System and method for treatment of biomass products or residues and resulting composition

• US 10,023,778 B2
• Filed: 10/07/2015
• Issued: 07/17/2018
• Est. Priority Date: 03/12/2013
• Status: Active Grant

• Current Assignee: University of Louisiana at Lafayette (Louisiana Board of Regents)
• Original Assignee: University of Louisiana at Lafayette (Louisiana Board of Regents)
• Inventors: Chirdon, William
• Primary Examiner(s): Mayes, Melvin C.
• Assistant Examiner(s): Cohen, Stefanie J
• Application Number:
  US14/877,069
• Publication Number:
  US 20160024359A1
• Time in Patent Office: 1,014 Days
• CPC Class Codes: C09J 189/04 Products derived from waste materials, e.g. horn, hoof or hair

Abstract

A system and method for treatment of biomass products or residues to obtain valuable adhesives and composite materials is described herein. Some embodiments do not require purification of a biomass product or residue to produce an adhesive. Some embodiments comprise a treatment of post extraction algae residue configured to produce an adhesive. Use of post extraction algae residue adds value to alternative energy produced by extracting oil from algae.

Claims

1. A method for producing an adhesive from biomass products or residues, comprising the steps of:

a. obtaining a biomass;

b. extracting a component from said biomass, thereby generating a byproduct of said biomass;

c. grinding said byproduct of said biomass into a ground algae byproduct;

d. wetting said ground algae byproduct, creating a ground wetted algae byproduct; and

e. combining said ground wetted algae byproduct with a solution, said solution configured to denature proteins in said ground wetted ground algae byproduct, creating a ground wetted algae byproduct-solution mixture; and

f. mixing said byproduct-solution mixture to form an adhesive mixture.

2. The method of claim 1, further comprising a step of heating the adhesive mixture at a temperature condition between approximately 20°

C. and approximately 70°

C. for a reaction time of between greater than approximately 0 seconds and approximately 3 hours.

3. The method of claim 1, wherein said combining step further comprises altering the level of denaturation of proteins in said ground wetted algae byproduct-solution mixture by changing at least one of:

the temperature, the treatment time or the concentration of constituents of the solution.

4. The method of claim 1, further comprising a step of adding a preservative to said adhesive mixture.

5. The method of claim 1, further comprising a step of adding cross-linkers to said adhesive mixture.

6. The method of claim 5 wherein said cross linkers is chosen from a group comprising a formaldehyde donor, sulfur compound, inorganic complexing salt, dialdehyde starch, dimethylol urea, sodium formaldeyde bisulfite, hexamethylenetetramine, carbon disulfide, thiourea, ethylene trithiocarbonate, soluble salts of cobalt, chromium, and copper.

7. The method of claim 1 further comprising the step of removing insoluble solids from said adhesive mixture wherein said step of removing insoluble solids is chosen from a group comprising filtration or centrifugation.

8. The method of claim 1, wherein said biomass comprises algae and said component extracted from said biomass comprises algae oil.

9. A method of creating a composite comprising the steps of:

a. obtaining a biomass;

b. extracting oil from said biomass, thereby generating a byproduct of said biomass;

c. grinding said byproduct of said biomass into a ground algae byproduct;

d. wetting said ground algae byproduct, creating a ground wetted algae byproduct;

e. mixing said ground wetted algae byproduct with a solution, said solution configured to denature proteins in said ground wetted algae byproduct to form an adhesive mixture;

f. mixing said adhesive mixture with a composite material to form an adhesive-composite material mixture; and

g. hot pressing the adhesive-composite material mixture to form a composite;

h. clamping said composite to form a clamped composite at a pressure of at least 80 psi but no more than 120 psi; and

i. heating said clamped composite to 105 degrees Celsius for at least 20 hours but no more than 48 hours.

10. The method of claim 9, further comprising the step of combining a first composite with a second composite by performing said hot pressing step a first time to create said first composite and performing said hot pressing step a second time to create a second composite and adding additional adhesive mixture to one surface of said first composite, creating and then placing said second composite in contact with said additional adhesive mixture on said surface of said first composite.

11. The method of claim 9, further comprising the step of creating a layered composite by adding additional composite mixture to said composite and then hot pressing said composite together with said additional composite mixture.