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Metal extraction by N,N′-dialkyl-N,N′-diaryl-dipicolinamides from nitric acid solutions
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V. A. Babain
Published/Copyright:
September 25, 2009
A study of americium, uranium and europium extraction by various dialkyl-diarylamides of 2,6-pyridine-dicarboxylic (dipicolinic) acid has shown that maximum extractability is achieved by using polar fluorine-substituted diluents. Generally, the diamide extractability is found to increase with the alkyl radical length. We have demonstrated the possibility to separate Am and Eu in solutions with a nitric acid concentration of 0.5–2 mol/l. The extractability of these diamides with respect to the three metals rises with the acid concentration increase to 6 mol/l.
Keywords: Dialkyl-diarylamides of 2,6-pyridine-dicarboxylic (dipicolinic) acid; Extraction; Americium; Uranium; Europium; Polar solvents
Received: 2006-5-25
Accepted: 2006-10-15
Published Online: 2009-9-25
Published in Print: 2007-4-1
© Oldenbourg Wissenschaftsverlag
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Keywords for this article
Dialkyl-diarylamides of 2,6-pyridine-dicarboxylic (dipicolinic) acid;
Extraction;
Americium;
Uranium;
Europium;
Polar solvents
Articles in the same Issue
- Experimental determination of deuteron-induced activation cross sections of yttrium
- Solubility and redox reactions of Pu(IV) hydrous oxide: Evidence for the formation of PuO2+x(s, hyd)
- Properties of U(VI)/U(IV) and Fe(III)/Fe(II) pairs and equilibrium U(VI) + 2Fe(II) ⇄ U(IV) + 2Fe(III) in solutions of unsaturated heteropolytungstates K10P2W17O61 and K8SiW11O39
- Metal extraction by N,N′-dialkyl-N,N′-diaryl-dipicolinamides from nitric acid solutions
- Preparation of spherical, dense uranium fuel kernels with carbon
- Preparation and characterization of working standards for 238Pu
- Trace element intake and dietary status of nuts consumed in Pakistan: study using INAA
