nZVI technology summary

About technology:

nZVI – nanoscale Zero Valent Iron,
Elemental iron (Fe⁰) nanoparticle suspension (sol),
With a strong tendency to oxidation, high reducing power,
Ability to split carbon-halogen bonds in pesistent compounds,
The final products are an inorganic halogenids and rapidly decomposing hydrocarbon fragments: significantly reduced the risk!,
Nano-scale grain size range, 1 nm = 10^-9 m. (the diameter of human hair is 80000 nm!),
Small particles→ high specific surface → high reactivity,
Move in the pore space with water molecules, high mobility and penetrating ability,
Eco-toxicity cannot be detected.

Mobile production equipment:

Application:

Breakdown of persistent, halogenated hydrocarbon compounds in subsurface environment (soil and groundwater contamination),
Targeted and effectively delivered into the pore space with in situ technology (ie. direct-push injection),
Main application for high concentration plume, and former source zones,
Combinable with anaerobic microbiological degradation methods (eg. reductive de-chlorination) in case of low concentration plume area.

Officially certified treatable contaminants (field applications, experience):

Chlorinated aliphatic hydrocarbons (CAHs):
- Chloroethylenes (PCE, TCE, DCE, VC)
- Chloroethanes (TCA, DCA, CA)
- Chloromethanes (CM, DCM, CF, CT)
Chlorinated aromatic hydrocarbons:
- Chlorobenzenes (MCB, DCB, TCB, TeCB, PeCB, HeCB)
- Chlorophenols (MCP, DCP, TCP, TeCP, PCP)

Potentially treatable pollutants (literature experiments):