IP Library Granted Patent US 11,845,074
Granted Patent B2
US 11,845,074 · App. 16/969,548 · Granted Dec 19, 2023

Antioxidant protection for ion exchange resins

Inventors: Gregory Bachman (Loves Park, IL); Marty Wilkes (Roscoe, IL)
Assignee: Evoqua Water Technologies LLC
B01J49/60B01J47/14B01J49/53C02F1/42C02F2001/425
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Quick Facts
Patent No.
US 11,845,074
App. No.
16/969,548
Granted
Dec 19, 2023
Kind
B2
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.

Claims (22)

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.

Assignments (2)
RELEASE OF SECURITY INTEREST Recorded May 26, 2023
From: JPMORGAN CHASE BANK N.A., AS COLLATERAL AGENT
To: EVOQUA WATER TECHNOLOGIES LLC; NEPTUNE BENSON, INC.
Reel/Frame 063787/0943 →
SECURITY INTEREST Recorded Apr 7, 2021
From: EVOQUA WATER TECHNOLOGIES LLC; NEPTUNE BENSON, INC.
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Reel/Frame 055848/0689 →
Continuity (2)
Provisional Application 62629267 · Feb 12, 2018
Related Publication 20210001323A1 · Jan 7, 2021