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Thermal decomposition of reversed TALSPEAK solvent

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Abstract

Reversed TALSPEAK (RT) Solvent [0.3 M di-(2-ethyl hexyl) phosphoric acid or D2EPHA in 0.2 M TBP in normal paraffinic diluent] is used as extractant in partitioning of lanthanides and actinides in post-UREX process flow sheets. There is no experimental data available in literature describing pressurization either due to the thermal decomposition or the reaction of RT solvent with nitric acid at elevated temperatures. Experiments were conducted for heating of RT solvent and acid equilibrated RT solvent under closed-vent adiabatic conditions. During these experiments, considerable pressurization was observed. In this paper, results of these experiments are discussed in detail.

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References

  1. Collins ED, Benker D, Bailey PD, Felker LK, Taylor RD, Del Cul GD, Spencer BB, Bond WD, Campbell DO (2005) Hot test evaluation of the reverse TALSPEAK process. In: Proceedings of the Global-2005 international conference, Tsukuba, Japan, 9–13 October 2005

  2. Kumar S, Balasubramonian S, Sinha PK, Sivakumar D, Mudali UK, Natarajan R (2011) Thermophysical properties of reversed TALSPEAK (RT) solvent. J Radioanal Nucl Chem. doi:10.1007/s10967-011-1300-y

  3. Sinha PK, Kumar S, Mudali UK, Natarajan R (2011) Thermal stability of UNEX/HCCD-PEG diluent FS-13. J Radioanal Nucl Chem. doi:10.1007/s10967-011-1179-7

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Authors and Affiliations

  1. Reprocessing Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102, Tamil Nadu, India

    Pranay Kumar Sinha, Shekhar Kumar, U. Kamachi Mudali & R. Natarajan

Authors
  1. Pranay Kumar Sinha
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  2. Shekhar Kumar
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  3. U. Kamachi Mudali
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  4. R. Natarajan
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Correspondence to Shekhar Kumar.

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Sinha, P.K., Kumar, S., Kamachi Mudali, U. et al. Thermal decomposition of reversed TALSPEAK solvent. J Radioanal Nucl Chem 290, 667–674 (2011). https://doi.org/10.1007/s10967-011-1346-x

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  • DOI: https://doi.org/10.1007/s10967-011-1346-x

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