Sanitizing Device and Associated Method Using Electrochemically Produced Sanitizing Agents

• US 20070141434A1
• Filed: 02/05/2007
• Published: 06/21/2007
• Est. Priority Date: 06/26/2000
• Status: Abandoned Application

• Current Assignee: Ceramatec, Inc.
• Original Assignee: Ceramatec, Inc.
• Inventors: Balagopal, Shekar, Pendelton, Justin, Joshi, Ashok
• Application Number:
  US11/671,419
• Publication Number:
  US 20070141434A1
• Time in Patent Office: Days
• US Class Current: 204/243.100
• CPC Class Codes: A61L 2/035 Electrolysis
• CPC Class Codes: A61L 2/14 Plasma, i.e. ionised gases
• CPC Class Codes: A61L 2/16 using chemical substances
• CPC Class Codes: A61L 2/23 Solid substances, e.g. granules, powders, blocks, tablets
• CPC Class Codes: A61L 9/12 Apparatus, e.g. holders, therefor
• CPC Class Codes: C02F 1/001 Processes for the treatment of water whereby the filtration technique is of importance C02F1/44 takes precedence; construction of filters in general B01D24/00 - B01D41/00
• CPC Class Codes: C02F 1/4608 using electrical discharges
• CPC Class Codes: C02F 1/46104 Devices therefor; Their operating or servicing
• CPC Class Codes: C02F 2001/46133 characterised by the material
• CPC Class Codes: C02F 2303/04 Disinfection

Abstract

A sanitizing device includes a sanitizing component for sanitizing a surface, liquid, gas, and/or associated surrounding environment. The sanitizing component may be an electrochemical cell having an anode, a cathode, and an electrolyte component, that works in cooperation with a power source and a precursor material. The electrochemical cell, power source and precursor material may be supported by a housing. Upon application of potential across the electrodes of the electrochemical cell, a sanitizer is formed from the precursor material. The housing contains an outlet for releasing the sanitizer.

Claims

1. A sanitizing device comprising:

a ion conducting electrolyte component having ionic conductivity greater than approximately 10<sup>−

10</sup> (ohm cm)<sup>−

1</sup> at ambient temperatures;

an anode in operable communication with the electrolyte component;

a cathode in operable communication with the electrolyte component;

at least one precursor material in operable communication with one or more of the anode and cathode;

a power source operably connected to the anode and cathode, such that upon application of electric potential to the anode and cathode by the power source, a sanitizer will be formed from the precursor; and

a housing for containing at least the anode, the cathode, and the electrolyte component, the housing having an outlet through which the sanitizer can exit the housing.

2. The device of claim 1, wherein the electrolyte component comprises a solid polymer.

3. The device of claim 2, wherein the solid polymer comprises one of the group consisting of a cation conducting polymer membrane, an anion conducting polymer membrane, a sulfonated tetrafluorethylene membrane, and combinations thereof.

4. The device of claim 1, wherein the electrolyte component comprises a solid inorganic material.

5. The device of claim 4, wherein the solid inorganic material comprises NaSICON, beta alumina, NaSICON substituted with Ag ions, NaSICON substituted with Cu ions, NaSICON substituted with Li ions, NaSICON substituted with Rb ions, NaSICON substituted with Na ions, NaSICON substituted with H ions, NaSICON substituted with Mg ions, beta alumina substituted with Ag ions, beta alumina substituted with Cu ions, beta alumina substituted with Li ions, beta alumina substituted with Rb ions, beta alumina substituted with Na ions, beta alumina substituted with H ions, beta alumina substituted with Mg ions, and combinations thereof.

6. The device of claim 1, wherein the electrolyte comprises the precursor material.

7. The device of claim 6, wherein the precursor material comprises one of the group consisting of silver halides, silver chalcogenides, silver phosphates, silver tungstates, silver zirconates, silver aluminates, silver titanates, and combinations thereof.

8. The device of claim 1, wherein the anode comprises the precursor material.

9. The device of claim 8, wherein the precursor material comprises one of the group consisting of silver halides, silver chalcogenides, silver phosphates, silver tungstates, silver zirconates, silver aluminates, silver titanates, and combinations thereof.

