Remediation of Contaminated Soils and Groundwater

In the context of the urgent need for low cost solutions that enable the in situ recovery of contaminated soil and aquifer systems and the emergence of remediation technologies using nanomaterials, the LNEC/Geoplano consortium decided to check the applicability of in situ remediation of soils and groundwater using zero-valent iron nanoparticles (nZVI).
 
The LNEC/Geoplano consortium tested an emerging in situ methodology of soil and groundwater remediation using zero valent iron nanoparticles (nZVI), in a brownfield site located on south of Lisbon.
 
The area where the pilot tests were conducted has an industrial background with a strong presence of heavy metals, sulphates and nitrates.
 
The implementation of the in situ testing was preceded by the physical and chemical characterization of soils, groundwater and lixiviates produced by contaminated soils. The effect of different nZVI dosing was tested in laboratory.
 
The in situ tests were executed with three different concentrations of nZVI solutions. After the nZVI injection, a program for monitoring the groundwater quality and the contaminants concentrations was implemented.
 
The results were definitely satisfactory.
 
Promoting the best site solutions and the effectiveness of the nZVI remediation on soils and GW remediation, Geoplano is able to develop with their clients the right remediation method using the nZVI technology.