Beneficiation of animal manure

• US 6,312,492 B1
• Filed: 09/21/1999
• Issued: 11/06/2001
• Est. Priority Date: 09/21/1999
• Status: Expired due to Fees

• Current Assignee: Harold W. Wilson
• Original Assignee: Harold W. Wilson
• Inventors: Wilson, Harold W.
• Primary Examiner(s): Sayala, Chhaya D.
• Application Number:
  US09/400,201
• Time in Patent Office: 777 Days
• Field of Search: 71/21, 71/22, 71/23, 71/24, 71/28, 71/30, 71/34, 71/36
• US Class Current: 71/21
• CPC Class Codes: C05F 1/005 from meat-wastes or from other wastes of animal origin, e.g. skins, hair, hoofs, feathers, blood
• CPC Class Codes: C05F 11/00 Other organic fertilisers
• CPC Class Codes: C05F 3/00 Fertilisers from human or animal excrements, e.g. manure
• CPC Class Codes: Y02A 40/20 Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
• CPC Class Codes: Y02P 20/145 the feedstock being materials of biological origin

Abstract

A process for treating animal manure, particularly poultry feces, with concentrated sulfuric acid (about 93 to 95% H₂SO₄). The product of the process can be used for treating agricultural soils.

Claims

1. A process for treating animal manure materials or animal manure materials in combination with cellulose containing materials comprising directly applying concentrated sulfuric acid to said materials, thoroughly admixing said concentrated sulfuric acid and said materials, and drying the resultant mixture.

2. The process of claim 1 wherein the concentrated sulfuric acid has a concentration of about 93 to 95% H₂SO₄.

3. The process of claim 1 wherein the materials have a particle size of less than about one-quarter inch.

4. The process of claim 1 wherein the materials have been dried.

5. The process of claim 1 wherein the resultant mixture is dried at a temperature of about 100 to 105°

C.

6. The process of claim 1 wherein the materials are poultry harvest waste, poultry feces or poultry feces in combination with cellulose containing materials.

7. The process of claim 1 wherein the resultant mixture contains between about 3 and 15% of H₂SO₄ by weight.

8. The process of claim 1 wherein the resultant mixture is treated with pine oil before drying.

9. The process of claim 1 wherein the dried resultant mixture is reacted with urea.

10. The process of claim 1 wherein the dried resultant mixture is added to diammonium phosphate.

11. The process of claim 1 wherein the dried resultant mixture is used to treat agricultural soil.

12. A process for treating waste materials selected from the group consisting of animal harvest waste, animal manure and animal manure in combination with cellulose containing materials comprising directly adding concentrated sulfuric acid having a concentration of about 93 to 95% by weight to said waste materials, thoroughly admixing said concentrated sulfuric acid and said materials, and drying the resultant mixture.

13. The process of claim 12 wherein the concentrated sulfuric acid has a concentration of about 93.17% H₂SO₄.

14. The process of claim 12 wherein the materials have a particle size of less than about one-quarter inch.

15. The process of claim 12 wherein the materials have been dried.

16. The process of claim 12 wherein the resultant mixture is dried at a temperature of about 100 to 105°

C.

17. The process of claim 12 wherein the materials are poultry feces or poultry feces in combination with cellulose containing materials.

18. The process of claim 12 wherein the resultant mixture contains between about 3 and 15% of H₂SO₄ by weight.

19. The process of claim 12 wherein the resultant mixture is treated with pine oil before drying.

20. The process of claim 12 wherein the dried resultant mixture is reacted with urea.

21. The process of claim 12 wherein the dried resultant mixture is added to diammonium phosphate.

22. The process of claim 12 wherein the dried resultant mixture is used to treat agricultural soil.

23. A product for treating agricultural soil prepared by the process of directly applying a concentrated sulfuric acid to animal manure materials or animal manure materials in combination with cellulose containing materials to thoroughly admix said concentrated sulfuric acid and said materials, and drying the resultant mixture.

24. The produce of claim 23 wherein the concentrated sulfuric acid has a concentration of about 93 to 95% H₂SO₄.

25. The product of claim 23 wherein the materials have a particle size of about less than one-quarter inch.

26. The product of claim 23 wherein the materials have been dried.

27. The product of claim 23 wherein the materials are selected from the group consisting of poultry feces or poultry feces in combination with cellulose containing materials.

28. The product of claim 23 wherein the dried resultant mixture is treated with pine oil.