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Patent Searching and Data


Title:
METHOD FOR SELECTIVE SEPARATION OF IODINE ION, AND METHOD FOR PRODUCING ALKALI SALT OF IODINE ION
Document Type and Number:
WIPO Patent Application WO/2003/014028
Kind Code:
A1
Abstract:
A method for selective separation of an iodine ion, characterized in that an iodine ion is selectively separated from an aqueous solution containing the iodine ion by the electrodialysis method. The method allows the preparation of a solution containing selectively an iodine ion as an alkali salt without the step of isolating iodine, reduce the number of steps required for obtaining an iodine ion as an alkali salt, and eliminates the need for the use of an auxiliary raw material and for the treatment of a by−product, which results in the production of an alkali salt of an iodine ion with improved efficiency and at a reduced cost.

Inventors:
DOYA MASAHARU (JP)
FUJISHIMA MASANORI (JP)
KURAI HIROKO (JP)
Application Number:
PCT/JP2001/010890
Publication Date:
February 20, 2003
Filing Date:
December 12, 2001
Export Citation:
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Assignee:
TOHO EARTHTECH KK (JP)
DOYA MASAHARU (JP)
FUJISHIMA MASANORI (JP)
KURAI HIROKO (JP)
International Classes:
B01D61/44; C01B9/06; C01D3/12; C02F1/469; (IPC1-7): C02F1/469; B01D61/44; B01D61/50; C01B9/06; C01D3/12
Foreign References:
US4207157A1980-06-10
JPH0871387A1996-03-19
JP2001293472A2001-10-23
JP2001314864A2001-11-13
US5219717A1993-06-15
Attorney, Agent or Firm:
Kabasawa, Joo (Shinjuku 3-chome Shinjuku-ku, Tokyo, JP)
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