US3966450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Animal waste odor treatment
Assignee: FMC Corp
•
Filing: 1974-08-12
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Granted: 1976-06-29
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Expires: 1994-08-12
Abstract
Abstract Controlling the odor of an animal waste slurry and increasing the plant nutrient values in said animal waste slurry is achieved by contacting an animal waste slurry with about 5 ppm to about 500 ppm hydrogen peroxide, adjusting the pH of the slurry to between about 4.0 and about 8.0 with a mineral acid, mixing the slurry until the odor is no longer objectionable, and recovering the animal waste slurry which contains increased amounts of ammonium salt values.
Inventors
- 👤 Eugene T. O'Neill
- 👤 William H. Kibbel, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:52
CPC Classifications
C; C05; C05F; C05F3/00; A; A61; A61L; A61L11/00; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/20; Y02P; Y02P20/00; Y02P20/141; Y02P20/145; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/916
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
132 words
A process for simultaneously controlling the odor of an animal waste slurry and increasing the plant nutrient values in said animal waste slurry, which comprises: contacting an animal waste slurry with about 5 ppm to about 500 ppm hydrogen peroxide as an aqueous hydrogen peroxide solution based on 100% hydrogen peroxide; adjusting the pH of the slurry to between about 4.0 and about 8.0 with a mineral acid selected from the group consisting of phosphoric acid, sulfuric acid, and nitric acid; mixing the slurry until the animal waste odor is no longer objectionable whereby ammonia and related amine odors are converted into ammonium salts; and recovering a treated animal waste slurry containing increased amounts of ammonium salts selected from the group consisting of ammonium phosphate salts, ammonium sulfate salts, and ammonium nitrate.
Claim 2
Dependent Claim
132 words
A process for simultaneously controlling the odor of an animal waste slurry and increasing the plant nutrient values in said animal waste slurry, which comprises: contacting an animal waste slurry with about 5 ppm to about 500 ppm hydrogen peroxide as an aqueous hydrogen peroxide solution based on 100% hydrogen peroxide; adjusting the pH of the slurry to between about 4.0 and about 8.0 with a mineral acid selected from the group consisting of phosphoric acid, sulfuric acid, and nitric acid; mixing the slurry until the animal waste odor is no longer objectionable whereby ammonia and related amine odors are converted into ammonium salts; and recovering a treated animal waste slurry containing increased amounts of ammonium salts selected from the group consisting of ammonium phosphate salts, ammonium sulfate salts, and ammonium nitrate.
Claim 3
Dependent Claim
34 words
The process of claim 1 wherein the pH of the slurry is adjusted to between about 4.5 and about 7.5 with phosphoric acid and the ammonium phosphate salt values are increased in said slurry.
Claim 4
Dependent Claim
34 words
The process of claim 1 wherein the pH of the slurry is adjusted to between about 5.0 and about 7.0 with sulfuric acid and the ammonium sulfate salt values are increased in said slurry.
Claim 5
Dependent Claim
33 words
The process of claim 1 wherein the pH of the slurry is adjusted to between about 3.5 and about 5.5 with nitric acid and the ammonium nitrate values are increased in said slurry.
Claim 6
Dependent Claim
26 words
The process of claim 1 wherein the slurry is contacted with about 50 ppm to about 200 ppm hydrogen peroxide as an aqueous hydrogen peroxide solution.
References Cited (Backward Citations)
US3050383A
Cited
US3705098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |