SOLVENT-EXTRACTION OF IRON(III) BY BIS(2,4,4-TRIMETHYLPENTYL) PHOSPHINIC ACID - EXPERIMENTAL EQUILIBRIUM STUDY

被引：30
|
作者：
MIRALLES, N [1 ]
SASTRE, AM [1 ]
FIGUEROLA, E [1 ]
MARTINEZ, M [1 ]
机构：
[1] UNIV POLITECN CATALUNYA,ESCOLA TECN SUPER ENGINYERS IND BARCELONA,DEPT ENGN QUIM,DIAGONAL 647,E-08028 BARCELONA,SPAIN
来源：
HYDROMETALLURGY | 1992年 / 31卷 / 1-2期
关键词：
D O I：
10.1016/0304-386X(92)90104-8
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The extraction of iron(III) from aqueous nitrate solutions by bis(2.4,4-trimethylpentyl) phosphinic acid (Cyanex 272 = HA) dissolved in Isopar-H was studied at 25-degrees-C and 0.1 ionic strength. The distribution of the metal was measured as a function of pH and metal and extractant concentration. The data have been analyzed both graphically and numerically to determine the stoichiometry of extracted species and their equilibrium constants. It was found that iron (III) was extracted into the organic phase by the formation of the species FeA3, FeA3(HA)3 and Fe(NO3)3(HA)3.
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页码：1 / 12
页数：12
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