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Dynamics of emerging organic pollutants from a municipal landfill

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Résumé

In large cities, municipal landfills may have received waste coming from hospitals, but also green waste. The corresponding anthroposol might thus be a source of organic emerging substances such as pharmaceutical or phytosanitary substances. The occurrence and fate of organic emerging substances from such a former landfill in urban areas has been studied as part of a research program dealing with the observation and the monitoring of the environment. Of the 261 substances sought (30 pharmaceutical molecules, 223 phytosanitary products and 8 other emerging substances), 11 pharmaceutical molecules in particular have been quantified in the leachates, 2 endocrine disruptors (bisphenol A and triclosan) and 10 phytosanitary substances. Most of these substances are found also in groundwater immediately downstream of the site (including carbamazepine) at concentrations ranging between 0.1 µg/l and 10 µg/l. The number of detected substances appears much smaller a few hundred meters far from the landfill (bisphenol A and diclofenac in particularly, with concentrations ranging from 0.1 to 1 µg/l and about 0.1 µg/l respectively). Natural attenuation occurs during transfer in the plume, as observed for PAHs or metals. Several mechanisms may explain the natural attenuation of the substances.
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Dates et versions

hal-01484826 , version 1 (07-03-2017)

Identifiants

  • HAL Id : hal-01484826 , version 1

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Cécile Le Guern, Béatrice Bechet, Alexandra Lepinay, Pierre Conil. Dynamics of emerging organic pollutants from a municipal landfill. EGU General Assembly 2017, Apr 2017, Vienne, Austria. ⟨hal-01484826⟩
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