IP Library › Granted Patent US 6,949,219
Granted Patent B1
US 6,949,219 · App. 10/319,322 · Granted Sep 27, 2005

Method for disinfection of activated carbon through contact with peroxide containing materials

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Quick Facts
Patent No.
US 6,949,219
App. No.
10/319,322
Granted
Sep 27, 2005
Kind
B1
Abstract

A process is provided for the disinfection of activated carbon. The process comprises contacting contaminated carbon with peroxide-containing materials for a sufficient amount of time using enough peroxide to provide effective disinfection in a process that is relatively non-hazardous, convenient, and carbon-friendly.

Claims (24)

1. A process for the disinfection of an activated carbon comprising contacting an activated carbon contaminated with microorganisms with a water compatible peroxide-containing material, wherein said peroxide-containing material is peroxide or possesses peroxyl (O—O—) chemical functionality.

2. A process as set forth in claim 1 , wherein said peroxide-containing material comprises one of the group consisting of hydrogen peroxide, persalt, peracid and any combination thereof and wherein said peroxide-containing material is part of a non-aqueous solution.

3. A process as set forth in claim 1 , wherein said peroxide-containing material is part of an aqueous solution or a non-aqueous solution.

4. A process as set forth in claim 3 , wherein the concentration of said peroxide-containing material in solution is less than 250 mg/L.

5. A process as set forth in claim 3 , wherein the concentration of said peroxide-containing material in solution is less than 1000 mg/L.

6. A process as set forth in claim 3 , wherein the concentration of said peroxide-containing material in solution is produced from higher concentration peroxide solutions.

7. A process as set forth in claim 3 , wherein said peroxide-containing material in solution is produced from at least one higher concentration peroxide-containing solution, wherein said higher concentration is at most 50% in peroxide.

8. A process as set forth in claim 3 , wherein said peroxide-containing material is hydrogen peroxide, and wherein the hydrogen peroxide is in a range of about 5 to about 10,000 ppm.

9. A process as set forth in claim 3 , wherein said peroxide-containing material is hydrogen peroxide, and wherein the hydrogen peroxide contacts said activated carbon in a static disinfection process for 24 hours.

10. A process as set forth in claim 3 , wherein said peroxide-containing material is hydrogen peroxide, and wherein the hydrogen peroxide contacts said activated carbon in a dynamic disinfection process for at least 5 minutes.

11. A process as set forth in claim 1 , wherein said peroxide-containing material is generated in situ through a chemical reaction.

12. A process as set forth in claim 11 , wherein the concentration of said peroxide-containing material in solution is less than 250 mg/L.

13. A process as set forth in claim 11 , wherein the concentration of said peroxide-containing material in solution is less than 1000 mg/L.

14. A process as set forth in claim 11 , wherein the concentration of said peroxide-containing material in solution is produced from higher concentration peroxide solutions.

15. A process as set forth in claim 11 , wherein said peroxide-containing material in solution is produced from at least one higher concentration peroxide-containing solution, wherein said higher concentration is at most 50% in peroxide.

16. A process as set forth in claim 11 , wherein said peroxide-containing material is hydrogen peroxide, and wherein the hydrogen peroxide is in a range of about 5 to about 10,000 ppm.

17. A process as set forth in claim 11 , wherein said peroxide-containing material is hydrogen peroxide, and wherein the hydrogen peroxide contacts said activated carbon in a static disinfection process for 24 hours.

18. A process as set forth in claim 11 , wherein said peroxide-containing material is hydrogen peroxide, and wherein the hydrogen peroxide contacts said activated carbon in a dynamic disinfection process for at least 5 minutes.

19. A process as set forth in claim 1 , wherein said process for disinfection is dynamic or static.

20. A process as set forth in claim 1 , wherein said activated carbon is granular, pelleted, shaped or powdered.

21. A process as set forth in claim 1 , wherein said activated carbon is formed, bonded or otherwise incorporated into a unitized body for use as a filtration media.

22. A process as set forth in claim 1 , wherein said activated carbon is a fiber, fabric or cloth.

23. A process as set forth in claim 1 , wherein said activated carbon is derived from any carbon-containing material.

24. A process as set forth in claim 1 , wherein said peroxide-containing material is stabilized or non-stabilized against autodecomposition.