The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 2026
Filed:
Jan. 10, 2025
Claros Technologies Inc., Minneapolis, MN (US);
Zekun Liu, Brooklyn Park, MN (US);
Terrance P. Smith, Woodbury, MN (US);
Adam Michael Hilbrands, Minneapolis, MN (US);
Nathan Ernst Kamm, Minneapolis, MN (US);
Joseph Reuel Levine Tirado, Minneapolis, MN (US);
Sonja Elise Moons, Minneapolis, MN (US);
John Wilfrid Brockgreitens, Minneapolis, MN (US);
Andrew Thomas Healy, Minneapolis, MN (US);
Claros Technologies Inc., Minneapolis, MN (US);
Abstract
Methods and systems of PFAS destruction in water containing nitrate. The methods and systems include filtering water containing PFAS and nitrate through a membrane selective for PFAS to obtain a membrane reject containing PFAS and nitrate and a filtrate containing nitrate, forming a treatment solution using the membrane reject including diluting the membrane reject and combining the membrane reject with a photosensitizer, a sulfite salt, and a sufficient amount of base such that the treatment solution has a pH of about 10 or more, and irradiating the treatment solution with UV light in a photoreactor to destroy a portion of the PFAS. Before dilution, a concentration of PFAS in the membrane reject may be between about 3 times and about 20 times greater than before the filtering step. Dilution of the membrane reject may include between about a 3 and about a 20 times dilution.