Development of New Solvent Extraction System for Nuclear Fuel Reprocessing

核燃料后处理新型溶剂萃取系统的开发

• 批准号: 62470150
• 负责人: INOUE Yasushi
• 金额: $ 3.9万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62470150/
• 关键词: Nuclear Fuel Reprocessing; High-level waste; Actinoids; Diisodecyl phosphoric acid; Neptunium; Americium; Acylpyrazolone; Solvent Extraction; 協同効果; ベンゾイルピラゾロン; ベンジルオキシカルボニルピラゾロン; テトラデカノイルピラゾロン; テレフタロイルピラゾロン

This research has been conducted to develop an efficient extraction system for transuranium elements. Since tetra- and hexavalent actinoids are readily extractable from nitric acid solutions by a number of extractants, the studies on reprocessing or waste processing have focused on the development of an efficient extraction system for trivalent actinoids and pentavalent neptunium. Critical survey of literatures conducted in this research showed that acidic or neutral (bidentate) organophosphorus compounds are so far better extractants for trivalent actinoids. Following this evaluation, diisodecyl phosphoric acid, which is one of the acidic organophosphorus compounds, were successfully applied to extract neptunium from high-level radioactive waste solutions. On the other hand, the possibility of using chelating agents in waste processing was examined with using several newly synthesized acylpyrazolone derivatives. Although these derivatives showed better extraction of Am(III) and Np(V) than other chelating extractants, they were not effective enough to extract actinoids from highly acidic waste solutions.

这项研究的目的是开发一种有效的超铀元素提取系统。由于四价和六价锕系元素很容易通过多种萃取剂从硝酸溶液中萃取，因此后处理或废物处理的研究集中在开发三价锕系元素和五价镎的有效萃取系统。本研究中进行的文献审查表明，酸性或中性（二齿）有机磷化合物是迄今为止更好的三价锕系元素萃取剂。经过评估，酸性有机磷化合物之一的二异癸基磷酸被成功应用于从高放射性废液中提取镎。另一方面，使用几种新合成的酰基吡唑啉酮衍生物检验了在废物处理中使用螯合剂的可能性。尽管这些衍生物比其他螯合萃取剂能更好地萃取 Am(III) 和 Np(V)，但它们不足以有效地从高酸性废液中萃取锕系元素。

项目成果

Y.Morita・M.Kubota・M.Ioneya・O.Tochiyama・Y.Inoue: "Influence of Monoisodecyl Phosphoric Acid on Extraction of Neptunium with Diisodecyl Phosphoric Aicd" J.Nucl.Sci.Technol.26. 698-704 (1989)

Y.Morita・M.Kubota・M.Ioneya・O.Tochiyama・Y.Inoue：“单异癸基磷酸对二异癸基磷酸萃取镎的影响”J.Nucl.Sci.Technol.26（1989） ）

O. Tochiyama, Y. Inoue and Y. Kuroki: "The Extraction of Neptunium(V) by Methyltrioctylammonium Chloride and 1-Phenyl-3-methyl-4-benzoyl-5-pyrazolone" Solv. Extr. Ion Exch. 7, 289 (1989).

O. Tochiyama、Y. Inoue 和 Y. Kuroki：“用甲基三辛基氯化铵和 1-苯基-3-甲基-4-苯甲酰基-5-吡唑啉酮萃取镎 (V)”

久保田益充他: "高レベル廃液からの超ウラン元素の抽出分離に関する基礎研究-抽出剤の調査と分類-" JAERI-M. 88-002. (1988)

Masumitsu Kubota 等人：“从高放废液中提取和分离超铀元素的基础研究 - 提取剂的研究和分类 -”JAERI-M 88-002。

森田泰治他: "Influence of Monoisodecyl Phosphoric Acid on Extraction of Neptunium with Diisodecyl Phosphoric Acid." J.Nucl.Sci.Tech.26. 698-704 (1989)

Yasuji Morita 等人：“单异癸基磷酸对用二异癸基磷酸萃取镎的影响。”J.Nucl.Sci.Tech.26 (1989)。

栃山修: Solvent Ectr Ion Exch.7. (1989)

Osamu Tochiyama：溶剂 Ectr 离子交换.7 (1989)