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Suivi des métaux et métalloïdes dans les effluents de centres de stockage de déchets : Spéciation et devenir des composés de l'arsenic et de l'étain dans les lixiviats et les biogaz

Abstract : Landfilling is still nowadays the most used way of municipal solid waste (MSW) management with incineration. MSW landfills remain « black boxes » in which physical, chemical and biological phenomena interact simultaneously. Two effluents are produced during the waste degradation: leachates and biogases. Even if there are limited contact between effluents and the surrounding ecosystem, effluent monitoring is required to improve their treatments and to prevent sanitary and environmental risks. The aim of this work was to develop the methodologies to analyse metals and metalloids in order to assess their fate in landfill effluents. The focus on arsenic (As) and tin (Sn) was motivated by their presence in the municipal solid wastes (glasses, metals, plastics) and in the effluents, and by the difference of toxicity between their species. The development of speciation analysis protocols for As and Sn in the two complex matrices has aimed to their monitoring in the effluents by integrating landfill characteristics and climatic conditions. The occurrence of the species has been examined by taking into account their potential presence in the wastes. Formation and mobilisation processes were proposed to explain their occurrence in the two effluents: first, mobilisation from the waste (inorganic species of As and Sn, butylated and methylated Sn), then methylation and ethylation reactions through biological pathway (methylated As and Sn, ethylated Sn, ionic and gaseous).
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https://tel.archives-ouvertes.fr/tel-00134725
Contributor : Pauline Pinel-Raffaitin <>
Submitted on : Monday, March 5, 2007 - 10:38:19 AM
Last modification on : Thursday, March 5, 2020 - 7:12:03 PM
Long-term archiving on: : Tuesday, April 6, 2010 - 11:11:25 PM

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  • HAL Id : tel-00134725, version 1

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Pauline Pinel-Raffaitin. Suivi des métaux et métalloïdes dans les effluents de centres de stockage de déchets : Spéciation et devenir des composés de l'arsenic et de l'étain dans les lixiviats et les biogaz. Autre. Université de Pau et des Pays de l'Adour, 2006. Français. ⟨tel-00134725⟩

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