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Automation of an experimental system for the microbial epoxidation of propene and 1-butene
Authors:LES Brink  J Tramper  K Van &#x;T Riet  KChAM Luyben
Institution:Department of Food Science, Food and Bioengineering Group, Agricultural University Wageningen, De Dreyen 12, 6703 BC Wageningen The Netherlands;Laboratory of Bioengineering, Delft University of Technology, Julianalaan 67, 2628 BC Delft The Netherlands
Abstract:An experimental set-up for automatic gas chromatographic analysis of circulation gas in a batch-reactor system is described. Gas sampling, substrate addition, data acquisition and data reduction are done with a coupled programmable integrator and microcomputer. On-line monitoring of the microbial oxidation of the gaseous alkenes, propene and 1- butene, to the corresponding epoxides is used to illustrate the operation of the experimental system. Measured gas concentrations of alkene and alkene oxide can be converted readily to quantify the reaction course in the liquid phase(s) of the circulation system. Results are presented for both one liquid phase (water) and two liquid phases (water and organic solvent) present in the reactor. The operational stability of the immobilized-cell system used for the epoxidations can be assessed by computer-controlled addition of gaseous alkene.
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