Korea Advanced Institute of Science and Technology

Korea Atomic Energy Research Institute

Jung Hoon Choi

Jeung Ku Kang

Hwan Seo Park

Jung Woo Lee

Geun-Il Park

Yoon Jeong Choi

Yung-Zun Cho

Hee-Chul Yang

Geun Il Park

Ki Rak Lee

Hee-Chul Eun

In Tae Kim

Hong Joo Ahn

Kyung Min Choi

Tae-Kyo Lee

Saji Augustine

Hyun Woo Kang

Weon Ho Shin

Seong Ho Yang

JunHong Kim

The present invention relates to a method of separating and removing a radioactive nuclide, particularly, C-14 and tritium from a radioactive waste resin, and an equipment therefor. The method of treating a radioactive waste resin of the present invention includes recycling of condensate water from which a C-14 radionuclide in the condensate water is removed, into a treatment part for a radioactive waste resin.

Method of treating radioactive waste resin and an equipment therefor

There are provided an apparatus and method for separating radioactive nuclides from a waste salt and recovering a refined salt, which are able to maximize process efficiency and operating efficiency of a process of regenerating a waste salt produced during a pyrochemical process of used nuclear fuel by converting the waste salt into a thermally stable form and distilling the waste salt under a reduced pressure using a single apparatus having two top covers which are mountable to replace radioactive nuclides included in the waste salt, and highly improve applicability and utility in a remote operation facility for disposal of a radioactive waste by further simplifying operation/handling compared with conventional processes.

Apparatus and method for separating radioactive nuclides and recovering refined salt from LiCl waste salt or LiCl-KCI eutectic waste salt

Disclosed are a novel hydrogen storage material with enhanced hydrogen storage capacity prepared by doping an organic framework material with light metal cations, and a method of using the same for hydrogen storage. The present inventive material has at least one phenyl group at each face of a triangular building unit, which is doped with metal cations such as alkali metal cations, alkali-earth metal cations, etc., so that the material exhibits greatly improved capacity of hydrogen absorption and desorption at room temperature and can provide hydrogen storage materials practically adapted for fuel batteries useable even at room temperature.

Metal cation-doped covalent organic framework derivatives for hydrogen storage and method of using the same

Disclosed are partially deactivated metal catalysts useful for modifying structures of nanomaterials. The present invention is also directed to a method for preparing the partially deactivated metal catalysts, which comprises patterning a substrate with micelles containing iron nanoparticles, removing the micelles from the patterned substrate to deposit the iron nanoparticles thereon, nitriding the iron nanoparticles using a nitrogen plasma, and exposing the nitrided iron nanoparticles to a mixture of ethanol and nitric acid to remove iron from the surface of the nitrided nanoparticles. The iron nitride metal catalyst with a nano-size according to the present invention comprises a core that includes deactivated iron nitride and an active shell surrounding the core. Thus, when preparing a carbon nanotube, the metal catalyst can be effectively used to control the number of walls formed in the carbon nanotube.

Partially deactivated metal catalysts and methods for preparing the same

Growing community of inventors

Daejeon, South Korea

Jung Hoon Choi