A draw solute and an improved forward osmosis method
US-2016082391-A1 · Mar 24, 2016 · US
Ionic liquid for forward osmosis process and forward osmosis process
US10016725B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10016725-B2 |
| Application number | US-201615392281-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 28, 2016 |
| Priority date | Aug 30, 2016 |
| Publication date | Jul 10, 2018 |
| Grant date | Jul 10, 2018 |
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Abstract
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A forward osmosis process is provided, which includes separating a feed part and a draw solution part by a semi-permeable film. An ionic liquid is introduced into the draw solution part, and brine is introduced into the feed part. The brine has an osmotic pressure lower than that of the ionic liquid, so that pure water of the brine permeates through the semi-permeable film, enters the draw solution part, and mixes with the ionic liquid to form a draw solution. The draw solution was obtained out of the draw solution part to be left to stand at room temperature, so that the draw solution separated into a water layer and an ionic liquid layer. The ionic liquid includes
First claim
Opening claim text (preview).
What is claimed is: 1. A forward osmosis process, comprising: separating a feed part and a draw solution part by a semi-permeable film; introducing an ionic liquid into the draw solution part; introducing brine into the feed part, wherein the brine has an osmotic pressure lower than that of the ionic liquid, in which pure water of the brine permeates through the semi-permeable film, enters the draw solution part, and mixes with the ionic liquid to form a draw solution; and obtaining the draw solution out of the draw solution part; letting the draw solution stand at room temperature, thereby the draw solution separating into a water layer and an ionic liquid layer, wherein room temperature ranges between 15° C. to 30° C., and wherein the ionic liquid is 2. The forward osmosis process as claimed in claim 1 , wherein the ionic liquid is and the ionic liquid layer and the water layer have a weight ratio of 30:70 to 50:50 in the step of separating the draw solution into the water layer and the ionic liquid layer. 3. The forward osmosis process as claimed in claim 1 , wherein the ionic liquid is and the ionic liquid layer and the water layer have a weight ratio of 10:90 to 40:60 in the step of separating the draw solution into the water layer and the ionic liquid layer. 4. The forward osmosis process as claimed in claim 1 , further comprising introducing the ionic liquid layer into the draw solution part after the step of separating the draw solution into the water layer and the ionic liquid layer. 5. The forward osmosis process as claimed in claim 1 , wherein the step of introducing the brine into the feed part is continuously introducing seawater into the feed part. 6. The forward osmosis process as claimed in claim 1 , further comprising a step of stirring the pure water and the ionic liquid in the draw solution part for mixing the pure water and the ionic liquid to form the draw solution.
Assignees
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Classifications
Acyclic saturated phosphonium compounds · CPC title
with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atom · CPC title
- B01D61/005Primary
Osmotic agents; Draw solutions · CPC title
Seawater, e.g. for desalination · CPC title
by forward osmosis · CPC title
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- What does patent US10016725B2 cover?
- A forward osmosis process is provided, which includes separating a feed part and a draw solution part by a semi-permeable film. An ionic liquid is introduced into the draw solution part, and brine is introduced into the feed part. The brine has an osmotic pressure lower than that of the ionic liquid, so that pure water of the brine permeates through the semi-permeable film, enters the draw solu…
- Who is the assignee on this patent?
- Ind Tech Res Inst
- What technology area does this patent fall under?
- Primary CPC classification B01D61/005. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jul 10 2018 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).