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L'influence des interactions physico-chimiques des Hydrocarbures Aromatiques Polycycliques (HAP) avec les constituants des sols sur leur mobilité et leur transfert dans l'environnement

Abstract : The study of Polycyclic Aromatic Hydrocarbon (PAHs) mobility and transfers is of high interest for the risk assessment of contaminated soils and sites. Emitted from different sources, PAHs are mainly produced through human activities. But they can be classified in three main categories : biogenic PAHs, petrogenic PAHs, and pyrogenic PAHs. Due to their toxicological hazard, PAHs sometimes represent a risk for human health. There are many methods available in the litterature for predicting the water solubility of PAHs or their partitionning between water and organic substances. Some detailed studies in pharmaceutical sciences allow now to better estimate their thermodynamical properties from molecular structure data. Nevertheless, validated applications of theses results are limited to relatively simple systems compared to industrial soils ones. We have studied the PAHs mobility by solubilization and their transfer by diffusion in materials potentially contaminated by coal tar in the presence of diverse organic substances in the aqueous phase (toluene, phenol or AH) or in non aqueous phase liquids (tars ou natural H.S). We have developed a specific approach for PAHs in complex matrices. This development reaches the statement of a conceptual model in which thermodynamical equilibrium constraints between phases can be quantified and described with numerical models. An experimental approach targetted on the case of phenanthrene gives results which allow the discussion of model application for a better understanding of phenomena driving PAHs solubilization and diffusive transfer.
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http://docnum.univ-lorraine.fr/prive/SCD_T_2006_0010_AMER.pdf
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https://hal.univ-lorraine.fr/tel-01746638
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Submitted on : Thursday, March 29, 2018 - 10:41:42 AM
Last modification on : Wednesday, March 24, 2021 - 10:36:02 AM

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Ahmed Khalil Souliman Amer. L'influence des interactions physico-chimiques des Hydrocarbures Aromatiques Polycycliques (HAP) avec les constituants des sols sur leur mobilité et leur transfert dans l'environnement. Sciences de la Terre. Université Henri Poincaré - Nancy 1, 2006. Français. ⟨NNT : 2006NAN10010⟩. ⟨tel-01746638⟩

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