Manufacturing process for producing ammonia from anaerobic digestate liquid
AssigneeCalifornia Organic Fertilizers, Inc.
InventorTimothy Stemwedel
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Abstract
The present invention relates to organic nitrogen fertilizers and methods for producing organic nitrogen fertilizers, including retrieving high concentration organic ammonia from discarded organic material.
Claims35
A method of producing organic ammonia, comprising:
- a. heating a nitrogen-containing organic substrate in an anaerobic digester device to drive a biological anaerobic digestion of the substrate to yield a digestate;
- b. collecting an effluent of the digestate;
- c. heating said effluent to evolve CO2-laden gas from the effluent to produce a decarbonized effluent;
- d. injecting air into the decarbonized effluent to extract NH3 from said decarbonized effluent in an air/NH3 solution;
- and
- e. cooling the air/NH3 solution to yield an aqueous NH3 product derived from said nitrogen-containing organic substrate without chemical reactions.
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A liquid organic nitrogenous fertilizer composition, comprising an aqueous solution of aqueous NH3 product produced without chemical reactions and having a concentration of NH3 and other ammoniacal species in a range of about 3% to about 30% by weight.
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A method of producing organic ammonia, comprising:
- a. heating a nitrogen-containing organic substrate to yield a nitrogen-rich digestate;
- b. collecting an effluent of the digestate;
- c. heating said effluent to evolve CO2-laden gas from the effluent to lower a pH of said effluent and to produce a decarbonized effluent;
- d. passing the decarbonized effluent through Venturi injector tube and injecting air into the decarbonized effluent to cause degassing of NH3 vapor;
- and
- e. cooling the NH3 vapor to yield an aqueous NH3 solution.
Dependencies are inferred from the claim text.