Performance of geosynthetics for environmental protection in landfills

Nathalie Touze (1)

1 UR HBAN - Hydrosystèmes et Bioprocédés

The objective of this Keynote Lecture is to give an updated overview of transfer properties of geosynthetic liner materials used in landfills and of parameters that impact them. Some innovative measurement techniques are detailed, especially as regards the measurement of advective flow rates for multicomponent geosynthetic clay liners GCLs. The measurement of advective flow rates through geomembranes and multicomponent GCLs is first described. Then the effect of the mass per unit area of bentonite in GCLs, the nature of the bentonite in GCLs and of hydration without load on the hydraulic conductivity of GCLs are described. A brief presentation of pollutants of concern in landfills and especially of microorganic pollutants is given. The chemical compatibility of GCLs with leachate is discussed in the third section of this Keynote Lecture. Finally, the diffusion of organic and inorganic species in relation with the composition of leachate previously described is given in the last section of this Keynote Lecture.

Mots clés: PERFORMANCE; GEOSYNTHETIQUE; ENVIRONNEMENT; DECHARGE

Domaines: Sciences de l'environnement

Nathalie Touze. Performance of geosynthetics for environmental protection in landfills. 5th European Geosynthetics Congress, Sep 2012, Valencia, Spain. p. 29 - p. 47. ⟨hal-00763666⟩