JPS5522311A - Regeneration of ion exchange membrane - Google Patents
Regeneration of ion exchange membraneInfo
- Publication number
- JPS5522311A JPS5522311A JP9465678A JP9465678A JPS5522311A JP S5522311 A JPS5522311 A JP S5522311A JP 9465678 A JP9465678 A JP 9465678A JP 9465678 A JP9465678 A JP 9465678A JP S5522311 A JPS5522311 A JP S5522311A
- Authority
- JP
- Japan
- Prior art keywords
- ion exchange
- exchange membrane
- electrolysis
- membrane
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
PURPOSE: To carry out simply regeneration treatment without promoting the deterioration of membrane by carrying out the regeneration treatment under condition under which pH is not lowered to less than 6 in the electrolysis of alkali metal salts by an ion exchange membrane process.
CONSTITUTION: In the electrolysis of alkali metal salts by an ion exchange membrane process, the surface of the ion exchange membrane faced an anode and having an increased electric resistance, is contacted with a solution of more than pH6, preferably pH7 to 10. The surface of the membrane faced a cathode is contracted with below 1N preferably below 0.5N solution of an aqueous caustic alkali solution. In order to conduct this procedure more effectively, it is preferred to slightly apply direct current of preferably 0.003 to 0.3A/dm2 under the condition described above in the same divection as that in the electrolysis, whereby the ion membrane can be regenerated more rapidly.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9465678A JPS5522311A (en) | 1978-08-04 | 1978-08-04 | Regeneration of ion exchange membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9465678A JPS5522311A (en) | 1978-08-04 | 1978-08-04 | Regeneration of ion exchange membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5522311A true JPS5522311A (en) | 1980-02-18 |
Family
ID=14116289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9465678A Pending JPS5522311A (en) | 1978-08-04 | 1978-08-04 | Regeneration of ion exchange membrane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5522311A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690739A (en) * | 1985-09-17 | 1987-09-01 | Nott Babu R | Electrolytic process for producing extremely low chloride anion exchange resins |
| JPS63121182U (en) * | 1987-01-30 | 1988-08-05 | ||
| JPS641106U (en) * | 1987-06-24 | 1989-01-06 | ||
| JP2009242889A (en) * | 2008-03-31 | 2009-10-22 | Nippon Paper Industries Co Ltd | Method for stopping and maintaining electrolyte cell used for preparing polysulfide and preparation method of polysulfide |
| JP2012515848A (en) * | 2009-01-23 | 2012-07-12 | ダウ グローバル テクノロジーズ エルエルシー | Membrane repair |
-
1978
- 1978-08-04 JP JP9465678A patent/JPS5522311A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690739A (en) * | 1985-09-17 | 1987-09-01 | Nott Babu R | Electrolytic process for producing extremely low chloride anion exchange resins |
| JPS63121182U (en) * | 1987-01-30 | 1988-08-05 | ||
| JPS641106U (en) * | 1987-06-24 | 1989-01-06 | ||
| JP2009242889A (en) * | 2008-03-31 | 2009-10-22 | Nippon Paper Industries Co Ltd | Method for stopping and maintaining electrolyte cell used for preparing polysulfide and preparation method of polysulfide |
| JP2012515848A (en) * | 2009-01-23 | 2012-07-12 | ダウ グローバル テクノロジーズ エルエルシー | Membrane repair |
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