WEKO3
アイテム
Investigation on Characteristic of Tritium Oxidation by Natural Soils
https://repo.qst.go.jp/records/73168
https://repo.qst.go.jp/records/7316872950a70-5348-4043-8b46-09c53ab7d4e5
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-01-28 | |||||
| タイトル | ||||||
| タイトル | Investigation on Characteristic of Tritium Oxidation by Natural Soils | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
枝尾, 祐希
× 枝尾, 祐希× 岩井, 保則× 枝尾 祐希× 岩井 保則 |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | A passive catalytic reactor without heating is required to enhancing safety of the fusion facility. A precious metal catalyst without heating is not suitable to oxidize with low concentration and at room temperature. In addition, under a moisture condition, the performance of tritium oxidation of a precious metal catalyst is dropped drastically by moisture since moisture adsorbs active sites on the surface of catalyst. Hence, as a method of tritium oxidation under moisture condition at room temperature, we have focused on bacterial oxidation of tritium by hydrogen-oxidizing bacteria in natural soil to realize a passive reactor. In the present study, we investigated effect of hydrogen concentration on tritium oxidation by hydrogen-oxidizing bacteria in natural soils to understand the characteristic of tritium oxidation by hydrogen-oxidizing bacteria in the view point of engineering. In our experiment, an efficiency of tritium oxidation by a natural soil was obtained at room temperature in the range of hydrogen concentration from 0.5 ppm to 10000 ppm under a moisture condition. The efficiency of tritium oxidation was the highest in the hydrogen concentration of 0.5 ppm which equal the value of hydrogen concentration in air. Our results indicated Our results shows hydrogen oxidizing bacteria could oxidize tritium efficiently under low concentration of hydrogen, room temperature and high moisture. This showed an opposite tendency to a metal catalyst. A bioreactor using hydrogen-oxidizing bacteria complemented a conventional catalytic reactor using a precious metal catalyst since hydrogen oxidizing bacteria could be oxidize tritium efficiently under low concentration of hydrogen, room temperature and high moisture. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 23rd Topical Meeting on the Technology of Fusion Energy | |||||
| 発表年月日 | ||||||
| 日付 | 2018-11-13 | |||||
| 日付タイプ | Issued | |||||
