ;

Guzman, RZ .

SEPARATION SCIENCE AND TECHNOLOGY, 1996, 31 (10) :1483-1499

[2]

Cai S. X., 1984, ANAL NOBLE METALS

[3] Purification of glucose oxidase and β-galactosidase by partitioning in a PEG-salt aqueous two-phase system in the presence of PEG-derivatives [J].

Dhoot, Shrikant B. ;

Dalal, Juned M. ;

Gaikar, Vilas G. .

SEPARATION SCIENCE AND TECHNOLOGY, 2007, 42 (08) :1859-1881

[4]

Gao YT, 2001, CHINESE J ANAL CHEM, V29, P901

[5]

[高云涛 Gao Yuntao], 2002, [应用化学, Chinese Journal of Applied Chemistry], V19, P578

[6] Variations of particle size and bed voidage distributions in expanded bed during transient operation processes [J].

Yang, Z ;

Sun, Y .

JOURNAL OF CHROMATOGRAPHY A, 2005, 1077 (02) :143-150

[7] The salting-out effect and phase separation in aqueous solutions of electrolytes and poly(ethylene glycol) [J].

Hey, MJ ;

Jackson, DP ;

Yan, H .

POLYMER, 2005, 46 (08) :2567-2572

[8]

Hogfeldt E., 1982, STABLITY CONSTANTS A

[9] Ionic liquid-based aqueous two-phase system, a sample pretreatment procedure prior to high-performance liquid chromatography of opium alkaloids [J].

Li, SH ;

He, CY ;

Liu, HW ;

Li, K ;

Liu, F .

JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES, 2005, 826 (1-2) :58-62

[10] On the extraction and separation of iodide complex of cadmium(II) in propyl-alcohol ammonium sulfate aqueous biphasic system [J].

Liu, Xiaohai ;

Gao, Yuntao ;

Tang, Runsheng ;

Wang, Wei .

SEPARATION AND PURIFICATION TECHNOLOGY, 2006, 50 (02) :263-266

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