Reference : Study on mass transfer of isopropylbenzene and oxygen in a two-phase partitioning biorea...

	Document type :	Scientific journals : Article
	Discipline(s) :	Life sciences : Environmental sciences & ecology Life sciences : Biotechnology
	To cite this reference:	http://hdl.handle.net/2268/22479

Title :	Study on mass transfer of isopropylbenzene and oxygen in a two-phase partitioning bioreactor in the presence of silicone oil.
Language :	English
Author, co-author :	Aldric, Jean-Marc [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
	Lecomte, Jean-Paul [ > > ]
	Thonart, Philippe [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech - Biochimie et microbiologie industrielles >]
Publication date :	2009
Journal title :	Applied Biochemistry and Biotechnology
Publisher :	Humana Press
Volume :	153
Pages :	67-79
Audience :	International
ISSN :	0273-2289
City :	Totowa
Country :	NJ
Keywords :	[en] Two-phase bioreactor ; volatil organic compounds ; off gaz treatment ; mass transfer enhancement ; silicone oil ; hydrodynamics
Abstract :	[en] A two-phase partitioning bioreactor (TPPB) to treat gas effluents polluted by volatile organic compound (VOC) has been developed. In this work, both the mass transfer of isopropylbenzene (IPB) and oxygen have been considered in relation to their influence on the hydrodynamics of the reactor and the type of silicone oils used as a second phase. The synergistic effect of silicone oil and stirrer speed on the global oxygen mass transfer coefficient (KLa) and gas-hold-up (up to 12%) have been investigated. The addition of 10% of low viscosity silicone oil (10 centistokes) in the reactor does not significantly affect the oxygen transfer rate. The very high solubility of IPB in the silicone oil leads to an enhancement of driving force term, especially for high fraction of silicone oil. However, it does not seem useful to exceed a volume fraction of 10% since KLaIPB decreases sharply at higher proportions of silicone oil. KLaIPB and KLa O2 evolve in the same way with the proportion of silicone oil. These results confirm the potentialities of our bioreactor to improve both the oxygen and pollutant gas transfer in the field of the treatment of gaseous pollutants, even for highly concentrated effluents.
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/22479

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