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US-9707328-B2 · Jul 18, 2017 · US
Apatite sequestration of selenium
US9440217B1 · US · B1
| Field | Value |
|---|---|
| Publication number | US-9440217-B1 |
| Application number | US-201313890022-A |
| Country | US |
| Kind code | B1 |
| Filing date | May 8, 2013 |
| Priority date | May 8, 2013 |
| Publication date | Sep 13, 2016 |
| Grant date | Sep 13, 2016 |
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- Title
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- Abstract
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Abstract
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A method for sequestering selenium is disclosed. The method includes contacting selenium with a stannous modified apatite under conditions whereby the selenium is absorbed by the apatite.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for sequestering selenium, comprising: introducing a stannous modified apatite into a material, wherein Sn is present in an amount of between 0.1 and 0.5 moles for every mole of apatite; contacting the selenium with the stannous modified apatite under conditions by which the selenium is absorbed by the stannous modified apatite. 2. The method of claim 1 , wherein the conditions comprise a reducing environment. 3. The method of claim 1 , wherein the stannous modified apatite is introduced into the material by adding apatite particles to the material. 4. The method of claim 1 , wherein the stannous modified apatite is introduced into the material by introducing a solution comprising apatite forming constituents into the material. 5. The method of claim 4 , wherein the solution further comprises tin ions. 6. The method of claim 4 , wherein the solution is injected into the material. 7. A method for removing selenium from a fluid, comprising: contacting the fluid with stannous modified apatite to absorb selenium into the stannous modified apatite, wherein Sn is present in an amount of between 0.1 and 0.5 moles for every mole of apatite. 8. The method of claim 7 , wherein the stannous modified apatite after absorption of selenium from the fluid is removed from the fluid. 9. The method of claim 7 , wherein the stannous modified apatite is formed in situ.
Assignees
Inventors
Classifications
containing phosphorus, e.g. phosphates, apatites, hydroxyapatites · CPC title
Compounds of O, S, Se, Te · CPC title
- B01J20/0292Primary
Phosphates of compounds other than those provided for in B01J20/048 · CPC title
Compounds of F, Cl, Br, I · CPC title
using inorganic sorbents · CPC title
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Frequently asked questions
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- What does patent US9440217B1 cover?
- A method for sequestering selenium is disclosed. The method includes contacting selenium with a stannous modified apatite under conditions whereby the selenium is absorbed by the apatite.
- Who is the assignee on this patent?
- Sandia Corp
- What technology area does this patent fall under?
- Primary CPC classification B01J20/0292. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 13 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).