# US 10,479,704 B2 · Proppants for removal of contaminants from fluid streams and methods of using same

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- Number: US 10,479,704 B2
- Document ID: US10479704B2
- Status: Granted
- Kind: B2
- Application number: 15/908,525
- Filed: 2018-02-28
- Published: 2018-07-05
- Granted: 2019-11-19
- Earliest claimed: 2011-06-15
- Assignees: THE FRAZER AND CRUICKSHANK LIVING TRUST DATED Mar. 24, 1982
- Applicants: THE FRAZER AND CRUICKSHANK LIVING TRUST DATED Mar. 24, 1982
- Inventors: Missy Hayes; Gina Sacco; Nancy S. Sherwood
- Web page: https://patentgrep.com/patent/US10479704B2

## CPC

- C02F 1/285: {using synthetic organic sorbents}
- B01D 15/08: Selective adsorption, e.g. chromatography
- B01D 53/02: by adsorption, e.g. preparative gas chromatography {(solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01)}
- C09K 8/52: Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K 8/536: characterised by their form or by the form of their components, e.g. encapsulated material
- C09K 8/80: Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
- B01D 2253/202: Polymeric adsorbents
- B01D 2257/408: Cyanides, e.g. hydrogen cyanide (HCH)
- B01D 2257/60: Heavy metals or heavy metal compounds
- B01D 2257/70: Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- C02F 2101/103: {Arsenic compounds}
- C02F 2101/106: {Selenium compounds}
- C02F 2101/108: {Boron compounds}
- C02F 2101/14: Fluorine or fluorine-containing compounds
- C02F 2101/18: Cyanides
- C02F 2101/20: Heavy metals or heavy metal compounds
- C02F 2103/10: from quarries or from mining activities
- 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)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

## Abstract

The invention relates to the proppants and proppant substrates treated with active compounds that reduce the presence of contaminants in fluids, methods of using those materials, as well as methods of making those materials. The invention further provides that the contaminated fluids are associated with wells, including oil and gas wells.

## Claims

### Claim 1

A sorption composition, comprising: a substrate material and an active compound for contaminant removal incorporated into or onto the substrate material, wherein the substrate material is a particulate material selected from the group consisting of ceramic, admixtures containing ceramics, and ceramic beads and wherein the active compound is a sulfur compound selected from the group consisting of ferrous sulfide, elemental sulfur, ferric ammonium sulfate, sodium hydrosulfide, dimethyl disulfide, dithiocarbamates, aluminum sulfide, copper sulfate, copper sulfide, and copper sulfate ammoniated, wherein the sulfur content, as % S, is from 0.1 to 25 wt %.

### Claim 2 (depends on 1)

The sorption composition of claim 1, wherein the substrate material contains at least 0.1% iron.

### Claim 3 (depends on 1)

The sorption composition of claim 1, wherein the substrate material contains at least 0.1% copper.

### Claim 4 (depends on 1)

The sorption composition of claim 1, wherein the substrate material contains both iron and copper.

### Claim 5 (depends on 1)

The sorption composition of claim 1, wherein the substrate material contains oxides of copper.

### Claim 6 (depends on 1)

The sorption composition of claim 1, wherein the substrate material contains oxides of iron.

### Claim 7 (depends on 1)

The sorption composition of claim 1, wherein the substrate material is unfinished.

### Claim 8 (depends on 1)

The sorption composition of claim 1, wherein the sorption composition further comprises an ammonia compound.

### Claim 9 (depends on 8)

The sorption composition of claim 8, wherein the ammonia compound is selected from the group consisting of ferric ammonium sulfate, ammonium thiosulfate, ammonium thiocyanate, ammonium sulfate, ammonium sulfite, ammonium persulfate, and aluminum ammonium sulfate.