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An attempt was made in this work to evaluate a simple flat sheet supported liquid membrane technique for the separation of carrier free Y from Sr using two diglycolamide carrier ligands, (i) N,N,N',N'-tetra-n-octyl-diglycolamide (TODGA), and (ii) N,N,N',N'-tetra-(2-ethylhexyl)-diglycolamide (TEHDGA). Various experimental parameters were optimized to get selective transport of Y over Sr. At 6 M HNO feed acidity, >95% Y could be recovered selectively in just 4 h with both the ligands. Under identical experimental conditions, about 0.1% transport of Sr was also recorded which could be completely removed by passing through a Sr selective column to get medical grade Y pure product. A mathematical model equation was also derived and experimentally validated for predicting the transport of Y through membrane.
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| http://dx.doi.org/10.1016/j.apradiso.2021.109604 | DOI Listing |
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