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Dynamics of gas release during thermal oxidation of TBP solutions in Isopar-M in two-phase system

Published online by Cambridge University Press:  04 March 2018

Elena V. Belova ,
Zayana V. Dzhivanova ,
Boris F. Myasoedov  and
Sergey V. Stefanovsky
Elena V. Belova
Affiliation:
Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Science (IPCE RAS), Leninskii av. 31/4, Moscow 119071 Russia
Zayana V. Dzhivanova
Affiliation:
Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Science (IPCE RAS), Leninskii av. 31/4, Moscow 119071 Russia
Boris F. Myasoedov
Affiliation:
Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Science (IPCE RAS), Leninskii av. 31/4, Moscow 119071 Russia
Sergey V. Stefanovsky*
Affiliation:
Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Science (IPCE RAS), Leninskii av. 31/4, Moscow 119071 Russia
*
*(Email: [email protected])
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Abstract

The dynamics of the gas release at thermal oxidation of the two-phase systems of 30% solution of tri-n-butyl phosphate (TBP) in isoparaffinic diluent Isopar M – aqueous solution of 4.3, 8.2 and 12 mol/L of HNO3 has been investigated within the temperature range from 70°C to 110°C. The effect of pre-irradiation of the system TBP–Isopar-M–HNO3 on the kinetics of its thermolysis has been determined. All of the samples were irradiated with an electron accelerator at a dose rate of 10 kGy/h up to integrated doses of 0.5, 1 and 2 MGy. The parameters of heat and gas emission during thermolysis of the tested extraction system in an open apparatus have been determined experimentally. It has been demonstrated, that there are no conditions for extension of autocatalytic oxidation under heat treatment of two-phase extraction systems in open vessels.

Keywords

electron irradiationwaste managementnuclear materials
Type
Articles
Information
MRS Advances , Volume 3 , Issue 21: Scientific Basis for Nuclear Waste Management XLI , 2018 , pp. 1181 - 1190
Copyright
Copyright © Materials Research Society 2018 

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References

REFERENCES

Egorov, G.F., Afanasiev, O.P., Nazin, E.R., Kazarinov, V.E., Radiochemistry. 38, 531 (1996).Google Scholar
Belova, E.V., Egorov, G.F., Nazin, E.R., Radiochemistry. 42, 238 (2000).Google Scholar
Emergency situations at the enterprises of radiochemical production, Report (A.A. Bochvar High-Technology Research Institute of Inorganic Materials. Moscow, 1993).Google Scholar
Paddleford, D., Hou, Y., Barefield, Е., Tedder, D., Abbel-Khalik, S., Thermal Decomposition of Nitrated Tributylphosphate, Final Report (Savanna River Company, 1995).Google Scholar
Usachev, V.N., Markov, G.S., Radiochemistry, 45, 1 (2003).Google Scholar
Rodin, A.V., Belova, E.V., Nazin, E.R., Tananaev, I.G., Myasoedov, B.F., in International Conference on Nonisothermal Phenomena & Processes: from Thermal Explosion Theory to Structural Macrokinetics, devoted to the 80th birthday Prof. Merzhanov, Alexander G.» Chernogolovka, Russia, 2011), p. 107.Google Scholar
Rudisill, T.S., Crooks, W.J., Initiation Temperatures for runaway Tri-n-Butil Phospate /Nitric Acid reaction, WSRC-MS-2001-00214 (Westinghouse Savannah River Company, Aiken, South Carolina, 2001).Google Scholar
Barney, G.S. and Cooper, T.D., The chemistry of TBP at elevated temperature in the Pu finishing plant process vessels. Westinghouse Hanford Company report, WHC-EP-0737, (Westinghouse Hanford Co., 1994) 65 pGoogle Scholar
Robinson, R., Gutowski, D., Yeniscavich, W., Control of Red Oil Explosions in Defense Nuclear Facilities. Technical Report DNFSB/TECH-33, (Defense Nuclear Facilities Safety Board, 2003).Google Scholar
Belova, E.V., Dzhivanova, Z.V., Tkhorzhnitskii, G.P., Stefanovsky, S.V., and Myasoedov, B.F., Radiochemistry. 58, 426 (2016).Google Scholar
Vladimirova, M.V., Kulikov, I.A., Kupriy, A.A., Atomic Energy. 71, 333 (1991).Google Scholar
Belova, E.V., Egorov, G.F., Nazin, E.R., Tkhorzhnitskii, G.P., Radiochemistry. 43, 79 (2001).Google Scholar
Egorov, G.F., Belova, E.V., Tkhorzhnitskii, G.P., Tananaev, I.G., Nazin, E.R., Zachinyaev, G.M., Radiochemistry. 50, 171 (2008).Google Scholar