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SOLVENT EXTRACTION OF ANTIMONY (III), BISMUTH (HI), LEAD (II) AND TIN (IV) WITH BIS(2,4...
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SOLVENT EXTRACTION OF ANTIMONY (III), BISMUTH (HI), LEAD (II) AND TIN (IV) WITH BIS(2,4,4-TRIMETHYLPENTYL)PHOSPHINODITHIOIC ACID (CYANEX 301®)
作者:
S. FACON,
G. COTE,
D. BAUER,
期刊:
Solvent Extraction and Ion Exchange
(Taylor Available online 1991)
卷期:
Volume 9,
issue 5
页码: 717-734
ISSN:0736-6299
年代: 1991
DOI:10.1080/07366299108918080
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The solvent extraction of antimony (in), bismuth (111), lead (II) and tin (IV) from aqueous hydrochloric acid solutions by bis(2,4,4-trimethylpentyl) phosphinodithioic acid (Cyanex 301® denoted HL) in kerosene + 10 % v/v n-decanol was investigated. Lead (II), tin (IV), bismuth (III) and antimony (III) are efficiently extracted by Cyanex 301® up to about 5, 6, 9 and 11 mol.L1−HCl, respectively. The corresponding extracted species were identified as PbL2, SnCl2L2, BiL3and SMvj. However, it was observed that Sn (IV) can be moderately extracted from the aqueous phase by the mere mixture of kerosene and n-decanol above 9 mol.L1−HCl. In all cases, extraction equilibrium was reached within a few minutes. Finally, a thermodynamic modelling of the extraction system was developed in the particular case of lead (II).
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