Abstract
Solvent extraction and flat sheet liquid membrane (FSSLM) transport studies for radiostrontium separation from nitric acid medium were carried out using 4,4'(5')-di-tert-butyl-dicyclohexano-18-crown-6 (DTBCH18C6) as the extractant. Role of diluent on the extraction and transport of Sr(II) was investigated. Encouraging results were obtained during the solvent extraction investigations using 0.1 M DTBCH18C6 in a diluent mixture comprising 80% toluene-20% 1-octanol as the solvent which displayed significantly lower nitric acid extraction as compared to pure 1-octanol as the diluent. However, a saturation transport value for Sr(II) was reported at about 60% which was primarily linked to acid transport. The influence of the composition of feed and receiver phase on the transport efficiency was also investigated.
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