Trans-uranium extraction

TRUEX (TRans Uranium Extraction) U, Np, Pu, Am recovery CMPO-P TBP/ paraffinic hydrocarbon Schulz and Horwitz (1988)... 

Kannan, S. Chetty, K.V. Venugopal, V. Drew, M.G.B. Extraction and coordination studies of the unexplored bifunctional ligand carbamoyl methyl sulfoxide (CMSO) with uranium(VI) and cerium(III) nitrates. Synthesis and structures of [U02(N03) 2(PhSOCH2CONiBu2)] and fCe(NOi)i(PhSOCn2CONBLi2)2, Dalton Trans. (2004) 3604-3610. 

Such experiments show that oxalate, tartrate, and citrate give fairly strong complexes, and indeed these mixtures do not suffer quite such rapid oxidation as the other systems (57, 70). Stability constants for the complexing of U(III) by acetate, 2-hydroxy-2-methylpropionate, nitriloacetate, trans-cyclohexyl-1,2-diaminotetraacetate, ethylenedi-amine tetraacetate, and diethylenetriamine pentaacetate have been reported, but no pure compounds have been isolated (71). Thiocyanate also accelerates oxidation of the uranium, but the blue complex that is formed can be extracted with triethyl phosphate, tributyl phosphate, or better, trioctyl phosphine oxide the organic extract decomposes only slowly (45, 72). 

Full trans-uranic multi-recycle is employed to extract the full energy content from the uranium ore, and to consign only fission products (and trace recycle/refabrication losses) to waste. A millennium of global energy supply can be supported by the currently known plus speculative uranium resource base recoverable at <130 /kg. 

Bell TJ, Dceda Y (2011) The application of novel hydrophobic ionic liquids to the extraction of uranium(VI) from nitric acid mediiun and a determination of the uranyl complexes formed. Dalton Trans 40 10125-10130... 

---