Soil remediation by permanganate oxidation
First Claim
1. A method for remediating contaminants in soil and groundwater by chemical oxidation with the permanganate ion, comprising the steps of:
- a. introducing a predetermined amount of permanganate into the soil above or below the water table, and b. introducing an alkaline earth metal base of calcium and/or magnesium into the soils above or below the water table, and c. mixing said permanganate and alkaline earth metal base into the soils to achieve a post treatment soil pH value in the range of 9.3 to 12.4 S.I.
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Accused Products
Abstract
The permanganate ion and an alkaline earth metal base of calcium and/or magnesium are distributed into the soil by a means of mechanical mixing to destroy contaminants in the soil and groundwater by chemical oxidation. The disclosed method produces a stable, post-treatment, manganese dioxide precipitate that does not adversely effect the ground water with high dissolved manganese concentrations. The permanganate salts may include potassium, magnesium or sodium permanganate, and the preferred alkaline earth metal bases may include calcium oxide, calcium hydroxide, magnesium oxide and magnesium hydroxide. Dolomite quick lime may be used to supply an inexpensive source of the desired calcium and/or magnesium base. The calcium and/or magnesium base may be added before, during or after the addition of the permanganate salt.
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Citations
12 Claims
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1. A method for remediating contaminants in soil and groundwater by chemical oxidation with the permanganate ion, comprising the steps of:
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a. introducing a predetermined amount of permanganate into the soil above or below the water table, and b. introducing an alkaline earth metal base of calcium and/or magnesium into the soils above or below the water table, and c. mixing said permanganate and alkaline earth metal base into the soils to achieve a post treatment soil pH value in the range of 9.3 to 12.4 S.I. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification