Distribution studies on Th(IV), U(VI) and Pu(IV) using tri-n-butylphosphate and N,N-dialkyl amides
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P. N. Pathak
Summary
Distribution studies on U, Pu and Th have been carried out employing tri-n-butyl phosphate (TBP) as extractant to optimise the conditions for the reprocessing of spent fuel of proposed Th based Advanced Heavy Water Reactor (AHWR). Due to their high basicity and organophilicity straight chain N,N-dialkyl amides have been evaluated for their third phase formation behaviour (usually quantified by limiting organic concentration) during the extraction of thorium vis a vis TBP. Dihexyl derivatives of octanamide (DHOA) and decanamide (DHDA) were found promising in view of higher limiting organic concentration of thorium viz. 33 g and 50 g/L, respectively as compared to 26 g/L for TBP. Extraction profiles of U, Pu and Th have been obtained using these amides and compared with those of TBP. Attempts have also been made to optimise the stripping conditions using aceto-hydroxamic acid (AHA) and acetaldoxime as reductants for the partitioning of Pu from the loaded organic phase.
© by Oldenbourg Wissenschaftsverlag, München
Articles in the same Issue
- Attempts to chemically investigate element 112
- Distribution studies on Th(IV), U(VI) and Pu(IV) using tri-n-butylphosphate and N,N-dialkyl amides
- Solvent extraction studies on Th(IV) and U(VI) using PolyEthylene Glycol (PEG) based aqueous biphasic system (ABS) with 18-crown-6
- The aqueous complexation of thorium with citrate under neutral to basic conditions
- Production of [124I]-iodine on an 11 MeV cyclotron
- Electroplating/electrodissolution/recovery cycle for rhodium target used for an industrial scale cyclotron production of palladium-l03
- Effects of phosphate and ionic strength upon uranium(VI) sorption onto alumina as a function of pH
- Adsorption of lanthanum to goethite in the presence of gluconate
Articles in the same Issue
- Attempts to chemically investigate element 112
- Distribution studies on Th(IV), U(VI) and Pu(IV) using tri-n-butylphosphate and N,N-dialkyl amides
- Solvent extraction studies on Th(IV) and U(VI) using PolyEthylene Glycol (PEG) based aqueous biphasic system (ABS) with 18-crown-6
- The aqueous complexation of thorium with citrate under neutral to basic conditions
- Production of [124I]-iodine on an 11 MeV cyclotron
- Electroplating/electrodissolution/recovery cycle for rhodium target used for an industrial scale cyclotron production of palladium-l03
- Effects of phosphate and ionic strength upon uranium(VI) sorption onto alumina as a function of pH
- Adsorption of lanthanum to goethite in the presence of gluconate
