Method of recycling chitosan and graphene oxide compound

• US 10,414,659 B2
• Filed: 08/08/2017
• Issued: 09/17/2019
• Est. Priority Date: 08/08/2017
• Status: Active Grant

• Current Assignee: United States Of America As Represented By The Secretary Of The Army (Government of the United States of America)
• Original Assignee: United States Of America As Represented By The Secretary Of The Army (Government of the United States of America)
• Inventors: Medina, Victor F, Mattei-Sosa, Jose, Griggs, Christopher S
• Primary Examiner(s): McCracken, Daniel C.
• Application Number:
  US15/672,241
• Publication Number:
  US 20190047869A1
• Time in Patent Office: 770 Days
• Field of Search: 423448
• CPC Class Codes: B01D 63/10 Spiral-wound membrane modules
• CPC Class Codes: B01D 69/10 Supported membranes; Membrane supports
• CPC Class Codes: B01D 71/0211 Graphene or derivates thereof
• CPC Class Codes: B01D 71/024 Oxides
• CPC Class Codes: B01D 71/74 Natural macromolecular material or derivatives thereof B01D71/08, B01D71/24 take precedence
• CPC Class Codes: C01B 32/198 Graphene oxide
• CPC Class Codes: C04B 14/022 Carbon
• CPC Class Codes: C04B 18/24 Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper , cork
• CPC Class Codes: C08B 37/003 Chitin, i.e. 2-acetamido-2-deoxy-(beta-1,4)-D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan, i.e. deacetylated product of chitin or (beta-1,4)-D-glucosamine; Derivatives thereof
• CPC Class Codes: C09D 105/08 Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
• CPC Class Codes: C09D 5/14 Paints containing biocides, e.g. fungicides, insecticides or pesticides C09D5/16 takes precedence

Abstract

A method of creating storing and using recycled graphene oxide materials to create highly resilient objects having desirable qualities of graphene.

Claims

1. A method of producing a quantity of a graphene oxide compound from a graphene oxide object comprised of a chitosan graphene oxide compound comprising the steps of:

maximizing solution to solid contact;

immersing said graphene oxide object in an acidic solution;

creating a homogeneous solution as said graphene oxide object dissolves; and

producing a stored graphene oxide compound.

2. The method of claim 1 wherein the step of producing a stored graphene oxide compound further includes the step of evaporating said graphene oxide solution to form a solid.

3. The method of claim 1 wherein the step of producing a stored graphene oxide compound further includes the step of pulverizing said solid to form a powder.

4. The method of claim 1 which further includes the step of storing said graphene oxide compound as a solution.

5. The method of claim 1 wherein the step of producing a stored graphene oxide compound further includes the step of combining a recycled quantity of graphene oxide with a second compound to improve the qualities of said second compound.

6. The method of claim 5 wherein said second compound is concrete.

7. The method of claim 1 wherein said step of maximizing solution to solid contact includes reducing the graphene oxide object into two physical parts.

8. The method of claim 7 which further incudes the step of applying a mechanical process to said graphene oxide object, wherein said mechanical process is selected from a group consisting of punching, shredding and grounding.

9. The method of claim 1, wherein said chitosan graphene oxide compound has a ratio of between two and seven parts of chitosan to each part of graphene.

10. The method of claim 1, wherein said chitosan graphene oxide compound has a ratio of five parts of chitosan to each part of graphene.

11. The method of claim 1 wherein said, graphene oxide object is filter.

12. The method of claim 1 which further includes removing one or more layers of material from said graphene oxide object.

13. The method of claim 1 wherein said solution is an acetic acid solution consisting of 8.3mL of 99% glacial acid per liter of water.