Pervaporation is the ideal membrane separation process to be coupled with photocatalysis for the greensynthesis of vanillin from ferulic acid. In fact the operative conditions of the two processes are absolutelycongruent and the integration is straightforward even operating with separate equipments. The utilizationof a highly selective membrane allows the continuous recovery of vanillin by pervaporation from thereacting solution, so that its oxidative degradation is largely avoided and the yield is substantiallyenhanced. The effects of the main parameters are analyzed resorting to a mathematical model, whichis validated by a comparison with the experimental data. In particular it is demonstrated that an optimalvalue of the ratio of the rate of pervaporation to the rate of reaction maximizes the ‘‘intensification’’ of theprocess. Other benefits of the integrated process, such as the complete retention of the photocatalyticpowder in the reacting solution and high degree of purification of the product are presented anddiscussed.
|Numero di pagine||8|
|Rivista||Chemical Engineering Journal|
|Stato di pubblicazione||Published - 2012|
All Science Journal Classification (ASJC) codes