Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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A Study on Solvent Extraction of Metal by Salicylaldoxime

Salicylaldoxime에 의한 금속 추출에 관한 연구

  • Shin, Jeong-Ho (Dept. of Chem. Eng., College of Eng., Pusan National University) ;
  • Park, Sang-Wook (Dept. of Chem. Eng., College of Eng., Pusan National University) ;
  • Park, Dae-Won (Dept. of Chem. Eng., College of Eng., Pusan National University) ;
  • Lee, Kyung-Soo (Dept. of Chem. Eng., College of Eng., Pusan National University) ;
  • Jeong, Kap-Seop (Dept. of Ind. Chem., Dongmyung Junior College)
  • 신정호 (부산대학교 공과대학 화학공학과) ;
  • 박상욱 (부산대학교 공과대학 화학공학과) ;
  • 박대원 (부산대학교 공과대학 화학공학과) ;
  • 이경수 (부산대학교 공과대학 화학공학과) ;
  • 정갑섭 (동명전문대학 공업화학과)
  • Received : 1992.07.10
  • Accepted : 1992.12.10
  • Published : 1993.03.01
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Abstract

The kinetic and equilibrium characteristics of copper extraction by salicylaldoxime in chloroform and benzene were investigated. Equilibrium constants such as dissociation constant, distribution coefficient of salicylaldoxime and stability constant, distribution coefficient and molar extinction coefficient of oxime-Cu chelate were determined from absorbance. Extracted species of Cu-chelate were found to be ${\bar{CuR_2}}$. Overall initial extraction rate of copper by salicylaldoxime in chloroform was expressed by the following equation : $R=k[Cu^{2+}]{\bar{[HR]}}^{0.5}/[H^+]^{0.4}$.

salicylaldoxime에 의한 Cu의 용매추출에 있어서 추출평형 및 추출속도 등을 고찰하였다. 흡광도 측정으로부터 oxime의 분배정수와 해리정수를 구하고, oxime-Cu착화합물의 안정도 상수와 분배정수, 분자흡광계수 및 추출평형정수를 결정하였다. chloroform 및 benzene 용매하에 salicylaldoxime에 의한 Cu의 추출 화학종은 1:2의 형태인 ${\bar{CuR_2}}$였으며, 초기 추출속도실험으로부터 salicylaldoxime-chloroform에 의한 Cu의 총괄추출속도는 $R=k[Cu^{2+}]{\bar{[HR]}}^{0.5}/[H^+]^{0.4}$로 표시 되었다.

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Acknowledgement

Supported by : 한국과학재단