10. The device of claim 1, wherein the cathode comprises the precursor material.

11. The device of claim 10, wherein the precursor material comprises one of the group consisting of silver halides, silver chalcogenides, silver phosphates, silver tungstates, silver zirconates, silver aluminates, silver titanates, and combinations thereof.

12. The device of claim 1, further comprising a reservoir in communication with one or more of the cathode and anode, said reservoir comprising the precursor material.

13. The device of claim 12, wherein the precursor material comprises a halide or halogen compound.

14. The device of claim 13, wherein the precursor material comprises NaCl.

15. The device of claim 12, wherein the precursor material is an aqueous solution.

16. The device of claim 15, wherein the aqueous solution has a pH of less than about 9.

17. The device of claim 15, wherein the aqueous solution has a pH of greater than about 3.

18. The device of claim 1, wherein the electrolyte component, anode, and cathode are all in a solid state.

19. The device of claim 1, wherein the sanitizer comprises a silver compound.

20. The device of claim 1, wherein the sanitizer comprises an iodine compound.

21. The device of claim 1, wherein the sanitizer comprises a halide or halogen compound.

22. The device of claim 21, wherein the sanitizer comprises hypochlorous acid.

23. The device of claim 1, wherein in the anode comprises an element having an atomic weight of less than about 50.

24. The device of claim 23, wherein the anode comprises one of the group consisting of titanium, carbon, and combinations thereof.

25. The device of claim 23, wherein the anode is substantially porous and is infiltrated with the electrolyte component.

26. The device of claim 1, wherein the cathode comprises an element having an atomic weight of less than about 50.

27. The device of claim 26, wherein the cathode comprises one of the group consisting of titanium, carbon, and combinations thereof.

28. The device of claim 26, wherein the cathode is substantially porous and is infiltrated with electrolyte component.

29. The device of claim 1, wherein the anode does not include an element having an atomic weight of greater than about 50.

30. The device of claim 1, wherein the cathode does not include an element having an atomic weight of greater than about 50.

31. A sanitizing device comprising:

a solid state ion conducting electrolyte component having ionic conductivity greater than approximately 10<sup>−

10</sup> (ohm cm)<sup>−

1</sup> at ambient temperatures, the electrolyte component comprising a precursor material;

a solid state anode in operable communication with the electrolyte component;

a solid state cathode in operable communication with the electrolyte component;

a power source operably connected to the anode and cathode, such that upon application of electric potential to the anode and cathode by the power source, a sanitizer will be formed from the precursor; and

a housing for containing at least the anode, the cathode, and the electrolyte component, the housing having an outlet through which the sanitizer can exit the housing.

32. The device of claim 31, wherein the electrolyte component comprises a solid polymer.

33. The device of claim 32, wherein the solid polymer comprises one of the group consisting of a cation conducting polymer membrane, an anion conducting polymer membrane, a sulfonated tetrafluorethylene membrane, and combinations thereof.

34. The device of claim 31, wherein the electrolyte component comprises a solid inorganic material.

35. The device of claim 34, wherein the solid inorganic material comprises NaSICON, beta alumina, NaSICON substituted with Ag ions, NaSICON substituted with Cu ions, NaSICON substituted with Li ions, NaSICON substituted with Rb ions, NaSICON substituted with Na ions, NaSICON substituted with H ions, NaSICON substituted with Mg ions, beta alumina substituted with Ag ions, beta alumina substituted with Cu ions, beta alumina substituted with Li ions, beta alumina substituted with Rb ions, beta alumina substituted with Na ions, beta alumina substituted with H ions, beta alumina substituted with Mg ions, and combinations thereof.

36. The device of claim 31, wherein the precursor material comprises one of the group consisting of silver halides, silver chalcogenides, silver phosphates, silver tungstates, silver zirconates, silver aluminates, silver titanates, and combinations thereof.

