IP Library Granted Patent US 10,875,808
Granted Patent B1
US 10,875,808 · App. 16/128,994 · Granted Dec 29, 2020

Coal combustion residuals, leachate and wet ash wastes solidification devices, kits and assemblies

Inventor: Quint Barefoot (McLeansville, NC)
Assignee: STEWART SUPERABSORBENTS, LLC
C04B24/24B01J20/26B01J20/28016C04B14/104C04B18/26C04B28/021C04B28/04C04B2103/0051C04B2111/00767C04B2201/50
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Quick Facts
Patent No.
US 10,875,808
App. No.
16/128,994
Granted
Dec 29, 2020
Kind
B1
Abstract

Environmental waste solidification devices, system, kits and methods are shown and described. Absorbent compositions for solidification of environmental wastes are shown and described. In one example, the composition includes an amount of sodium polyacrylate polymer mixed with another non-polymeric particle, useful for waste solidification.

Claims (14)

1. A system for solidification of moistened Coal Ash, comprising

an amount of superabsorbent polymer (SAP) able to solidify an amount of given Coal Ash from a slurry to a solidified state able to pass a Paint Filter Test,

an amount of bentonite,

an amount of cement,

wherein the SAP, the bentonite, and the cement form a blend including about 50% SAP, about 25% Bentonite, and about 25% Portland cement.

2. A system for solidification of moistened Coal Ash, comprising:

an amount of superabsorbent polymer (SAP) able to solidify an amount of given Coal Ash from a slurry to a solidified state able to pass a Paint Filter Test,

an amount of bentonite,

an amount of cement,

wherein the SAP, the bentonite, and the cement form a blend including between about 70-80% SAP, between about 5-10% bentonite, and between about 5-10% cement.

3. The system of claim 2 including between about 5-10% wood flour.

4. The system of claim 1 wherein the amount of SAP is contained in a pellet form.

5. The system of claim 1 wherein the SAP is cross-linked internally and on its surface.

6. The system of claim 1 wherein the amount of SAP is contained inside a water soluble packet.

Assignments (4)
RELEASE OF SECURITY INTEREST IN PATENT COLLATERAL, RECORDED ON NOVEMBER 17, 2023 AT REEL 065597, FRAME 0771 Recorded Apr 22, 2025
From: ANTARES CAPITAL LP, AS COLLATERAL AGENT
To: CHASE CORPORATION; NEPTCO INCORPORATED; NUCERA SOLUTIONS LLC; STEWART SUPERABSORBENTS, LLC
Reel/Frame 070906/0753 →
GRANT OF SECURITY INTEREST IN PATENT RIGHTS Recorded Apr 22, 2025
From: CHASE CORPORATION; NEPTCO INCORPORATED; NUCERA SOLUTIONS LLC; STEWART SUPERABSORBENTS, LLC
To: MORGAN STANLEY SENIOR FUNDING, INC., AS COLLATERAL AGENT
Reel/Frame 070909/0765 →
SECURITY INTEREST Recorded Nov 17, 2023
From: CHASE CORPORATION; NEPTCO INCORPORATED; NUCERA SOLUTIONS LLC; STEWART SUPERABSORBENTS, LLC
To: ANTARES CAPITAL LP, AS COLLATERAL AGENT
Reel/Frame 065597/0771 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 3, 2018
From: BAREFOOT, QUINT
To: STEWART SUPERABSORBENTS, LLC
Reel/Frame 047659/0550 →
Continuity (1)
Provisional Application 62557236 · Sep 12, 2017