Phase evolution and chemical stability of Nd‐doped Y 3 Fe 5 O 12 waste forms synthesized in molten salt at a low temperature

2021 ◽  
Author(s):  
Shengtai Zhang ◽  
Baoliang Xu ◽  
Jingkai Cheng ◽  
Shilin Luo ◽  
Yi Ding ◽  
...  
Keyword(s):  
Low Temperature ◽  
Molten Salt ◽  
Chemical Stability ◽  
Phase Evolution ◽  
Waste Forms

scholarly journals Immobilized nuclide and leaching mechanism of zircon waste forms efficient synthesized by molten salt

2021 ◽  
Author(s):  
Jian Liu ◽  
Shengtai Zhang ◽  
Lingkun Wang ◽  
Baoliang Xu ◽  
Xueli Zuo ◽  
...  
Keyword(s):  
Low Temperature ◽  
Molten Salt ◽  
Chemical Stability ◽  
Waste Form ◽  
Molar Ratio ◽  
Molten Salt Method ◽  
Sintered Ceramic ◽  
Zircon Structure ◽  
High Level ◽  
Release Form

Abstract Molten salt has rapid mass transfer and nucleation process, so it can synthesize ceramic solid solution of immobilized high-level radioactive waste at low temperature. The chemical stability in the process of interaction with groundwater determines the ability of matrix phase to prevent radionuclides from entering the biosphere and the release form of radionuclides. Nd-doped ZrSiO4 ceramics with different sintering temperature (1100-1500 ℃), sintering time (3-24 h) and molar ratio of salt to oxide (3:1, 7:1 and 10:1) were prepared by molten salt method. The sintered ceramic is Zr1−xNdxSiO4−x/2, where x is the solubility of Nd in ZrSiO4. The results show that the optimum molar ratio of molten salt to oxide is 10:1, which can quickly synthesize zircon waste form at low temperature. The chemical stability test shows that the normalized leaching rate of trivalent nuclides in zircon structure is in the order of ~10−5 g·m−1·d−1, and the surface layer is dissolved. The experimental results show that zircon structure is an excellent waste form.

Screening of Candidate Low‐Temperature Glass Waste Forms for Technetium from Hanford Effluent Management Facility Evaporator Bottoms

2018 ◽  
Author(s):  
Rebecca M. Chamberlin ◽  
Ming Tang ◽  
Rosendo Borjas Nevarez ◽  
Gordon Dennis Jarvinen ◽  
Daniel Koury ◽  
...  
Keyword(s):  
Low Temperature ◽  
Glass Waste ◽  
Waste Forms

Low-temperature fabrication of glass-based iodine waste forms via a novel preparation method

2021 ◽  
pp. 122186
Author(s):  
Biao Wu ◽  
Meng Yan ◽  
Fen Luo ◽  
Xiaoyan Shu ◽  
Yi Liu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Preparation Method ◽  
Waste Forms

Molten Salt Assisted Low-Temperature Electro-Catalytic Graphitization of Coal Chars

2021 ◽  
Author(s):  
Bishnu Prasad Prasad Thapaliya ◽  
Huimin Luo ◽  
Mengya Li ◽  
Wan-Yu Tsai ◽  
Harry M Meyer Iii ◽  
...  
Keyword(s):  
Low Temperature ◽  
Molten Salt ◽  
Catalytic Graphitization

scholarly journals Surface behavior of low-temperature molten salt mixtures during the transition from liquid to solid

2019 ◽  
Vol 275 ◽  
pp. 290-296 ◽  
Author(s):  
Radha G. Bhuin ◽  
Patrick Schreiber ◽  
Bettina S.J. Heller ◽  
Marlene Scheuermeyer ◽  
Peter Wasserscheid ◽  
...  
Keyword(s):  
Low Temperature ◽  
Molten Salt ◽  
Surface Behavior ◽  
Salt Mixtures

scholarly journals Low Temperature Electrodeposition of Titanium in Fluoride-Added LiCl–KCl–CsCl Molten Salt

2020 ◽  
Vol 61 (8) ◽  
pp. 1651-1656
Author(s):  
Kazuhiro Kumamoto ◽  
Akihiro Kishimoto ◽  
Tetsuya Uda
Keyword(s):  
Low Temperature ◽  
Molten Salt

scholarly journals Low-Temperature Molten Salt Electrolytes for Membrane-Free Sodium Metal Batteries

2015 ◽  
Vol 162 (14) ◽  
pp. A2729-A2736 ◽  
Author(s):  
Brian L. Spatocco ◽  
Takanari Ouchi ◽  
Guillaume Lambotte ◽  
Paul J. Burke ◽  
Donald R. Sadoway
Keyword(s):  
Low Temperature ◽  
Molten Salt ◽  
Sodium Metal ◽  
Molten Salt Electrolytes
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