Electroseparation of thorium from ThO2 and La2O3 by forming Th-Al alloys in LiCl-KCl eutectic

Guoan, Ye; Yuan, Liyong; Liu, Kui; Feng, Yingbin; Li, Zi‐Jie; Chai, Zhifang

doi:10.1016/j.electacta.2015.01.128

Cited by 35 publications

(14 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to completely extract the lanthanides from the solvent, to minimize the ultimate concentration of lanthanide metal is requisite by controlling the electrode potential. The separation rate η can be defined by Eq

normalη = 1 - \frac{α_{A^{n +}}^{italicfinal}}{α_{A^{n +}}^{italicinitial}}

α_{A^{n +}}^{final}

and

α_{A^{n +}}^{initial}

are the concentration of the element in melts after and A n+ before the separation, respectively.…”

Section: Resultsmentioning

confidence: 99%

Extraction of neodymium from other fission products by co‐reduction of Sn and Nd

Zhang

Yan

et al. 2019

Applied Organom Chemis

View full text Add to dashboard Cite

High temperature processing is an important method for recovering long‐lived elements from spent nuclear fuel. Electrolysis is the key technology for high temperature processing. The electrochemical behaviors of Sn2+, Nd3+ and the mechanisms of Sn‐Nd alloy formation were investigated on a Mo electrode at 873 K by conducting a series of electrochemical techniques. The results showed the deposition of Nd on inert electrode is a two‐step process in LiCl‐KCl‐SnCl2 (2.0 wt.%) melt system. Subsequently, the electrochemical extraction of Nd from molten chlorides were carried out on the Mo electrode at temperature of 873 K by the potentiostatic electrolysis at −1.2 V for 40 hr. Besides, the extraction efficiency is 97.6%. A series of potentiostatic electrolysis were carried out at potential range between −1.0 and − 1.4 V. The NdSn3 alloy was obtained by electrolysis at −1.2 V. This deposition potential is consistent with the predicted results of the mathematical model. The micro‐chemical analysis and morphology analysis of the deposits was characterized by energy dispersive spectrometry (EDS) with scanning electron microscopy (SEM) equipped. The composition of the deposits was analyzed by X‐ray diffraction (XRD) and inductive coupled plasma atomic emission spectrometer (ICP‐AES).

show abstract

normalη = 1 - \frac{α_{A^{n +}}^{italicfinal}}{α_{A^{n +}}^{italicinitial}}

α_{A^{n +}}^{final}

and

α_{A^{n +}}^{initial}

are the concentration of the element in melts after and A n+ before the separation, respectively.…”

Section: Resultsmentioning

confidence: 99%

Extraction of neodymium from other fission products by co‐reduction of Sn and Nd

Zhang

Yan

et al. 2019

Applied Organom Chemis

View full text Add to dashboard Cite

show abstract

“…[8][9][10][11][12][13] Since molten salt has some excellent characteristics, 14,15 for instance, radiation resistance, short cooling time, and antiproliferative properties, pyrometallurgical technology, employing molten salt as medium, is considered as a promising method in the field of separation and extraction of actinides, 16,17 which mainly includes reduction extraction in molten saltliquid metal system, 18,19 electrorefining, 20,21 and electrochemical extraction using reactive cathodes. [22][23][24][25][26] Wherein, electrochemical extraction is the most extensive pyrochemical separation process. As the electroextraction of U and minor actinides proceeds, lanthanides will continue to accumulate in the solvent.…”

Section: Introductionmentioning

confidence: 99%

“…The recovery of actinide elements by partitioning and transmutation, considered as one of the promising options for spent fuel management, can make full use of nuclear fuel and minimize nuclear wastes, 7 which is conducive to increase the utilization rate of nuclear energy 8‐13 . Since molten salt has some excellent characteristics, 14,15 for instance, radiation resistance, short cooling time, and antiproliferative properties, pyrometallurgical technology, employing molten salt as medium, is considered as a promising method in the field of separation and extraction of actinides, 16,17 which mainly includes reduction extraction in molten salt‐liquid metal system, 18,19 electrorefining, 20,21 and electrochemical extraction using reactive cathodes 22‐26 . Wherein, electrochemical extraction is the most extensive pyrochemical separation process.…”

Section: Introductionmentioning

confidence: 99%

Electrode reaction of Pr on Sn electrode and its electrochemical recovery fromLiCl‐KClmolten salt

et al. 2021

View full text Add to dashboard Cite

To recover Pr from molten chlorides, the electrode reactions of Pr 3+ on Sn-coated W and liquid Sn electrodes were studied by a group of electrochemical techniques. CV and SWV results exhibited that the electrochemical signals pertaining to the formation of Pr-Sn alloy compounds and solid solution appeared at less negative potentials than that of Pr 3+ on W electrode. The thermodynamic data of Pr-Sn alloy compounds and the kinetic parameters for PrSn 3 /Pr 3+ pair were determined employing OCP, LP, and Tafel methods, separately. The measured diffusion coefficient (D) of Pr in liquid Sn metal was 9.40 × 10 −6 cm 2 s −1 . Furthermore, the electrochemical recovering Pr from molten salt was performed using liquid Sn as a working electrode, and the formed Pr-Sn samples characterized by XRD and SEM-EDS were composed of Sn and PrSn 3 phases.

show abstract

“…for Ti , and many others, including metals from the f-block 32 . The use of molten chlorides in electrochemistry requires atmosphere control (neutral gases) and additional control measures due to possible salt evaporation 33 and chlorine formation.…”

Section: Additional Stream Of Rare and Valuable Metals Is Possible Inmentioning

confidence: 99%

Metal Recovery by Electrodeposition from a Molten Salt Two-Phase Cell System

Amietszajew

Sridhar

Bhagat

2016

J. Electrochem. Soc.

View full text Add to dashboard Cite

A novel electrochemical recovery method of Co, Cu, Mn and Ni from a reactor based on two immiscible molten phases, to enable selective metal plating, sufficient feedstock dissolution and protection from re-oxidation, was designed and characterised through voltammetry and chronoamperometry. The immiscible phases in the electrolytic cell were NaCl and Na2O-2B2O3 at 1173 K, and the metal feedstock to be recovered was either metal chlorides or metal oxides of Co, Cu, Mn and Ni. Metals could be successfully recovered as plated metal deposits and the formal redox reaction potentials were reported. Metals thermodynamic behaviour differences between the cells were analysed. Analysis of the metal deposits showed that the recovered metals were of high purity (∼99%). This offers an alternative method to recycle valuable metals present in the growing e-waste stream.

show abstract

Electroseparation of thorium from ThO2 and La2O3 by forming Th-Al alloys in LiCl-KCl eutectic

Cited by 35 publications

References 21 publications

Extraction of neodymium from other fission products by co‐reduction of Sn and Nd

Extraction of neodymium from other fission products by co‐reduction of Sn and Nd

Electrode reaction of Pr on Sn electrode and its electrochemical recovery fromLiCl‐KClmolten salt

Metal Recovery by Electrodeposition from a Molten Salt Two-Phase Cell System

Contact Info

Product

Resources

About