Hydrogen production in gamma radiolysis of the mixture of mordenite and seawater

作者：Kumagai Yuta^*; Kimura Atsushi; Taguchi Mitsumasa; Nagaishi Ryuji; Yamagishi Isao; Kimura Takaumi

来源：Journal of Nuclear Science and Technology, 2013, 50(2): 130-138.

DOI：10.1080/00223131.2013.757453

• hydrogen production
• radioactive waste
• radiation chemistry
• seawater
• zeolite
• gamma ray
• temperature dependence

Hydrogen production by gamma-radiolysis of the mixture of mordenite, a zeolite mineral, and seawater was studied in order to provide basic points of view for the influences of zeolite minerals, of the salts in seawater, and of rise in temperature on the hydrogen production by the radiolysis of water. These influences are required to be considered in the evaluation of the hydrogen production from residual water in the waste zeolite adsorbents generated in Fukushima Dai-ichi Nuclear Power Station. As the influence of the mordenite, an additional production of hydrogen besides the hydrogen production by the radiolysis of water was observed. The additional hydrogen can be interpreted as the hydrogen production induced by the absorbed energy of the mordenite at the yield of 2.3x10(-8) mol/J. The influence of the salts was observed as increase of the hydrogen production. The influence of the salts can be attributed to the reactions of bromide and chloride ions inhibiting the reaction of hydrogen with hydroxyl radical. The influence of the rise in temperature was not significantly observed up to 60 degrees C in the mixture with seawater. The results show that the additional production of hydrogen due to the mordenite had little temperature dependence.

• 出版日期2013-2