US 12,064,745 B2
Iron and nitrogen treated sorbent and method for making same
Jason P. Mazzoccoli, Pittsburgh, PA (US); Ryan W. Walker, Pittsburgh, PA (US); Walter G. Tramposch, Moon Township, PA (US); Keita Takahashi, Bizen (JP); and Aya Benzaki, Bizen (JP)
Assigned to CALGON CARBON CORPORATION, Moon Township, PA (US); and KURARAY CO., LTD., Kurashiki (JP)
Filed by CALGON CARBON CORPORATION, Moon Township, PA (US); and KURARAY CO., LTD., Kurashiki (JP)
Filed on Aug. 31, 2021, as Appl. No. 17/446,501.
Claims priority of provisional application 63/072,514, filed on Aug. 31, 2020.
Prior Publication US 2022/0062855 A1, Mar. 3, 2022
Int. Cl. B01J 20/20 (2006.01); B01J 20/02 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); C02F 1/28 (2023.01); C02F 101/16 (2006.01)
CPC B01J 20/20 (2013.01) [B01J 20/0229 (2013.01); B01J 20/0259 (2013.01); B01J 20/3078 (2013.01); B01J 20/3085 (2013.01); C02F 1/283 (2013.01); B01J 20/2808 (2013.01); B01J 2220/42 (2013.01); B01J 2220/4806 (2013.01); B01J 2220/4825 (2013.01); B01J 2220/4881 (2013.01); C02F 2101/16 (2013.01); C02F 2303/04 (2013.01)] 31 Claims
OG exemplary drawing
 
1. A sorbent material formed from a carbonaceous material comprising coconut that is activated to form a precursor activated carbon, the sorbent material comprising:
at least about 1.3 wt. % nitrogen as measured on a dry precursor activated carbon basis;
at least about 1,000 mg/kg of iron as measured on a dry precursor activated carbon basis; and
wherein the sorbent material has a volumetric chloramine removal amount of about 85 mg/mL or more when measured with a stream of water that contacts the sorbent material.