	US 12,478,948 B2
	Perfluoroalkyl and polyfluoroalkyl sorbent materials and methods of use
Rebecca L. Distefano, Oakdale, PA (US); and Richard A. Mimna, Oakdale, PA (US)
Assigned to CALGON CARBON CORPORATION, Moon Township, PA (US)
Filed by CALGON CARBON CORPORATION, Moon Township, PA (US)
Filed on Feb. 15, 2024, as Appl. No. 18/442,503.
Application 18/442,503 is a continuation of application No. 16/839,862, filed on Apr. 3, 2020, granted, now 11,911,743.
Claims priority of provisional application 62/828,790, filed on Apr. 3, 2019.
Prior Publication US 2024/0246059 A1, Jul. 25, 2024
Int. Cl. B01J 20/20 (2006.01); B01D 53/02 (2006.01); B01J 20/04 (2006.01); B01J 20/30 (2006.01); C02F 1/28 (2023.01); C02F 101/36 (2006.01)

CPC B01J 20/20 (2013.01) [B01D 53/02 (2013.01); B01J 20/041 (2013.01); B01J 20/3028 (2013.01); C02F 1/283 (2013.01); C02F 2101/36 (2013.01)]

5 Claims

1. A method of removing perfluoroalkyl and polyfluoroalkyl substances (PFAS) from liquid or gas, the method comprising:

providing a sorbent material comprising reactivated carbon, wherein the reactivated carbon is formed from a spent activated carbon, wherein the spent activated carbon was previously used for water filtration; and

contacting the sorbent material with a liquid or gas containing the PFAS wherein the reactivated carbon was reactivated by heat at a temperature of about 500° C. to about 1100° C..