Electron acceptors

Stimulation of aerobic degradation

Aerobic degradation of organic contaminants such as petroleum products requires the presence of an electron acceptor. In locations where installation of an air-sparging or bioventing system is not possible, QM Environmental International can provide a solution with its products.

Adding electron acceptors in soil and groundwater is useful in biological remediation because it stimulates the breakdown of contaminants by microorganisms. In biological remediation, bacteria and other microorganisms convert pollutants into harmless or less harmful components. This process occurs more efficiently when sufficient electron acceptors, such as oxygen or sulfate, are present.

Electron acceptors

How do they work?

Electron acceptors act as “receivers” in the respiratory processes of the microorganisms. Without these acceptors, the microorganisms can function less effectively or sometimes not at all. By adding electron acceptors to soil and groundwater, we create an environment in which microorganisms thrive better and their natural decomposition processes can occur more quickly and completely. This can significantly reduce remediation time and lower the cost and impact of remediation, contributing to more sustainable and efficient remediation of contaminated sites.

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Concentrated & Effective

Electron acceptor products

QM Environmental International supplies two electron acceptor products. These are high-quality products that can be used in soil remediation where traditional methods of aeration are too expensive or difficult to achieve.

EOx™

Granular powder of calcium peroxide that provides a slow, stable oxygen supply for long-term aerobic biodegradation. EOx™ is a proven technology that enhances aerobic degradation of a wide range of contaminants.

Applications:

  • Ex-situ remediation
  • In -situ remediation
    • Excavation wells
    • Injection through infiltration filters
    • Direct Push Injections
  • Biodegradation of:
    • BTEX
    • PAHs
    • Diesel Oil
    • MTBE
    • Vinyl Chloride
    • and other complex contaminants

Benefits of EOx™ use:

  • Releases oxygen slowly (usually between 9 and 12 months) to promote long-term aerobic biodegradation
  • Most competitive form of calcium peroxide on the market
  • Powdered material without inert fillers
  • Increases pH
  • Delivers 17% (w/w) oxygen

EOx™ is available in:

  • 25 Kg Buckets
  • 400 Kg IBCs

EOx™ is classified as a hazardous substance, hazard class 5.1, packing group II.

EAS®

EAS® provides sulfate to stimulate the biodegradation of hydrocarbons by sulfate-reducing bacteria in groundwater with a strong negative redox potential.

Benefits of EAS®

  • Aqueous solution for easy injection and distribution in soil
  • Enriched with nutrients
  • Increases the pH
  • Exceptional for remediation of hydrocarbon contaminants in saturated zones with a negative redox potential
  • Technology proven and published by BP, Arcadis, Parsons, Antea Group
  • Extremely effective for the breakdown of:
    • Toluene
    • Ethylbenzene
    • Xylenes

EAS® Applications

  • Direct injection
  • Excavations
  • Surface applications

EAS® is available in:

  • 208 L drums
  • 1040 L IBCs

Want more information about our electron acceptor products?