Selective transport of cesium ion in polymeric CTA membrane containing calixcrown ethers

Transport of platinum(IV) through supported liquid membrane (SLM) and polymeric plasticized membrane (PPM)

“…The stability of CTA membrane was confirmed using the same membrane for 20 cycles without any noticeable decrease in the permeability value. Selective transport of cesium over other alkali metal ions was achieved by means of PPM membrane composed of CTA-NPOE/TBPE and calixcrown ethers as carriers [20]. Such membrane showed more rapid transport rate and higher durability that did the corresponding SLM.…”

Hollow fiber supported liquid membrane studies using a process compatible solvent containing calix[4]arene-mono-crown-6 for the recovery of radio-cesium from nuclear waste

“…Subsequently, Afsari et al [24] have separated 137 Cs using flat sheet supported liquid membrane containing several calix-bis-crown-6 extractants in 1,3-alternative conformation and showed highly encouraging results. There are also reports on the cesium transport in polymer inclusion membranes (containing calix-crown-6 ligands) with very high selectivities [25][26][27]. In view of higher flux obtained with the supported liquid membranes, scale up was done with hollow fiber contactors with encouraging results [28].…”

Novel proton-conducting polymer inclusion membranes

“…90 Sr(II) [7,12], Zn(II) [13,14], As(V) [15], Na + [16], K + [17] and 137 Cs + [7,12,18]. Another important application of PIMs is in ion selective membrane electrodes for potentiometric measurements.…”