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Radiolytic stability of N,N-didodecyl-N’,N’-diethylhexyl diglycolamide

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Abstract

The radiolytic degradation of N,N-di-dodecyl-N′,N′-di-2-ethylhexyl-3-oxapentane-1,5-diamide (D3DEHDGA) was studied at various absorbed doses of γ-radiation. The degradation was assessed by measuring the variation in the extraction behavior of Am(III) in irradiated solvent systems composed of neat D3DEHDGA or 0.1 M D3DEHDGA/n-dodecane in the presence and absence of nitric acid. The distribution ratio of americium (D Am(III)) decreased with increase of absorbed dose. The presence of n-dodecane and nitric acid enhanced the radiolytic degradation of the solvent. The third phase formation behavior of Nd(III) decreased with increase of absorbed dose and the third phase was not observed at absorbed doses above 100 kGy. The recovery of Am(III) from the irradiated system was near quantitative in five contacts. The study revealed that the extraction and stripping behavior of the irradiated solvent was quite satisfactory for partitioning of minor actinides from real wastes.

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Acknowledgments

Authors would like to thank Mr. Krishnan, Radiological Dosimetry Section, for providing the 60Co γ-irradiation facility. The authors thank Ms. S. Mohana Priya, PSG College of Technology Coimbatore for her assistance in some experiments. One of the authors, T. G. Srinivasan would like to acknowledge with thanks, the Department of Atomic Energy, India, for the award of “Raja Ramanna Fellowship.”

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Authors and Affiliations

  1. Fuel Chemistry Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603 102, India

    Jammu Ravi, B. Robert Selvan, K. A. Venkatesan, M. P. Antony, T. G. Srinivasan & P. R. Vasudeva Rao

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  1. Jammu Ravi
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  2. B. Robert Selvan
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  3. K. A. Venkatesan
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  4. M. P. Antony
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  5. T. G. Srinivasan
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  6. P. R. Vasudeva Rao
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Correspondence to K. A. Venkatesan.

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Ravi, J., Selvan, B.R., Venkatesan, K.A. et al. Radiolytic stability of N,N-didodecyl-N’,N’-diethylhexyl diglycolamide. J Radioanal Nucl Chem 300, 981–986 (2014). https://doi.org/10.1007/s10967-014-3054-9

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  • DOI: https://doi.org/10.1007/s10967-014-3054-9

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