Abstract: A multi-faceted process for preparing uric acid of varying degrees of purity includes a first phase wherein uric acid of approximately 80-90% purity is prepared by dissolving fecal matter containing uric acid in a dilute alkali solution and then separating any undissolved solid residue therefrom. An ammonium salt is added to the solution to precipitate ammonium urate, which is readily convertible by conventional means to uric acid of 80-90% purity. Uric acid of even greater purity is prepared in the second phase by dissolving a relatively impure uric acid product, such as the above ammonium urate, in a second dilute alkali solution. Urate salt is then precipitated by gradually adjusting the pH of the second alkali solution with a dilute mineral acid to a pH of about 10.5. The urate salt is subsequently separated and converted to uric acid by suspending it in hot dilute mineral acid, the resultant uric acid having a purity of approximately 99%.

Abstract: Poultry feces are processed through a digester and a separator to produce undissolved solid material and a liquid filtrate. The solid material contains primarily food undigested by the poultry which is blended with comminuted egg shells, comminuted feathers, nutrients to provide a balanced food and new food to produce feed for fowl or stock. The filtrate is chemically treated for recovery of uric acid precipitate, and the remaining filtrate is used as a bacterial culture to produce bacterial protein. Used liquid from the bacterial culture is used as hydroponic culture to grow green fodder.