Selective transport of radio-cesium by supported liquid membranes containing calix[4]crown-6 ligands as the mobile carrier

被引：28
|
作者：
Raut, D. R. [1 ]
Mohapatra, P. K. [1 ]
Ansari, S. A. [1 ]
Sarkar, A. [2 ]
Manchanda, V. K. [1 ]
机构：
[1] Bhabha Atom Res Ctr, Div Radiochem, Bombay 400085, Maharashtra, India
[2] Bhabha Atom Res Ctr, Div Fuel Chem, Bombay 400085, Maharashtra, India
来源：
DESALINATION | 2008年 / 232卷 / 1-3期
关键词：
Facilitated transport; Supported liquid membrane; Cesium; Calix-crown; High level nuclear waste;
D O I：
10.1016/j.desal.2007.10.039
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Facilitated transport of Cs-137 across supported liquid membranes (SLM) containing a calix-crown ligand viz. calix[4]arene-bis(crown-6) (CC), calix[4]arene-bis(o-benzocrown-6) (CBC) or calix[4]arene-bis(napthocrown-6) (CNC) was investigated. The feed consisted of dilute nitric acid solutions while the carrier solutions contained mainly CNC in several organic diluents inside the pores of polypropylene (PP) as well as PTFE flat sheet membranes. PTFE membranes containing CNC in a diluent mixture of 2-nitrophenyloctyl ether (NPOE) and n-dodecane were found to have high stability. Selectivity studies were carried out using simulated high level waste (SHLW) as well as fission products obtained from an irradiated natural uranium target.
引用
收藏
页码：262 / 271
页数：10
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