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2013: POLITECNICO DI TORINO – COUPLED PHENOMENA IN ENVIRONMENTAL GEOTECHNICS

Environmental Restoration Of Contaminated Sites, Quarries, Mines And Landfill With Deep Roots Herbaceous Species

Paper presented in the frame of the International Symposium: “Coupled Phenomena in Environmental Geotechnics (CPEG) – from theoretical and experimental research to practical applications”.

 

International Symposium  “CPEG 2013”

ENVIRONMENTAL RESTORATION OF CONTAMINATED SITES, QUARRIES, MINES AND LANDFILL WITH DEEP ROOTS HERBACEOUS SPECIES

NICOLA ERA*, and TIZIANA VERRASCINA*

SUMMARY

The environmental restoration of contaminated sites and old landfills often turn out to be very difficult, mainly because plant species used for the renaturation of sterile and/or contaminated soils don’t take roots easily.  Over the years several techniques have been developed for soil protection and renaturation.  Among these there is an emerging innovative technology that uses only natural herbaceous perennials plants with deep rooting system, and allows to operate in areas where climatic conditions were until a few years ago considered prohibitive for the development of vegetation: barren lands, altered or fractured rocks, soils treated with addition of lime up to 5% by weight, soil polluted by waste, hydrocarbons and heavy metals in concentrations up to 10 times higher than the upper limits admitted by law. In addition, these herbaceous plants show the ability to withstand high temperatures produced by the fermentation of organic waste in landfills.

— Claudio Zarotti

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