Korea Atomic Energy Research Institute

Korea Hydro Nuclear Power Co., Ltd.

Eil-Hee Lee

Kwang-Wook Kim

Jae-Won Lee

Hyun-Soo Park

Geun-Il Park

Dong-Yong Chung

Jae-Hyung Yoo

Keun-Young Lee

Sang-Ho Na

Jei-Kwon Moon

Young-Joon Shin

Jae-Hyun Yoo

Kune-Woo Lee

Han-Bum Yang

Jung-Won Lee

Kee-Chan Song

Kweon-Ho Kang

The present invention relates to a treatment method of spent uranium catalyst, and more specifically, to a method which can considerably reduce the volume of the spent uranium catalyst to be disposed of and simultaneously minimize secondary wastes that can be generated during the process of treating the spent uranium catalyst.

Treatment method of spent uranium catalyst

Disclosed is a fiber bundle contactor in which fibers are packed in high density within a column. When two liquid phases flowing in parallel, one of which contains the desired components, are contacted with the entryway of the highly packed fiber bundle, the two liquid phases are very thinly dispersed among gaps around the respective fibers by capillary action induced by the clearance between the fibers. By means of this capillary action, the two liquid phases are maintained as a continuous stream, and the two phases are brought into very intimate contact, thereby ensuring a very large surface area for liquid-liquid extraction to proceed.

Highly packed fiber bundle contactor and static liquid-liquid contacting

An electrolyzing apparatus using a circulating capillary tube type mercury bundled electrode is disclosed, in which the advantage of mercury that it has a high overpotential for hydrogen evolution reaction compared with the general solid metals is preserved, and the disadvantage of mercury that it cannot be so shaped as to have a large contact area is overcome. That is, the mercury contact area is maximized. The oxidation and reduction reactions which occur in the vertically circulating capillary tube type mercury bundle electrode electrolyzing apparatus can be defined by a simple formula so as to quantize their analysis. Based on this formula, the stability checking, and the adjustment of the oxidation state of metal ions in the solution can be carried out in a rapid and continuous manner. Further, the concentration of the metal ions and the oxidation state of the metal ions within the solution can be analyzed in the same manner.

Method and apparatus for electrolyzing by using vertical circulating

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Daejeon-Si, South Korea

Eil-Hee Lee