Separation of Zr from Zr-2.5Nb by Electrorefining in LiCl-KCl for Volumetric Decontamination of CANDU Pressure Tube
نویسندگان
چکیده
This study presents an experimental investigation on Zr separation from Zr-2.5Nb by anode potentiostatic electrorefining in LiCl-KCl-ZrCl4 0.5 wt. % at 773 K for irradiated CANDU pressure tube decontamination. By the ORIGEN-2 code calculation, radioactive characteristics were investigated to show that Nb-94 was most significant radionuclide with aspect of waste level reduction electrorefining. Three tests performed fixing applied potential as ?0.9 V (vs. Ag/AgCl 1 %) dissolve only Zr. A cathode basket installed collect detached deposits cathode. Electrorefining results showed deposited a small amount Nb and other alloying elements. The chemical form shown be metal or mixture ZrCl, depending conditions related surface area ratio anode. It determined attributed two-step reaction Zr4+/ZrCl ZrCl/Zr.
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ژورنال
عنوان ژورنال: Applied sciences
سال: 2021
ISSN: ['2076-3417']
DOI: https://doi.org/10.3390/app11093790