Enzymatic Biodiesel Synthesis by the Biphasic Esterification of Oleic Acid and 1-Butanol in MicroreactorsHommes, A., de Wit, T., Euverink, G-J. & Yue, J., 28-Aug-2019, In : Industrial & Engineering Chemistry Research. 58, 34, p. 15432-15444 13 p.
Research output: Contribution to journal › Article › Academic › peer-review
The enzymatic esterification of oleic acid and 1-butanol to butyl oleate was performed in an aqueous-organic system in capillary microreactors with various inner diameters operated under slug flow. The free Rhizomucor miehei lipase in the aqueous phase was used as catalyst and n-heptane as the organic solvent. A close to 100% yield of butyl oleate could be achieved in the microreactor made of polytetrafluoroethylene within 30 min residence time at 30 °C. The reaction rate is well described by the existing kinetic model based on a Ping Pong Bi Bi mechanism with competitive inhibition of 1-butanol. This model was extended to describe the effect of the interfacial area and aqueous to organic flow ratio in microreactors. By performing the reaction at low aqueous to organic flow ratios in hydrophilic microreactors (e.g., made of stainless steel), the enzyme turnover number could be enhanced significantly making it promising for process intensification.
|Number of pages||13|
|Journal||Industrial & Engineering Chemistry Research|
|Early online date||30-Jul-2019|
|Publication status||Published - 28-Aug-2019|
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