Synergistic extraction of uranium from acidic sulfate leach liquor using D2EHPA mixed with TOPO

被引：0
|
作者：
M. M. Ali
M. H. Taha
H. M. Killa
S. Abd El Wanees
M. M. El-Maadawy
机构：
[1] Nuclear Materials Authority,Chemistry Department, Faculty of Science
[2] Zagazig University,undefined
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2014年 / 300卷
关键词：
Uranium; Synergistic; D; EHPA and TOPO mixture; Solvent extraction; Leaching;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Uranium extraction from sulfate leach liquor acid by D2EHPA and TOPO mixture in kerosene was investigated. The effect of different factors affecting the extraction mechanism such as sulfate leach liquor acid, D2EHPA and TOPO concentrations and temperature have been studied. The mathematical treatment for the obtained date suggested that the composition of synergistic extraction species is (UO2(D)2T). The logarithm of the apparent equilibrium constant, log Kex, of synergistic extraction reaction has been evaluated, to be 3.35 ± 0.1. The effect of temperature on extraction process was investigated and the apparent values of the thermodynamics parameters (∆H, ∆G and ∆S) were 38.2 kJ/mol, −19.1 kJ/mol and 192.5 J/mol respectively.
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页码：963 / 967
页数：4
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