C - Chemistry – Metallurgy – 05 – F
Patent
C - Chemistry, Metallurgy
05
F
71/19, 71/22
C05F 3/00 (2006.01) C05F 5/00 (2006.01) C05F 11/02 (2006.01) C05F 17/00 (2006.01) C12P 5/02 (2006.01)
Patent
CA 1166863
A B S T R A C T The present invention relates to a method wherein solid organic material, originating from plants or animals or both, is converted by an anaerobic fermentation, that is less labour, time and space consuming than the conventional aerobic fermentation method, and may be performed with an organic material that has not to be subjected to a pre-treatment wherein a slurry having a rather low solids content is prepared. According to the present method a solid organic material originating from plants or animals or both is subjected to a treatment that consists of at least 2 steps, in the first step of which, that is performed under known anaerobic conditions in at least one primary reactor, a break down to water soluble product and low molecular weight fatty acids occurs, while in the next step(s) under anaerobic conditions methane is generated from said organic compounds. The water soluble fatty acids and other water soluble organic and inorganic materials that have been generated in the first step of the reaction, in a reaction space, are removed by rinsing with an aqueous liquid and fed to at least one auxiliary reactor while the water insoluble materials that are still present in the reaction space are left in said reaction space, while in said auxiliary reactor the organic material of said aqueous solution is converted into a mixture of carbon dioxide and methane, and subsequently the residue formed in said reaction space, that has the properties of a stabilized compost, is removed therefrom.
373978
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Instituut Voor Bewaring En Verwerking Van Landbouwprodukten
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