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US 7,976,241 B2Granted
Soil remediation method and composition
AssigneeVeruTEK Technologies, Inc.
InventorsGeorge E. Hoag, John Collins
Life of this patent
Estimating the term…
Abstract
A method for in-situ reduction of contaminants in soil.
Claims59
A method for reducing the concentration of a contaminant in a soil, comprising:
- introducing an oxidant and a surfactant into a subsurface containing the soil;
- allowing the surfactant to solubilize or desorb the contaminant;
- and
- allowing the oxidant to oxidize the solubilized contaminant in the subsurface, so that the amount of the contaminant in the soil is substantially reduced,
- wherein the overall rate of oxidization of the contaminant is controlled to a predetermined value and the overall rate of solubilization of the contaminant is controlled to a predetermined value by selecting the oxidant and surfactant and adjusting the concentrations of the surfactant and oxidant, so that the rate of oxidation of the contaminant is greater than, less than, or equal to the rate of solubilization of the contaminant,
- wherein at least 40% of the initial mass of contaminant is destroyed in situ in the subsurface,
- wherein the surfactant resists oxidation by the oxidant, and the surfactant increases oxidation of the contaminant, and
- wherein the contaminant comprises a nonaqueous phase liquid (NAPL).
5 more elements
A method for reducing the concentration of a contaminant in a soil, comprising:
- introducing an oxidant and a surfactant into a subsurface containing the soil;
- introducing an antioxidant into the subsurface containing the soil;
- allowing the surfactant to solubilize or desorb the contaminant;
- and
- allowing the oxidant to oxidize the solubilized contaminant in the subsurface, so that the amount of the contaminant in the soil is substantially reduced,
- wherein the overall rate of oxidization of the contaminant is controlled to a predetermined value and the overall rate of solubilization of the contaminant is controlled to a predetermined value by selecting the surfactant, oxidant, and antioxidant and adjusting the concentrations of the surfactant, oxidant, and antioxidant, so that the rate of oxidation of the contaminant is greater than, less than, or equal to the rate of solubilization of the contaminant and
- wherein the surfactant resists oxidation by the oxidant.
4 more elements
A method for reducing the concentration of a contaminant in a soil, comprising:
- introducing an oxidant and a surfactant into a ground surface or above-ground formation, structure, or container containing the soil;
- allowing the surfactant to solubilize or desorb the contaminant;
- and
- allowing the oxidant to oxidize the solubilized contaminant, so that the amount of the contaminant in the soil is substantially reduced,
- wherein the overall rate of oxidization of the contaminant is controlled to a predetermined value and the overall rate of solubilization of the contaminant is controlled to a predetermined value by selecting the oxidant and surfactant and adjusting the concentrations of the oxidant and surfactant, so that the rate of oxidation of the contaminant is greater than, less than, or equal to the rate of solubilization of the contaminant,
- wherein at least 40% of the initial mass of contaminant is destroyed in situ in the ground surface or above-ground formation, structure, or container,
- wherein the surfactant resists oxidation by the oxidant, and the surfactant increases oxidation of the contaminant, and
- wherein the contaminant comprises a nonaqueous phase liquid (NAPL).
5 more elements
Dependencies are inferred from the claim text.