Organic fertilizer and method of manufacturing it

Details Organic fertilizer and method of manufacturing it Organic fertilizer and method of manufacturing it

C - Chemistry, Metallurgy

05

F

C05F 7/02 (2006.01) C05C 11/00 (2006.01) C05F 11/02 (2006.01)

Patent

CA 2157275

The invention concerns a high-grade long-duration organic fertilizer and a method of manufacturing it by the oxidative ammonolysis of industrial lignin. The fertilizer contains nitrogen in the form of ammonium compounds normally hydrolysable amides and more strongly bound organic nitrogen, the proportion of more strongly bound organic nitrogen being 55 to 85 %, preferably 65 to 80 %, relative to the total nitrogen content of the fertilizer. The manufacturing process uses industrial lignin precipitated under alkaline conditions from alkaline waste liquors, extracts or solutions. Preliminary tests have confirmed that this process gives a natural-like high-grade, long-duration fertilizer similar to humus in character and with surprisingly good environmental compatibility.

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