Method for reducing contamination

• US 7,928,277 B1
• Filed: 08/24/2007
• Issued: 04/19/2011
• Est. Priority Date: 02/11/2002
• Status: Expired due to Term

• Current Assignee: Streamline Innovations, Inc.
• Original Assignee: Henry Wilmore Jr. Cox
• Inventors: Cox, Henry Wilmore Jr.
• Primary Examiner(s): JOHNSON, EDWARD M
• Application Number:
  US11/895,411
• Time in Patent Office: 1,334 Days
• Field of Search: 252/182.11, 252/184, 252/182.12, 252/182.3, 252/183.13, 252/183.11, 588/320, 588/405
• US Class Current: 588/320
• CPC Class Codes: A62D 2101/02 Chemical warfare substances, e.g. cholinesterase inhibitors
• CPC Class Codes: A62D 2101/20 Organic substances
• CPC Class Codes: A62D 2101/22 containing halogen
• CPC Class Codes: A62D 2101/28 containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen
• CPC Class Codes: A62D 3/38 by oxidation; by combustion
• CPC Class Codes: B01D 53/52 Hydrogen sulfide
• CPC Class Codes: B09C 1/08 chemically

Abstract

Exemplary compositions, methods, and systems are disclosed that can be useful for reducing a concentration of a contaminant associated with a medium, which can be any substance or material, such as soil, water, air, and/or fluid. In one exemplary method, the medium is treated with Fe-MDGA and an oxidizing agent in amounts effective to oxidize at least a portion of the contaminant. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.

Claims

1. An oxidation process comprising:

contacting an oxidizable composition of matter with a reaction product of active Fe-MGDA and an oxidizing agent, said active Fe-MGDA having an iron to MGDA molar ratio of approximately 3;

1.

2. A method comprising:

producing active Fe-MGDA by contacting a source of ferric ions with MGDA, said active Fe-MGDA having an iron to MGDA molar ratio of approximately 3;

1.

3. The method of claim 2, wherein the source of ferric ions is a ferric salt.

4. The method of claim 2, further comprising:

combining the active Fe-MGDA with an oxidizing agent.

5. The method of claim 2, further comprising:

combining the active Fe-MGDA with a peroxide.

6. The method of claim 2, further comprising:

combining the active Fe-MGDA with a persulphate.

7. The method of claim 2, further comprising:

combining the active Fe-MGDA with ozone.

8. The method of claim 2, further comprising:

combining the active Fe-MGDA with a permanganate.

9. The method of claim 2, further comprising:

combining the active Fe-MGDA with an oxidizing agent; and

applying a reaction product of said combining to a medium containing a medium-contaminating compound.

10. The method of claim 2, further comprising:

combining the active Fe-MGDA with an oxidizing agent; and

producing a free radical.

11. The method of claim 2, further comprising:

combining the active Fe-MGDA with an oxidizing agent; and

producing a hydroxyl free radical.

12. The method of claim 2, further comprising:

oxidizing a medium-contaminating compound via radicals generated from a reaction involving the active Fe-MGDA.

13. The method of claim 2, further comprising:

oxidizing hydrogen sulfide via radicals generated from a reaction involving the active Fe-MGDA.

14. The method of claim 2, further comprising:

oxidizing an organic compound having at least one aromatic functional group via radicals generated from a reaction involving the active Fe-MGDA.