Sorbents having high volumetric iodine and molasses values for removal of pfas from fluids and methods of making and using the same
AssigneeCalgon Carbon Corporation
InventorRebecca L. DISTEFANO
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Abstract
The disclosure provides sorbents and sorbents that improve the adsorption of per- and polyfluoroalkyl substances (PFAS). The sorbents and sorbents have microstructures that efficiently adsorb PFAS, as shown by the combination of high volumetric iodine number and high volumetric molasses number. Methods of manufacturing and methods of use are further provided.
Claims23
A sorbent for removing one or more perfluoroalkyl and polyfluoroalkyl substances (PFAS) from a fluid, the sorbent having a volumetric iodine number of at least about 450 mg/cm3 and a volumetric molasses number of at least about 100 cm−3.
A method of removing one or more perfluoroalkyl and polyfluoroalkyl substances from a fluid, the method comprising:
- providing a sorbent having a volumetric iodine number of at least about 450 mg/cm3 and a volumetric molasses number of at least about 100 cm−3;
- and
- contacting the fluid with the sorbent.
A sorbent composition comprising one or more sorbents having a volumetric iodine number of at least about 450 mg/cm3 and a volumetric molasses number of at least about 100 cm−3 and optionally a second sorbent.
Dependencies are inferred from the claim text.