Kinetic modeling of uranium permeation across a supported liquid membrane employing dinonyl phenyl phosphoric acid (DNPPA) as the carrier

被引：18
|
作者：
Biswas, Sujoy [1 ]
Pathak, P. N. [2 ]
Roy, S. B. [1 ]
机构：
[1] Bhabha Atom Res Ctr, Uranium Extract Div, Bombay 400085, Maharashtra, India
[2] Bhabha Atom Res Ctr, Div Radiochem, Bombay 400085, Maharashtra, India
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2013年 / 19卷 / 02期
关键词：
Uranium; Permeation; Membrane; DNPPA; Kinetic modeling; FACILITATED TRANSPORT; MASS-TRANSFER; EXTRACTION; RECOVERY; SEPARATION; MECHANISM; EUROPIUM(III); MIXTURES;
D O I：
10.1016/j.jiec.2012.09.029
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
This paper reports the permeation of U(VI) from nitric acid medium across polytetrafluoroethylene (PTFE) membrane impregnated with dinonyl phenyl phosphoric acid (DNPPA) as carrier. The effects of various parameters such as nature and concentration of receiver phases, feed acidity, carrier/uranium concentration and membrane thickness were evaluated. 6 M H2SO4 was identified as receiver phase. Experimental data were fitted to a kinetic model to calculate the diffusion coefficient D-(o) and mass transfer coefficients Delta(-1)((a)). The optimized conditions were applied for recovery of uranium from uranyl nitrate raffinate (UNR) waste solution generated during the purification of uranium through U(VI)-HNO3-TBP route. (c) 2012 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：547 / 553
页数：7
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