This paper describes low temperature vitrification process with BiPbO2I (BPI) as a promising immobilization technique in which Iodine-129 reacts with BiPbO2NO3 (BPN) to form BPI, which is then solidified into a lead-boron-zinc glass matrix (PbO-B2O3-ZnO) using a low temperature vitrification process. Studies with EPMA, STEM-EDS and XRD found that iodine, lead and zinc were homogeneously dispersed in the waste form, and that there were no residual crystalline minerals in the amorphous glass matrix. Leaching tests conducted under typical geological disposal conditions show that iodine dissolves congruently with the BPI glass matrix in simulated seawater, whereas it dissolves incongruently in alkaline Ca(OH)2 solutions. This is due to retention within an altered surface layer.
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The 11th International Conference on Environmental Remediation and Radioactive Waste Management
September 2–6, 2007
Bruges, Belgium
Conference Sponsors:
- Nuclear Division and Environmental Engineering Division
ISBN:
978-0-7918-4339-0
PROCEEDINGS PAPER
Development of an Iodine Immobilization Technique by Low Temperature Vitrification With BiPbO2I Available to Purchase
Atsushi Mukunoki,
Atsushi Mukunoki
JGC Corporation, Yokohama, Japan
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Tamotsu Chiba,
Tamotsu Chiba
JGC Corporation, Yokohama, Japan
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Yasuhiro Suzuki,
Yasuhiro Suzuki
JGC Corporation, Yokohama, Japan
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Seiichiro Uehara,
Seiichiro Uehara
Kyushu University, Fukuoka, Japan
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Tsutomu Nishimura
Tsutomu Nishimura
RWMC, Japan
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Atsushi Mukunoki
JGC Corporation, Yokohama, Japan
Tamotsu Chiba
JGC Corporation, Yokohama, Japan
Yasuhiro Suzuki
JGC Corporation, Yokohama, Japan
Seiichiro Uehara
Kyushu University, Fukuoka, Japan
Hidekazu Asano
RWMC, Japan
Tsutomu Nishimura
RWMC, Japan
Paper No:
ICEM2007-7142, pp. 459-464; 6 pages
Published Online:
May 29, 2009
Citation
Mukunoki, A, Chiba, T, Suzuki, Y, Uehara, S, Asano, H, & Nishimura, T. "Development of an Iodine Immobilization Technique by Low Temperature Vitrification With BiPbO2I." Proceedings of the The 11th International Conference on Environmental Remediation and Radioactive Waste Management. 11th International Conference on Environmental Remediation and Radioactive Waste Management, Parts A and B. Bruges, Belgium. September 2–6, 2007. pp. 459-464. ASME. https://doi.org/10.1115/ICEM2007-7142
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