Toluene degradation by a water/silicone oil mixture for the design of two phase partitioning bioreactors - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Chinese Journal of Chemical Engineering Année : 2017

Toluene degradation by a water/silicone oil mixture for the design of two phase partitioning bioreactors

Résumé

Toluene degradation performances were studied in a 10 L Two-Phase Partitioning Bioreactor (TPPB). The liquid phase consisted of a mixture of water and PDMS 50 (Poly DiMethylSiloxane, i.e. silicone oil, viscosity of 46 mPa.s) in the volume ratio of 75%/25%. Two series of experiments were carried out: in the first, the reactor was sequentially supplied with toluene whereas in the second, toluene was continuously supplied. Activated sludge from the wastewater treatment plant of Beaurade (Rennes, France) was used at an initial concentration of 0.5 dry mass g.(mixture L)(-1). The elimination capacity (EC) was investigated as well as the change in biomass concentration over time. Toluene biodegradation was very efficient (removal efficiency, RE = 100%) for toluene flows ranging from 0.2 to 1.2 ml.h(-1), corresponding to elimination capacities of up to 104 g.m(-3).h(-1). For a toluene flow of 1.2 ml.h(-1), the biomass concentration measured at the end of the experiment was 4.7 dry mass g.(mixture L)(-1). The oxygen concentration in the liquid phase was clearly not a limiting factor in these operating conditions. Based on these results, an extrapolation leading to the design of a large-scale pilot TPPB can now be considered to study toluene degradation performances in industrial conditions.

Domaines

Génie chimique
Fichier principal
Vignette du fichier
Guillerm et al. - Toluene degradation by a watersilicone oil mixtur.pdf (736.06 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01671253 , version 1 (08-06-2018)

Identifiants

Citer

Maxime Guillerm, Annabelle Couvert, Abdeltif Amrane, Edith Norrant, Audrey Breton, et al.. Toluene degradation by a water/silicone oil mixture for the design of two phase partitioning bioreactors. Chinese Journal of Chemical Engineering, 2017, 25 (10), pp.1512-1518. ⟨10.1016/j.cjche.2017.01.010⟩. ⟨hal-01671253⟩
198 Consultations
195 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More