Chinese Journal of Applied Chemistry ›› 1993, Vol. 0 ›› Issue (2): 13-16.

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TRANSPORT OF Ag (Ⅰ)THROUGH LIQUID MEMBRANE CONTAINING AN OLIGOMER OF EPITHIOPROPYL BUTYL ETHER

Xu Yuwu, Wang Ying, Dong Shihua   

  1. Department of Chemistry, Wuhan University, 430072 Wuhan
  • Received:1992-02-28 Revised:1992-07-28 Published:1993-04-10 Online:1993-04-10

Abstract: The oligomer of epithiopropyl butyl ether (PSB) with Mn=1600 was synthesized and its transport properties as a mobile carrier for Ag (Ⅰ) in bulk liquid membrane system were studied. It was found that the presence of the oligomer carrier in liquid membrane is necessary for transport of Ag (Ⅱ) and the transportion rate of Ag (Ⅰ) is dependent on the carrier concentration in liquid membrane, the thickness of liquid membrane,the acidity and the concentration of Ag(Ⅰ) in source phase and the additives in receiving phase. In the system AgNO3 (aq)/PSB-ClCH2CH2Cl/NH3·H2O(aq),Ag(Ⅰ) can be transported from source phase to receiving phase completely under the appropriate conditions and only the Ag(Ⅰ) can be transported to receiving phase selectively from Ag(Ⅰ)-K(Ⅰ)-Cu (Ⅱ)-Zn (Ⅱ) mixtrue. The carrier can be used repeatedly without marked lose of its activity and selectivity.

Key words: liquid membrane separation, silver, oligomer, epithiopropy1 buty1 ether