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.

A method of sorbing a PFAS compound from a contaminated environment can include admixing a modified clay sorbent with the environment. The modified clay can include a clay intercalated with a blend of mono-quaternary amine compound and di-quaternary amine compound.

A method of manufacturing a hydrocarbon absorbent structure comprises providing a lower sheet of material and dispensing a hydrocarbon absorbent polymer mixture thereon. The polymer mixture is then preheated so as to at least partially melt the polymer mixture. An upper sheet of material is then provided onto the at least partially melted polymer mixture on the lower sheet of material. The lower sheet of material, polymer mixture and upper sheet of material are then laminated together to form a hydrocarbon absorbent laminate structure.

A method of synthesizing a medium for fast, selective oil-water separation and/or oil absorption comprises providing a toluene solution containing a polymer or a polymer mixture; immersing porous wool-like structure (PW) in the toluene solution for a period of time; and removing the immersed PW from the toluene solution, and heat-treating the immersed PW to obtain the medium comprising polymer-modified PW, wherein the polymer or the polymer mixture is adapted such that the medium is a superwetting material that is superhydrophobic and superoleophilic under water or salty water.

Provided are anti-pathogenic sintered nanoparticle compounds made of zeolite, silver nitrate (AgNO.sub.3), silver dioxide nanoparticles (Ag.sub.2O np), and graphene. Provided are enhanced granulated activated charcoal (EGAC) compounds made of granulated activated charcoal, silver nitrate (AgNO.sub.3), silver dioxide nanoparticles (Ag.sub.2O np), and graphene. Uses of the same are provided, including in enhanced filtration systems and/or pressurized wastewater filtration plants.

Magnetic nanoparticle coated porous materials for recovering a contaminant from contaminated water are provided. In embodiments, such a material comprises a porous substrate having a solid matrix defining a plurality of pores distributed through the solid matrix and further comprising a coating comprising magnetic nanoparticles on surfaces of the solid matrix.

A filter for a water purifier includes a filter housing that defines an inlet and an outlet, and a filter module disposed inside the filter housing and configured to purify water received through the inlet and supply purified water to the outlet. The filter module includes a carbon block that includes a mixture of: activated carbon having a weight corresponding to 40 to 50% of a weight of the mixture, a binder having a weight corresponding to 5 to 15% of the weight of the mixture, iron hydroxide having a weight corresponding to 10 to 20% of the weight of the mixture, and titanium oxide having a weight corresponding to 30 to 40% of the weight of the mixture.

A method for making crown ether functionalized substrates, which includes modifying crown ether-based molecules by reacting with carboxylic acid functionalize chains. The crown ether-based molecules are then attached to substrates, thereby forming crown ether functionalized substrates.

This invention relates to treated geothermal brine compositions containing reduced concentrations of lithium, iron and silica compared to the untreated brines. Exemplary compositions contain concentration of lithium ranges from 0 to 200 mg/kg, concentration of silica ranges from 0 to 30 mg/kg, concentration of iron ranges from 0 to 300 mg/kg. Exemplary compositions also contain reduced concentrations of elements like arsenic, barium, and lead.

A method of water uptake is provided. The method includes contacting a hydrogen-bonded organic framework (HOF) with water to form a mixture where the HOF comprises hydrogen bonded units of trimesic acid and guanazole. The HOF has a sheet structure, where the sheets form an intercrossed macroporous network with pores on a surface. The HOF absorbs at least a portion of the water in the mixture.