About Intraplex®

Intraplex® enables the installation of highly efficient PFAS adsorption barriers within a few days, with up to 98% pollutant reduction and an adsorption life of the barrier of several decades. The costs for this can be up to 70% below the costs of conventional pump & treat systems.

  • Rapid and sustained in situ PFAS immobilization.
  • Superior adsorption capacity towards PFAS.
  • Adsorption lifetimes of several decades.
  • Optimal subsurface migration during injections.
  • Independently scientifically validated
  • Highest quality carbon.
  • Certified for drinking water production.
  • Ecotoxicologically safe.
  • Field proven and made in Germany

Properties of Intraplex®

Patents DE10314489, DE10200505466
Surface area  up to 1,600 m2/g
Particle Size ~ 1,5 µm
Concentration 200 g/L colloidal wet suspension
  • activated carbon
  • water

Intraplex® Activated Charbon for PFAS Remediation

PFAS remediation places the highest demands on the in situ materials. With the Intraplex® activated charcoal, Intrapore offers a colloidally stabilized suspension that is injected directly into the contaminated aquifer.

The activated carbon in the suspension was optimized for PFAS adsorption via dedicated R&D projects. It has an extremely high surface area that has been specially conditioned for PFAS adsorption. The material has been successfully used in large-scale field applications and has been approved by the authorities under local water regulations.

To be deployed for

  • Rapid and sustained adsorption of PFAS (carboxylic and sulfonic acids) for long-term immobilization of groundwater plumes
  • Can be used in situ, as a colloidally stabilized suspension via direct push / injection into existing measuring points
  • Long-term, almost irreversible adsorption of PFAS under typical conditions.
  • Applicable for plume and source remediation

Application Example:
international airport

At the international airport, a pilot test adsorption barrier was injected across a highly PFAS contaminated groundwater aquifer. Remediation efficency was evaluated by comparing 3 inflow monitoring wells to 3 outflow wells (east, middle, west) over ~ 1 year so far. Inflow PFAS concentrations ranged, on average from~ 40 – 90 μg/L. Apart fromminor hydrogeological disturbances, a PFAS reduction efficency of ~ 95% could be achieved, starting from ~ 10.000 ng/L down to ~ 100 ng/L.

Application Example:
Stockholm international airport

At a former military airport in Germany, Intraplex® colloidal carbon was injected into a PFAS contaminated aquifer. Immediately after injection, downstream PFAS concentrations decreased from ~1.200 ng/L to < 100 ng/L. The adsorption barrier lifetime is expected to be in the range of several decade.

Independent scientific comparison

PFAS adsorption capacity

Intrapore’s specialized activated carbon for PFAS adsorption shows a vastly, and significantly higher capacity for PFOS compared to a other products.

The maximum load of Intraplex B is about 100 mg PFOS per 1 g activated carbon. The compared product has a loading of only 23 mg PFOS per 1 g activated carbon (see top Fig.).

Similarly, the adsorption coefficient, which is a measure of the quality of the adsorption, is 5 times higher with Intraplex B (see bottom Fig.).

This implies that to ensure a barrier lifetime of 10 years for PFOS, 5 times less Intraplex carbon is needed.

For less adsorbing substances like PFBA, this advantage of Intraplex B is assumed to be even more substantial and can be in the range of up to 2 – 3 orders of magnitude.

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