Feasability Study on the In-Situ Application of Reactive Nano-Sized Iron Particles to Remediate CHC-Contaminations
Aquifers contaminated with chlorinated solvents promises to be very effectively remediated with reactivenano-iron. The large specific surface of nano-iron results in extremely fast reaction rates. Due tothe small size, the particles are thought of to be able to be injected into the aquifer and reach thecontaminants through simple injection wells. So far, very little is known about the exact transportcapacity of nano-iron. In the literature the claims toward this differ greatly.In this research project, systematic experiments were conducted to get a better understanding of themobility and characteristics of nano-iron. It was shown that the transport distance of nano-iron particleswas affected by the age (and with that the aggregation stage) of the particles, by the discharge and theconcentration of the suspension during injection, by the grain size distribution, as well as the permeabilityand heterogeneity of the porous media. There was no significant change in the retardation of nano-ironat different velocities. Apart from the experiments, a technology to accurately and non-destructivelymeasure the concentration distribution of nano-iron in a column was developed.
- Project manager
- Research assistants
de Boer, Cjestmir
Baden-Württemberg Programm Lebensgrundlage Umwelt und ihre Sicherung (BWPLUS)
- Cooperation partners