Solvent extraction of tin in nitric acids: evaluation of multiple extractants

被引：0
作者：
Ito, K. T. M. [1 ,2 ]
Takahashi, S. [1 ]
Kato, C. [3 ]
Fukutani, S. [4 ]
Matsumura, T. [5 ]
Fujii, T. [1 ]
机构：
[1] Osaka Univ, Grad Sch Engn, Div Sustainable Energy & Environm Engn, Suita, Osaka 5650871, Japan
[2] Univ Tokyo, Geochem Res Ctr, Hongo 7-3-1,Bunkyo Ku, Tokyo 1130033, Japan
[3] Swedish Museum Nat Hist, Dept Geosci, Frescativagen 40, S-11418 Stockholm, Sweden
[4] Kyoto Univ, Inst Integrated Radiat & Nucl Sci, 2-1010 Asashiro Nishi, Sennan, Osaka 5900494, Japan
[5] Japan Atom Energy Agcy, Nucl Sci Res Inst, Shirakata 2-4, Tokai, Ibaraki 3191195, Japan
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2025年 / 334卷 / 03期
关键词：
High-level liquid waste; Sn-126; Tin; Solvent extraction; HNO3; HAA; SEPARATION; TRANSMUTATION; ELEMENTS; SN-126; SN; CU; ACTINIDES; RECOVERY; INDIUM; OXIDE;
D O I：
10.1007/s10967-025-10003-7
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this study, the solvent extraction behavior of tin (Sn), specifically Sn-126, from high-level radioactive waste was evaluated using six different extractants in a HNO3 system. Among the tested extractants, N,N-Didodecyl-2-hydroxyacetoamide (HAA) exhibited higher efficiency, still not sufficient for industrial implementation. In systems where HCl was added to HNO3, both tributyl phosphate (TBP) and N,N,N,N'-tetra-2-ethylhexyl diglycolamide (TEHDGA) achieved D-Sn values greater than 1 at > 1 M HCl. However, due to practical challenges in industrial applications, HAA extraction in HNO3 systems, particularly at low Sn concentrations (0.0008 M), may provide a more effective solution for Sn recovery.
引用
收藏
页码：2467 / 2475
页数：9
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