Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Solvent Extraction Separation of Nd and Pr from Chloride Solution using PC88A and D2EHPA

염산용액(鹽酸溶液)에서 PC88A와 D2EHPA에 의한 Nd와 Pr의 분리추출(分離抽出)

  • Park, Joo-Ho (Dept. of Advanced Materials Science & Engineering, Mokpo National Univ.) ;
  • Jeon, Ho-Seok (Division of Minerals Utilization and Materials, Korea Institute of Geoscience and Mineral Resources) ;
  • Lee, Man-Seung (Dept. of Advanced Materials Science & Engineering, Mokpo National Univ.)
  • 박주호 (목포대학교 신소재공학과) ;
  • 전호석 (한국지질자원연구원 광물자원연구본부) ;
  • 이만승 (목포대학교 신소재공학과)
  • Received : 2013.05.23
  • Accepted : 2013.07.01
  • Published : 2013.10.30
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Abstract

Solvent extraction experiments have been performed to investigate an optimum condition to separate Nd and Pr from chloride solutions using PC88A and D2EHPA. In our experimental ranges, the distribution coefficients of Nd were higher than those of Pr. In both of PC88A and D2EHPA extractant system, our results indicated that the increase in concentration ratio of extractant to metal had a great effect on the extraction and separation of the two metals. In extraction with saponified D2EHPA, the initial pH of the aqueous solution and saponification degree had some effect on the extraction of the two metals but little effect on the separation factor.

Nd와 Pr이 함유된 염산용액에서 PC88A와 D2EHPA에 의한 두 금속의 분리에 적합한 조건을 조사하기 위해 용매추출실험을 수행하였다. 본 연구의 실험조건에서 Nd의 분배계수가 Pr의 분배계수보다 컸다. PC88A와 D2EHPA로 추출하는 경우 금속과 추출제와의 농도비의 증가가 두 금속의 추출 및 분리에 큰 영향을 미쳤다. D2EHPA의 비누화율과 초기 pH는 두 금속의 추출에는 큰 영향을 미치지만, 분리인자에는 큰 변화가 없었다.

Keywords

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