Back to results
US 7,588,744 B1Granted
Method of recovering phosphate for reuse as a fertilizer
AssigneeLayne Christensen Company
InventorPaul Sylvester
Life of this patent
Estimating the term…
Abstract
A method for removing and recovering phosphorus from a spent adsorbent medium to result in a regenerated medium and a phosphorus-containing solution useful as a fertilizer.
Claims12
A method for recovering phosphorus desorbed from an influent solution to an adsorptive medium, resulting in a spent medium, the method comprising
- contacting the phosphorus containing spent medium with a solution of potassium hydroxide to form a first effluent;
- and
- contacting the first effluent with a solution of nitric acid to form a second effluent, the second effluent containing phosphorus, potassium, and nitrogen.
Dependencies are inferred from the claim text.