IL41983A - Membranes for reverse osmosis - Google Patents
Membranes for reverse osmosisInfo
- Publication number
- IL41983A IL41983A IL41983A IL4198373A IL41983A IL 41983 A IL41983 A IL 41983A IL 41983 A IL41983 A IL 41983A IL 4198373 A IL4198373 A IL 4198373A IL 41983 A IL41983 A IL 41983A
- Authority
- IL
- Israel
- Prior art keywords
- cellulose acetate
- solution
- weight
- membrane
- dioxan
- Prior art date
Links
- 239000012528 membrane Substances 0.000 title claims description 58
- 238000001223 reverse osmosis Methods 0.000 title claims description 9
- 229920002301 cellulose acetate Polymers 0.000 claims description 48
- 239000000203 mixture Substances 0.000 claims description 42
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 claims description 38
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 claims description 35
- 238000005266 casting Methods 0.000 claims description 33
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 27
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 21
- 239000000758 substrate Substances 0.000 claims description 15
- 239000002904 solvent Substances 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 3
- RYPVUNGPPCYIDC-UHFFFAOYSA-N 1,4-dioxane;propan-2-one Chemical compound CC(C)=O.C1COCCO1 RYPVUNGPPCYIDC-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims 2
- 239000001913 cellulose Substances 0.000 claims 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000000151 deposition Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 description 36
- 150000003839 salts Chemical class 0.000 description 15
- 230000004907 flux Effects 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229920001747 Cellulose diacetate Polymers 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229920002284 Cellulose triacetate Polymers 0.000 description 3
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 229920004933 Terylene® Polymers 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000011800 void material Substances 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
- B01D67/0011—Casting solutions therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
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)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1696872A GB1388034A (en) | 1972-04-12 | 1972-04-12 | Membranes for reverse osmosis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL41983A0 IL41983A0 (en) | 1973-06-29 |
| IL41983A true IL41983A (en) | 1976-04-30 |
Family
ID=10086878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL41983A IL41983A (en) | 1972-04-12 | 1973-04-09 | Membranes for reverse osmosis |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3807571A (el) |
| JP (1) | JPS5620050B2 (el) |
| DE (1) | DE2318244C2 (el) |
| FR (1) | FR2180007B1 (el) |
| GB (1) | GB1388034A (el) |
| IL (1) | IL41983A (el) |
| NL (1) | NL7305085A (el) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5818125B2 (ja) * | 1974-09-20 | 1983-04-11 | 東レ株式会社 | ギヤクシントウマク ノ セイホウ |
| JPS5222172A (en) * | 1975-08-12 | 1977-02-19 | Sumitomo Chem Co Ltd | Filter medium for capturing selectively metal ions |
| US4077407A (en) * | 1975-11-24 | 1978-03-07 | Alza Corporation | Osmotic devices having composite walls |
| DE2820265C2 (de) * | 1978-05-10 | 1982-02-25 | Gkss - Forschungszentrum Geesthacht Gmbh, 2000 Hamburg | Semipermeable asymmetrische Membranen für die Meerwasserentsalzung |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3497072A (en) * | 1966-05-02 | 1970-02-24 | Aerojet General Co | Reverse osmosis membrane and method of manufacture |
-
1972
- 1972-04-12 GB GB1696872A patent/GB1388034A/en not_active Expired
-
1973
- 1973-04-09 IL IL41983A patent/IL41983A/en unknown
- 1973-04-09 US US00349470A patent/US3807571A/en not_active Expired - Lifetime
- 1973-04-11 FR FR7313149A patent/FR2180007B1/fr not_active Expired
- 1973-04-11 DE DE2318244A patent/DE2318244C2/de not_active Expired
- 1973-04-11 NL NL7305085A patent/NL7305085A/xx active Search and Examination
- 1973-04-12 JP JP4179073A patent/JPS5620050B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2180007B1 (el) | 1977-02-04 |
| JPS5620050B2 (el) | 1981-05-11 |
| NL7305085A (el) | 1973-10-16 |
| DE2318244A1 (de) | 1973-10-25 |
| FR2180007A1 (el) | 1973-11-23 |
| JPS4917377A (el) | 1974-02-15 |
| IL41983A0 (en) | 1973-06-29 |
| US3807571A (en) | 1974-04-30 |
| GB1388034A (en) | 1975-03-19 |
| DE2318244C2 (de) | 1983-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3408315A (en) | Nylon membrane filter | |
| US3607329A (en) | Cellulose acetate butyrate semipermeable membranes and their production | |
| US3497072A (en) | Reverse osmosis membrane and method of manufacture | |
| GB2026381A (en) | Membrane having a porous surface | |
| US4026978A (en) | Method of making asymmetric cellulose triacetate membranes | |
| Elkony et al. | Effect of cellulose acetate/cellulose triacetate ratio on reverse osmosis blend membrane performance | |
| JPS6252602B2 (el) | ||
| IL41983A (en) | Membranes for reverse osmosis | |
| JPS6140095B2 (el) | ||
| US3592953A (en) | Preparation of high flow cellulose derivative reverse osmosis membrane | |
| GB1603156A (en) | Membranes for reverse osmosis | |
| JPS59225703A (ja) | 多孔性膜及びその製造方法 | |
| JPS63503525A (ja) | ポリアミド膜 | |
| JPS5837842B2 (ja) | 限外濾過膜の製造方法 | |
| US3460683A (en) | Cellulose acetate membranes | |
| JPS5827964B2 (ja) | 半透膜の製造方法 | |
| US2213252A (en) | Coating | |
| US1836946A (en) | Plastic film or sheet containing cellulose nitrate | |
| JPS6297612A (ja) | 逆浸透膜の製造方法 | |
| JPS61204011A (ja) | 逆浸透膜の製造方法 | |
| Elford et al. | Graded Collodion membranes for bacteriological studies. Practical aspects of the mechanism determining the character of the membrane, and the roles of particular solvent constituents | |
| Dimov et al. | Preparation of ultrafiltration membranes with different permeability from polyacrylonitrile | |
| JPH0699045A (ja) | 気体分離用非対称膜の製造方法 | |
| US2234565A (en) | Moistureproof coating | |
| JPS6025511A (ja) | 多孔性ポリサルホン膜の製造方法 |