Methods and compositions for remediating cyanuric acid in aqueous liquids
AssigneesDanisco US Inc., Regent of the University of Minnesota
InventorsKelly Gardner Aukema, Rajdeep S. Dhaliwal, Feng Guo, Meng Hong Heng, Katherine Hoffmann, Jacob Andrew Latone, Lawrence Philip Wackett, Gregory M. Whited
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Abstract
The present disclosure is generally related to the fields of biology, inorganic chemistry, organic chemistry, molecular biology, enzymology, chlorinated water treatment processes and the like. More particularly, certain embodiments are related to reducing cyanuric acid concentrations in aqueous liquids, such as chlorinated swimming pool water, chlorinated hot tub water and the like.
Claims10
A method for remediating cyanuric acid (CYA) in an aqueous liquid comprising at least 1.0 ppm free hypochlorite, the method comprising contacting the liquid with a reductant and an enzyme comprising cyanuric acid hydrolase (CAH) activity, wherein the liquid is first contacted with a reductant followed by an enzyme having CAH activity, or the liquid is simultaneously contacted with a reductant and an enzyme having CAH activity, wherein contacting the liquid with the reductant lowers the free hypochlorite concentration to 0.5 ppm or less.
Dependencies are inferred from the claim text.