Antioxidant protection for ion exchange resins

Patent metadata

Field	Value
Publication number	US-11845074-B2
Application number	US-201916969548-A
Country	US
Kind code	B2
Filing date	Feb 12, 2019
Priority date	Feb 12, 2018
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

Methods of stabilizing virgin ion exchange resin material are provided. The methods include cleansing the virgin ion exchange resin material with a preparation comprising a non-ionic detergent. The methods include cleansing the virgin ion exchange resin material with a preparation comprising an alcohol solvent. The methods include rinsing virgin ion exchange resin material with deoxygenated water. the methods include introducing the cleansed/rinsed virgin ion exchange resin material into a gas impermeable vessel and hermetically sealing the vessel. The methods include introducing an oxygen scavenging material into the gas impermeable vessel, and hermetically sealing the vessel. A method of facilitating water treatment in a site in need thereof by providing a cleansed virgin ion exchange resin material in deoxygenated water is also disclosed.

First claim

The invention claimed is:

1. A method of stabilizing virgin ion exchange resin material, the method comprising:
cleansing the virgin ion exchange resin material with a preparation comprising a non-ionic detergent at a concentration below the non-ionic detergent's critical micelle concentration to produce a cleansed virgin ion exchange resin material;
introducing the cleansed virgin ion exchange resin material into a gas impermeable vessel; and
hermetically sealing the vessel.

2. The method of claim 1 , further comprising rinsing the cleansed virgin ion exchange resin material with deoxygenated water.

3. The method of claim 1 , wherein the non-ionic detergent comprises at least one of ethoxylated octyl phenol, polysorbate, polyoxyethylene and a metabolite thereof.

4. The method of claim 3 , wherein the preparation comprises less than about 0.125 g/L ethoxylated octyl phenol.

5. The method of claim 1 , comprising introducing the cleansed virgin ion exchange resin material into a liquid impermeable container of the gas impermeable vessel.

6. A method of stabilizing virgin ion exchange resin material, the method comprising:
cleansing the virgin ion exchange resin material with a preparation comprising a non-ionic detergent at a concentration below the non-ionic detergent's critical micelle concentration to produce a cleansed virgin ion exchange resin material; and
rinsing the cleansed virgin ion exchange resin material with deoxygenated water to produce a rinsed virgin ion exchange resin material.

7. The method of claim 6 , comprising rinsing the cleansed ion exchange resin material with deoxygenated water having a concentration of dissolved oxygen of less than about 10 ppb.

8. The method of claim 6 , wherein the non-ionic detergent comprises at least one of ethoxylated octyl phenol, polysorbate, polyoxyethylene and a metabolite thereof.

9. The method of claim 6 , further comprising introducing the rinsed virgin ion exchange resin material into a gas impermeable vessel and hermetically sealing the vessel.

10. A method of facilitating water treatment at a site in need thereof, the method comprising:
providing a cleansed virgin ion exchange resin material in deoxygenated water,
the cleansed virgin ion exchange resin material being a polystyrene-based ion exchange resin material and having less than about 25 ppb oxygenated total organic carbon species.

11. The method of claim 10 , further comprising providing the cleansed virgin ion exchange resin material and deoxygenated water in a liquid impermeable compartment of a hermetically sealed gas impermeable vessel.

12. The method of claim 11 , further comprising providing an oxygen scavenging material positioned between an exterior wall of the liquid impermeable compartment and an interior wall of the gas impermeable vessel.

13. The method of claim 12 , further comprising providing an indicator of oxygen contamination.

14. The method of claim 10 , comprising providing the deoxygenated water in an amount to provide between about 40% and about 50% moisture content of the cleansed virgin ion exchange resin material.

15. The method of claim 10 , comprising providing the deoxygenated water having less than about 10 ppb dissolved oxygen.

Assignees

• Evoqua Water Tech Llc

Inventors

• Bachman Gregory
• Wilkes Marty

Classifications

• B01J41/08

  Use of material as anion exchangers; Treatment of material for improving the anion exchange properties · CPC title

• B01J49/53

  for cationic exchangers · CPC title

• C02F2001/425

  using cation exchangers · CPC title

• B01J31/10 Primary

  sulfonated · CPC title

• B01J47/04

  Mixed-bed processes · CPC title