# US 9,517,424 B2 · Method for removing hydrogen phosphate from an aqueous solution using alpha zirconium phosphate

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- Number: US 9,517,424 B2
- Document ID: US9517424B2
- Status: Granted
- Kind: B2
- Application number: 14/004,231
- Filed: 2012-04-09
- Published: 2014-01-30
- Granted: 2016-12-13
- Earliest claimed: 2011-04-14
- Assignees: University of Florida Research Foundation, Inc.
- Applicants: Jeffrey J. Keaffaber; Daniel R. Talham
- Inventors: Jeffrey J. Keaffaber; Daniel R. Talham
- Web page: https://patentgrep.com/patent/US9517424B2

## CPC

- C02F 1/281: {using inorganic sorbents}
- B01D 15/00: Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D 15/02: with moving adsorbents
- B01D 39/14: Other self-supporting filtering material {; Other filtering material (non-woven fabrics in general D04H3/00)}
- B01J 20/0211: {Compounds of Ti, Zr, Hf}
- B01J 20/0292: {Phosphates of compounds other than those provided for in B01J20/048}
- B01J 20/10: comprising silica or silicate
- B01J 20/103: {comprising silica}
- B01J 20/22: comprising organic material
- B01J 20/28007: {with size in the range 1-100 nanometers, e.g. nanosized particles, nanofibers, nanotubes, nanowires or the like (carbon nanostructures B01J20/205)}
- B01J 20/3204: {Inorganic carriers, supports or substrates}
- B01J 20/3208: {Polymeric carriers, supports or substrates}
- B01J 20/3236: {containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts}
- B01J 20/3265: {with an organic functional group containing a metal, e.g. a metal affinity ligand}
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- C02F 2101/103: {Arsenic compounds}
- C02F 2101/105: {Phosphorus compounds}
- C02F 2305/08: Nanoparticles or nanotubes
- Y02W 10/37: using solar energy
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

## Abstract

Embodiments of the present disclosure provide metal ligand nanoparticles, particles including the metal ligand nanoparticles, filters including the metal ligand nanoparticles and/or particles, devices and systems for filtering a fluid, compositions including the metal ligand nanoparticles, and the like.

## Claims

### Claim 1

A method of removing a contaminant from an aqueous solution, the method comprising:
exposing the aqueous solution to a filter, wherein the aqueous solution includes the contaminant, wherein the filter comprises alpha-zirconium phosphate; and
removing the contaminant when the contaminant in the aqueous solution contacts the alpha-zirconium phosphate in the filter,
wherein the contaminant is HPO42−.