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US 2024/0228738 A1Published application
Pac-based cap layers and compositions
AssigneeJ.F. Brennan Co., Inc.
InventorsANDREW TIMMIS, GREG SMITH, TYLER LEE, SAM CRAWFORD, DUSTIN BAUMAN
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Abstract
Disclosed are novel cap layer compositions comprising: (a) an organic adsorption ingredient; (b)a non-organic silica carrier ingredient; and (c) an organic polymer delivery ingredient, wherein the cap layer composition is made by blending ingredients (a) through (c) in an integrated blending and delivery apparatus, the cap layer composition for use in an area in need of remediation.
Claims34
A cap layer composition comprising:
- (a) an organic adsorption ingredient;
- (b) a non-organic silica carrier ingredient;
- and
- (c) an organic polymer delivery ingredient,
- wherein the cap layer composition is made by blending ingredients (a) through (c) in an integrated blending and delivery apparatus, the cap layer composition for use in an area in need of remediation.
2 more elements
A cap layer composition comprising:
- (a) a dry activated carbon (“AC”) ingredient, the dry AC ingredient comprises about 0.03% to 20% of a total dry weight of a capping composition layer formed from the cap layer composition;
- (b) a dewatered semi-slurry sand ingredient, the dewatered semi-slurry sand ingredient comprises about 75% to 99.5% of the total dry weight of the capping composition layer formed from the cap layer composition;
- and
- (c) a dry organic polymer delivery ingredient, the dry organic polymer delivery ingredient is selected from the group consisting of guar gum and analogues, xanthan gums and analogues, zen gums and analogues, and polydopamine (PDA), the dry organic polymer delivery ingredient comprises about 0.03% to 1% of the total dry weight of the capping composition layer formed from the cap layer composition;
- wherein either:
- (1) the dry AC ingredient, the dewatered semi-slurry ingredient, and the dry organic polymer delivery ingredient are blended by an integrated blending and delivery apparatus on-site in a vessel at or near an area in need of remediation, or
- (2) the dry AC ingredient and the organic polymer delivery ingredient are blended to form a mixture at an off-site location away from an area in need of remediation, and the mixture is then blended with the dewatered semi-slurry ingredient in an integrated blending and delivery apparatus on-site in a vessel at or near the area in need of remediation.
4 more elements
A cap layer composition comprising:
- (a) a dry powdered activated carbon (“PAC”) adsorption ingredient, the dry PAC adsorption ingredient comprises about 0.03% to 20% of a total dry weight of a capping composition layer formed from the cap layer composition, and the dry PAC adsorption ingredient comprises a plurality of dry PAC particles, each having a particle size in the range of about 43-74 microns;
- (b) a dewatered semi-slurry sand ingredient, the dewatered semi-slurry sand ingredient comprises about 75% to 99.5% of the total dry weight of the capping composition layer formed from the cap layer composition and the dewatered semi-slurry sand ingredient comprises a plurality of dewatered semi-slurry sand particles, each having a particle size in the range of about 150-250 microns;
- and
- (c) an organic polymer delivery ingredient picked from either an unmodified guar gum ingredient or a modified guar gum ingredient, the organic polymer delivery ingredient comprises about 0.03% to 1% of the total dry weight of the capping composition layer formed from the cap layer composition and the organic polymer delivery ingredient comprises a plurality of organic polymer delivery ingredient particles, each having a particle size in the range of about 43-74 microns.
1 more element
Dependencies are inferred from the claim text.