Groundwater Remediation

Reductive Technologies Based on Nanoscale Zero-valent Iron
Highly efficient in removal of
  • Inorganic compounds like Arsenic, Barium, Chromium, Selenium, Uranium, Copper, Lead, Cadmium, Mercury, Nickel (and many other heavy metals), sulphates, nitrates,perchlorates, etc.
  • Organic compounds like polychlorinated methanes, ethanes, ethenes, benzenes, etc
Properties of fe0 nanoparticles
  • High redox potential (electron donor)
  • High surface area (20-25 m2/g)
  • Narrow particle size distribution (average of 50 nm) allowing the particles to migrate in groundwater conditions
  • Pyrophoric or air-stable character (powder or aqueous dispersion)
  • Magnetically separable
  • High-reactivity and long-term performance
  • Possibility to combine various properties in composite materials
  • Ideal for remediation of large areas or for construction of permeable reactive barriers
  • Environmentally friendly material
  • Low cost comparing to conventional technologies
Application example
in field application of the reductive barrier at MaRS SVRATKA (czech republic) in 2012-2014)

Concentration of CIE day 0

Concentration of CIE day 180

Available products

  • Fe0 nanoparticles (powder) without surface modification
  • Highly reactive and pyrophoric Fe0 nanoparticles

  • Aqueous dispersion of Fe0 nanoparticles modified by biodegradable organic stabilizer
  • Highly reactive with large scale of pollutants
  • Excellent migration properties

  • Surface-stabilized Fe0 nanoparticles (powder)
  • Safe storage, transport, handling and applications compared to non-stabilized Fe0 nanoparticles
  • When activated, the Fe0 nanoparticles are highly reactive with reducible pollutants
  • Possibility to combine with biodegradable organic stabilizer for better migration performance

Fe0-based composites
  • Micro-Fe0 & nano-Fe0 composite material combining long-term reactivity of microparticles with rapid effect of nanoparticles
  • Nano-Fe0 & carbon composite material combining reductive/magnetic properties of Fe0 nanoparticles with sorption properties of carbon (active carbon, carbon black, nanotubes, biochar etc.)

And much more...
  • We are able to offer custom modified Fe-based nanomaterials
  • Any additional information on request

Application references
Scientific references
  • Soukupova, J. et al. Highly concentrated, reactive and stable dispersion of zero-valent iron nanoparticles: Direct surface modification and site application. Chemical Engineering Journal 262, 813-822, 2015
  • Sharma, V. K. et al. Ferrates: Greener Oxidants with Multimodal Action in Water Treatment Technologies. Accounts of Chemical Research 48, 182-191, 2015
  • Jarosova, B. et al. Can zero-valent iron nanoparticles remove waterborne estrogens? Journal of Environmental Management 150, 387-392, 2015
  • Prucek, R. et al. Ferrate(VI)-Prompted Removal of Metals in Aqueous Media: Mechanistic Delineation of Enhanced Efficiency via Metal Entrenchment in Magnetic Oxides. Environmental Science & Technology, 49, 2319-2327, 2015
  • Filip, J. et al. Anaerobic Reaction of Nanoscale Zerovalent Iron with Water: Mechanism and Kinetics. Journal of Physical Chemistry C 118, 13817-13825, 2014
  • Prucek, R. et al. Ferrate(VI)-Induced Arsenite and Arsenate Removal by In Situ Structural Incorporation into Magnetic Iron(III) Oxide Nanoparticles. Environmental Science & Technology 47, 3283-3292, 2013
  • Zboril, R. et al. Treatment of chemical warfare agents by zero-valent iron nanoparticles and ferrate(VI)/(III) composite. Journal of Hazardous Materials 211, 126-130, 2012
  • Marsalek, B. et al. Multimodal Action and Selective Toxicity of Zerovalent Iron Nanoparticles against Cyanobacteria. Environmental Science & Technology 46, 2316-2323, 2012
  • Klimkova, S. et al. Zero-valent iron nanoparticles in treatment of acid mine water from in situ uranium leaching. Chemosphere 82, 1178-1184, 2011

Any additional information on request: