LQM is a specialist environmental consultancy based in Nottingham (UK) with an international reputation for assessing and managing the risks posed to human health and the environment by contaminants in soil. Increasingly this is being done within a context of sustainable development and specifically sustainable brownfield regeneration.

We provide consultancy, peer review and expert witness services, contract research and training courses on all aspects of the management of land contamination to problem holders, developers and local government.

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Second Annual Meeting of the NanoRem project

In April, three of the LQM team (Andy Gillett, Judith Nathanail and Paul Nathanail) travelled to Barcelona for the second annual meeting of the NANOREM project.

This year there has been lots of progress:

  • New variants of particles have been created to optimise transport;
  • Numerous laboratory experiment have been carried out and show how adding stabilisers such as CMC can increase mobility;
  • Large scale tank experiments have been set up to allow investigation of fate and transport at a larger scale;
  • There have been injections of nanoparticles at two demonstration sites, where early results show that the nanoparticles are moving in the subsurface.  Ongoing monitoring will show how the nanoparticles impact the contamination.
nZVI injection well in operation in Switzerland

nZVI injection well in operation in Switzerland

In addition, modellers are working on understanding nanoparticle transport, and ecotoxicity tests are being carried out.  LQM are looking forward to more results to feed into an improved version of our predeployment risk assessment, which is designed to assess the possibility that nanoparticles used in groundwater risk assessment could impacting the wider environment.

Prior to the meeting, Judith Nathanail had visited one of the project demonstration sites in Switzerland, where milled zero-valent iron nanoparticles (nZVI) were being injected to treat PCE contamination within groundwater. The photo shows the injection rod with integral packer (the black section) being inserted into an injection well.  Once at the correct depth, the packer was inflated allowing the nZVI to be injected at selected depths within the well.