System and methods for large scale copper extraction

Patent metadata

Field	Value
Publication number	US-11027320-B2
Application number	US-201816188846-A
Country	US
Kind code	B2
Filing date	Nov 13, 2018
Priority date	Nov 17, 2017
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A method for extracting an elemental metal from agricultural waste including collecting a sample of the waste and performing an electrochemical extraction on the waste to producing a metal precipitate and a byproduct. The method further including collecting the metal precipitate and byproduct produced via the electrochemical extraction for further reaction, recycling, sale, or reuse.

First claim

What is claimed is:

1. A system for extracting an elemental metal from a solution, the system comprising:
a basin operable to contain an antibacterial solution, wherein the basin comprises: a pump coupled with a valve and operable to pump the antibacterial solution from the basin to the one or more filtration tanks; an infrared sensor operable to monitor usage of the basin; and
a plurality of nozzles operable to clean the basin between uses;
one or more filtration tanks coupled with and operable to receive the antibacterial solution from the basin;
an electrolysis chamber coupled with the one or more filtration tanks; and
a storage tank for holding a material.

2. The system of claim 1 , further comprising a computing device coupled with each of the basin, the one or more filtration tanks, the electrolysis chamber and the storage tank.

3. The system of claim 2 , wherein the computing device further comprises a processor and a memory coupled with the processor and storing instructions thereon which, when executed by the processor, cause the processor to:
track a usage of the antibacterial solution in the basin, pump the antibacterial solution from the basin to the one or more filtration tanks, perform an electrochemical extraction on the antibacterial solution; and
produce a metal precipitate and a byproduct in the electrolysis chamber.

4. The system of claim 3 , wherein the instructions further cause the processor to:
extract the metal precipitate;
pump the byproduct into the storage tank; and
neutralize the byproduct.

5. The system of claim 4 , wherein the instructions further cause the processor to:
regenerate the antibacterial solution by introduce an oxidizing agent into the electrolysis chamber.

6. The system of claim 3 , wherein the instructions further cause the processor to pump the antibacterial solution from the basin to the one or more filtration tanks when the antibacterial solution in the basin has been used by 150 subjects.

7. The system of claim 1 , wherein the one or more filtration tanks further comprise a plurality of mesh baskets, each of the plurality of mesh baskets having a different size mesh.

8. The system of claim 1 , wherein the electrolysis chamber further comprises one or more cathodes, one or more anodes, and a power supply source.

9. A method for extracting at least one elemental metal from an antibacterial solution, the method comprising:
obtaining at least 100 liters of an antibacterial solution that has been used to treat at least 100 animals;
performing an electrochemical extraction on the antibacterial solution;
producing a metal precipitate and a byproduct; and
collecting the metal precipitate.

10. The method of claim 9 , wherein the sample of the antibacterial solution is from about 100 liters to about 1000 liters.

11. The method of claim 9 , wherein the antibacterial solution is selected from the group comprising a copper sulfate (CuSO 4 ) solution, a zinc chloride (ZnCl 2 ) solution, and a zinc sulfate (ZnSO 4 ) solution.

12. The method of claim 9 , wherein the antibacterial solution is the copper sulfate (CuSO 4 ) solution.

13. The method of claim 9 , wherein the metal precipitate is an elemental copper (Cu) and the byproduct is a sulfuric acid solution (H 2 SO 4 ).

14. The method of claim 13 , further comprising neutralizing the sulfuric acid solution (H 2 SO 4 ).

15. The method of claim 14 , wherein the neutralization step further comprises introducing a basic material into the sulfuric acid solution (H 2 SO 4 ), wherein the basic material is selected from the group comprising a sodium hydroxide (NaOH) solution and a calcium carbonate (CaCO 3 ).

16. The method of claim 15 , wherein the basic material is calcium carbonate (CaCO 3 ).

17. The method of claim 16 , further comprising converting the sulfuric acid solution (H 2 SO 4 ) to gypsum (CaSO 4 ⋅2H 2 O).

18. The method of claim 13 , further comprising:
replacing the copper (Cu) precipitate into the sulfuric acid solution (H 2 SO 4 );
introducing an oxidizing agent into the copper (Cu) and the sulfuric acid (H 2 SO 4 ); and
regenerating a fresh copper sulfate (CuSO 4 ).

19. The method of claim 18 , where in the oxidizing agent is hydrogen peroxide (H 2 O 2 ).

Assignees

• Univ Colorado State Res Found

Inventors

• Jalali Sam
• Engle Terry E

Classifications

• B09C1/00

  Reclamation of contaminated soil · CPC title

• B09C1/085 Primary

  electrochemically, e.g. by electrokinetics · CPC title

• A62D3/11

  Electrochemical processes, e.g. electrodialysis · CPC title