Separation of trivalent actinides and lanthanides using a flat sheet supported liquid membrane containing Cyanex-301 as the carrier

Abstract

The transport behaviour of trivalent actinides, viz. Am 3+, Cm 3+ and lanthanides, viz. La 3+, Eu 3+, Tb 3+, Ho 3+, Yb 3+ and Lu 3+ across a polypropylene based supported liquid membrane containing Cyanex-301 (bis-(2,4,4-trimethyl pentyl)-dithiophosphinic acid) in n-dodecane as the carrier was investigated. The transport rates were in accord with their distribution data as seen from the solvent extraction studies. The trivalent actinides Am 3+ and Cm 3+ could be quantitatively separated from the lanthanides by this membrane based method in 4 and 20 h, respectively, with separation factor values in the range 108–4466.