Ivey International Inc.

- Surfactant Technology

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During in-situ and ex-situ remediation of contaminated soil or water the greatest limiting factor for all forms of remediation is contaminant sorption (i.e., absorption and or adsorption). If we can overcome contaminant sorption, we can significantly improve all forms of soil and water remediation, reducing the treatment costs and duration.

Ivey-sol Surfactant Technology is comprised of several patented and preparatory non-ionic surfactant formulations that have the unique ability to selectively desorb and liberate sorbed (i.e., absorbed and adsorbed) petroleum hydrocarbons (LNAPL), chlorinated solvents (DNAPL), and certain heavy metal contaminants from soil and fractured bedrock surfaces. The addition of Ivey-sol to the substrate can aid in the controlled de-sorption of the contaminants making them more 'available* for treatment. Ivey-sol makes the contaminants more miscible in the aqueous phase allowing for their improved mass recovery and/or improved treatment by many other remediation techniques. Three Ivey-sol application processes were developed for enhancing in-situ and ex-situ air, soil and groundwater site remediation. They are as follows:

SER Surfactant Enhanced Remediation. In-situ and ex-situ application processes to liberate contaminants making them more ‘hydraulically-available’ for mass removal and/or treatment. SERTM improves in-situ pump and treatment, and/or ex-situ soil washing type applications by >400%. This process could also be used for tank cleaning, vapour suppression, and oil recovery from oil sands or shale oil.

SEB Surfactant Enhanced Bioremediation. In-situ and ex-situ application processes to liberate contaminants making them more bio-available' for microbial (bacteria) degradation. SEB improves both in-situ and/or ex-situ bioremediation treatment by 40 to 60% or more. Applicable for both warm and cold temperature/climate site applications.

SEC Surfactant Enhanced Chemicalization. In-situ and ex-situ application processes to liberate contaminants making them more ‘chemically-available’ for chemical degradation. SEC improves the availability of the contaminants to the chemical reagents employed to affect in-situ and or ex-situ chemical, bio-chemical and/or enzymatic degradation improving the associated degradation rate of target compounds. This process may also be modified for application with chemical reducing agents in reductive debromination, dechlorination and deflorination treatment process win soil and groundwater regimes.

The sorption of contaminates onto solids (i.e., soil, sediments, bedrock, sludge, drilling cuttings, oil sands and oil shales) is considered the principal limiting factor in the effectiveness of most treatment technologies. This coupled with complex chemistry, geology and hydrogeology only further complicates matters.

When HOC (hydrophobic organic compounds) like petroleum product, are absorbed on a soil grain, water alone will not remove it from the surface. This is a function of the hydrophobic characteristics of the HOC, which repels the water at its surface and its inherent low water solubility. With the addition of Ivey-sol surfactants, the Ivey-sol® hydrophobic grouping is repelled by the water but attracted to the HOC on the surface. At the same time, the Ivey-sol hydrophilic grouping is attracted to the water molecules. These opposing forces loosen the HOC from the surface of the soil matrix and suspend it in the water phase. Once dissolved, the suspended HOC is more 'hydraulically-available' for Pump and Treatment (P&T), more 'bio-available' to the microbial population present, and more 'chemically-available' for oxidation or reduction reactions. Once liberated in low concentration in a 'surfactant-aqueous HOC microscopic outward appearance, it is more 'available* for treatment by most, if not all, forms of in-situ and ex-situ remediation treatment technologies.

Surfactant enhanced remediation involves the use of surfactant formulations to selectively desorb and dissolve target contaminates from the solid to liquid phase. In addition, the surfactants lower the surface tension of water from 72 dynes to <30 dynes increasing the wetting and permeability properties of water in fine grain soil (i.e., clay and silt) and bedrock fractures. The surfactants affect the sorption of HOC at the solid-liquid interface (i.e., the surface–H2O–NAPL interface). As a result, the surfactants increase the contaminate miscibility and improved ‘availability’ for rapid and cost effective treatment.

Market Applications (General): Petroleum (Oil & Gas) Industry, Chemical and Petrochemical, Utility and Energy, Commercial and Industrial Manufacturing, Government, Real Estate Development, Industrial Cleaning, Free Product Removal and Green Technology and Sustainable Environmental Initiatives etc.

Market Applications (Specific): Air, Soil and Water Remediation, Oil Recovery (Oil Sands), Tank Cleaning, Bioremediation (In-situ and Ex-situ), Waste Water Treatment, Pump and Treatment, Improving Chemical Oxidation, Off-shore Spill Dispersant, Shoreline Clean-up, Vapour Suppression, Soil Washing, Degreaser, Biodegradable Solvent/Cleaner, etc.

Advantages and Effectiveness of Ivey-sor products:

  1. They are non-toxic and biodegradable, so they do not persist in the environment after application
  2. Improves contaminant mass recovery for in-situ Pump and Treatment (P&T) by >400 to 800% or more, for LNAPL and DNAPL contamination
  3. Improves in-situ and ex-situ soil and water bioremediation by 40 to 60% or more: iv)Improves chemical oxidation by 40% to 80%, and reduces the mass of oxidant required and associated treatment period
  4. Does not negatively affect water treatment systems (i.e.. O/W Separators, GAC, Air
  5. Stripping, Membrane Separation, Bio-reactors, etc.). vi)Non-toxic to bacteria, so it can aid and/or improve natural attenuation
  6. Reduces required treatment times when used in conjunction with other remediation technologies (i.e., Pump and Treat, Bioremediation, Chemical Oxidation/Reduction, etc.)
  7. Works well with duel phase extraction, vacuum extraction, and conventional P&T  ix)Works well in fine grain soils (i.e., silty sand, silt, silty clay, clay and fractured bedrock)
  8. Does not generate additional operation and maintenance (O&M) issues
  9. Applicable for the full range of LNAPLs, has been demonstrated to be very effective on most DNAPL contaminants, and several heavy metals
  10. Can be applied to saturated and/or unsaturated zone and xiii)     Works well with other in-situ and ex-situ remediation technologies (1+1=3).

  • Improves all forms of in-situ and ex-situ air, soil and water remediation technologies.
  • Achieves rapid and cost effective pollution destruction with low concentration applications.
  • Effective for Petroleum Hydrocarbons, Chlorinated Compounds, Pesticides, and Organo-metallics.
  • Biodegradable and does not persist in environment after use.

Typical costs savings for in-situ and ex-situ applications typically range between 25 to 50% or more over many alternative remediation options. The actual costs (in-situ/ex-situ) will vary depending on soil type, concentration and type of contamination, site conditions, available resources, and the regulatory clean-up objectives to be achieved. Significant time savings given most in-situ P&T sites would take 5 to 7 years to remediate, but with Ivey-sol® are usually complete in less than 1 year with many completed in months.

Effective for treating and improving remediation of Petroleum Hydrocarbons (Gasoline, Diesel, Lubricants, Bunker-C), Chlorinated Compounds (PCB, PCP, CET, PET), Pesticides and Herbicides, Organo-metallics (Tetra-ethyl lead), and NORM (Naturally Occurring Radioactive Materials).

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