Back to results
US 11,518,689 B2Granted
Composition and method for capture and degradation of PFAS
AssigneeBattelle Memorial Institute
InventorsRadha K. Motkuri, Sayandev Chatterjee, Dushyant Barpaga, Bernard P. McGrail
Life of this patent
Estimating the term…
Abstract
Materials for binding per- and polyfluoroalkyl substances (PFAS) are disclosed. A fluidic device comprising the materials for detection and quantification of PFAS in a sample is disclosed. The fluidic device may be configured for multiplexed analyses. Also disclosed are methods for sorbing and remediating PFAS in a sample. The sample may be groundwater containing, or suspected of containing, one or more PFAS.
Claims20
A method, comprising:
- removing a per- or polyfluoroalkyl substance (PFAS) from a sample by
- combining the sample with a composite sorbent, thereby sorbing the PFAS to the sorbent to form a PFAS-sorbent, the composite sorbent comprising at least two different materials selected from (a) a metal-organic framework (MOF), a covalent organic framework (COF), a covalent organic polymer (COP), zeolites, mesoporous silica, hierarchical porous carbon in combination with (b) at least one of a polymer, a zeolite, a covalent organic framework, mesoporous silica, a hierarchical porous carbon, a photocatalyst, a carbon nanotube, graphite, graphene, graphene oxide, a Prussian blue analog, or a metal oxide;
- and
- separating the PFAS-sorbent from the sample, wherein
- (i) the MOF, if present, does not comprise [Zr6O4(OH)4] and 1,4-benzodicarboxylic acid (UiO-66), and/or
- (ii) the polymer, if present, is not poly(ethylene-co-vinyl acetate).
3 more elements
A method, comprising:
- detecting presence of PFAS in a sample by
- combining a sample with a sorbent comprising a redox-active metal-organic framework (MOF) to sorb PFAS present in the sample to the MOF to form a PFAS-sorbent;
- measuring a redox signal of the combined sample and MOF using voltammetry;
- and
- comparing the redox signal to a redox signal of the MOF in a sample that does not comprise a PFAS, wherein a difference between the redox signals indicates presence of PFAS in the sample.
2 more elements
Dependencies are inferred from the claim text.