Apparatus and method for electronic decomposition of water into aqueous free radicals and free electrons

• US 4,676,878 A
• Filed: 01/06/1986
• Issued: 06/30/1987
• Est. Priority Date: 01/06/1986
• Status: Expired due to Fees

• Current Assignee: Ephriam Chez
• Original Assignee: Ephriam Chez
• Inventors: Chez, Ephriam
• Primary Examiner(s): Andrews, R. L.
• Application Number:
  US06/816,313
• Time in Patent Office: 540 Days
• Field of Search: 204/275, 204/84, 204/278, 204/129, 204/130, 204/149, 204/228, 204/257, 204/258, 204/101, 204/243 M, 204/263, 204/240 R, 204/266, 204/291, 204/294, 204/292
• US Class Current: 205/334
• CPC Class Codes: B01J 19/087 employing electric or magnetic energy
• CPC Class Codes: C02F 1/4672 by electrooxydation
• CPC Class Codes: C02F 1/4676 by electroreduction
• CPC Class Codes: C02F 2101/16 Nitrogen compounds, e.g. ammonia

Abstract

An apparatus and method for the electronic decomposition of water into its component free radical parts and free electrons. In a cell containing an aqueous fluid, an electromotive force is applied to a positive charge storage core, insulated with semi-conductive material, and a conducting cathodic connector having a limited electrolysis bridge therebetween thereby inducing the formation of an aqueous condenser, the anodic section of which consists of the positive charge storage core insulated with the semi-conductive material. The formed aqueous condenser is subjected to overpotentials at which the dielectric breakdown of water occurs. The free radicals produced by such dielectric decomposition serve to treat most dissolved, suspended or precipitous substances in solution by oxidation/reduction reactions. The in-situ treatment process employs relatively low voltages and very low current intensities and is applicable in the treatment of various aqueous stock, such as raw sewage, without the use of chemical additives.

Claims

1. A method for electronically decomposing water into aqueous free radicals, comprising the steps of:

a. providing a cell having therein an aqueous fluid, an anodic charge means in said aqueous fluid and a cathodic connector means in said aqueous fluid, said anodic charge means having semi-conductive material in contact with said aqueous fluid and means for restrictive electrical continuity with said aqueous fluid;

b. applying an electromotive force to the anodic charge means and to the cathodic connector means to form electrically an aqueous condenser at said anodic charge means; and

,

c. subjecting the formed condenser to an electromotive force equal to or greater than 12.6 volts whereby water is decomposed into aqueous free radicals.

2. The method of claim 1 wherein the aqueous fluid comprises a solution or suspension of substances in water for reaction with the aqueous free radicals formed.

3. The method of claim 2 wherein the aqueous fluid comprises waste water.

4. The method of claim 1 wherein said cathodic connector means forms a wet electrical connection with the aqueous fluid and including the step of connecting the cathodic connector means to the negative terminal of a direct current electrical power supply.

5. The method of claim 1 wherein said electrical continuity means comprises a wet electrical connection between said anodic charge means and the aqueous fluid, and including the step of connecting said anodic charge means to the positive terminal of a direct current electrical power supply.

35. The method of claim 1 wherein the aqueous fluid comprises pure water for forming an aqueous solution charged with free radicals.

6. An apparatus for electronically decomposing water into aqueous free radicals, comprising:

a. a cell adapted to have an aqueous fluid therein;

b. an anodic charge means in said cell positioned to be in said aqueous fluid, said anodic charge means having semi-conductive material for contact with said aqueous fluid and having means for restrictive electrical continuity with said aqueous fluid;

c. a conductive cathodic connector means in said cell positioned to be in said aqueous fluid; and

,

d. means for applying an electromotive force between said anodic charge means and said cathodic connector means for forming electrically an aqueous condenser at said anodic charge means, said electromotive force means being adapted to apply an electromotive force equal to or greater than 12.6 volts to said formed condenser whereby water is decomposed into aqueous free radicals.

7. The apparatus of claim 6 and including means for directing a moving stream of aqueous fluid through said cell.

8. The apparatus of claim 6 wherein said aqueous fluid comprises a solution or suspension of substances in water for reaction with the aqueous free radicals formed.

