EVALUATION OF DI(2-ETHYLHEXYL)ISOBUTYRAMIDE (D2EHIBA) AS A PROCESS EXTRACTANT FOR THE RECOVERY OF²³³U FROM IRRADIATED Th

Selective recovery of uranium from THOREX feed by hollow fibre supported liquid membrane technique containing di(2-ethylhexyl) isobutyramide (D2EHIBA) as the carrier

“…1a) has been found to be a promising alternative to TBP for selective recovery of uranium from THOREX feed solution [9][10][11][12]. Our earlier solvent extraction studies on THOREX feed solution (200 g/L Th, 233 U tracer at 4 M HNO 3 ) employing D2EHIBA/n-dodecane revealed that the separation factor (S.F.…”

Elaboration and characterisation of a plasticized cellulose triacetate membrane containing trioctylphosphine oxyde (TOPO): Application to the transport of uranium and molybdenum ions

“…Furthermore, N,N-dialkyl aliphatic amides have received considerable attention as extractants for actinides from acidic media. Branched chain di(2-ethylhexyl) isobutyramide (D2EHIBA) has been synthesized and extensively evaluated as an alternate extractant to TBP for the separation of 233 U from irradiated thorium [20][21][22][23][24]. In addition, carrier mediated transport offers several advantages over classical solvent extraction processes viz.…”

Characterization of the Species Formed during the Extraction of Thorium Employing Tri-n-Butyl Phosphate and N,N-Dihexyl Octanamide as Extractants by Laser Desorption/Ionization Time-of-Flight Mass Spectrometry

“…20,21 We have performed systematic studies using several N,N-dialkyl amides as alternatives to TBP in the plutonium uranium reaction (PUREX) as well as in the thorium extraction (THOREX) processes. 18,[22][23][24][25][26][27][28][29][30] The straight-chain amide, N,N-dihexyl octanamide [DHOA, Figure 1(b)], was found to be the most suitable alternative to TBP for selective recovery of U and Pu from three components (U, Pu and Th) of advanced heavy water reactor (AHWR) spent fuels. [24][25][26] In addition, studies were also carried out to optimize the conditions for the recovery of ~ 100 g L −1 Th(IV) from AHWR raffinate solutions.…”