37. The device of claim 36, wherein the sanitizer comprises a silver compound.

38. The device of claim 31, wherein in the anode comprises an element having an atomic weight of less than about 50.

39. The device of claim 31, wherein the cathode comprises an element having an atomic weight of less than about 50.

40. A sanitizing device comprising:

a ion conducting electrolyte component having ionic conductivity greater than approximately 10<sup>−

10</sup> (ohm cm)<sup>−

1</sup> at ambient temperatures;

an anode in operable communication with the electrolyte component;

a cathode in operable communication with the electrolyte component;

a first reservoir in operable communication with the electrolyte component, the first reservoir comprising a first precursor material;

a power source operably connected to the anode and cathode, such that upon application of electric potential to the anode and cathode by the power source, a sanitizer will be formed from the precursor; and

a housing for containing at least the anode, the cathode, and the electrolyte component, the housing having an outlet through which the sanitizer can exit the housing.

41. The device of claim 40, wherein the electrolyte component comprises a solid polymer.

42. The device of claim 41, wherein the solid polymer comprises one of the group consisting of a cation conducting polymer membrane, an anion conducting polymer membrane, a sulfonated tetrafluorethylene membrane, and combinations thereof.

43. The device of claim 40, wherein the electrolyte component comprises a solid inorganic material.

44. The device of claim 43, wherein the solid inorganic material comprises NaSICON, beta alumina, NaSICON substituted with Ag ions, NaSICON substituted with Cu ions, NaSICON substituted with Li ions, NaSICON substituted with Rb ions, NaSICON substituted with Na ions, NaSICON substituted with H ions, NaSICON substituted with Mg ions, beta alumina substituted with Ag ions, beta alumina substituted with Cu ions, beta alumina substituted with Li ions, beta alumina substituted with Rb ions, beta alumina substituted with Na ions, beta alumina substituted with H ions, beta alumina substituted with Mg ions, and combinations thereof.

45. The device of claim 41, wherein the first precursor material comprises a halogen or halide compound.

46. The device of claim 45, wherein the first precursor material comprises NaCl.

47. The device of claim 40, further comprising a second reservoir comprising a second precursor.

48. The device of claim 47, wherein the second precursor material is an aqueous solution.

49. The device of claim 48, wherein the aqueous solution has a pH of less than about 9.

50. The device of claim 49, wherein the aqueous solution has a pH of greater than about 3.

51. The device of claim 40, wherein the sanitizer comprises a halogen or halide compound.

52. The device of claim 51, wherein the sanitizer comprises hypochlorous acid.

53. The device of claim 40, wherein in the anode comprises an element having an atomic weight of less than about 50.

54. The device of claim 40, wherein the cathode comprises an element having an atomic weight of less than about 50.

55. A sanitizing device comprising:

a ion conducting electrolyte component having ionic conductivity greater than approximately 10<sup>−

10</sup> (ohm cm)<sup>−

1</sup> at ambient temperatures, the electrolyte component comprising NaSICON;

a porous titanium anode in operable communication with the electrolyte component;

a porous titanium cathode in operable communication with the electrolyte component;

a first reservoir in operable communication with the electrolyte component, the first reservoir comprising a chloride compound;

a second reservoir in operable communication with the electrolyte component, the second reservoir comprising an aqueous solution having a pH of between about 3 and about 9;

a power source operably connected to the anode and cathode, such that upon application of electric potential to the anode and cathode by the power source, hypochlorous acid will be formed from the first and second precursors; and

a housing for containing at least the anode, the cathode, and the electrolyte component, the housing having an outlet through which the hypochlorous acid can exit the housing.

56. A sanitizing device comprising:

a solid NaSICON electrolyte component;

an anode in operable communication with the electrolyte component;

a cathode in operable communication with the electrolyte component;

at least one precursor material in operable communication with one or more of the anode and cathode;

a power source operably connected to the anode and cathode, such that upon application of electric potential to the anode and cathode by the power source, a sanitizer will be formed from the precursor; and

a housing operably connected to the anode, the cathode, and the electrolyte component, the housing having an outlet through which the sanitizer can exit the housing.