| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2013: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2012: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Outline of Final Research Achievements |
Zeolite adsorbents are used for removal of radioactive ions from water because of their high radiation resistance and selective ion-exchange property. However, radiation chemistry in solid/liquid systems is not adequately understood in order to estimate radiation effects in the water treatments by zeolite adsorbents. Hence, reactions and products induced by irradiation of the mixtures of zeolites and water were studied. This study revealed that irradiation of zeolites in water produces hydrogen additional to the hydrogen production by direct radiolysis of water. Moreover, the results of this study showed that accumulation of hydrogen peroxide is inhibited due to decomposition of adsorbed hydrogen peroxide on the zeolites by energy deposition on the zeolites. These effects of zeolites were quantitatively formulated and a reaction model for zeolite/water mixture was proposed by incorporating the zeolite effects into the reaction model of water radiolysis.
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