title: Using a Bayesian approach to improve and calibrate a dynamic model of polycyclic aromatic hydrocarbons degradation in an industrial contaminated soil.
abstract: A novel kinetics model that describes the dynamics of polycyclic aromatic hydrocarbons (PAHs) in contaminated soils is presented. The model includes two typical biodegradation pathways: the co-metabolic pathway using pseudo first order kinetics and the specific biodegradation pathway modeled using Monod kinetics. The sorption of PAHs to the solid soil occurs through bi-phasic fist order kinetics, and two types of non-extractible bounded residues are considered: the biogenic and the physically sequestrated into soil matrix. The PAH model was developed in Matlab, parameterized and tested successfully on batch experimental data using a Bayesian approach (DREAM). Preliminary results led to significant model simplifications. They also highlighted that the specific biodegradation pathway was the most efficient at explaining experimental data, as would be expected for an old industrial contaminated soil. Global analysis of sensitivity showed that the amount of PAHs ultimately degraded was mostly governed by physicochemical interactions rather than by biological activity.
authors.affiliation: INRA, EcoSys, UMR1405, Université Paris-Saclay, 78850, Thiverval-Grignon, France; INRA, Laboratoire Sols et Environnement, UMR 1120, F-54518, Vandoeuvre-lès-Nancy, France; Université de Lorraine, Laboratoire Sols et Environnement, UMR 1120, F-54518, Vandoeuvre-lès-Nancy, France; Agence de l'Environnement et de la Maîtrise de l'Energie, 20 avenue du Grésillé, BP 90406, F-49004, Angers Cedex 01, France.
authors.forename: Khaled
authors.initials: K
authors.lastname: Brimo
authors.affiliation: INRA, EcoSys, UMR1405, Université Paris-Saclay, 78850, Thiverval-Grignon, France.
authors.forename: Patricia
authors.initials: P
authors.lastname: Garnier
authors.affiliation: Key Laboratory of Regional Sustainable Development Modeling, Institute of Geographical Sciences and Natural Resource Research, Chinese Academy of Sciences, 100101, Beijing, China.
authors.forename: Siao
authors.initials: S
authors.lastname: Sun
authors.affiliation: Université de Lyon, INSA Lyon, DEEP, F-69621, Villeurbanne Cedex, France.
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Bertrand-Krajewski
authors.affiliation: CNRS, LIEC, UMR 7360, Faculté des Sciences et Technologies, BP 70239, F-54506, Vandoeuvre-lès-Nancy Cedex, France; Université de Lorraine, LIEC, UMR 7360, Faculté des Sciences et Technologies, BP 70239, F-54506, Vandoeuvre-lès-Nancy Cedex, France.
authors.forename: Aurélie
authors.initials: A
authors.lastname: Cébron
authors.affiliation: INRA, Laboratoire Sols et Environnement, UMR 1120, F-54518, Vandoeuvre-lès-Nancy, France; Université de Lorraine, Laboratoire Sols et Environnement, UMR 1120, F-54518, Vandoeuvre-lès-Nancy, France. Electronic address: stephanie.ouvrard@univ-lorraine.fr.
authors.forename: Stéphanie
authors.initials: S
authors.lastname: Ouvrard
mesh_terms: D001499:Bayes Theorem; D001673:Biodegradation, Environmental; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry*; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000737:chemistry*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D012987:Soil; D012989:Soil Pollutants
keywords: Biodegradation pathways; DREAM; Global sensitivity analysis; PAH reactivity