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

Patent 5961968 Issued on October 5, 1999. Estimated Expiration Date:

May 1, 2016. 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

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Inventor

Moore, Jr., Philip A.

Assignee

Trustees of University of Arkansas

Application

No. 640623 filed on 05/01/1996

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 PRODUCT422/4, A gas is substance acted upon422/5, Deodorizing424/682, Aluminum, calcium or magnesium element, or compound containing424/698Alum or burnt alum

Examiners

Primary: Harrison, Robert H.

Attorney, Agent or Firm

Needle & Rosenberg, P.C., Plantamura; Arthur J.

Foreign Patent References

0 156 924 B1 EP. 10/13/1985
0 557 078 A1 EP. 08/13/1993
7-163641 JP. 06/13/1995
84/02334 WO. 06/13/1984

International Class

A61L 009/01

Abstract

A method for treating poultry litter which inhibits ammonia volatilization and reduces soluble phophorus levels in the litter. The method comprises the addition of alum to litter in an amount sufficient to maintain the litter pH at values low enough to inhibit ammonia volatilization. The addition of alum, iron or calcium compounds to litter also effectively precipitates soluble phosphorus in litter, thereby reducing the amount of soluble phosphorus runoff from fields receiving litter.