Use of alum to inhibit ammonia volatilization and to decrease phosphorus solubility in poultry litter

Patent 5914104 Issued on June 22, 1999. Estimated Expiration Date:

May 7, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3029783

Treatment of municipal waste sludges
Patent #: 4028238
Issued on: 06/07/1977
Inventor: Allan

Method and composition, including particular additive for hydraulic cement, for fixing waste matter
Patent #: 4209335
Issued on: 06/24/1980
Inventor: Katayama , et al.

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Inventor

Moore, Jr., Philip A.

Assignee

Trustees of the University of Arkansas

Application

No. 852273 filed on 05/07/1997

US Classes:

424/76.6, Waste includes fecal material or urine (e.g., feed lot or cage waste, pet litter, etc.)119/171, MATERIAL FOR ABSORBING MOISTURE FROM WASTE PRODUCT210/906, Phosphorus containing424/646, Iron, cobalt, nickel, vanadium, molybdenum, or palladium424/647, Ferric424/648, Ferrous424/663, Chloride424/682, Aluminum, calcium or magnesium element, or compound containing424/687, Calcium carbonate424/693, Calcium hydroxide424/698, Alum or burnt alum424/709Sulfate

Examiners

Primary: Krass, Frederick

Attorney, Agent or Firm

Foreign Patent References

0 156 924 B1 EP. 10/13/1985
0 557 078 A1 EP. 08/13/1993
84/02334 WO. 06/13/1984

International Class

A61L 009/00

Abstract

Short term control of ammonia volatilization from animal manures is provided by surface treatment with aluminum sulfate. The aluminum sulfate may be applied to manure or manure receiving surfaces in an animal rearing facility in solid or liquid form. The control of atmospheric ammonia levels in animal rearing facilities to preferably less than about 25 ppm ammonia can be achieved by surface treatment employing amounts of alum as low as 0.5% by weight alum based on manure present.