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Hydrothermal Treatment of Radioactive Waste: Solidification of High-Level Radioactive Waste by Hydrothermal Hot-Pressing

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Abstract

Simulated high-level radioactive waste was immobilized into a silica matrix by hydrothermal hot-pressing. The optimum conditions to produce a waste form with high mechanical strength and low leachability were determined as follows; starting composition: 21.8wt% waste, 10wt% A1(0H)3, 47.7wt% low-quartz and 20.5wt% amorphous aluminosilicate with the addition of 10N NaOH solution (2.5 cm3/20g of starting powder), reaction temperature: 350 °C, reaction pressure: 66 MPa, reaction time: 6 hours.

The waste form produced under the optimum conditions was mainly composed of low-quartz of the matrix and the waste components (Fe2O3, CeO2, ZrO2). It was porous, apparent density 2.3 g/cm3, porosity over 20%, and BET specific surface area m2/g. It had high mechanical strength, compressive strength 200MPa. The leach rate of the waste form, determined by static leach tests at 90°C in distilled water for 28 days, was much lower than a concrete waste form and was comparable with glass and ceramic waste forms. The waste form was stable under hydrothermal conditions in comparison with a glass waste form. It had high thermal and thermal shock resistance. Its thermal conductivity was about 0.01 J/cm·sec·K, a value similar to that of a glass waste form.

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References

  1. G.H.Friedman and J.E.Sanders, How sediments Become Sedimentary Rocks, in Principles of Sedimentology, John Wiley & Sons, New York, 1978, pp. 143–163.

    Google Scholar 

  2. N.Yamasaki, K.Yanagisawa, M.Nishioka and S.Kanahara, A Hydrothermal Hot- Pressing Method: Apparatus and Application, J.Mater.Sci. Letters,5[3], 355–356 (1986)

    Google Scholar 

  3. N.Yamasaki, M.Nishioka, K.Yanagisawa and S.Kanahara, Aggregate Formation of Silica under Hydrothermal Conditions, Yogyo-Kyokai-Shi, 92 [3], 150–152 (1984) (in Japanease)

    Google Scholar 

  4. N.Yamasaki, K.Yanagisawa and M.Nishioka, Hydrothermal Immobilization of Glass Powder Containing Simulated High Level Radioactive Waste, J.At.Energy Soc.Japan, 28 [3], 266–273 (1986) (in Japanease)

    Google Scholar 

  5. M.Nishioka, K.Yanagisawa and N.Yamasaki, Solidification of Glass Powder by A Hydrothermal Hot-Pressing Technique, Yogyo-Kyokai-Shi, 94[11], 1119–1124 (1986)

    Google Scholar 

  6. K.Yanagisawa, M.Nishioka and N.Yamasaki, Densification Process of Borosilicate Glass Powders under Hydrothermal Hot-Pressing Conditions, J.Mater.Sci., 24[11], 4025–4056 (1989)

    Google Scholar 

  7. K.Yanagisawa, M.Nishioka and N.Yamasaki, Solidification of Powders in Si02-Fe203 and Si02-Zr02 System by Hydrothermal Hot-Pressing, Yogyo-Kkokai-Shi, 94 [11], 1193–1196 (1986) (In Japanese)

    Google Scholar 

  8. N.Yamasaki, K.Yanagisawa and N.Kakiuchi, Production of Hydroxyapatite- Glass Compacts by Hydrothermal Hot-Pressing, J.Mater.Res., in press.

    Google Scholar 

  9. K.Matsuoka, Y.Kuwabara, N.Yamasaki, H.Mitsushio, J.Yamazaki, Hot-Pressing of Calcium Carbonate under Hydrothermal Conditions, Rep.Res.Lab.Hydrothermal Chem., 3 [3], 8–11 (1979) (in Japanease)

    Google Scholar 

  10. H.Nishizawa, H.Tebika and N.Yamasaki, Fabrication of Stabilized Zirconia Compressed Body under Hydrothetmal Conditions and Its Sintering, Yogyo-Kyokai-Shi, 92 [7], 420–421 (1984) (in Japanease)

    Google Scholar 

  11. K.Ioku, T.Kai, M.Nishioka, K.Yanagisawa and N.Yamasaki, Low Temperature Sintering of Hydroxyapatite Ultra-Fine Crystals by Hydrothermal Hot-Pressing, J.Mater.Sci.Letters, to be published.

