	US 11,911,743 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 Apr. 3, 2020, as Appl. No. 16/839,862.
Claims priority of provisional application 62/828,790, filed on Apr. 3, 2019.
Prior Publication US 2020/0316560 A1, Oct. 8, 2020
Int. Cl. B01J 20/20 (2006.01); B01J 20/04 (2006.01); B01J 20/30 (2006.01); B01D 53/02 (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)]

13 Claims

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

providing a first sorbent material, wherein about 0.5 wt. % to about 25 wt. % of the first sorbent material comprises a salt, oxide, or hydroxide of magnesium, calcium, strontium, barium or combination or compound thereof to thereby increase the sorbent capacity of the sorbent material to perfluoroalkyl and polyfluoroalkyl substances (PFAS) relative to sorbent material that does not include the salt, oxide, or hydroxide; and

contacting the first sorbent material with a liquid or gas containing the PFAS, wherein the first sorbent material includes one or more of carbonaceous char, activated carbon, and reactivated carbon.