Aqueous Regenerants for Desorbing PFAS Substances From Sorbents
AssigneeStride, Inc.
InventorsSeetha Coleman Kammula, Stephen Erwin Lyke, Charles Powley, Jessica Anton, Xiaohuan Qin, Jimmy Murillo Gelvez
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Abstract
Desorption of Per and Polyfluoro Alkyl Substances (PFAS) from a PFAS laden sorbent into in a solvent-free aqueous solution using low concentrations of one or more cationic surfactants, with regeneration of the sorbent.
Claims8
An aqueous solution for removing PFAS from a PFAS-laden sorbent comprising at least 95% by weight water, from 0.02 to 2% by weight of one or more cationic surfactants, from 0 to 2% of an inorganic alkali, and from 0 to 4% of an inorganic salt.
A method for regenerating a PFAS laden sorbent which comprises contacting the sorbent with an aqueous solution comprising from at least 95% by weight water, from 0.02 to 2% by weight of one or more cationic surfactants, from 0 to 2% by weight of an inorganic alkali, and from 0 to 4% by weight of an inorganic salt.
Dependencies are inferred from the claim text.