| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Outline of Final Research Achievements |
Mesoporous silica (SBA-15) were modified by -COOH, -SO3H and -NH2 groups and their tritium adsorption ability from tritiated water under solid-liquid sorption at 5 centigrade was investigated. The separation factor of SBA-COOH, SBA-SO3H, SBA-NH2 and bare-SBA were found to be 1.17, 1.17, 1.18 and 1.21, respectively. On the other hand, by the desorption from these adsorbents up to 250 centigrade using 176.5 kBq/mL of tritiated water, the concentration of resultant tritiated water was 84.0, 202.8, 213.8 and 182.6 kBq/mL, respectively. The SBA-SO3H, SBA-NH2 and bare-SBA showed higher tritium concentration than initial one. Also, tritium concentration from SBA-SO3H and SBA-NH2 showed larger value than that from bare-SBA. These SBA-SO3H and SBA-NH2 are found to be effective for enrichment of tritiated water.
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