Carrier facilitated transport of thorium from HCl medium using Cyanex 923 in n-dodecane containing supported liquid membrane

被引：6
|
作者：
Dinkar, A. K. [1 ]
Singh, Suman Kumar [1 ]
Tripathi, S. C. [1 ]
Gandhi, P. M. [1 ]
Verma, R. [2 ]
Reddy, A. V. R. [2 ]
机构：
[1] Bhabha Atom Res Ctr, Fuel Reproc Div, Bombay 400085, Maharashtra, India
[2] Bhabha Atom Res Ctr, Div Analyt Chem, Bombay 400085, Maharashtra, India
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2013年 / 298卷 / 01期
关键词：
Supported liquid membrane; Thorium transport; Cyanex; 923; Radioanalytical waste; Flux; Permeability coefficient; PHOSPHORIC-ACID MEDIUM; MEDIATED TRANSPORT; SEPARATION; URANIUM; EXTRACTION; RECOVERY;
D O I：
10.1007/s10967-013-2576-x
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Present studies deal with supported liquid membrane (SLM) technique for the separation of thorium from hydrochloric acid (HCl) medium using Cyanex 923 as a carrier. Effects of feed acidity, strippant, and membrane pore size and membrane thickness on the transport of thorium have been studied in detail. The optimized parameters were applied for separation of thorium from a radioanalytical waste. Stability of the membrane and membrane support was investigated. Transport of thorium increased from 78.3 to about 93.7 % with increase in acidity from 0.5 to 2 M using 0.3 M Cyanex 923 in n-dodecane as carrier and 2 M ammonium carbonate as stripping phase. The transport of thorium decreased above 2 M HCl. An attempt was made to model the physicochemical transport of thorium in SLM and understand the mechanism of thorium transport.
引用
收藏
页码：707 / 715
页数：9
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