05993503 is referenced by 22 patents and cites 12 patents.

The invention relates to a method for dephosphorizing manure, in particular pig manure, comprising of causing phosphate to dissolve, which phosphate is present at least partially in the form of phytate in the manure, separating the manure into a solid and a liquid fraction and removing the phosphate from the liquid fraction of the manure.

Causing phosphate to dissolve can be achieved in different ways, for instance by storing the manure for a predetermined period of time under conditioned circumstances, or by sustaining a continuous movement of the manure at a temperature of at least 15.degree. C., preferably between 20 and 40.degree. C., to allow free escape therefrom of formed gases, or by the presence of means for complexing divalent ions, or by the enzymatic decomposition of phytate present in the manure. The phosphate is preferably removed from the liquid fraction by causing struvite to be precipitated therefrom.

Title
Method for dephosphorizing pig manure
Application Number
8/528195
Publication Number
5993503
Application Date
September 14, 1995
Publication Date
November 30, 1999
Inventor
Hendrik Kruidhof
Almelo
NL
Agent
Webb Ziesenheim Logsdon Orkin & Hanson P C
Assignee
Ceres Milieu Holding
NL
IPC
C05F 3/00
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