Methods of extracting inorganic nutrients from pretreated biomass to form a fertilizer composition, and related systems
First Claim
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1. A method of making a fertilizer composition from pretreated biomass, the method comprising:
- a) fermenting the pretreated biomass to provide a fermentation beer, wherein the pretreated biomass is derived from a biomass feedstock comprising a grain, and wherein the fermentation beer comprises a solid component and an aqueous liquid component;
b) exposing the fermentation beer to a distillation process to form a whole stillage,c) separating the whole stillage into wet cake and thin stillage;
d) passing after step c) the thin stillage through a membrane filter to form a permeate and a retentate, wherein the retentate comprises insoluble solids and the permeate comprises one or more inorganic nutrients in solution, and wherein the permeate forms the fertilizer composition.
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Abstract
The present disclosure includes methods of making a fertilizer composition from pretreated biomass by removing one or more inorganic nutrients from a fermentation beer to form an aqueous fertilizer composition. The present disclosure also includes systems configured to make a fertilizer composition from pretreated biomass, where the systems include one or more apparatuses in fluid communication with a fermentation vessel, wherein at least one apparatus is configured to remove one or more inorganic nutrients from the fermentation beer to form an aqueous fertilizer composition.
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Citations
14 Claims
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1. A method of making a fertilizer composition from pretreated biomass, the method comprising:
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a) fermenting the pretreated biomass to provide a fermentation beer, wherein the pretreated biomass is derived from a biomass feedstock comprising a grain, and wherein the fermentation beer comprises a solid component and an aqueous liquid component; b) exposing the fermentation beer to a distillation process to form a whole stillage, c) separating the whole stillage into wet cake and thin stillage; d) passing after step c) the thin stillage through a membrane filter to form a permeate and a retentate, wherein the retentate comprises insoluble solids and the permeate comprises one or more inorganic nutrients in solution, and wherein the permeate forms the fertilizer composition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of making a fertilizer composition from pretreated biomass, the method comprising:
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a) fermenting the pretreated biomass to provide a fermentation beer, wherein the pretreated biomass is derived from a biomass feedstock comprising corn stover, wherein the fermentation beer comprises a solid component and an aqueous liquid component; b) exposing the fermentation beer to a distillation process to form a bottom slurry comprising the solid component, water, and the one or more inorganic nutrients in solution; c) separating at least a portion of the water and one or more inorganic nutrients in solution from at least a portion of solid component in the slurry to form an aqueous liquid stream and a lignin cake stream; and d) passing the aqueous liquid stream through a membrane filter to form a permeate and a retentate, wherein the retentate comprises insoluble solids and the permeate comprises one or more inorganic nutrients in solution, and wherein the permeate forms the fertilizer composition. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification