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Etude des interactions bactéries - phénanthrène - charbon actif en vue de l'élaboration d'une barrière perméable réactive

Abstract : Permeable Reactive Barrier (PRB) is a new way for the remediation of contaminated groundwater, but up to now Polycyclic Aromatic Hydrocarbons (PAHs) were rarely considered. We investigated PAH - bacteria - materials interactions in order to validate the feasibility of PRB for PAH contamination. PHE Adsorption/desorption kinetics onto different materials, activated carbons (CA), pouzzolane (Pz) and pouzzolane coated with heavy fuel (PzF), were investigated. PHE biodegradation were performed on batch using PAH degrading bacteria and the PRB materials. CA was a good media for PRB process : Phenanthrene sorption capacity is 100 to 10000 fold higher than PzF and Pz. Phenanthrene mineralization with CA was higher than without material. Bacterial properties affected PHE biodegradation. Biofilm production improved PHE biodegradation by PAH degrading bacteria. Column studies showed that inoculation of the column improved its efficiency : adsorbed PHE degradation and increased retardation of PHE.
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https://hal.univ-lorraine.fr/tel-01748110
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Pierre Leglize. Etude des interactions bactéries - phénanthrène - charbon actif en vue de l'élaboration d'une barrière perméable réactive. Sciences de la Terre. Université Henri Poincaré - Nancy 1, 2004. Français. ⟨NNT : 2004NAN10188⟩. ⟨tel-01748110⟩

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