# US 8,771,519 B2 · Method of reducing a level of metallic species contamination of a fluid

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- Number: US 8,771,519 B2
- Document ID: US8771519B2
- Status: Granted
- Kind: B2
- Application number: 13/891,563
- Filed: 2013-05-10
- Published: 2013-09-19
- Granted: 2014-07-08
- Earliest claimed: 2009-07-06
- Assignees: MAR Systems, Inc.
- Applicants: MAR Systems, LLC
- Inventors: Anthony E. Kuhel; Harry A. Adams; Gina Sacco
- Web page: https://patentgrep.com/patent/US8771519B2

## CPC

- B01J 20/20: comprising free carbon; comprising carbon obtained by carbonising processes
- B01J 20/02: comprising inorganic material
- B01J 20/0229: {Compounds of Fe}
- B01J 20/0237: {Compounds of Cu}
- B01J 20/0248: {Compounds of B, Al, Ga, In, Tl (B01J20/08 takes precedence)}
- B01J 20/0266: {Compounds of S}
- B01J 20/0281: {Sulfates of compounds other than those provided for in B01J20/045}
- B01J 20/0285: {Sulfides of compounds other than those provided for in B01J20/045}
- B01J 20/06: comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J 20/08: comprising aluminium oxide or hydroxide; comprising bauxite
- B01J 20/3204: {Inorganic carriers, supports or substrates}
- B01J 20/3236: {containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts}
- C02F 1/281: {using inorganic sorbents}
- C02F 1/288: {using composite sorbents, e.g. coated, impregnated, multi-layered}
- G21F 9/12: by absorption; by adsorption; by ion-exchange
- C02F 2101/20: Heavy metals or heavy metal compounds
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- 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)
- G21F: PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR (radiation protection by pharmaceutical means A61K8/00, A61Q17/04; in cosmonautic vehicles B64G1/54; combined with a reactor G21C11/00; combined with X-ray tubes H01J35/16; combined with X-ray apparatus H05G1/02)

## Abstract

Sorption media for removal of contaminants from fluid streams are provided. The sorption media comprise an active compound bound or linked to a support substrate or matrix. Support substrates can include iron- and alumina-based materials. A method for making sorption media for the removal of contaminants from fluid streams is also described. The method includes selecting a support substrate, and, optionally, providing a doping mixture comprising an active compound. The selected support substrate can be contacted with the doping mixture to form a doped mixture. The doped mixture can be reacted at a predetermined temperature and atmospheric environment for a predetermined duration to form an active media, wherein the active compound is bound or linked to the support substrate.

## Claims

### Claim 1

A method of reducing a level of metallic species contamination of a fluid, the method comprising:
contacting the fluid including the metallic species contamination with a sorption media, wherein the sorption media comprises a sulfur species chemically bonded to a support substrate, wherein the support substrate comprises an iron species.

### Claim 2 (depends on 1)

The method of claim 1, wherein the sulfur species is chemically bonded to the support substrate by at least one of an ionic bond and a covalent bond.

### Claim 3 (depends on 1)

The method of claim 1, wherein the support substrate includes at least one of an iron-, alumina-, silicon-, titanium, and carbon-based substrate.

### Claim 4 (depends on 1)

The method of claim 1, the support substrate further comprising a copper species.

### Claim 5 (depends on 1)

The method of claim 1, wherein the support substrate comprises alumina.

### Claim 6 (depends on 1)

The method of claim 1, wherein the sulfur species comprises at least one of a sulfate, a sulfite, and a sulfide species.

### Claim 7 (depends on 1)

The method of claim 1, wherein the fluid comprises an aqueous liquid.

### Claim 8 (depends on 1)

The method of claim 1, wherein the metallic species contamination comprises at least one of arsenic, mercury, a D-block metal, and a heavy metal species.

### Claim 9 (depends on 1)

The method of claim 1, wherein the metallic species contamination comprises at least one of selenium, nickel, barium, strontium, uranium, lead, titanium, zinc, and chromium species.

### Claim 10 (depends on 1)

The method of claim 1, wherein the metallic species contamination comprises at least one ionic mercury species, the method further comprising selecting the sorption media for contacting the fluid from a plurality of sorption medias based on the sulfur species of the selected sorption media including a sulfide species.

### Claim 11

A method of reducing a level of metallic species contamination of a fluid, the method comprising:
selecting a sorption media comprising a sulfate species chemically bonded to a support substrate for contacting the fluid from a plurality of sorption medias based on the metallic species contamination comprising at least one inorganic mercury species; and
contacting the fluid including the metallic species contamination with the selected sorption media.

### Claim 12

A method of reducing a level of metallic species contamination of a fluid, the method comprising:
selecting a sorption media comprising a sulfate species and a sulfide species chemically bonded to a support substrate for contacting the fluid from a plurality of sorption medias based on the metallic species contamination comprising at least one inorganic mercury species and at least one ionic mercury species; and contacting the fluid including the metallic species contamination with the selected sorption media.

### Claim 13

A method of reducing a level of metallic species contamination of a fluid, the method comprising:
selecting at least a first sorption media including a sulfate species chemically bonded to a first support substrate and a second sorption media including a sulfide species chemically bonded to a second support substrate for contacting the fluid from a plurality of sorption medias based on the metallic species contamination comprising at least one inorganic mercury species and at least one ionic mercury species; and
contacting the fluid including the metallic species contamination with the selected sorption medias.

### Claim 14 (depends on 1)

The method of claim 1, wherein at least a portion of the sorption media is entrained in a filter material.

### Claim 15

A method of reducing a level of metallic species contamination of a fluid, the method comprising:
contacting the fluid including the metallic species contamination with a sorption media, wherein the sorption media comprises a sulfur species chemically bonded to a support substrate and wherein at least a portion of the sorption media is incorporated into a clay liner material.