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Article Dans Une Revue Environmental Technology Année : 2013

Biodegradation of toluene in a two-phase partitioning bioreactor and impact of activated sludge acclimation

Résumé

A two-phase partitioning bioreactor was considered to remove toluene contained in a biodegradable organic phase by activated sludge (AS). The selected solvent was hexadecane. In a first step, the biodegradation of toluene dissolved in hexadecane by AS was examined. In a second step, acclimation of the AS was carried out in order to improve the biodegradation rate. Acclimation improved toluene removal, since biodegradation yield increased from 72% to more than 91%. A total consumption was observed after only 4 days culture with acclimated AS, since the rest of the toluene corresponded to gas leak; while in the case of non-acclimated sludge, losses cannot account for all non-degraded toluene. Regarding hexadecane, acclimation also improved its degradation, from 43% to 79% after 6 days culture for non-acclimated and acclimated AS, respectively.

Domaines

Chimie organique
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Dates et versions

hal-00947680 , version 1 (17-02-2014)

Identifiants

Citer

Imane Bechohra, Annabelle Couvert, Abdeltif Amrane. Biodegradation of toluene in a two-phase partitioning bioreactor and impact of activated sludge acclimation. Environmental Technology, 2013, 35 (6), pp.735-740. ⟨10.1080/09593330.2013.848938⟩. ⟨hal-00947680⟩
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