Disclosed are methods and systems for the conversion of poultry waste into useful products. Some embodiments are directed to a process for forming a product solution from poultry waste. The process includes providing a feedstock that contains greater than 60 percent poultry waste, and anaerobically digesting the feedstock to produce a digestate that has a solids content of about 5% to about 15% by weight. The process also includes separating and classifying the digestate into multiple high solids fractions and a first filtrate. The process also includes adding the high solids fractions to an acid solution to form a slurry that is then separated and classified into multiple second solids fractions and a second filtrate. The process also includes clarifying the first and second filtrates to produce a first and a second centrate. The process also includes mixing the first centrate with the second centrate to form the product solution.

Disclosed are methods and systems for the conversion of poultry waste into useful products. Some embodiments are directed to a process for forming a product solution from poultry waste. The process includes providing a feedstock that contains greater than 60 percent poultry waste, and anaerobically digesting the feedstock to produce a digestate that has a solids content of about 5% to about 15% by weight. The process also includes separating and classifying the digestate into multiple high solids fractions and a first filtrate. The process also includes adding the high solids fractions to an acid solution to form a slurry that is then separated and classified into multiple second solids fractions and a second filtrate. The process also includes clarifying the first and second filtrates to produce a first and a second centrate. The process also includes mixing the first centrate with the second centrate to form the product solution.

The present invention relates to a method of separating amino acids from an aqueous solution comprising amino acids as well as proteins and/or protein decomposition products by combining phosphoric acid with the aqueous solution to precipitate an amino acid monophosphate. The precipitate so formed may be separated from the aqueous solution and used as such, e.g. in plant fertilizer compositions. The precipitate may be redissolved in a suitable liquid, after which phosphate and amino acid may be separated following conventional methods. In either case, the present invention enables highly selective precipitation of arginine and/or lysine monophosphate as crystals.

The present invention relates to a method of separating amino acids from an aqueous solution comprising amino acids as well as proteins and/or protein decomposition products by combining phosphoric acid with the aqueous solution to precipitate an amino acid monophosphate. The precipitate so formed may be separated from the aqueous solution and used as such, e.g. in plant fertilizer compositions. The precipitate may be redissolved in a suitable liquid, after which phosphate and amino acid may be separated following conventional methods. In either case, the present invention enables highly selective precipitation of arginine and/or lysine monophosphate as crystals.

The invention relates to use of alkanolamine salts of phosphoric acid as an ammonium-free fertilizer. The invention also discloses aqueous compositions, comprising an alkanolamine salt of phosphoric acid and at least an alkanolamine metal complex.

The invention relates to use of alkanolamine salts of phosphoric acid as an ammonium-free fertilizer. The invention also discloses aqueous compositions, comprising an alkanolamine salt of phosphoric acid and at least an alkanolamine metal complex.

The invention relates to use of alkanolamine salts of phosphoric acid as an ammonium-free fertilizer. The invention also discloses aqueous compositions, comprising an alkanolamine salt of phosphoric acid and at least an alkanolamine metal complex.

A multipurpose fertilizer composition having anti-insect properties, water-retaining, and capable of improving to absorb micronutrients for plants obtained from the process of forming a homogeneous mixture by mixing a fertilizer mixture with at least three other ingredients including a chelation of trace elements solution, a water-retaining ingredient, and a plant extracts ingredients having anti-insect properties; wherein the chelation of trace elements solution having 5%-7% of the weight of the fertilizer mixture; the water-retaining ingredient having 7%-10% of the total weight of the fertilizer mixture, and the chelation of trace elements solution; the plant extracts ingredients having anti-insect properties having 0.08%-3% of the total weight of the fertilizer mixture, with the chelation of trace elements solution, and the water-retaining ingredient.

A multipurpose fertilizer composition having anti-insect properties, water-retaining, and capable of improving to absorb micronutrients for plants obtained from the process of forming a homogeneous mixture by mixing a fertilizer mixture with at least three other ingredients including a chelation of trace elements solution, a water-retaining ingredient, and a plant extracts ingredients having anti-insect properties; wherein the chelation of trace elements solution having 5%-7% of the weight of the fertilizer mixture; the water-retaining ingredient having 7%-10% of the total weight of the fertilizer mixture, and the chelation of trace elements solution; the plant extracts ingredients having anti-insect properties having 0.08%-3% of the total weight of the fertilizer mixture, with the chelation of trace elements solution, and the water-retaining ingredient.

An aqueous modified acid composition for industrial activities, said composition comprising: an alkanolamine and strong acid in a molar ratio of not less than 1:15, preferably not less than 1:10; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids.