Separation Factor of Americium from Cerium in Molten Chloride-Liquid Gallium Reductive Extraction System

The results of thermodynamic calculations of uranium and lanthanides (praseodymium and neodymium) and experimental data on separation of uranium and neodymium in "LiCl-KCl-CsClbased melt -Ga-In eutectic based alloy" are compared. Additionally the results of calculations of separation of Pr/U and Nd/U couples using liquid gallium, indium and their eutectic alloy at 723, 773 and 823 K are presented.

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“…[2][3][4]. There are no data concerning praseodymium and neodymium electrode potentials in LiCl-KCl-CsCl eutectic.…”

Section: Calculation Of Pr/u and Nd/u Separation Factors From Thermodmentioning

confidence: 79%

Separation of Uranium and Lanthanides in a Fused Salt – Liquid Gallium Based Alloy System

et al. 2014

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“…Experimentally determined Nd/U separation factors in 'Ga-X-Nd -LiCl-KCl-CsCl-UCl 3 ' systems are summarized in Table 3. Ce/Am separation factor reported for liquid gallium and LiCl-KCl eutectic based melt [6] is also included for comparison. The presented data show that under static conditions, i.e.…”

Section: Resultsmentioning

confidence: 99%

“…Relatively high melting point of Al (660.37°C) limits its application in pyrochemical technologies in chloride media [5]. Gallium was considered as a prospective liquid metal medium [6,7] but the high price of this trace element will likely limit its wide industrial scale application. Binary alloys of gallium with other elements, e.g.…”

Section: Introductionmentioning

confidence: 99%

Uranium and neodymium partitioning in alkali chloride melts using low-melting gallium-based alloys

et al. 2015

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Abstract. Partitioning of uranium and neodymium was studied in a 'molten chloride salt -liquid Ga-X (X = In or Sn) alloy' system. Chloride melts were based on the low-melting ternary LiCl-KCl-CsCl eutectic. Nd/U separation factors were calculated from the thermodynamic data as well as determined experimentally. Separation of uranium and neodymium was studied using reductive extraction with neodymium acting as a reducing agent. Effi cient partitioning of lanthanides (Nd) and actinides (U), simulating fi ssion products and fi ssile materials in irradiated nuclear fuels, was achieved in a single stage process. The experimentally observed Nd/U separation factor valued up to 10 6 , depending on the conditions.

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“…3-+ Nd 0 (alloy) ↔ NdCl 6 3-+ U 0 (alloy) [6] Thermodynamically possible separation factors were calculated using equation [5]. Methods for determining activity coefficients of metals in liquid alloys and formal standard electrode potentials in fused salts have been described previously (8)(9)(10).…”

Section: Methodsmentioning

confidence: 99%

“…Relatively high melting point of Al (933.52 K) and low compatibility with the metallic construction materials limits application of individual aluminum in pyrochemical technologies utilizing chloride media. Gallium is next in the row and is considered as a prospective liquid metal electrode material (5,6). Gallium, however, is a trace element, and therefore is rather expensive for the industrial application.…”

Section: Introductionmentioning

confidence: 99%

Separation of Lanthanides and Actinides in a Chloride Melt - Liquid Metal System: The Effect of Phase Composition

et al. 2016

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Separation of lanthanides and actinides can be achieved in a “molten chloride – liquid metal” system. Here, the effect of temperature, cationic composition of the alkali chloride based melts, and composition of the liquid metal on the separation factor are considered, and separation of neodymium and uranium is studied as an example. Gallium, indium, aluminum, tin and their mixtures of various compositions were chosen as low melting metals. Possible separation coefficients were calculated on the basis of thermodynamic and electrochemical properties of uranium and neodymium. To confirm the results of calculations, experiments on separating Nd and U were conducted. The experiments were performed under various conditions and the experimentally achieved separation factors compared with the theoretical expectations.

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Separation Factor of Americium from Cerium in Molten Chloride-Liquid Gallium Reductive Extraction System

Cited by 7 publications

References 8 publications

Separation of Uranium and Lanthanides in a Fused Salt – Liquid Gallium Based Alloy System

Separation of Uranium and Lanthanides in a Fused Salt – Liquid Gallium Based Alloy System

Uranium and neodymium partitioning in alkali chloride melts using low-melting gallium-based alloys

Separation of Lanthanides and Actinides in a Chloride Melt - Liquid Metal System: The Effect of Phase Composition

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