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<論文>酸化ルテニウム触媒超臨界水による放射性廃棄物処理
https://kindai.repo.nii.ac.jp/records/6456
https://kindai.repo.nii.ac.jp/records/64567693a5fc-5e78-4855-9dc0-b68953fbfee5
名前 / ファイル | ライセンス | アクション |
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AN00063722-20140320-0009.pdf (290.7 kB)
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Item type | ☆紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2014-06-10 | |||||
タイトル | ||||||
タイトル | <論文>酸化ルテニウム触媒超臨界水による放射性廃棄物処理 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | <Contributed Paper> Disposition of nonflammable low-level radioactive wastes using supercritical water with ruthenium(IV)oxide catalyst | |||||
著者 |
杉山, 亘
× 杉山, 亘 |
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言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題 | Low-level radioactive wastes, Recovery of radioactivity as solids, Ru0_2, Supercritical water | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
著者(英) | ||||||
en | ||||||
Sugiyama, Wataru | ||||||
著者 所属 | ||||||
近畿大学原子力研究所 | ||||||
著者所属(翻訳) | ||||||
Atomic Energy Research Institute, Kinki University | ||||||
版 | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 名前 | ||||||
出版者 | 近畿大学原子力研究所 | |||||
書誌情報 |
近畿大学原子力研究所年報 en : Annual Report of Kinki University Atomic Energy Research Institute 巻 50, p. 9-17, 発行日 2014-03-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 03748715 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | [Abstract] This paper presents the distribution behavior of iron, cobalt, cesium, iodine and strontium attached to nonflammable organic materials, in solid, liquid and gas phases during the decomposition of these materials using supercritical water with ruthenium(IV) oxide (Ru0_2) catalyst. The distributions of these elements under various conditions (initial amounts, with/without precipitation reagent) were determined by using their radioisotopes as simulated low-level radioactive wastes (LL W) in order to ease the detection of trace amounts of elements even in solid and gas phases. Iron and cobalt were found only in the solid phase when iron hydroxide was added as a precipitation reagent before the supercritical water reaction. Cesium, iodine andstrontium were found in the liquid phase after the reaction. Therefore, by adding precipitation reagents such as sodium tetraphenylborate, and sodium carbonate (Na_2CO_3) (or sodium hydrogencarbonate (NaHCO_3)) and silver nitrate (AgNO_3) aqueous solutions to each resultant liquid phase containing cesium, strontium and iodine, respectively, these elements can be successfully recovered only in the solid phase. The gases produced during the decomposition of the organic material contain no radioactivity under all conditions in this study. These results indicate that all of the elements investigated in this study (iron, cobalt, cesium, iodine and strontium) can be recovered successfully by this supercritical water process using RuO_2 Consequently, this process is suggested as a predominant candidate for the treatment of nonflammable organic materials in LLW. | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf |