Title:
METHOD FOR SEPARATING NITRATE IONS
Document Type and Number:
Japanese Patent JP2016155106
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for separating nitrate ions by using an ion exchange membrane which has sufficient ion exchange performance and durability and is hardly deteriorated in ion exchange performance even if an electrodialyzer is operated for a long time, which can selectively separate nitrate ions.SOLUTION: There is provided a method for selectively separating nitrate ions from an aqueous solution containing nitrate ions and different kinds of anions by electrodialysis, wherein the electrodialysis is carried out by using an ion exchange membrane including a copolymer (P) comprising a vinyl alcohol-based polymer component (A), a vinylene-based polymer component (B) and a polymer component (C) having an ionic group as constituent components as the cation exchange membrane and/or the anion exchange membrane.SELECTED DRAWING: None
Inventors:
KAMATA YASUSUKE
FUJIWARA NAOKI
WAKUI TAKASHI
FUJIWARA NAOKI
WAKUI TAKASHI
Application Number:
JP2015035873A
Publication Date:
September 01, 2016
Filing Date:
February 25, 2015
Export Citation:
Assignee:
KURARAY CO
International Classes:
C02F1/469; B01D61/44; B01D69/10; B01D69/12; B01D71/38; B01D71/44; B01D71/82; B01J39/20; B01J41/14; B01J47/12; C08F16/06; C08F20/38; C08F22/24; C08J5/22
Attorney, Agent or Firm:
Mitsuo Tanaka
Takuji Yamada
Kenichi Morizumi
Kawazoe Masashi
Takuji Yamada
Kenichi Morizumi
Kawazoe Masashi
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