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Study of phenomena responsible for organic contaminants mobilization within the framework of harbor sediment dredging

Abstract : This work is performed in framework of Mediterranean harbor dredging and is intended to be use for the improvement of dredging operations management as well as potential beneficial use of dredged sediments. Sediments constitute an important source of inorganic and organic contaminants of marine environment. In order to avoid site pollution increase or taking pollution away from harbor during sediment dredging, factors which could drive organic contamination mobilization are studied. Indeed, organic pollution mobilization can result from various and complex phenomena: sediment’s granular behavior (agglomeration/dispersion) physico-chemical (adsorption/desorption) and/or chemical (dissolution/precipitation). Thus the main goal is to study and identify those phenomena in other to understand, and predict them. A better understanding of contaminants mobilization factors, will be use useful for dredged sediment quality assessment and for dredging operation consequences. Pollutants transfer or dispersion depends on several phenomena like partition between interstitial water and solid phase and/or particle dispersion. Morpho-granular, physicochemical, crystallographic and chemical characterizations of sediments collected were realized to study possible transfers of organic pollutant like Polycyclic Aromatic Hydrocarbons (PAHs).
Document type :
Poster communications
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https://hal.mines-ales.fr/hal-02510184
Contributor : Administrateur Imt - Mines Alès <>
Submitted on : Tuesday, March 17, 2020 - 3:10:59 PM
Last modification on : Thursday, March 19, 2020 - 1:03:34 AM

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  • HAL Id : hal-02510184, version 1

Citation

Gisele Usanase, Nathalie Azéma, Youssef El Bitouri, Jean-Claude Souche, Murielle Avezac, et al.. Study of phenomena responsible for organic contaminants mobilization within the framework of harbor sediment dredging. 11th International SedNet Conference, Apr 2019, Dubrovnik, Croatia. 2019. ⟨hal-02510184⟩

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