Method of separating mercury from an ore leachate
US-11359261-B2 · Jun 14, 2022 · US
Method of mercury decontamination
US9903006B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9903006-B2 |
| Application number | US-201414764439-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 27, 2014 |
| Priority date | Jan 29, 2013 |
| Publication date | Feb 27, 2018 |
| Grant date | Feb 27, 2018 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Methods of mercury decontamination are provided that include: contacting elemental mercury with a metal salt having a standard reduction potential sufficient to oxidize elemental mercury to an aqueous salt of mercury. In other aspects, methods of mercury decontamination are provided that include: contacting the metal surface with a solution comprising a metal salt having a standard reduction potential (E0) of greater than 0.85, thereby oxidizing a mercury contaminant to a soluble mercury salt.
First claim
Opening claim text (preview).
What is claimed: 1. A method of mercury decontamination comprising: obtaining an aqueous solution comprising an aqueous salt of mercury by adding a nitrate salt to elemental mercury on a contaminated surface or in a contaminated material, and contacting the elemental mercury with one or more crystal habit modifiers selected from a group consisting of glycols and polyvinyl pyrrolidone, and recovering the aqueous solution from the contaminated surface or the contaminated material. 2. The method of claim 1 , wherein the nitrate salt has a standard reduction potential of greater than 0.85. 3. The method of claim 1 , wherein the nitrate salt comprises one or more salts selected from a group consisting of salts of silver, gold, and platinum. 4. The method of claim 1 , further comprising recovering a solid metal corresponding to the cation of the nitrate salt. 5. The method of claim 1 , further comprising contacting the aqueous salt of mercury with a precipitating agent to produce a solid mercury-based mineral. 6. The method of claim 5 , wherein the precipitating agent is one or more selected from sulfides and elemental sulfur. 7. The method of claim 1 , further comprising contacting the aqueous salt of mercury with a reducing agent having a standard reduction potential of less than 0.85. 8. The method of claim 7 , wherein the reducing agent is one or more metals selected from a group consisting of copper, aluminum, and iron. 9. The method of claim 8 , further comprising recovering elemental mercury. 10. The method of claim 1 , wherein the aqueous salt of mercury is mercurous nitrate.
Assignees
Inventors
Classifications
by oxidation; by combustion · CPC title
Nitrates; Nitrites · CPC title
containing heavy metals, in the bonded or free state · CPC title
Compounds of mercury · CPC title
- C22B43/00Primary
Obtaining mercury · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9903006B2 cover?
- Methods of mercury decontamination are provided that include: contacting elemental mercury with a metal salt having a standard reduction potential sufficient to oxidize elemental mercury to an aqueous salt of mercury. In other aspects, methods of mercury decontamination are provided that include: contacting the metal surface with a solution comprising a metal salt having a standard reduction po…
- Who is the assignee on this patent?
- Oilfield Mineral Solutions Ltd, M I Drilling Fluids Uk Ltd
- What technology area does this patent fall under?
- Primary CPC classification C22B43/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 27 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).