Facilitated transport of Am(III) through a flat-sheet supported liquid membrane (FSSLM) containing tetra(2-ethyl hexyl) diglycolamide (TEHDGA) as carrier

Facilitated transport of uranium(VI) across supported liquid membranes containing T2EHDGA as the carrier extractant

“…These results indicated that the diffusion of the metal-carrier complex is more important in deciding transport rates as compared to the D U values. This also suggests that the transport is a diffusion controlled process similar to other SLM systems studied earlier [19][20][21].…”

“…Supported liquid membrane studies have revealed that the transport rate of Am(III) using TODGA as the carrier were comparable to that with T2EHDGA [19,20]. Though U transport rate is lower as compared to Am(III) with TODGA, it was of interest to study the transport behaviour for understanding the possible interference during the recovery of minor actinides from HLW with TODGA as the carrier extractant.…”

Facilitated transport of tetravalent plutonium from nitric acid medium using a novel extractant – BenzoDODA

“…It is produced during burning of 10 uranium in nuclear reactors for production of electricity. The spent 11 fuels from nuclear reactors are reprocessed for the recovery of 12 unused uranium and freshly produced plutonium by industrially 13 applied process known as PUREX [1] using 30% TBP in n-paraffin as 14 extractant. During operation of the process, depending on the 15 performance of various process parameters some amount of Pu 16 ($5-10 ppm) remains unrecovered and goes to high level waste 17 (HLW) along with other fission products, structural materials and 18 unrecovered U.…”

“…Therefore, separation of Pu selectively from different 25 matrix having diverse nature is a challenge to the separation 26 scientists. Various ligands have been explored in the last few 27 decades for selective separation of Pu from various waste streams 28 which have been reviewed by O'Boyle et al [2] and Gorden et al [3] 29 in detail. Till to date the only reagent which is used in industrial 30 scale for separation of Pu is tributyl phosphate (TBP) [1] which 31 extracts Pu along with U from nitric acid medium.…”

“…46 It is also found that plutonium is extracted in the form of neutral Solvent extraction (SX) was the method studied in our earlier 53 communications [10,11] [12,13]. Transport rate of various metal ions viz., Am(III) [14], Pd(II) 64 [15] etc., using various novel carrier molecules in SLM mode was 65 also investigated by us. But SLM transport studies of Pu(IV) using (Table 1).…”