Material is decontaminated of a pollutant by using perennial woody plants
with the ability to accumulate the pollutant in the leaves in high
concentrations. The decontamination is based on a combination of
phytoextraction, pollutant transport with the falling of the leaves to the
material surface, leaching of the pollutant out of the leaves decomposing
on the material surface, and (physico-)chemical fixing of the pollutant in
a reactive layer which is bounded by geotextiles and which physically
and/or chemically binds the pollutant.
