US 11,970,409 B2
Destruction of PFAS via an oxidation process and apparatus suitable for transportation to contaminated sites
Lindy E. Dejarme, Columbus, OH (US); Kavitha Dasu, Powell, OH (US); Russell R. Sirabian, Columbus, OH (US); Jeffrey Ellis, Columbus, OH (US); Dan Garbark, Columbus, OH (US); Nathan Bryant, Columbus, OH (US); John Tallarico, Columbus, OH (US); Joseph Casciano, Columbus, OH (US); Slawomir Winecki, Columbus, OH (US); David Holley, Columbus, OH (US); Joshua James, Columbus, OH (US); Keith Brown, Solon, OH (US); Doug Hendry, Columbus, OH (US); Darwin Argumedo, Columbus, OH (US); Aaron Frank, Dublin, OH (US); Christopher Gordon Scheitlin, Columbus, OH (US); and Michael M. Miller, Worthington, OH (US)
Assigned to Revive Environmental Technology, LLC, Columbus, OH (US)
Filed by Revive Environmental Technology, LLC, Columbus, OH (US)
Filed on Nov. 21, 2022, as Appl. No. 17/990,765.
Application 17/990,765 is a continuation of application No. 17/871,907, filed on Jul. 23, 2022, granted, now 11,780,753.
Application 17/871,907 is a continuation of application No. 16/916,085, filed on Jun. 29, 2020, granted, now 11,401,180.
Claims priority of provisional application 62/948,765, filed on Dec. 16, 2019.
Claims priority of provisional application 62/868,858, filed on Jun. 28, 2019.
Prior Publication US 2023/0227335 A1, Jul. 20, 2023
Int. Cl. C02F 1/44 (2023.01); B01J 3/00 (2006.01); B01J 4/00 (2006.01); C02F 1/04 (2023.01); C02F 1/58 (2023.01); C02F 1/72 (2023.01); C02F 101/36 (2006.01)
CPC C02F 1/441 (2013.01) [B01J 3/008 (2013.01); B01J 4/002 (2013.01); C02F 1/04 (2013.01); C02F 1/583 (2013.01); C02F 1/722 (2013.01); C02F 2101/36 (2013.01); C02F 2201/002 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of destroying PFAS in a PFAS-containing mixture, comprising: subjecting the PFAS-containing mixture to a separation procedure comprising separating the PFAS-containing mixture into a PFAS-enriched fraction and a PFAS-depleted fraction;
heating at least a portion of the PFAS-depleted fraction to a temperature of at least 300° C. to form a heated PFAS-depleted fraction and wherein the PFAS-enriched fraction not being subjected to this heating step; and
prior to a supercritical destruction phase, combining the heated PFAS-depleted fraction with the PFAS-enriched fraction having a lower temperature than the heated PFAS-depleted fraction to form a hot PFAS-containing mixture; and
reacting the hot PFAS-containing mixture with an oxidant under supercritical conditions in the supercritical destruction phase.