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

Patent 5622697 Issued on April 22, 1997. Estimated Expiration Date:

May 10, 2015. 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

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Inventor

Moore, Jr., Philip A.

Application

No. 437991 filed on 05/10/1995

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 containing424/682, Aluminum, calcium or magnesium element, or compound containing424/687, Calcium carbonate424/693, Calcium hydroxide424/698Alum or burnt alum

Examiners

Primary: Hulina, Amy

Attorney, Agent or Firm

Hill, Steadman & Simpson

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.