Chemistry: fertilizers – Processes and products – Bacterial
Patent
1992-03-27
1994-10-11
Lander, Ferris
Chemistry: fertilizers
Processes and products
Bacterial
71 12, 71 14, 71 15, 71 23, C05F 904, C05F 1108
Patent
active
053543491
ABSTRACT:
There is provided a continuous method for manufacturing of organic fertilizers by fermentation of a waste containing organic materials or mixture of said waste with cellulose-containing organic materials in the presence of thermophilic and aerobic microorganisms comprising the steps:
a. adjusting the moisture content of said waste or mixture to 45-65 wt %,
b. shearing and kneading said waste or mixture at a temperature elevated to 40.degree. C.-90.degree. C. by the pressure and friction of said shearing and kneading, whereby thermophilic microorganisms are caused to be activated, and
c. pulverizing the thus-treated waste or mixture while contacting it with air, whereby said aerobic microorganisms are caused to be activated,
the improvement which comprises subjecting a part of the product of step c. to fermentation by thermophilic microorganisms at a temperature of higher than 40.degree. C. for more than 5 hours, and recycling the thus treated product with fresh raw materials to step a., the recycled amount of product of step c. being 5 to 60 weight % of the total amount of manufactured product.
REFERENCES:
patent: 4050917 (1977-09-01), Varro
patent: 4342830 (1982-08-01), Holloway
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