Chem. J. Chinese Universities ›› 1990, Vol. 11 ›› Issue (4): 336.

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The Liquid-Liquid and Liquid-Solid Extraction System of Polyvinyl Pyrrodidone- (NH4)2SO4-H2O

Li Buhai, Wang Kefu   

  1. Department of Chemistry, South Central Institute for National Minorities, Wuhan
  • Received:1988-07-16 Online:1990-04-24 Published:1990-04-24

Abstract: The aqueous solution of polyvinyl pyrrodidone can be separated into two liquid or a liquid and a solid phases in the presence of (NH4)2SO4. The conditions of phase separation were found. The distribution behaviour of water-soluble ligands and their metal chelates between the two phases were investigated. The quantitative extraction separation of Zr(Ⅳ )-La( Ⅲ ) was carried out. The extraction machanism for PVPphases was also studied.

Key words: Extraction, Poly vinyl pyrrodidone, Zirconiun, Lanthanum

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