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Recovery of Uranium and Plutonium from Waste Matrices Using Supercritical Fluid Extraction

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DOI: 10.4236/ajac.2012.312A121    3,511 Downloads   5,717 Views   Citations

ABSTRACT

Supercritical fluid extraction (SFE) of plutonium in its nitrate form from actual waste, i.e. plutonium bearing cellulose matrix was demonstrated using 0.1 litre capacity extraction vessel. Complete recovery of plutonium was demonstrated using modified supercritical carbon dioxide (Sc-CO2), i.e. Sc-CO2 containing octylphenyl-N, N-diisobutyl-carbamoyl- methylphosphine oxide (φCMPO). Near complete recovery of uranium was demonstrated from simulated waste matri- ces, i.e. uranium bearing teflon, glass and cellulose matrices using preparative scale SFE, i.e. from 1 litre capacity ex- traction vessel. The recovery of uranium was established using Sc-CO2 modified with acetyl acetone.


Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

K. Sujatha, K. Pitchaiah, N. Sivaraman, T. Srinivasan and P. Vasudeva Rao, "Recovery of Uranium and Plutonium from Waste Matrices Using Supercritical Fluid Extraction," American Journal of Analytical Chemistry, Vol. 3 No. 12A, 2012, pp. 916-922. doi: 10.4236/ajac.2012.312A121.

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