Abstract
SAP (SiO2-Al2O3-P2O5) composite has been recently studied in KAERI to deal with the immobilization of radioactive salt waste, one of the most problematic wastes in the pyro-chemical process. Highly unstable salt waste was successfully converted into stable compounds by the dechlorination process with SAPs, and then a durable waste form with a high waste loading was produced when adding glassy materials to dechlorination product. In the present study, U-SAP composite which is SAP bearing glassy component (Boron) was synthesized to remove the adding and mixing steps of glassy materials for a monolithic wasteform. With U-SAPs prepared by a sol-gel process, a series of wasteforms were fabricated to identify a proper reaction condition. Physical and chemical properties of dechlorination products and U-SAP wasteforms were characterized by XRD, DSC, SEM, TGA and PCT-A. A U-SAP wasteform showed suitable properties as a radioactive wasteform such as dense surface morphology, high waste loading, and high durability at the optimized U-SAP/salt ratio 2.
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References
J.-H. Choi, H.-C. Eun, H.-S. Park and D.-H. Ahn, JNFCWT, 13, 76 (2015).
H.-C. Eun, J.-H. Choi, T.-K. Lee, I.-H. Cho, N.-Y. Kim, J.-U. Yu, H.-S. Park and D.-H. Ahn, JNFCWT, 13, 181 (2015).
J.-H. Choi, H.-C. Eun, K.-R. Lee, I.-H. Cho, T.-K. Lee, H.-S. Park and D.-H. Ahn, J. Non-Cryst. Solids, 434, 79 (2016).
H.-S. Lee, G.-H. Oh, Y.-S. Lee, I.-T. Kim and J. H. Lee, J. Nucl. Sci. Technol., 46, 392 (2009).
M.T. Harrison, H. E. Simms, A. Jackson and R. G. Lewis, Radiochin. Acta, 96, 295 (2008).
M.A. Lewis, D.F. Fischer and L. J. Smith, J. Am. Ceram. Soc., 76, 2826 (1993).
J.S. Luo, V.N. Zyryanov and W.L. Ebert, Microstructural characterization of halite inclusions in a glass-bonded ceramic waste form, in: D.R. Spearing, G. L. Smith, R. L. Putnam (Eds.), Environmental Issues and Waste Management Technologies in the Ceramic and Nuclear Industries VI, American Ceramic Society, Westerville, OH, U.S.A., 477 (2001).
S.M. Frank, T.L. Barber, T. DiSanto, K.M. Goff, S.B. Johnson, J.-F. Jue, M. Noy, T.P. O’Holleran and W. Sinkler, Mat. Res. Soc. Symp. Proc. Vol. 713, Materials Research Society, Warrendale, PA, U.S.A., 487 (2002).
B. L. Meltcalfe and I.W. Donald, J. Non-Cryst. Mater., 348, 225 (2004).
G. Leturcq, A. Grandjean, D. Rigaud, P. Perouty and M. Charlot, J. Nucl. Mater., 347, 1 (2005).
E. Bekaert, L. Montagne, G. Palavit, L. Delevoye, A. Kunegel and A. Wattiaux, J. Non-Cryst., Solids, 352, 4112 (2006).
H.-S. Park, I.-T. Kim, H.-Y. Kim, S.-K. Ryu and J.-H. Kim, Envrion. Sci. Technol., 41, 1345 (2007).
H.-S. Park, I.-T. Kim, Y.-J. Cho, H.-C. Eun and J.-H. Kim, Environ. Sci. Technol., 41, 7536 (2007).
H.-S. Park, I.-T. Kim, Y.-Z. Cho, H.-C. Eun and H.-S. Lee, Environ. Sci. Technol., 42, 9357 (2008).
H.-S. Park, I.-H. Cho, H.-C. Eun, I.-T. Kim, Y.-Z. Cho and H.-S. Lee, Environ. Sci. Technol., 45, 1932 (2011).
I.-H. Cho, H.-S. Park, S.-N. Ahn, I.-T. Kim and Y.-Z. Cho, J. Kor. Rad. Waste Soc., 10(1), 45 (2012).
S.-N. Ahn, H.-S. Park, I.-H. Cho, I.-T. Kim and Y.-Z. Cho, J. Kor. Rad. Waste Soc., 10(1), 27 (2012).
Standard test methods for determining chemical durability of nuclear, hazardous, and mixed waste glasses and multiphase glass ceramics: The Product Consistency Test (PCT), C 1285-02, ASTM international, West Conshohocken, PA (2008).
B. J. Riley, J.V. Crum, J. Maryas, J. S. McCloy and W. C. Lepry, J. Am. Ceram. Soc., 95(10), 3115 (2012).
B. J. Riley, B.T. Rieck, J. S. McCloy, J.V. Crum, S. K. Sundaram and J.D. Vienna, J. Nucl. Mater., 424, 29 (2012).
E.R. Vance, J. Davis, K. Olufson, I. Chiroi, I. Karatchevtseva and I. Farnan, J. Nucl. Mater., 420, 396 (2012).
R. Pires, I. Abrahms, T. G. Nunes and G. E. Hawkes, J. Non-Cryst. Solids, 337, 1 (2004).
A. Dhara, R. K. Mishra, R. Shukla, T. P. Valsala, V. Sudarsan, A. K. Tyagi and C. P. Kaushik, J. Non-Cryst. Solids, 447, 283 (2016).
J. McCloy, N. Washton, P. Gassmand, J. Marcial, J. Weaver and R. Kukkadapu, J. Non-Cryst. Solids, 409, 149 (2015).
C.M. Jantzen, N.E. Bibler, D.C. Beam, C.L. Crawford and M.A. Pickett, Characterization of the Defense Waste Processing Facility (DWPF) Environmental Assessment (EA) Glass Standard Reference Material (U). WSRC-TR-92-346. Savannah River Site, Aiken, SC (1993).
W. L. Ebert and S. F. Wolf, Round-Robin Testing of a Reference Glass for Low-Activity Waste Forms, ANL-99-22, Argonne National Laboratory, Argonne, Illinois (1999).
W.E. Lee, M. I. Ojovan, M.C. Stennett and N.C. Hyatt, Adv. Appl. Ceram., 105, 1 (2006).
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This article is dedicated to Prof. Seong Ihl Woo on the occasion of his retirement from KAIST.
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Lee, K.R., Park, HS., Cho, IH. et al. De-chlorination and solidification of radioactive LiCl waste salt by using SiO2-Al2O3-P2O5 (SAP) inorganic composite including B2O3 component. Korean J. Chem. Eng. 34, 2390–2396 (2017). https://doi.org/10.1007/s11814-017-0140-z
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DOI: https://doi.org/10.1007/s11814-017-0140-z