JPS5621605A - Separation of liquid by semipermeable composite membrane consisting of furufryl alcohol polymer - Google Patents
Separation of liquid by semipermeable composite membrane consisting of furufryl alcohol polymerInfo
- Publication number
- JPS5621605A JPS5621605A JP9508779A JP9508779A JPS5621605A JP S5621605 A JPS5621605 A JP S5621605A JP 9508779 A JP9508779 A JP 9508779A JP 9508779 A JP9508779 A JP 9508779A JP S5621605 A JPS5621605 A JP S5621605A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- composite membrane
- treated
- membrane
- sulfite
- 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
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
PURPOSE: To prevent the lowering of the separating capacity of the composite semipermeable membrane by adding a sulfite, etc., to the liqiud to be treated and performing its separating treatment within 5 minutes in the separation of inclusions from the liquid by a reverse osmosis method using the specific semipermeable composite membrane.
CONSTITUTION: By using the composite membrane as a barrier layer, consisting of a thin membrane formed by coating a solution containing furfuryl alcohol, a multivalent organic acid reactive to furfuryl alcohol, a polyhydric alcohol, and an acid catalyst, e.g., sulfuric acid, on a porous supporting membrane consisting of a homopolymer or a blended polymer, followed by cross-linking polymerization, industrial water, sea water, etc., is treated to separate valuables present from the water. In this case, 5W100ppm of a sulfite, a bisulfite, or sulfurous acid gas is added to the liquid to be treated and the liquid is treated by the reverse osmosis method within 5min. Because active oxygen derived from dissolved oxygen in the liquid during the treatment is soon inactivated by a sulfite, etc., the oxidation of the composite membrane by the active oxygen can be prevented and thereby its own separating capability can be protected from deterioration. Thus, the durability of the composite membrane can be raised.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9508779A JPS5621605A (en) | 1979-07-27 | 1979-07-27 | Separation of liquid by semipermeable composite membrane consisting of furufryl alcohol polymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9508779A JPS5621605A (en) | 1979-07-27 | 1979-07-27 | Separation of liquid by semipermeable composite membrane consisting of furufryl alcohol polymer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5621605A true JPS5621605A (en) | 1981-02-28 |
Family
ID=14128142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9508779A Pending JPS5621605A (en) | 1979-07-27 | 1979-07-27 | Separation of liquid by semipermeable composite membrane consisting of furufryl alcohol polymer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5621605A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57207503A (en) * | 1981-06-15 | 1982-12-20 | Toray Ind Inc | Preservation method for semipermeable composite membrane |
| JPS5814907A (en) * | 1981-07-21 | 1983-01-28 | Toray Ind Inc | Protection of reverse osmosis membrane |
| JPS5980304A (en) * | 1982-10-27 | 1984-05-09 | Toray Eng Co Ltd | Reverse osmosis treatment of liquid containing organic and inorganic substances by employing semi-permeable composite membrane |
| WO2007076595A1 (en) * | 2005-12-30 | 2007-07-12 | Tekion, Inc. | Composite polymer electrolyte membranes and electrode assemblies for reducing fuel crossover in direct liquid feed fuel cells |
| US7459487B2 (en) * | 2005-02-16 | 2008-12-02 | The University Of Hong Kong | Polymer composite membrane and method of making the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5124586A (en) * | 1974-08-26 | 1976-02-27 | Ebara Infilco | DATSUENHOHO |
| JPS5474285A (en) * | 1977-11-25 | 1979-06-14 | Sasakura Eng Co Ltd | Reverse osmotic pressure apparatus control method |
-
1979
- 1979-07-27 JP JP9508779A patent/JPS5621605A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5124586A (en) * | 1974-08-26 | 1976-02-27 | Ebara Infilco | DATSUENHOHO |
| JPS5474285A (en) * | 1977-11-25 | 1979-06-14 | Sasakura Eng Co Ltd | Reverse osmotic pressure apparatus control method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57207503A (en) * | 1981-06-15 | 1982-12-20 | Toray Ind Inc | Preservation method for semipermeable composite membrane |
| JPS5814907A (en) * | 1981-07-21 | 1983-01-28 | Toray Ind Inc | Protection of reverse osmosis membrane |
| JPS5980304A (en) * | 1982-10-27 | 1984-05-09 | Toray Eng Co Ltd | Reverse osmosis treatment of liquid containing organic and inorganic substances by employing semi-permeable composite membrane |
| US7459487B2 (en) * | 2005-02-16 | 2008-12-02 | The University Of Hong Kong | Polymer composite membrane and method of making the same |
| WO2007076595A1 (en) * | 2005-12-30 | 2007-07-12 | Tekion, Inc. | Composite polymer electrolyte membranes and electrode assemblies for reducing fuel crossover in direct liquid feed fuel cells |
| US7368200B2 (en) | 2005-12-30 | 2008-05-06 | Tekion, Inc. | Composite polymer electrolyte membranes and electrode assemblies for reducing fuel crossover in direct liquid feed fuel cells |
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