Bio-derived composition for dust control

Patent metadata

Field	Value
Publication number	US-10669463-B2
Application number	US-201816051009-A
Country	US
Kind code	B2
Filing date	Jul 31, 2018
Priority date	Sep 30, 2015
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

Bio-derived glycerides formed from a reaction between waste glycerol and biodegradable or bio-derived fatty acid esters such as crude biodiesel or soybean oil triglycerides are useful as dust suppressants, binders, and stabilizing agents.

First claim

What is claimed is:

1. A composition comprising a biomaterial comprising a mixture of bio-derived glycerides, and asphalt and/or recycled asphalt, wherein the composition is formulated for use as an asphalt rejuvenator or a dust control agent.

2. The composition of claim 1 , wherein the bio-derived glycerides comprise at least one glyceride selected from the group consisting of a monoglyceride, a diglyceride, and a triglyceride.

3. The composition of claim 2 further comprising glycerol, and wherein the bio-derived glycerides comprise at least one monoglyceride, at least one diglyceride, and at least one triglyceride.

4. The composition of claim 3 , wherein the biomaterial comprises heterogeneous bio-derived glycerides.

5. The composition of claim 1 , wherein the bio-derived glyceride is produced from a reaction between glycerol and a biodegradable or bio-derived fatty acid ester.

6. The composition of claim 5 , wherein the glycerol is obtained from an organic waste stream.

7. The composition of claim 5 , wherein the biodegradable or bio-derived fatty acid ester comprises a plant oil, an animal fat, or a fatty acid methyl ester (FAME).

8. The composition of claim 7 , wherein the plant oil comprises soybean oil.

9. The composition of claim 7 , wherein the fatty acid methyl ester comprises biodiesel.

10. The composition of claim 1 , further comprising at least one additive selected from the group consisting of a dust control agent, a cross-linking agent, a drying agent, a hygroscopic agent, a stabilizing agent, and a defoaming agent.

11. A method for making a biomaterial, the method comprising reacting glycerol and a biodegradable or bio-derived fatty acid ester under conditions to produce a biomaterial comprising at least one monoglyceride, at least one diglyceride, and at least one triglyceride.

12. The method of claim 11 , wherein the glycerol comprises crude glycerol from an organic waste stream.

13. The method of claim 11 , wherein the biodegradable or bio-derived fatty acid ester comprises at least one of soybean oil or biodiesel.

14. The method of claim 13 wherein the biodiesel is crude biodiesel.

15. A method for rejuvenating asphalt or controlling dust on a road or soil surface comprising applying the composition of claim 1 to the road or soil surface.

16. The method of claim 15 , wherein the composition further comprises at least one additive selected from the group consisting of a dust control agent, a cross-linking agent, a drying agent, a hygroscopic agent, a stabilizing agent, and a defoaming agent.

17. The method of claim 15 , wherein the composition comprises an aqueous composition, and wherein the biomaterial is dissolved, suspended or emulsified in the aqueous composition.

18. The method of claim 15 , further comprising applying a cross-linking agent or drying agent to the road surface after application of the biomaterial.

19. A road construction material comprising asphalt and/or recycled asphalt and a biomaterial comprising a mixture of bio-derived glycerides.

20. A method for making the road construction material of claim 19 , comprising blending the asphalt or recycled asphalt and the biomaterial.

21. The method of claim 20 , wherein the biomaterial is emulsified in water.

22. The method of claim 20 , wherein the biomaterial is anhydrous.

23. A method for making a roadbed or road surface, comprising forming the roadbed or road surface from the material of claim 19 .

24. A method for stabilizing a gravel road surface, the method comprising:
contacting a gravel road surface with a composition comprising a biomaterial comprising a mixture of bio-derived glycerides, wherein the gravel road surface comprises 5-100% recycled asphalt (RAP), and wherein the contact results in a stable surface with enhanced binding of the recycled asphalt.

25. The method of claim 24 , wherein the composition comprises a water emulsion.

26. The method of claim 24 , wherein the composition is anhydrous.

27. A method for rejuvenating a worn or deteriorated asphalt or recycled asphalt road, comprising applying the composition of claim 1 to the road surface.

28. The method of claim 27 , wherein the composition comprises a water emulsion.

29. The method of claim 27 , wherein the composition is anhydrous.

30. A road surface or roadbed comprising the composition of claim 1 .

Assignees

• Ndsu Res Foundation

Inventors

• Bahr James Allen

Classifications

• E01C7/08

  made of road-metal and binders {(E01C7/36 takes precedence)} · CPC title

• E01C2301/50

  Methods or devices for preventing dust by spraying or sucking · CPC title

• Y02E50/13

  Cross-Sectional Technologies · mapped topic

• C09K3/22 Primary

  for dust-laying or dust-absorbing · CPC title

• C11C3/02

  by esterification of fatty acids with glycerol · CPC title