C - Chemistry – Metallurgy – 05 – F
Patent
C - Chemistry, Metallurgy
05
F
C05F 3/00 (2006.01)
Patent
CA 2061098
EN 4125 "CONTINUOUS PROCESS FOR THE PREPARATION OF FERTILIZERS FROM ANIMAL WASTE" Abstract A continuous process is described for the preparation of fertilizers from animal waste consisting of the following steps: a) anaerobic fermentation of waste up to BOD5 of 300-2000, b) treatment with HNO3 up to pH 1-2, c) treatment with Ca(OH)2 up to pH 6.5-7 and S.A.R. index <6, with the addition of small quantities of H2O2 before or after step c).
Enichem Agricoltura S.p.a.
Robic
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