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Impact des molécules extraites de géomembranes sur l'activité des micro-organismes en milieux aqueux

Abstract : Some additives contained in GMs used for hydraulic applications are extracted to water or soil. To evaluate the ecotoxicological impacts of these chemical compounds on the environment, polypropylene ( PP ) and high density polyethylene (H P D E ) GMs are immersed in aqueous solutions (pH 4 and 7) at 80, 55 and 25°C. At various times intervals, effects of the extracted solutions on microorganisms are evaluated. Ecotoxicological tests highlight negative effects of the first 11 days extracted molecules on micro algae growth and microcrustacean behavior. However, after prolonged exposure, microalgae growth is stimulated. These results may be related to the change of the chemical nature of the molecules detected by UV spectroscopy.
keyword : ECOTOXICITE
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Submitted on : Saturday, May 16, 2020 - 5:22:18 PM
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  • HAL Id : hal-02609189, version 1
  • IRSTEA : PUB00061117

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M. Guéguen-Minerbe, C. Durrieu, A. Guenne, L. Rouillac, D. Diafi, et al.. Impact des molécules extraites de géomembranes sur l'activité des micro-organismes en milieux aqueux. 12èmes Rencontres Géosynthétiques, Mar 2019, Nancy, France. pp.8, 2019. ⟨hal-02609189⟩

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