Separation Studies of Uranium and Thorium Using Di-2-Ethylhexyl Isobutyramide (D2EHIBA)

Separation of radioactive metal ions by hollow fiber-supported liquid membrane and permeability analysis

“…5. It is evident that more uranium ions can be extracted than thorium ions because when the concentration of TBP is 5%(v/ v), only uranium ions can be extracted alone (Pathak et al, 1999). Therefore, thorium ions were rejected into the raffinate.…”

“…Therefore, thorium ions were rejected into the raffinate. The uranium in the presence of nitric concentration exists in the form of a UO 2 2+ type species (Clifford et al, 2001;Pathak et al, 1999):The chemical extraction reaction is described (Chimuka et al, 2003;Clifford et al, 2001;Pathak et al, 1999) as follows…”

“…The concentrations of both radioactive metal ions were equal and the concentration of TBP was 5%(v/v) due to that being the optimal concentration (Pathak et al, 1999). The liquid membrane phase was prepared by dissolution of TBP in kerosene.…”

Synergistic Extraction of Copper from Nitrate Solutions Using β-Hydroxy-Naphthaldoxime and Organophosphorus Compounds into Carbon-Tetrachloride

“…Furthermore, the synergistic extraction of metal ions has various advantages over an ordinary solvent extraction system, such as enhancing extractability, widening the optimum extraction pH range, stabilizing extracted species by forming a metal-liganddonor ternary system (adduct), etc. [21] A variety of reagents have been used as extractants in this field, among which organophosphorus donor reagents have attracted special attention. J.-P.…”

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.…”