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Développement d'une technologie de biorémediation efficace pour l'élimination des composés monoaromatiques volatils des eaux contaminées

Abstract : The work reported focus on the biodegradation of volatile aromatic compounds (benzene, toluene, xylenes) present in aqueous solutions. The main issue addressed is quantification and control of gas-liquid solute transfers. These transfers lead to organic compounds loss in the gas at each step of handling of an aqueous solution. It has been demonstrated that biomass removal from a liquid suspension must be performed with special care and a protocol based on centrifugation with Teflon capped, filled tubes is proposed. A new protocol for determination of solute activity coefficient at infinite dilution, also based on centrifugation experiments, is presented. Main work at the microbial level reveals that solute stripping in gassed systems cannot be avoided, even with the use of liquid-liquid systems. An anaerobic approach, involving a nitrate-respiring bacterium, is shown to have a great potential when used in combination with heterogeneous media.
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https://tel.archives-ouvertes.fr/tel-00730195
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Submitted on : Friday, September 7, 2012 - 5:51:54 PM
Last modification on : Thursday, February 25, 2021 - 9:12:02 AM
Long-term archiving on: : Friday, December 16, 2016 - 11:12:10 AM

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  • HAL Id : tel-00730195, version 1

Citation

Farhadian Esfahani Mehrdad. Développement d'une technologie de biorémediation efficace pour l'élimination des composés monoaromatiques volatils des eaux contaminées. Génie des procédés. Université Blaise Pascal - Clermont-Ferrand II, 2008. Français. ⟨NNT : 2008CLF21843⟩. ⟨tel-00730195⟩

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