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Wet chemical processing for nuclear waste glass to retrieve radionuclides
https://repo.qst.go.jp/records/49490
https://repo.qst.go.jp/records/49490033ba5a3-f67f-437b-97e2-583042607465
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-01-22 | |||||
| タイトル | ||||||
| タイトル | Wet chemical processing for nuclear waste glass to retrieve radionuclides | |||||
| 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_6501 | |||||
| 資源タイプ | journal article | |||||
| 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 |
Takao, Koichiro
× Takao, Koichiro× Mori, Takahiro× Kubo, Mayuu× Uehara, Akihiro× Ikeda, Yasuhisa× Uehara, Akihiro |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Here, we show unexpected and significant elution behavior of various elements from simulated nuclear waste glass (NWG) in ∼10° mol dm−3 acidic solutions below 100 °C, where a borosilicate-based glass matrix has been believed to be chemically durable. Most elements like glass main components (Li, B, Na, Ca, Al, and Zn, but except for Si) and simulated radionuclides (Rb, Cs, Sr, Ba, Se, Te, Mn, Pd, Mo, rare earths, Cr, Fe, and Ni) were remarkably eluted from the simulated NWG in ∼10° M HNO3 aq with Cl− at 90 °C. Especially, the elution of Pd is governed by its coordination chemistry including a redox reaction, because Pd(0) present in the simulated NWG has to be oxidized to Pd2+ which forms [PdCl4]2− for its dissolution. While Zr in simulated NWG is sparingly eluted even in this treatment, its elution actually proceeds in 1–3 M H2SO4 aq at 90 °C thanks to strong coordination of Zr(IV) with SO42−. Through design and optimization of the leaching conditions, a protocol of the wet chemical process to retrieve the radionuclides from simulated NWG has been proposed and demonstrated. | |||||
| 書誌情報 |
Journal of Hazardous Materials 巻 362, p. 368-374, 発行日 2019-01 |
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| 出版者 | ||||||
| 出版者 | ELSEVIER | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0304-3894 | |||||
| PubMed番号 | ||||||
| 識別子タイプ | PMID | |||||
| 関連識別子 | 30245404 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.jhazmat.2018.09.042 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.sciencedirect.com/science/article/pii/S0304389418308379 | |||||
