US5591118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low permeability waste containment construction and composition containing granular activated carbon and method of making
Assignee: Individual
•
Filing: 1993-11-12
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Granted: 1997-01-07
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Expires: 2013-11-12
Abstract
Abstract A low permeability waste containment structure includes a clay-containing component such as bentonite in combination with an effective amount of granular activated carbon to retard the migration of organic and inorganic contaminants through the waste material containment construction. The granular activated carbon can be added in amounts up to 20% or more without degrading the physical characteristics of the waste material containment structure.
Inventors
- 👤 Barnes R. Bierck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:40
CPC Classifications
B; B09; B09B; B09B1/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
117 words
In a low permeability containment structure composition for containment of waste material including inorganic and organic contaminants wherein the low permeability containment structure composition includes at least a clay component, the improvement comprising said composition further comprising about 2% by weight of a granular activated carbon based on a weight of said structure as an additive to said composition for retarding migration of said organic and inorganic contaminants through said containment structure, wherein said additive-containing composition has a permeability that approximates a permeability of said composition including at least said clay component without said additive; and said additive-containing composition approximates the bulk density and slumping of said composition including at least said clay component without said additive.
Claim 2
Dependent Claim
117 words
In a low permeability containment structure composition for containment of waste material including inorganic and organic contaminants wherein the low permeability containment structure composition includes at least a clay component, the improvement comprising said composition further comprising about 2% by weight of a granular activated carbon based on a weight of said structure as an additive to said composition for retarding migration of said organic and inorganic contaminants through said containment structure, wherein said additive-containing composition has a permeability that approximates a permeability of said composition including at least said clay component without said additive; and said additive-containing composition approximates the bulk density and slumping of said composition including at least said clay component without said additive.
Claim 3
Dependent Claim
19 words
The composition of claim 1 wherein said granular activated carbon has a size ranging between 50 and 200 mesh.
Claim 4
Dependent Claim
125 words
In a method of containing waste material using an engineered low permeability containment structure, wherein said engineered low permeability containment structure contains at least a clay component, the improvement comprising about 2% by weight of granular activated carbon based on a weight of said containment structure as an additive to said low permeability containment structure to retard migration of inorganic and organic contaminants from said waste material through said containment structure, wherein the additive-containing low permeability containment structure has a permeability approximating a permeability of said low permeability containment structure containing at least said clay component without said additive, and said additive-containing low permeability containment structure has a bulk density approximating said low permeability containment structure including at least said clay component without said additive.
Claim 5
Dependent Claim
125 words
In a method of containing waste material using an engineered low permeability containment structure, wherein said engineered low permeability containment structure contains at least a clay component, the improvement comprising about 2% by weight of granular activated carbon based on a weight of said containment structure as an additive to said low permeability containment structure to retard migration of inorganic and organic contaminants from said waste material through said containment structure, wherein the additive-containing low permeability containment structure has a permeability approximating a permeability of said low permeability containment structure containing at least said clay component without said additive, and said additive-containing low permeability containment structure has a bulk density approximating said low permeability containment structure including at least said clay component without said additive.
Claim 6
Dependent Claim
118 words
In an engineered low permeability containment system including a clay component for containing waste material including inorganic and organic contaminants, the improvement comprising said low permeability containment structure including about 2% by weight of a granular activated carbon based on a weight of the total containment system as an additive to retard migration of said organic and inorganic contaminants through said containment system, wherein said additive-containing containment system has a permeability that approximates permeability of said containment system including at least said clay component without said additive, and said additive-containing containment system has a bulk density and slumping that approximates the bulk density and slumping of said containment system including at least said clay component without said additive.
Claim 7
Dependent Claim
118 words
In an engineered low permeability containment system including a clay component for containing waste material including inorganic and organic contaminants, the improvement comprising said low permeability containment structure including about 2% by weight of a granular activated carbon based on a weight of the total containment system as an additive to retard migration of said organic and inorganic contaminants through said containment system, wherein said additive-containing containment system has a permeability that approximates permeability of said containment system including at least said clay component without said additive, and said additive-containing containment system has a bulk density and slumping that approximates the bulk density and slumping of said containment system including at least said clay component without said additive.
Claim 8
Dependent Claim
20 words
The containment system of claim 4 wherein said granular activated carbon has a size ranging between 50 and 200 mesh.
Claim 9
Dependent Claim
22 words
The containment system of claim 4 wherein said low permeability containment system comprises a soil-bentonite slurry wall surrounding said waste material laterally.
Claim 10
Dependent Claim
21 words
The low permeability containment system of claim 4 wherein said low permeability containment structure comprises a liner enclosing said waste material.
Claim 11
Dependent Claim
20 words
The containment system of claim 6 wherein said soil-bentonite slurry wall includes up to 5% of said granular activated carbon.
Claim 12
Dependent Claim
25 words
The method of claim 3 wherein said granular activated carbon additive is used in an engineered low permeability containment structure comprising a soil-bentonite slurry wall.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-07 | 2000-07-08 | 2001-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-07 | 2004-07-08 | 2005-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-07 | 2008-07-08 | 2009-01-07 | $7700.00 | Window Closed / Lapsed |