DE1642792B2 - Verfahren zur Herstellung halbdurchlässiger Membranen für die Durchführung der umgekehrten Osmose - Google Patents
Verfahren zur Herstellung halbdurchlässiger Membranen für die Durchführung der umgekehrten OsmoseInfo
- Publication number
- DE1642792B2 DE1642792B2 DE1642792A DEB0096988A DE1642792B2 DE 1642792 B2 DE1642792 B2 DE 1642792B2 DE 1642792 A DE1642792 A DE 1642792A DE B0096988 A DEB0096988 A DE B0096988A DE 1642792 B2 DE1642792 B2 DE 1642792B2
- Authority
- DE
- Germany
- Prior art keywords
- film
- solution
- membrane
- casting compound
- forming
- 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.)
- Withdrawn
Links
- 239000012528 membrane Substances 0.000 title claims description 51
- 238000000034 method Methods 0.000 title claims description 13
- 238000001223 reverse osmosis Methods 0.000 title claims description 6
- JIAARYAFYJHUJI-UHFFFAOYSA-L Zinc chloride Inorganic materials [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 21
- 238000005266 casting Methods 0.000 claims description 21
- 150000001875 compounds Chemical class 0.000 claims description 16
- 235000005074 zinc chloride Nutrition 0.000 claims description 11
- 239000011592 zinc chloride Substances 0.000 claims description 11
- 150000003839 salts Chemical class 0.000 claims description 9
- 238000007654 immersion Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- ZJZXSOKJEJFHCP-UHFFFAOYSA-M lithium;thiocyanate Chemical compound [Li+].[S-]C#N ZJZXSOKJEJFHCP-UHFFFAOYSA-M 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 229920002678 cellulose Polymers 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 2
- -1 compound Zinc chloride Chemical class 0.000 claims 1
- 229940125782 compound 2 Drugs 0.000 claims 1
- 239000000243 solution Substances 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 239000013505 freshwater Substances 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000013535 sea water Substances 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 229920002301 cellulose acetate Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- KSZVHVUMUSIKTC-UHFFFAOYSA-N acetic acid;propan-2-one Chemical compound CC(C)=O.CC(O)=O KSZVHVUMUSIKTC-UHFFFAOYSA-N 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- DKAGJZJALZXOOV-UHFFFAOYSA-N hydrate;hydrochloride Chemical compound O.Cl DKAGJZJALZXOOV-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- MPCRDALPQLDDFX-UHFFFAOYSA-L Magnesium perchlorate Chemical compound [Mg+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O MPCRDALPQLDDFX-UHFFFAOYSA-L 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical class OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/08—Polysaccharides
- B01D71/12—Cellulose derivatives
- B01D71/14—Esters of organic acids
- B01D71/16—Cellulose acetate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
- B01D67/0016—Coagulation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB11015/67A GB1158512A (en) | 1967-03-08 | 1967-03-08 | Process for the manufacture of Reverse Osmosis Membranes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE1642792A1 DE1642792A1 (de) | 1971-02-25 |
| DE1642792B2 true DE1642792B2 (de) | 1978-09-07 |
Family
ID=9978486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1642792A Withdrawn DE1642792B2 (de) | 1967-03-08 | 1968-03-08 | Verfahren zur Herstellung halbdurchlässiger Membranen für die Durchführung der umgekehrten Osmose |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE711950A (enrdf_load_html_response) |
| CH (1) | CH516942A (enrdf_load_html_response) |
| DE (1) | DE1642792B2 (enrdf_load_html_response) |
| ES (1) | ES351354A1 (enrdf_load_html_response) |
| FR (1) | FR1555331A (enrdf_load_html_response) |
| GB (1) | GB1158512A (enrdf_load_html_response) |
| IL (1) | IL29555A (enrdf_load_html_response) |
| NL (1) | NL6803244A (enrdf_load_html_response) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176668A (en) * | 1977-05-02 | 1979-12-04 | Amf Incorporated | Novel reconstituted tobacco sheets and process |
| DE3066996D1 (en) * | 1979-09-19 | 1984-04-19 | Aligena Ag | Porous semipermeable cellulose acetate membranes modified by ionic groups, process for their production and their use |
-
1967
- 1967-03-08 GB GB11015/67A patent/GB1158512A/en not_active Expired
-
1968
- 1968-03-01 IL IL29555A patent/IL29555A/en unknown
- 1968-03-05 FR FR1555331D patent/FR1555331A/fr not_active Expired
- 1968-03-07 NL NL6803244A patent/NL6803244A/xx unknown
- 1968-03-07 ES ES351354A patent/ES351354A1/es not_active Expired
- 1968-03-08 CH CH344268A patent/CH516942A/de not_active IP Right Cessation
- 1968-03-08 DE DE1642792A patent/DE1642792B2/de not_active Withdrawn
- 1968-03-08 BE BE711950D patent/BE711950A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES351354A1 (es) | 1969-12-01 |
| GB1158512A (en) | 1969-07-16 |
| FR1555331A (enrdf_load_html_response) | 1969-01-24 |
| IL29555A (en) | 1972-04-27 |
| BE711950A (enrdf_load_html_response) | 1968-07-15 |
| NL6803244A (enrdf_load_html_response) | 1968-09-09 |
| DE1642792A1 (de) | 1971-02-25 |
| CH516942A (de) | 1971-12-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BHJ | Nonpayment of the annual fee |