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Effect of organic solvents on oxygen mass transfer in multiphase systems: Application to bioreactors in environmental protection

Paper ID Volume ID Publish Year Pages File Format Full-Text
4873 253 2006 8 PDF Available
Title
Effect of organic solvents on oxygen mass transfer in multiphase systems: Application to bioreactors in environmental protection
Abstract

The absorption of oxygen in aqueous–organic solvent emulsions was studied in a laboratory-scale bubble reactor at a constant gas flow rate. The organic and the gas phases were dispersed in the continuous aqueous phase. Volumetric mass transfer coefficients (kLa) of oxygen between air and water were measured experimentally using a dynamic method. It was assumed that the gas phase contacts preferentially the water phase. It was found that addition of silicone oils hinders oxygen mass transfer compared to air–water systems whereas the addition of decane, hexadecane and perfluorocarbon PFC40 has no significant influence. By and large, the results show that, for experimental conditions (organic liquid hold-up ≤10% and solubility ratio ≤10), the kLa values of oxygen determined in binary air–water systems can be used for multiphase (gas–liquid–liquid) reactor design with applications in environmental protection (water and air treatment processes).

Keywords
Absorption; Mass transfer; Multiphase reactors; Silicone oil; Oxygen; Bioprocesses
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Effect of organic solvents on oxygen mass transfer in multiphase systems: Application to bioreactors in environmental protection
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 30, Issue 3, 25 June 2006, Pages 245–252
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Any Questions? feel free to contact us