N, N, N′, N′-tetra(2-ethylhexyl) thiodiglycolamide T(2EH)TDGA: A novel ligand for the extraction of palladium from high level liquid waste (HLLW)

Extractive Spectrophotometric Determination of Pd(II) with Sodium Salt of Hexamethyleneiminecarbodithioate

“…Using this property a number of extractive spectrophotometric methods of palladium determination with various reagents such as di-2-pyridyl-methanone-2-(5-nitro)pyridyl hydrazine [11], pyridine-2-acetaldehyde salicyloyl hydrazine [12], di-2-pyridyl ketonebenzoyl hydrazine [13], Isonitroso benzoylacetone [4], o-butyldithiocarbonate [15], pyridoxal-4-phenyl-3-thiosemicarbazone [16], Benzyloxy benzaldehyde thiosemicarbazone (BBTSC) [17], N-ethyl-3-carbazolecarbaxaledehydethiosemicarbazone [18] and α-benzoin oxime (ABO) [19], N,N,N',N'-tetra(2-ethylhexyl) thiodiglycolamide (T(2EH)TDGA) [20].…”

Extraction of palladium(II) from nitric acid solutions with diglycolthioamide

“…The natural abundance of palladium in the earth crust is so low that the available resources seem to meet unlikely the consistently rising demands for palladium in future (Ruhela et al, 2010). However, with the rapid development of nuclear energy, a large amount of palladium is produced as fission product in spent fuel, and most of its isotopes are fortunately non-radioactive (Kolarik and Renard, 2003a,b).…”

“…In previous work, thiodiglycolamide was synthesized by introducing a sulfur atom into diglycolamide to substitute the oxygen atom in the ether linkage for extraction of Pd(II) (Narita et al, 2004;Ruhela et al, 2010Ruhela et al, , 2013. The oxygen atoms in the amido linkages in diglycolamides have not been synthesized and their extraction behaviors also have not been studied before.…”

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

“…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. Also in the operation of the PUREX plant various 19 streams of wastes are generated which contain significant quantity 20 of Pu in presence of other contaminants.…”

“…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).…”