Experts in Phytoremediation

Phytoremediation Applications

  • Soil
    • Contaminant degradation/removal/attenuation
  • Groundwater
    • Contaminant degradation/removal
    • Hydraulic Control/Mitigation
    • Plume Control/Mitigation

Phytoremediation Mechanisms

  • Increased microbial activity/enhanced natural attenuation
  • Degradation in the rhizosphere/area of the root system (Rhizodegradation)
  • Direct uptake and in-plant degradation (Phytodegradation)
  • Photodegradation (transpiration during daylight hours) – e.g. 1,4-Dioxane
  • Plume control via hydraulic influence

Target Contaminants

  • In general, any soluble compound in soil solution & groundwater
    • Most VOCs (e.g. petroleum & chlorinated most common)
    • Agricultural Inorganics (e.g. Nitrate & Ammonium)
    • Solubilized Metals (e.g. Boron- bioaccumulation)
    • Perfluorooctanesulfonic Acid (PFOA) & perfluoroalkyl substances (PFAS) ? (re: recent research)
  • Semi-Volatile Organics via enhanced microbial degradation

Traditional Approach to Phytoremediation

Conventional, or non-engineered

  • Conventional planting to treat affected soil and groundwater via:
  • Applications typically limited to:
    • shallow soil & groundwater
      • restricted root development (species/lithology)
      • annual rainfall limiting deep rooting,
    • low contaminant concentrations
      • phytotoxicity

ANS’ Trademarked & Patented Approach to Phytoremediation

Constructed, or engineered

  • TreeMediation® Program
    • designed and constructed system to control plant growth, manage site conditions and target the zone for remedial effect
  • TreeWell® Technology
    • Expanded opportunities: deep groundwater, targeted horizons, high contaminant concentrations
  • Phyto-Integrated™ Remediation Systems
    • Combining phytoremediation with other technologies

Phyto-Integrated Remediation Systems – General Benefits

  • Lower Costs
    • Lower installation costs vs most other engineered systems
    • Lower maintenance costs vs other engineered systems and traditional phyto
    • Substantially lower lifetime costs
  • Effectiveness improves with time
  • Aesthetically pleasing
  • Adaptable to a large range of settings, contaminants and contaminant levels