Method for cleaning membrane
US-2021197127-A1 · Jul 1, 2021 · US
Method for cleaning membrane
US11738310B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11738310-B2 |
| Application number | US-201916731631-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 31, 2019 |
| Priority date | Dec 31, 2019 |
| Publication date | Aug 29, 2023 |
| Grant date | Aug 29, 2023 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
A method for cleaning membrane is provided. The method includes, providing a membrane, introducing a thermo-sensitive ionic liquid to contact the membrane and perform a cleaning procedure to collect a cleaning solution, and layering the cleaning solution to form an aqueous layer and an ionic liquid layer at a specific temperature.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for cleaning a membrane, comprising: providing a membrane; introducing a thermo-sensitive ionic liquid having a cation and an anion to contact the membrane to proceed to a cleaning procedure to collect a cleaning solution, wherein the thermo-sensitive ionic liquid comprises and layering the cleaning solution to form an aqueous layer and an ionic liquid layer at a specific temperature. 2. The method for cleaning a membrane as claimed in claim 1 , wherein the membrane comprises foulants. 3. The method for cleaning a membrane as claimed in claim 2 , wherein the foulants comprise organics, inorganics or a combination thereof. 4. The method for cleaning a membrane as claimed in claim 2 , wherein the cleaning solution comprises the thermo-sensitive ionic liquid and the foulants. 5. The method for cleaning a membrane as claimed in claim 1 , wherein the membrane comprises an ultrafiltration (UF) membrane, a nanofiltration (NF) membrane or a reverse osmosis (RO) membrane. 6. The method for cleaning a membrane as claimed in claim 1 , wherein the thermo-sensitive ionic liquid has a concentration from 1 wt % to 30 wt %. 7. The method for cleaning a membrane as claimed in claim 1 , wherein the cleaning procedure has a temperature from 20° C. to 30° C. 8. The method for cleaning a membrane as claimed in claim 1 , wherein the cleaning procedure comprises a soaking step and a washing step. 9. The method for cleaning a membrane as claimed in claim 8 , wherein the soaking step has a period from 1 minute to 30 minutes. 10. The method for cleaning a membrane as claimed in claim 8 , wherein the washing step has a period from 1 minute to 30 minutes. 11. The method for cleaning a membrane as claimed in claim 1 , wherein the specific temperature is in a range from 25° C. to 90° C. 12. The method for cleaning a membrane as claimed in claim 11 , wherein the ionic liquid layer comprises the thermo-sensitive ionic liquid, and the aqueous layer comprises the foulants. 13. The method for cleaning a membrane as claimed in claim 1 , further comprising performing a first water rinse step before the step of introducing the thermo-sensitive ionic liquid. 14. The method for cleaning a membrane as claimed in claim 13 , wherein the first water rinse step has a temperature from 20° C. to 30° C. 15. The method for cleaning a membrane as claimed in claim 13 , wherein the first water rinse step has a period from 1 minute to 30 minutes. 16. The method for cleaning a membrane as claimed in claim 1 , further comprising performing a second water rinse step after the cleaning procedure. 17. The method for cleaning a membrane as claimed in claim 16 , wherein the second water rinse step has a temperature from 20° C. to 30° C. 18. The method for cleaning a membrane as claimed in claim 16 , wherein the second water rinse step has a period from 1 minute to 30 minutes.
Assignees
Inventors
Classifications
Industrial or commercial equipment, e.g. reactors, tubes or engines · CPC title
- B01D65/02Primary
Membrane cleaning or sterilisation {; Membrane regeneration} · CPC title
Carboxylic acids or salts thereof (soap C11D9/00) · CPC title
Sulfonic acids or sulfuric acid esters; Salts thereof · CPC title
Sulfonium or phosphonium compounds · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11738310B2 cover?
- A method for cleaning membrane is provided. The method includes, providing a membrane, introducing a thermo-sensitive ionic liquid to contact the membrane and perform a cleaning procedure to collect a cleaning solution, and layering the cleaning solution to form an aqueous layer and an ionic liquid layer at a specific temperature.
- Who is the assignee on this patent?
- Ind Tech Res Inst
- What technology area does this patent fall under?
- Primary CPC classification B01D65/02. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 29 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).