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

查看全文 作　　者：Maxime [1]Guillerm;Annabelle [1]Couvert;Abdeltif [1]Amrane;Edith [2]Norrant;Audrey [3]Breton;éric [4]Dumont

机构地区：[1]Erole Nationale Supérieure de Chimie de Rennes, UMR CNRS 6226, 11 allee de Beaulieu, CS 5083K 35708 Rennes Cedex 7, France;[2]UCB BioPharma sprl, Avenue de l'Industrie, B 1420 Braine l'Alleud, Belgum;[3]Total S.A, CSTJF, Avenue Larribau, CA 374, 64018 Pau Cedex, France;[4]UMR CNRS 6144 GEPEA, IMT-Atlantique, La Chantrerie, 4 rue Alfred Kastler, B.P. 20722, 44307 Nantes Cedex 3, France

出　　处：《Chinese Journal of Chemical Engineering》索引2017年第25卷第10期,共7页

基　　金：the French Environment and Energy Management Agency(ADEME) for their support through a PhD fellowship for M.Guillerm 摘　　要：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 Di Methyl Siloxane,i.e.silicone oil,viscosity of 46 m Pa·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 ef ficient(removal ef ficiency,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. 关键词：生物反应器污水处理厂降解性能两相分配混合液甲苯设计聚二甲基硅氧烷

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

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