9. The apparatus of claim 6 wherein said cathodic connector means is positioned to be in said aqueous fluid for forming a wet connection with said aqueous fluid and said cathodic connector means is connected to the negative terminal of said electromotive force means.

10. The apparatus of claim 6 wherein said electrical continuity means comprises means for a wet electrical connection between said anodic charge means and said aqueous fluid and said anodic charge means is connected to the positive terminal of said electromotive force means.

11. The apparatus of claim 6 wherein said electrical continuity means comprises an uninsulated conducting core adapted to be in direct contact with said aqueous fluid, and said semi-conductive material comprises a covering comprising semi-conductive material on said core.

12. The apparatus of claim 11 wherein said core comprises an electrochemically passive material having a high electrical resistance.

13. The apparatus of claim 12 wherein said electrochemically passive material having a high electrical resistance comprises carbon.

14. The apparatus of claim 11 wherein said covering comprises a loose bed of semi-conductive granules.

15. The apparatus of claim 11 wherein said covering comprises a porous matrix of bound semi-conductive granules.

16. The apparatus of claim 6 wherein said anodic charge means includes an electrically conductive core and said semi-conductive material comprises an insulating coating comprising semi-conductive material on said core, said coating isolating said core from direct contact with said aqueous fluid, and said electrical continuity means comprises a means for providing an electrical bias in said semi-conductive coating between said core and said aqueous fluid.

17. The apparatus of claim 16 wherein said core comprises metal.

18. The apparatus of claim 16 wherein said coating comprises a matrix of bound semi-conductive material.

19. The apparatus of claim 16 wherein said coating comprises a developed semi-conductive chemically bound surface oxide.

20. The apparatus of claim 16 wherein said coating has thereon a covering comprising a loose bed of semi-conductive granules.

21. The apparatus of claim 16 wherein said coating has thereon a covering comprising a porous matrix of bound semi-conductive granules.

22. The apparatus of claim 11 wherein said semi-conductive material comprises a p-type semi-conductive material having an electrical energy gap greater than 1.23 eV and less than 12.6 eV.

23. The apparatus of claim 16 wherein said insulating semi-conductive coating comprises p-type semi-conductive material having an electrical energy gap greater than 1.23 eV and less than 12.6 eV, and said electrical biasing means comprises n-type semi-conductive material.

24. The apparatus of claim 20 wherein said semi-conductive granules comprise p-type semi-conductive material having an electrical energy gap greater than 1.23 eV and less than 12.6 eV.

25. The apparatus of claim 21 wherein said semi-conductive granules comprise p-type semi-conductive material having an electrical energy gap greater than 1.23 eV and less than 12.6 eV.

26. The apparatus of claim 16 wherein said insulating semi-conductive coating comprises p-type semi-conductive material having an electrical energy gap greater than 1.23 eV and less than 12.6 eV and said electrical biasing means comprises p-type semi-conductive material having an electrical energy gap less than 1.23 eV.

27. The apparatus of claim 16 wherein said insulating semi-conductive coating comprises p-type semi-conductive material having an electrical energy gap greater than 1.23 eV and less than 12.6 eV and said electrical biasing means comprises conducting material having a high electrical resistance.

28. The apparatus of claim 16 wherein said insulating semi-conductive coating comprises p-type semi-conductive material having an electrical energy gap greater than 1.23 eV and less than 12.6 eV and said electrical biasing means comprises pores in said coating for permitting restricted conductivity.

29. The apparatus of claim 22 wherein said semi-conductive material comprises silicon dioxide.

30. The apparatus of claim 23 wherein said semi-conductive material comprises silicon dioxide.

31. The apparatus of claim 24 wherein said semi-conductive material comprises silicon dioxide.

32. The apparatus of claim 6 wherein said cathodic connector means comprises metal.

33. The apparatus of claim 6 wherein said cathodic connector means comprises a conductive non-metal.

34. The apparatus of claim 6 wherein said cathodic connector means comprises a conductive core having a protective semi-conductive coating thereon adapted to provide a total electrical conductivity greater than that required by said anodic charge means.

36. The apparatus of claim 6 wherein said aqueous fluid comprises pure water for forming an aqueous solution charged with free radicals.