    Google Scholar 

  12. N.Yamasaki, K.Yanagisawa, S.Kanahara, M.Nishioka, K.Matsuoka and J.Yamazaki, Immobilization of Radioactive Wastes in Hydrothermal Synthetic Rock: Lithification of Silica Powder, J.Nucl.Sci.Technol., 21[1], 71–73 (1984)

    Google Scholar 

  13. K.Yanagisawa, M.Nishioka and N.Yamasaki, Immobilization of Radioactive Wastes in Hydrothermal Synthetic Rock III, Propreties of Waste Form Containing Simulated High-Level Radioactive Waste, J.Nucl.Sci.Technol., 23[6], 550–558 (1986)

    Google Scholar 

  14. K.Yanagisawa, M.Nishioka and N.Yamasaki, Immobilization of Radioactive Wastes by Hydrothermal Hot-Pressing, Am.Ceram.Soc.Bull., 64[12], 1563–1567 (1985)

    Google Scholar 

  15. N.Yamasaki, M.Nishioka and K.Yanagisawa, Immobilization of Simulated HLW by Hydrothermal Hot-Pressing of Glass Powder, J.At.Energy Soc.Japan,30 [9], 815–820 (1988) (in Japanease)

    Google Scholar 

  16. N.Yamasaki, K.Yanagisawa, K.Kinoshita and T.Kashiwai, Solidification of Waste Containing Sodium Borate by Hydrothermal Hot-Pressing, J.At.Energy Soc.Japan, 30 [8], 714–724 (1988) (in Japanease)

    Google Scholar 

  17. K.Yanagisawa, M.Nishioka and N.Yamasaki, Immobilization of Low-Level Radioactive Waste Containing Sodium Sulfate by Hydrothermal Hot-Pressing, J.Nucl.Sci.Technol., 26[3], 395–397 (1989)

    Google Scholar 

  18. G.L.McVay and C.Q.Buckwalter, Effect of Iron on Waste-Glass Leaching, J.Am.Ceram.Soc., 66[3], 170–174 (1983)

    Google Scholar 

  19. T.S.Bernadzikowski, J.S.Allender, J.A.Stone, D.E.Gordon, T.H.Gould,Jr, and C.F.Westberry, High-Level Nuclear Waste Performance Evaluation, Am.Ceram.Soc.Bull., 62[12], 1364–1368, 1390 (1983)

    Google Scholar 

  20. A.E.Ringwood, Safe Disposal of High Level Nuclear Reactor Wastes: A New Strategy, Australian Nat.Univ.Press, Camberra, 1978, pp. 1–62.

    Google Scholar 

  21. G.J.McCarthy and M.T.Davidson, Ceramic Nuclear Waste Form I, Crystal Chemistry and Phase Formation, Am.Ceram.Soc.Bull., 54[9], 782–786 (1975)

    Google Scholar 

  22. G.J.McCarthy and M.T.Davidson, Ceramic Nuclear Waste Form II A Ceramic Waste Composite Prepared by Hot Pressing, Am.Ceram.Soc.Bull., 55[2], 190–194 (1976)

    Google Scholar 

  23. G.J.McCarthy, High-Level Waste Ceramics: Materials Considerations, Process Simulation, and Product Characterization, Nucl.Technol., 32[1], 92–105 (1977)

    Google Scholar 

  24. A.E.Ringwood, S.E.Kesson, N.G.Ware, W.Hibberson and A.Major, Immobilization of High Level Nuclear Reactor Wastes in SYNR0C, Nature, 278, 219–223 (1979)

    Google Scholar 

  25. W.J.Buyk, D.J.Cassidy, C.E.Webb and J.L.Woolfrey, Fabrication Studies on Perovskite, Zirconolite, Barium Aluminum Titanate, and Synroc-B, Am.Ceram.Soc.Bull., 60[12], 1284–1288 (1981)

    Google Scholar 

  26. A.B.Harker, C.M.Jantzen, P.E.Morgan and D.R.Clarke, Tailored Ceramic Nuclear Waste Forms: Preparation and Characterization, in Scientific Basis for Nuclear Waste Management III, ed. J.G.Moore, Plenum, 1981, pp. 139–146.

    Google Scholar 

  27. P.E.Morgan, D.R.Clarke, C.M.Jantzen and A.B.Harker, High-Alumina Tailored Nuclear Waste Ceramics, J.Am.Ceram.Soc.,64[5], 249–258 (1981)

    Google Scholar 

  28. D.R.Clarke, C.M.Jantzen and A.B.Harker, Dissolution of Tailored Ceramic Nuclear Waste Form, Nucl.Chem.Waste Manage., 3[1], 59–66 (1982)

    Google Scholar 

  29. L.R.Dole, J.G.Moore, G.C.Rogers, G.A.West, H.E.Devaney, M.T.Morgan, E.M.McDaniel and J.H.Kessler, Cementitious Radioactive Waste Hosts Formed under Elevated Temperatures and Pressures (FUETAP Concretes), in Scientific Basis for Nuclear Waste Management IV, ed. S.V.Topp, North-Holland, 1982, pp 585–593.

