Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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The Solvent Extraction of Uranium(VI) and Other Metal Ions with Pyrazolone Chelating Agents -The Studios on the Rad-Waste Treatment(1)-

킬레이팅 화합물에 의한 우라늄의 용매추출 -방사성 폐기물 처리 처분 연구(I)-

  • Hun Hwee Park (Rad-Waste Division DaeDuk Engineering Center, Korea Energy Research Institute) ;
  • Nak June Sung (Rad-Waste Division DaeDuk Engineering Center, Korea Energy Research Institute)
  • Published : 1983.06.01
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Abstract

The chelating agent with $\beta$-diketo funtional group, 1-phenyl-3-methyl-4-acyl-pyrazolone-5-one, has been used in separating and extracting radionuclides in a waste solution. The derivatives of this pyrazolone compound, prepared by different acyl groups, were synthesized and examined to figure out the extracting ability for Uranium (VI) and Zirconium (IV). The product prepared with succinic anhydride, called succinyl pyrazolone, showed excellent extraction for uranium (VI) in a chloroform solvent system. This result indicates that acyl pyrazolones having carboxylic acid group as a functional group forming $\beta$-diketo functionality are very selective for uranium (VI) and generally other metal ions with high valency.

$\beta$-diketo의 관능기를 가진 1-phenyl-3-methyl-4-acyl-pyrazolone-5-one (acyl pyrazolone)이라고 이름지어진 킬레이팅 화합물은 오랫동안 동위원소 분리 및 추출에 이용되어 왔다. 새로운 acylating 물질을 사용해서 만들어진 succinyl, malenyl 그리고 phthalyl pyrazolone이 우라늄이온(VI)과 고가의 산화상태를 지니는 다른 중금속의 추출에 이용되었다. Succinyl pyrazolone이 우라늄(VI) 추출에서 매우 뛰어나다는 것이 밝혀졌으며, 대체로 카르복실 관능기를 가진 킬레이팅 화합물이 우라늄(VI) 혹은 악티나이드 계열의 중금속 추출에 매우 효과적인 것으로 나타났다.

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