Consolidation of High-Level Radioactive Wastes into Strontium Titanate by CS Method

Abstract:

Strontium Titanate synroc samples were synthesized by combustion cynthesis (CS). Sr directly took part in the synthesis process. As a result, loading content issue is basically resolved. The products were characterized by density, microhardness X-ray diffraction, and scanning electron microscopy (SEM/EDS). The leaching rate was measured by the method of PCT. The results indicate that the Sr2+-SrTiO3 compound with high density, low leach rate and high property stability and the synthesis process is feasible in technology and economy. It can be concluded that the Strontium Titanate synroc is a perfect material to immobilize HLW Keywords: Strontium Titanate, high-level radioactive waste (HLW), immobilization, self –propagating high –temperatures synthesis (SHS).

• Periodical: Materials Science Forum (Volumes 704-705)
• Pages: 625-630
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.704-705.625
• Online since: December 2011
• Authors: Rui Zhu Zhang, Jie Yang, Da Kao Yan, Zhi Meng Guo, Wan Shan Su
• Keywords: High-Level Radioactive Waste (HLW), Immobilisation, Self-Propagation High-Temperature Synthesis (SHS), Strontium Titanate

References

[1] ZHANG Ruizhu, GUO Zhimeng and LU Xin. et al., Combustion Synthesis of Radioactive Waste Immobilization. Rare Metals, Vol. 24. No, 2 (2005), p.119~124.

[2] ZHANG Ruizhu , GUO Zhimeng , JIA Guangyao. immobilization of Nuclear Waste Strontia by perovskite [J]. Journal of the Chinese Ceramic Society, Vol. 33. No, 8 (2005), p.1045~1048.

[3] W. Wallace, E. Schulz, Philip Horwitz. Chemical Pretreatment of Nuclear Waste for Disposal[M]. New York and London : Plenum Plenum Press, 1994. 12.

[4] A.E. Ringwood, S.E. Kesson, K.D. Reeve, et al., Synrroc [A]. In: Lutze W, Ewing RC, ed. Radioactive Waste Forms for the Forture [M]. Armsterdam : North Holland, 1988: 233.

[5] M. Muthuraman, N. Arul Dhas, K.C. Patil. Commbustion synthesis of oxide materials for nuclear waste immobilization[J]. Bull. Mater. Sci, Vol. 17. No, 6 (1994), pp.977-987.

DOI: 10.1007/bf02757574

[6] I.P. Borovinskaya, T.V. Barinova and V.I. Ratnikov, et al., Consolidation of Radioactives Waste into Mineral-like Material by the SHS Method, [J] Inter. SHS, Vol. 7. No, 1 (1998), pp.129-135.

[7] T.V. Barinova, I.P. Borovinskaya and V.I. Ratnikov, et al., SHS Immobilization of radioactive Wastes, [J]Kay Engineering Materials, Vol. 217(2002), pp.193-200.

DOI: 10.4028/www.scientific.net/kem.217.193

[8] GUO ge-xin, HE Wen-chen, ZHOU Guo-xiang, et, al., Select on Unit Cell of Strontium Titanate during Antiferrodistortive Phase Ttanstion, [J] Journal of Hebei university of Technoligy, Vol. 32. No, 1(2003), pp.31-33.

[9] C.M. Jantzen N.E. Bibler D.C. Beam, et al. standard test method relative to durability of nuclear waste glasses: the product consistency test (PCT) version 5. 0, [S]USA, Oct. 30, (1991).

DOI: 10.2172/6017524