Hostname: page-component-8448b6f56d-42gr6 Total loading time: 0 Render date: 2024-04-19T03:14:01.728Z Has data issue: false hasContentIssue false
  • English
  • Français

Study of BiPbO2NO3 for I-129 Fixation under Reducing Conditions

Published online by Cambridge University Press:  21 March 2011

Takayuki Amaya ,
Atsushi Mukunoki ,
Mamoru Shibuya  and
Hiroshi Kodama
Takayuki Amaya
Affiliation:
JGC Corporation, 2205, Naritacho, Oaraimachi, 311-1313, Japan
Atsushi Mukunoki
Affiliation:
JGC Corporation, 2205, Naritacho, Oaraimachi, 311-1313, Japan
Mamoru Shibuya
Affiliation:
JGC Corporation, 2205, Naritacho, Oaraimachi, 311-1313, Japan
Hiroshi Kodama
Affiliation:
National Institute for Research in Inorganic Materials, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
Get access

Abstract

Leaching of the iodide ion from BiPbO2I (BPI), BPI encapsulated in cement (BPIC) and AgI was studied in a low salinity solution and in a high salinity solution under reducing conditions. Although BPI released a limited amount of iodide ions (less than 1%) into the low salinity solution, it released more than 30% of iodide ions into the high salinity solution within 80 days. AgI released more than 30% of iodide ions into both low and high salinity solutions within 80 days. It was proved that BPI is more stable than AgI in the low salinity solution under reducing conditions. BPIC released a limited number of iodide ions (less than 5%) into both low and high salinity solutions. BPIC showed the best leach resistance in the high salinity solution.

BiPbO2NO3 (BPN) was developed to remove iodide ions in a solution and fix them in BPI by the ion exchange reaction. Ion exchange properties under reducing conditions were studied. An anion exchange capacity of 1.0 mEq/g and a distribution coefficient of larger than 0.1 m3/kg were obtained in a solution at a pH of between 9 and 13. The advantages of the process using BPN for removing and immobilizing Iodine-129 were discussed from the standpoint of process simplification.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 663: Symposium – Scientific Basis for Nuclear Waste management XXIV , 2000 , 43
Copyright
Copyright © Materials Research Society 2001

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.IAEA Technical Report Series 276Google Scholar
2.NUREG/CR-2493Google Scholar
3. Bird, G. W. and Lopata, V. J., in Scientific. Basis for nuclear waste management, Vol. 2, pp419–426,1980 Google Scholar
4. Fujihara, H. and Saito, N., Journal of Nuclear Fuel Cycle and Environment, Nol.6, No.1, pp51–54, December 1999 Google Scholar
5. Burger, L. L., Scheele, R. D. and Wiemers, K. D., PNL-4045, December 1981 Google Scholar
6. Scheele, R. D. and Burger, L. L., ACS Symp. Ser (Am. Chem. Soc.) No.246, pp373–387, 1984 Google Scholar
7. Brown, D. R. and Grutzeck, M. W., in Scientific. Basis for nuclear waste management (Mat. Res. Soc. Sym. Proc. Vol.44, 1985)Google Scholar
8. Vance, E. R., et al., DOE/ET/41900-9, July 1981 Google Scholar
9. Couture, R. A., et al., Nucl. and Chem. Waste Management, Vol.4, pp301–316, 1983 Google Scholar
10. Haq, Z., et al., Envir. Sci. and Tech., Vol.14, Num.9, pp1106–1110, September, 1980 Google Scholar
11. Anderson, H. L., et al., SAND95–1634, July 1995 Google Scholar
12. Taylor, P., AECL-10163, July 1990 Google Scholar
13. Kodama, H.; in Proc. of the Ion Ex.95 Conf., Wrexham UK (Eds. Dyer, A., Hudson, M. J. and Williams, P. A.)1997, p39 Google Scholar
14. Kodama, H.; in Proc. Of the Ion ICIE.95 Conf., Takamatsu Japan 1995, P285 Google Scholar
15. Kodama, H.; Czechoslovak J. of Physics, Vol. 49 (1999), Suppl. S1, P971 Google Scholar
16.JNC TN1400 99-020Google Scholar