| 摘要 |
PROBLEM TO BE SOLVED: To provide a method which can efficiently remove fluorine ions by an electrodialyzer, can suppress occurrence of slime and stably removes fluorine ions by electrodialysis using an ion exchange membrane excellent in durability for a long period of time.SOLUTION: There is provided a method for removing fluorine ions from an aqueous solution containing fluorine ions by an electrodialyzer in which a cation exchange membrane and an anion exchange membrane are alternately arranged between a cathode and an anode, wherein 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 is used as the cation exchange membrane and/or the anion exchange membrane.SELECTED DRAWING: None |
