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Nuclear Fuel Science Lab
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The lab separates useful nuclides from high-level radioactive liquid waste for use as resources and in medicine.
AboutAbout the lab
High-level radioactive liquid waste becomes neither "high-level" nor "waste."
The lab studies technologies for separating and extracting nuclides from the high-level radioactive liquid waste generated when spent nuclear fuel is reprocessed.
Sorting "nuclear waste" and recovering the valuable components is thought to reduce the volume of radioactive waste and lower its toxicity.
The lab is also studying the use of the separated radioisotopes (RIs) as raw materials for radiopharmaceuticals used in cancer treatment.
The lab aims to reduce environmental burden while using resources and energy efficiently.
Key terms
- High-level radioactive liquid waste
- A liquid with extremely high radioactivity that is produced when spent nuclear fuel is reprocessed.
- Nuclide
- A type of atom, distinguished by the number of protons and neutrons in its nucleus.
- Extraction chromatography
- A method in which a liquid is passed through solid particles impregnated with an extractant, which selectively captures the target components so they can be separated.
ResearchResearch themes
To reduce the volume and toxicity of high-level radioactive liquid waste, the lab develops innovative nuclide separation processes. It also studies technologies for using the useful radioisotopes it separates in medicine and other fields.
*Illustrative imageDeveloping nuclide separation processes for liquid waste
The lab focuses on extraction chromatography, which uses solids loaded with an extractant. When composite particles of porous silica and polymer are used as the support, adsorption and desorption are faster and radiation resistance is higher than with polymer-only particles.
*Illustrative imageUsing radioisotopes for cancer radiotherapy
The lab is working on preparing cesium-137 sources from β-titanic acid particles 100–500 μm in diameter for use in cancer brachytherapy. It is also developing drugs for internal radiation therapy that use yttrium-90, the daughter nuclide of strontium-90.
MembersFaculty
- ProfessorSeongyun Kim
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Radiochemistry Laboratory ( )” IAEA Imagebank / CC BY 2.0 (cropped)
- Developing nuclide separation processes for liquid waste: “Separation of chlorophylls and carotene” Irene Munao / CC BY-SA 4.0 (cropped)
- Using radioisotopes for cancer radiotherapy: “Radioactive Seeds ( )” Nuclear Regulatory Commission from US / Public domain (cropped)
- Related lab (Watanabe-Chida-Seki Lab): “Low Level Waste Disposal ( )-es” Nuclear Regulatory Commission from US de la traducción Pitana / CC BY-SA 4.0 (cropped)
- Related lab (Kirishima Lab): “Radiochemistry work in Glovebox” Idaho National Laboratory / CC BY 2.0 (cropped)
- Related lab (Aoki-Miyake Lab): “Levitation of a magnet on a superconductor” Julien Bobroff (user:Jubobroff), Frederic Bouquet (user:Fbouquet), Jeffrey Quilliam, LPS, Orsay, France / CC BY-SA 3.0 (cropped)
- Related lab (Watabe Lab): “Cyclotron ARRONAX” Popocatomar / CC BY-SA 4.0 (cropped)
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