Oxidation Systems, Inc

Since our inception, Oxidation Systems has been focused on providing high-quality equipment and services for in-situ chemical oxidation of contaminated sites. We design, build, and lease ozone generating systems for treating contaminated soil and groundwater. We offer an experienced and well-trained staff that is knowledgeable in the use of chemical oxidation for the remediation of contaminated soil and groundwater.

Once the appropriate technology has been selected, we work with you to design and specify the appropriate equipment for your application. Our expertise also includes the use of potassium permanganate, hydrogen peroxide, and Fenton's Reagent for site remediation.

Oxidation Systems offers rental equipment, design capabilities, operational expertise, and a fabrication shop that can build any chemical oxidation system to meet your requirements.

We have a significant inventory of rental equipment, including the following:

• Skid-mounted ozone generators
• Trailer-mounted ozone pilot testing system
• Potassium permanganate injection trailer
• Hydrogen peroxide metering system (trailer-mounted)

WHO WE ARE

Oxidation Systems, Inc. is a recognized leader in the use of chemical oxidation technologies for soil and groundwater remediation. We have expertise with ozone, hydrogen peroxide, potassium permanganate, Fenton’s reagent, and advanced oxidation processes. Our growth and reputation have been built by offering our customers innovative approaches to their environmental problems.

We offer the following services:

• Treatability Testing
• Start-Up Services
• Repair and Maintenance
• Training
• Rental Equipment

PERMANGANATE

Potassium and Sodium Permanganate

Permanganate is an oxidizing agent with an affinity for oxidizing organic compounds containing carbon-carbon double bonds, aldehyde groups or hydroxyl groups. The permanganate ion is strongly attracted to the electrons in carbon-carbon double bonds, such as those found in chlorinated alkenes. Under normal subsurface pH and temperature conditions, the carbon-carbon double bond of alkenes is broken and the unstable intermediates are converted to carbon dioxide through either hydrolysis or further oxidation by the permanganate ion. Permanganate can also be used to treat organic compounds that contain hydroxyl functional groups such as primary and secondary alcohols, as well as some organic acids such as phenol. These oxidation reactions occur best at higher pH values where hydrogen abstraction creates a negative charge on the oxygen atom.

Manganese dioxide (MnO2) is a natural mineral already found in the soils in many parts of the country. If the precipitation of manganese dioxide in the soils is excessive, it can reduce the permeability of the soil, thus limiting injection of the aqueous oxidant. Bench-scale and Soil Oxidant Demand testing by Oxidation Systems can identify potential problems with in-situ chemical oxidation and allow design modifications to be made before field-scale implementation occurs.

Hydrogen Peroxide

Hydrogen peroxide, which can be delivered at depth using lance permeation or soil mixing techniques or injected water amendments, is an effective oxidizing agent. However, to achieve the desired contaminant reductions in a reasonable time, a metal catalyst is often required. Iron is most commonly used, and, when mixed with hydrogen peroxide, the catalyst is known as Fenton’s reagent.

The process is well documented for producing hydroxyl radicals by the reaction of hydrogen peroxide and ferrous iron (Fe⁺² ). The hydroxyl radicals (OHC) serve as very powerful, effective, and nonspecific oxidizing agents, second only to fluorine in oxidizing power. Many reactions occur during the oxidation of a contaminant, and either ferrous or ferric iron can react with the peroxide to produce oxidizing radicals. The usefulness of Fenton’s reagent may be limited by low soil permeability, incomplete site delineation, subsurface heterogeneities, and highly alkaline soils where carbonate ions are free radical (hydroxyl) scavengers.

Fenton's Reagent

Hydrogen peroxide, which can be delivered at depth using lance permeation or soil mixing techniques or injected water amendments, is an effective oxidizing agent. However, to achieve the desired contaminant reductions in a reasonable time, a metal catalyst is often required. Iron is most commonly used, and, when mixed with hydrogen peroxide, the catalyst is known as Fenton’s reagent.

The process is well documented for producing hydroxyl radicals by the reaction of hydrogen peroxide and ferrous iron (Fe⁺² ). The hydroxyl radicals (OHC) serve as very powerful, effective, and nonspecific oxidizing agents, second only to fluorine in oxidizing power. Many reactions occur during the oxidation of a contaminant, and either ferrous or ferric iron can react with the peroxide to produce oxidizing radicals. The usefulness of Fenton’s reagent may be limited by low soil permeability, incomplete site delineation, subsurface heterogeneities, and highly alkaline soils where carbonate ions are free radical (hydroxyl) scavengers.