METHOD FOR RECOVERING ACTIVITY OF ION EXCHANGER AND AGENT FOR USE IN RECOVERING ACTIVITY OF ANION EXCHANGER

WIPO Patent Application WO/2003/047754

A1

A method for recovering the activity of an ion exchanger (ion−exchange resin, ion−exchange film, etc.) which is difficult to be regenerated by a normal reversible treatment, which comprises giving the same electric charge as that of the ion−exchange group of the ion exchanger: and a method for recovering the activity of an ion exchanger which is difficult to be regenerated by a normal reversible treatment, which comprises giving the electric charge opposite to that of the charged substance of the ion exchanger. The method allows the recovery of the activity of such an ion exchanger. In a preferred embodiment, at least one compound selected from among organic amine compounds and organic ammonium compounds being capable of having a charge through dissociation in a solution is used as an agent recovering the activity of an anion exchanger.

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KAMEGAI MARI (JP)
KOBORI DAIJIRO (JP)
FUKAWA JUNPEI (JP)
KENMOCHI CHIKA (JP)

PCT/JP2002/012675

June 12, 2003

December 03, 2002

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ORGANO CORP (JP)
KAMEGAI MARI (JP)
KOBORI DAIJIRO (JP)
FUKAWA JUNPEI (JP)
KENMOCHI CHIKA (JP)

B01J49/00; B01J49/90; (IPC1-7): B01J49/00

JPH10225644A	1998-08-25
JPS61146350A	1986-07-04
JPH09206605A	1997-08-12
JPH09234379A	1997-09-09
JPS6466598A	1989-03-13
JPS59225743A	1984-12-18

Ban, Toshimitsu (1-9 Nishishinjuku 8-chome Shinjuku-ku, Tokyo, JP)

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