title: Modeling the release of organic contaminants during compost decomposition in soil.
abstract: Composts, incorporated in soils as amendments, may release organic contaminants during their decomposition. COP-Soil is presented here as a new model to simulate the interaction between organic contaminants and compost, using one module for organic matter and one for organic pollutants, with these modules being linked by several assumptions. Published results of laboratory soil incubations using labeled carbon pollutants from compost were used to test the model for one polycyclic aromatic hydrocarbon (PAH), two surfactants and one herbicide. Several simulation scenarios were tested using (i) the organic pollutant module either alone or coupled to the organic matter module, (ii) various methods to estimate the adsorption coefficients (Kd) of contaminants on organic matter and (iii) different degrading biomasses. The simulations were improved if the organic pollutant module was coupled with the organic matter module. Multiple linear regression model for Kd as a function of organic matter quality yielded the most accurate simulation results. The inclusion of specific biomass in the model made it possible to successfully predict the PAH mineralization.
authors: INRA, UMR 1091 Environnement et Grandes Cultures, F-78850 Thiverval-Grignon, France; Institute of Urban Environment, Chinese Academy of Sciences, 361021 Xiamen, China.
authors: Chunnu
authors: C
authors: Geng
authors: AgroParisTech, UMR 1091 Environnement et Grandes Cultures, F-78850 Thiverval-Grignon, France.
authors: Claire-Sophie
authors: CS
authors: Haudin
authors: Suzhou University of Science and Technology, 215009 Suzhou, China.
authors: Yuan
authors: Y
authors: Zhang
authors: INRA, UMR 614 Fractionnement des AgroRessources et Environnement, F-51100 Reims, France.
authors: Gwenaëlle
authors: G
authors: Lashermes
authors: INRA, UMR 1091 Environnement et Grandes Cultures, F-78850 Thiverval-Grignon, France.
authors: Sabine
authors: S
authors: Houot
authors: INRA, UMR 1091 Environnement et Grandes Cultures, F-78850 Thiverval-Grignon, France. Electronic address: pgarnier@grignon.inra.fr.
authors: Patricia
authors: P
authors: Garnier
mesh_terms: D000327:Adsorption; D000393:Air Pollutants; D002244:Carbon / Q000378:metabolism*; D005449:Fluorenes / Q000378:metabolism*; D005998:Glycine / Q000031:analogs & derivatives* / Q000378:metabolism; D006540:Herbicides / Q000378:metabolism*; D008962:Models, Theoretical; D011084:Polycyclic Aromatic Hydrocarbons; D012989:Soil Pollutants / Q000378:metabolism*; D013501:Surface-Active Agents / Q000378:metabolism*; D000097797:Glyphosate
chemical_list: D000393:Air Pollutants; D002244:Carbon; D005449:Fluorenes; D005998:Glycine; D006540:Herbicides; D011084:Polycyclic Aromatic Hydrocarbons; D012989:Soil Pollutants; D013501:Surface-Active Agents; D000097797:Glyphosate; C007738:fluoranthene
keywords: Adsorption; Composts; Microbial degradation; Model; Organic contaminant; Soil