Supercritical fluid extraction of toxic heavy metals and uranium from acidic solutions with sulfur-containing organophosphorus reagents

被引：39

作者：

Lin, YH

Liu, CX

Wu, H

Yak, HK

Wai, CM

机构：

[1] Pacific NW Natl Lab, Richland, WA 99352 USA

[2] Chung Yuan Christian Univ, Dept Chem, Chungli 320, Taiwan

[3] Univ Idaho, Dept Chem, Moscow, ID 83844 USA

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2003年 / 42卷 / 07期

关键词：

D O I：

10.1021/ie020804i

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The feasibility of using sulfur-containing organophosphorus reagents for the chelation-supercritical fluid extraction (SFE) of toxic heavy metals and uranium from acidic media was investigated. The SFE experiments were conducted in a specially designed flow-through liquid extractor. Effective extraction of the metal ions from various acidic media was demonstrated. The effect of the ligand concentration in supercritical CO2 on the kinetics of metal extraction was studied. A simplified model is used to describe the extraction kinetics, and good agreement of experimental data with the equilibrium-based model is achieved.

引用

收藏

页码：1400 / 1405

页数：6

相关论文

共 27 条

[1] Modelling of the extraction of uranium with supercritical carbon dioxide [J].

Clifford, AA ;

Zhu, S ;

Smart, NG ;

Lin, YH ;

Wai, CM ;

Yoshida, Z ;

Meguro, Y ;

Iso, S .

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, 2001, 38 (06) :433-438

[2]

CUSSLER EL, 1995, DIFFUSION MASS TRANF

[3] Application of supercritical fluids to the reactive extraction and analysis of toxic heavy metals from environmental matrices-system optimisation [J].

Elshani, S ;

Smart, NG ;

Lin, YH ;

Wai, CM .

SEPARATION SCIENCE AND TECHNOLOGY, 2001, 36 (5-6) :1197-1210

[4] Supercritical carbon dioxide extraction of metals from aqueous solutions: a review [J].

Erkey, C .

JOURNAL OF SUPERCRITICAL FLUIDS, 2000, 17 (03) :259-287

[5] EXTRACTION AND SEPARATION OF MOLYBDENUM AND VANADIUM USING BIS(2-ETHYLHEXYL)MONOTHIOPHOSPHORIC ACID AND BIS(2-ETHYLHEXYL)PHOSPHORIC ACID [J].

HIRAI, T ;

HASHIMOTO, T ;

TSUBOI, I ;

HINO, A ;

KOMASAWA, I .

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 1995, 28 (01) :85-90

[6] EXTRACTION OF METAL-IONS FROM LIQUID AND SOLID MATERIALS BY SUPERCRITICAL CARBON-DIOXIDE [J].

LAINTZ, KE ;

WAI, CM ;

YONKER, CR ;

SMITH, RD .

ANALYTICAL CHEMISTRY, 1992, 64 (22) :2875-2878

[7]

LEAL G, 1992, LAMINAR FLOW CONVECT

[8] SUPERCRITICAL-FLUID EXTRACTION OF LANTHANIDES WITH FLUORINATED BETA-DIKETONES AND TRIBUTYL-PHOSPHATE [J].

LIN, YH ;

WAI, CM .

ANALYTICAL CHEMISTRY, 1994, 66 (13) :1971-1975

[9] SUPERCRITICAL-FLUID EXTRACTION OF LANTHANIDES AND ACTINIDES FROM SOLID MATERIALS WITH A FLUORINATED BETA-DIKETONE [J].

LIN, YH ;

BRAUER, RD ;

LAINTZ, KE ;

WAI, CM .

ANALYTICAL CHEMISTRY, 1993, 65 (18) :2549-2551

[10] SUPERCRITICAL-FLUID EXTRACTION AND CHROMATOGRAPHY OF METAL-CHELATES AND ORGANOMETALLIC COMPOUNDS [J].

LIN, YH ;

SMART, NG ;

WAI, CM .

TRAC-TRENDS IN ANALYTICAL CHEMISTRY, 1995, 14 (03) :123-133