Methods and systems for electrochemical oxidation of polyfluoroalkyl and perfluroalkyl contaminants
US-2019185351-A1 · Jun 20, 2019 · US
Fluorocarbon destruction method
US12415738B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12415738-B2 |
| Application number | US-202117779596-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 19, 2021 |
| Priority date | Feb 21, 2020 |
| Publication date | Sep 16, 2025 |
| Grant date | Sep 16, 2025 |
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Abstract
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A method of destroying a fluorocarbon compound includes regenerating an adsorbent to remove the fluorocarbon compound and to produce a regeneration fluid having a concentration of the fluorocarbon compound and directing the regeneration fluid to an electro-oxidation system. The method also includes applying a current to the electro-oxidation system to oxidize the fluorocarbon compound within the regeneration fluid and measuring a quantity of fluorides in the regeneration fluid to determine the progress of the removal of the fluorocarbon compound from the regeneration fluid.
First claim
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What is claimed is: 1. A method of destroying a fluorocarbon compound, the method comprising: regenerating an adsorbent to remove the fluorocarbon compound and to produce a regeneration fluid having a concentration of the fluorocarbon compound; directing the regeneration fluid to an electro-oxidation system; applying a current to the electro-oxidation system to oxidize the fluorocarbon compound within the regeneration fluid; and measuring a quantity of fluorides in the regeneration fluid to determine the progress of the removal of the fluorocarbon compound from the regeneration fluid; wherein the current has a current density of at least 5,000 A/m 2 . 2. The method of claim 1 , wherein the current density is at least 15,000 A/m 2 . 3. The method of claim 1 , further comprising measuring the total fluorocarbon input into the electro-oxidation system. 4. The method of claim 1 , wherein the adsorbent includes an ion-exchange resin. 5. The method of claim 1 , wherein the fluorocarbon compound includes per- and polyfluorinated alkyl substances (PFAS). 6. A method of destroying a fluorocarbon compound in a flow of water, the method composing: directing the flow of water into a tank containing an adsorbent; removing the fluorocarbon compound from the flow of water by facilitating the adsorption of the fluorocarbon compound with the adsorbent; periodically regenerating the adsorbent to allow for re-use of the adsorbent, the process of regeneration comprising, placing the adsorbent in a regeneration fluid, the fluorocarbon compound de-adsorbing from the adsorbent and collecting in the regeneration fluid; directing the regeneration fluid to an electro-oxidation system; applying a current to the electro-oxidation system to oxidize the fluorocarbon compound within the regeneration fluid; and measuring a quantity of fluorides in the regeneration fluid to determine the progress of the removal of the fluorocarbon compound from the regeneration fluid; wherein the current has a current density of at least 5,000 A/m 2 . 7. The method of claim 6 , wherein the current density is at least 15,000 A/m 2 . 8. The method of claim 6 , further comprising measuring the total fluorocarbon input into the electro-oxidation system. 9. The method of claim 6 , wherein the adsorbent includes an ion-exchange resin. 10. The method of claim 6 , wherein the fluorocarbon compound includes per- and polyfluorinated alkyl substances (PFAS).
Assignees
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Classifications
Regeneration of sorbents, filters · CPC title
containing halogen · CPC title
by ion-exchange (ion-exchange in general B01J) · CPC title
Processes using organic exchangers · CPC title
for anionic exchangers · CPC title
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Frequently asked questions
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- What does patent US12415738B2 cover?
- A method of destroying a fluorocarbon compound includes regenerating an adsorbent to remove the fluorocarbon compound and to produce a regeneration fluid having a concentration of the fluorocarbon compound and directing the regeneration fluid to an electro-oxidation system. The method also includes applying a current to the electro-oxidation system to oxidize the fluorocarbon compound within th…
- Who is the assignee on this patent?
- Lummus Technology Inc
- What technology area does this patent fall under?
- Primary CPC classification C02F1/4672. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 16 2025 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).