    Google Scholar 

  30. B.E.Scheetz, D.M.Roy, C.Tanner, M.W.Barnes, M.W.Grutzeck and S.D.Atkins, Properties of Cement-Solidified Radioactive Waste Forms with High Levels of Loading, Am.Ceram.Soc.Bull.,64[6], 687–690 (1985)

    Google Scholar 

  31. T.Banba, H.Kimura, M.Senou, H.Mitamura, U.Kiriyama, T.Furuya, S.Tashiro, K.Araki and H.Amano, Study of Actual and Aimulated HLW Composition, JAERI-memo 8982 (1980) (in Japanese)

    Google Scholar 

  32. C.Q.Buckwalter and L.R.Pederson, Inhibition of Nuclear Waste Glass Leaching by Chemisorption, J.Am.Ceram.Soc., 65[9], 431–436 (1982)

    Google Scholar 

  33. J.E.Mendel, R.P.Tarcotte and J.H.Wastsik,Jr., Leaching Test Methods for Waste Forms, Trans.Am.Nucl.Soc., 34193–194 (1980)

    Google Scholar 

  34. D.M.Strachan, B.O.Barnes and R.P.Tarcotte, Standard Leach Tests for Nuclear Waste Materials, in Scientific Basis for Nuclear Waste Management III, ed. J.G.Moore, Plenum, 1981, pp 347–354.

    Google Scholar 

  35. K.Yanagisawa, M.Nishioka and N.Yamasaki, Immobilization of Radioactive Wastes in Hydrothermal Synthetic Rock fl, Hydrothermal Synthesis of Pollucite, J.Nucl.Sci.Technol., 21[7], 558–560 (1984)

    Google Scholar 

  36. K.Yanagisawa, M.Nishioka and N.Yamasaki, Immobilization of Cesium into Pollucite Structure by Hydrothermal Hot-Pressing, J.Nucl.Sci.Technol., 26[3], 395–397 (1989)

    Google Scholar 

  37. F.Kamei, H.Igarashi, N.Sasaki and H.Nagaki, Preprint 1983 Annu. Mtg. At. Energy Soc.Japan, F34, (1983) (in Japanease)

    Google Scholar 

  38. K.Ishiguro, N.Kawanishi, N.Sasaki, H.Nagaki and M.Yamamoto, Growth of Surface Layer during The Leaching of The Simulated Waste Glass and Its Barrier Effects on The Leaching, in Scientific Basis for Nuclear Waste ManagementVI, ed. D.G.Brookins, Plenum, 1983, pp 135–142.

    Google Scholar 

  39. S.Komarneni, R.Roy and D.M.Roy, Evaluation of Strontium Molybdate (SrMoO) in Repository Simulating Tests, Nucl.Technol., 62, 71–74 (1983)

    Google Scholar 

  40. D.R.Clarke, Preferencial Dissolution of an Intergranular Amorphous Phase in A Nuclear Waste Ceramics, J.Am.Ceram.Soc., 64[6], C89–90 (1981)

    Google Scholar 

  41. F.J.Ryerson, F.Bazan, and J.H.Campbell, Dissolution of a Nuclear Waste Ceramics: An Experimental and Modeling Study, J.Am.Ceram.Soc., 66[6], 462–470 (1983)

    Google Scholar 

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Authors and Affiliations

  1. Research Laboratory of Hydrothermal Chemistry, Faculty of Science, Kochi University, Akebono-cho 2-5-1, Kochi-shi, 780, Japan

    Kazumichi Yanagisawa, Mamoru Nishioka & Nakamichi Yamasaki

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  1. Kazumichi Yanagisawa
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  2. Mamoru Nishioka
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  3. Nakamichi Yamasaki
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Shigeyuki Sōmiya Masao Doyama Masaki Hasegawa Yoshitaka Agata

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© 1990 Elsevier Science Publishers Ltd.

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Yanagisawa, K., Nishioka, M., Yamasaki, N. (1990). Hydrothermal Treatment of Radioactive Waste: Solidification of High-Level Radioactive Waste by Hydrothermal Hot-Pressing. In: Sōmiya, S., Doyama, M., Hasegawa, M., Agata, Y. (eds) Transactions of the Materials Research Society of Japan. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0789-8_31

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  • DOI: https://doi.org/10.1007/978-94-009-0789-8_31

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-6842-0

  • Online ISBN: 978-94-009-0789-8

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