Electrochemical Removal of Rare Earth Element in LiCl-KCl Molten Salt
This study was carried out to examine the removal of rare earth (RE) elements by electrodeposition for the purification and reuse of LiCl-KCl salt after electrorefining and electrowinning. The electrochemical behavior of RE elements (Dy and Gd) in LiCl-KCl-DyCl3-GdCl3 at 500°C was investigated using...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2020/2392489 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849685123561160704 |
|---|---|
| author | Gha-Young Kim Junhyuk Jang Seungwoo Paek Sung-Jai Lee |
| author_facet | Gha-Young Kim Junhyuk Jang Seungwoo Paek Sung-Jai Lee |
| author_sort | Gha-Young Kim |
| collection | DOAJ |
| description | This study was carried out to examine the removal of rare earth (RE) elements by electrodeposition for the purification and reuse of LiCl-KCl salt after electrorefining and electrowinning. The electrochemical behavior of RE elements (Dy and Gd) in LiCl-KCl-DyCl3-GdCl3 at 500°C was investigated using the cyclic voltammetry (CV) technique using Mo and Mg electrodes. It was observed that the reduction potential of the RE elements shifted at the Mg electrode owing to the alloy formation with Mg (RE-Mg alloy). Subsequently, a series of potentiostatic electrolysis tests were conducted to remove the RE elements in the salt and check the formation of deposits at the Mg and Mo electrodes. The scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM/EDS) technique was used to confirm that the reduced RE metals were deposited on the surface of the Mg electrode. However, no significant deposit on the Mo electrode was observed, and a mud-like deposit was found on the bottom of the electrochemical cell. The salt analysis performed by employing the inductively coupled plasma-optical emission spectrometry (ICP-OES) indicated that the removal efficiency of Dy3+ and Gd3+ through electrodeposition was 83.5∼95.2 and 91.6∼95.2%, respectively. |
| format | Article |
| id | doaj-art-c2ca2e82a80a40e9a9a68b3ec0dbbbff |
| institution | DOAJ |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-c2ca2e82a80a40e9a9a68b3ec0dbbbff2025-08-20T03:23:15ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832020-01-01202010.1155/2020/23924892392489Electrochemical Removal of Rare Earth Element in LiCl-KCl Molten SaltGha-Young Kim0Junhyuk Jang1Seungwoo Paek2Sung-Jai Lee3Nuclear Fuel Cycle Process Research Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of KoreaNuclear Fuel Cycle Process Research Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of KoreaNuclear Fuel Cycle Process Research Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of KoreaNuclear Fuel Cycle Process Research Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of KoreaThis study was carried out to examine the removal of rare earth (RE) elements by electrodeposition for the purification and reuse of LiCl-KCl salt after electrorefining and electrowinning. The electrochemical behavior of RE elements (Dy and Gd) in LiCl-KCl-DyCl3-GdCl3 at 500°C was investigated using the cyclic voltammetry (CV) technique using Mo and Mg electrodes. It was observed that the reduction potential of the RE elements shifted at the Mg electrode owing to the alloy formation with Mg (RE-Mg alloy). Subsequently, a series of potentiostatic electrolysis tests were conducted to remove the RE elements in the salt and check the formation of deposits at the Mg and Mo electrodes. The scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM/EDS) technique was used to confirm that the reduced RE metals were deposited on the surface of the Mg electrode. However, no significant deposit on the Mo electrode was observed, and a mud-like deposit was found on the bottom of the electrochemical cell. The salt analysis performed by employing the inductively coupled plasma-optical emission spectrometry (ICP-OES) indicated that the removal efficiency of Dy3+ and Gd3+ through electrodeposition was 83.5∼95.2 and 91.6∼95.2%, respectively.http://dx.doi.org/10.1155/2020/2392489 |
| spellingShingle | Gha-Young Kim Junhyuk Jang Seungwoo Paek Sung-Jai Lee Electrochemical Removal of Rare Earth Element in LiCl-KCl Molten Salt Science and Technology of Nuclear Installations |
| title | Electrochemical Removal of Rare Earth Element in LiCl-KCl Molten Salt |
| title_full | Electrochemical Removal of Rare Earth Element in LiCl-KCl Molten Salt |
| title_fullStr | Electrochemical Removal of Rare Earth Element in LiCl-KCl Molten Salt |
| title_full_unstemmed | Electrochemical Removal of Rare Earth Element in LiCl-KCl Molten Salt |
| title_short | Electrochemical Removal of Rare Earth Element in LiCl-KCl Molten Salt |
| title_sort | electrochemical removal of rare earth element in licl kcl molten salt |
| url | http://dx.doi.org/10.1155/2020/2392489 |
| work_keys_str_mv | AT ghayoungkim electrochemicalremovalofrareearthelementinliclkclmoltensalt AT junhyukjang electrochemicalremovalofrareearthelementinliclkclmoltensalt AT seungwoopaek electrochemicalremovalofrareearthelementinliclkclmoltensalt AT sungjailee electrochemicalremovalofrareearthelementinliclkclmoltensalt |