Selective transport of radio-cesium by supported liquid membranes containing calix[4]crown-6 ligands as the mobile carrier |
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| Authors: | DR Raut PK Mohapatra SA Ansari A Sarkar VK Manchanda |
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| Affiliation: | aRadiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India;bFuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India |
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| Abstract: | Facilitated transport of Cs-137 across supported liquid membranes (SLM) containing a calix-crown ligand viz. caliz4]arene-bis(crown-6) (CC), calix4]arene-bis(o-benzocrown-6) (CBC) or calix4]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. |
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| Keywords: | Facilitated transport Supported liquid membrane Cesium Calix-crown High level nuclear waste |
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