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Liquid/Liquid Extraction Kinetics of Eu(III) and Am(III) by Extractants Designed for the Industrial Reprocessing of Nuclear Wastes
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-07-08 , DOI: 10.1021/acs.iecr.0c02401 T. H. Vu 1 , Jean-Pierre Simonin 1 , A. L. Rollet 1 , R. J. M. Egberink 2 , W. Verboom 2 , M. C. Gullo 3 , A. Casnati 3
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-07-08 , DOI: 10.1021/acs.iecr.0c02401 T. H. Vu 1 , Jean-Pierre Simonin 1 , A. L. Rollet 1 , R. J. M. Egberink 2 , W. Verboom 2 , M. C. Gullo 3 , A. Casnati 3
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Results about the kinetics of extraction of Eu(III) and Am(III) by extractants designed for the industrial reprocessing of nuclear wastes are reported. They were obtained using the rotating membrane cell (RMC) technique. Extraction and stripping kinetic rate constants were determined for various compositions of the aqueous and organic phases. The transfer was studied at liquid/liquid interfaces between an aqueous nitric acid solution and an organic solvent containing the diglycolamide extractant molecule N,N,N′,N′-tetra-n-octyl-diglycolamide (TODGA) or a mixture of the bipyridine molecule CyMe4BTBP with TODGA (the latter being used as a phase-transfer catalyst), dissolved in an aliphatic diluent. In some experiments, an aqueous ligand (a sulfonated bis triazinyl pyridine, SO3-Ph-BTP, or a PyTri-diol) was added to the aqueous phase as a stripping agent. The diffusion coefficients of Eu(III) and Am(III), which are key in the analysis of the kinetic data, were measured using the RMC and the closed capillary technique. Whenever possible, mechanisms are proposed to interpret the experimental results.
中文翻译：
用于核废料工业处理的萃取剂对Eu（III）和Am（III）的液/液萃取动力学
报告了有关设计用于核废料工业后处理的萃取剂萃取Eu（III）和Am（III）动力学的结果。它们是使用旋转膜细胞（RMC）技术获得的。确定了水相和有机相的各种组成的萃取和汽提动力学速率常数。在硝酸水溶液和含有二甘醇酰胺萃取剂分子N，N，N '，N'-四-正辛基-二甘醇酰胺（TODGA）或联吡啶混合物的有机溶剂之间的液/液界面处研究转移分子CyMe 4BTBP和TODGA（后者用作相转移催化剂），溶于脂肪族稀释剂中。在一些实验中，将水性配体（磺化的双三嗪基吡啶，SO 3 -Ph-BTP或PyTri-二醇）添加至水相中作为汽提剂。Eu（III）和Am（III）的扩散系数是动力学数据分析的关键，使用RMC和封闭毛细管技术进行了测量。只要有可能，就提出了解释实验结果的机制。
更新日期：2020-07-29
中文翻译：
用于核废料工业处理的萃取剂对Eu（III）和Am（III）的液/液萃取动力学
报告了有关设计用于核废料工业后处理的萃取剂萃取Eu（III）和Am（III）动力学的结果。它们是使用旋转膜细胞（RMC）技术获得的。确定了水相和有机相的各种组成的萃取和汽提动力学速率常数。在硝酸水溶液和含有二甘醇酰胺萃取剂分子N，N，N '，N'-四-正辛基-二甘醇酰胺（TODGA）或联吡啶混合物的有机溶剂之间的液/液界面处研究转移分子CyMe 4BTBP和TODGA（后者用作相转移催化剂），溶于脂肪族稀释剂中。在一些实验中，将水性配体（磺化的双三嗪基吡啶，SO 3 -Ph-BTP或PyTri-二醇）添加至水相中作为汽提剂。Eu（III）和Am（III）的扩散系数是动力学数据分析的关键，使用RMC和封闭毛细管技术进行了测量。只要有可能，就提出了解释实验结果的机制。
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