Treatment process for pfas-containing compounds
AssigneeHeritage Research Group
InventorRachel Taylor
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Abstract
An improved method for separating PFAS substances from contaminated water and polar solvent systems using alkyl quaternary ammonium compound comprising of coagulation, flocculation, or phase separation thereof is disclosed. The aforementioned compounds may form electrostatic complexes that are insoluble in polar solvents aiding in separation.
Claims46
A method of removing at least one polyfluoroalkyl compound from a medium, comprising contacting said medium with a compound of Formula I:
- wherein
- R1 is selected from optionally substituted C1-C30 alkyl and optionally substituted C2-C30 alkenyl;
- R2 is selected from optionally substituted C1-C30 alkyl and optionally substituted C2-C30 alkenyl;
- R3 and R4 are each independently selected from optionally substituted C10-C30 alkyl and optionally substituted C10-C30 alkenyl;
- and
- X− is a counter anion.
A compound of Formula II:
- wherein
- R5 is selected from optionally substituted C1-C30 alkyl and optionally substituted C2-C30 alkenyl;
- R6 is selected from optionally substituted C1-C30 alkyl and optionally substituted C2-C30 alkenyl;
- R7 and R8 are each independently selected from optionally substituted C10-C30 alkyl and optionally substituted C10-C30 alkenyl;
- and
- Z− is a perfluoroalkanoate anion, a perfluorosulfonate anion, a polyfluoroalkanoate anion, or a polyfluorosulfonate anion.
A method of treating a medium containing an initial molar concentration of a perfluoroalkyl compound or a polyfluoroalkyl compound, comprising contacting said medium a compound of Formula I:
- wherein
- R1 is selected from optionally substituted C1-C30 alkyl and optionally substituted C2-C30 alkenyl;
- R2 is selected from optionally substituted C1-C30 alkyl and optionally substituted C2-C30 alkenyl;
- R3 and R4 are each independently selected from optionally substituted C10-C30 alkyl and optionally substituted C10-C30 alkenyl;
- and
- X− is a counter anion.
Dependencies are inferred from the claim text.