# US 2013/0277293 A1 · Magnetic extractants, method of making and using the same

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- Number: US 2013/0277293 A1
- Document ID: US20130277293A1
- Status: Published application
- Kind: A1
- Application number: 13/925,350
- Filed: 2013-06-24
- Published: 2013-10-24
- Earliest claimed: 2010-12-14
- Assignees: King Abdulaziz City for Science and Technology
- Applicants: King Abdulaziz City for Science and Technology
- Inventors: Sulaiman M. ALFADUL; Abdulrahman I. Alabdula'aly; Mujahid A. KHAN
- Web page: https://patentgrep.com/patent/US20130277293A1

## CPC

- C02F 1/48: with magnetic or electric fields (C02F1/46 takes precedence)
- B03C 1/01: by addition of magnetic adjuvants
- B03C 1/288: {disposed at the outer circumference of a recipient}
- B03C 1/30: Combinations with other devices, not otherwise provided for
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- C02F 1/488: {for separation of magnetic materials, e.g. magnetic flocculation}
- C07F 15/025: {without a metal-carbon linkage}
- B03C 2201/18: Magnetic separation whereby the particles are suspended in a liquid
- B03C 2201/26: for use in medical or biological applications
- C02F 1/288: {using composite sorbents, e.g. coated, impregnated, multi-layered}
- C02F 1/681: {by addition of solid materials for removing an oily layer on water}
- C02F 2305/08: Nanoparticles or nanotubes
- Y10S 977/733: Nanodiaphragm
- Y10S 977/773: Nanoparticle, i.e. structure having three dimensions of 100 nm or less
- Y10S 977/811: Of specified metal oxide composition, e.g. conducting or semiconducting compositions such as ITO, ZnOx
- Y10S 977/838: Magnetic property of nanomaterial
- Y10S 977/896: Chemical synthesis, e.g. chemical bonding or breaking
- 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)
- B03C: MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS (separating isotopes B01D59/00; combinations of magnetic or electrostatic separation with separation of solids by other means B03B, B07B)
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A water treatment composition capable of effectively adsorbing pollutants from water is described. The composition includes magnetic extractants, which comprise magnetite nanoparticles containing functional groups. The composition is used to remove from water and aqueous streams oils and other contaminants. A process for removing contaminants from water and apparatus used in the process are also described.

## Claims

### Claim 1

An apparatus for making magnetic reactants comprising:
a hybridization oven including one or more hybridization tubes;
a dosing unit;
a mixer unit operatively connected to the dosing unit;
a separation unit operatively connected to the mixer unit;
means for applying magnetic field to the separation unit;
a collection unit operatively connected to the separation unit which collects used magnetic reactants; and
a clean water tank for collecting from the collection unit a substantially clean aqueous fluid, which is substantially free of impurities.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the means for applying the magnetic field comprises a magnet or an electromagnet.