To provide a method for controlling a reversed micelle size upon producing reversed micelle in an extraction medium phase of the two liquid phase system consisting of water and an extraction medium without adding a large amount of electrolytes.
The method for controlling the reversed micelle size in the extraction medium comprises adding an electrically neutral ligand (molecular ligand) in the two liquid phase system (reversed micelle extraction system) to extract a metal ion or polymer in an aqueous solution into a medium containing the reversed micelle. The control of the reversed micelle size can be performed by only changing the concentration of the molecular ligand to be added when the molecular ligand having the effect to reduce the reversed micelle inner core aqueous phase is utilized. The method is capable of reducing the reversed micelle size while the large extraction ability to the metal is retained. Further, the deacidification or the like are not required for discharging the aqueous phase because nothing is added to the aqueous phase. Also, the extraction medium phase can be utilized repeatedly because the surfactant and molecular ligand are scarcely eluted into the aqueous phase.
COPYRIGHT: (C)2008,JPO&INPIT
Kojiro Shimojo
| JP2003275751A | ||||
| JP2004149738A | ||||
| JP2005290481A | ||||
| JP2006036866A |
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Shurin Sakurai