Improvement of Membrane Performances to Enhance the Yield of Vanillin in a Pervaporation Reactor

Leonardo Palmisano, Vittorio Loddo, Francesco Parrino, Giovanni Camera-Roda, Antonio Cardillo

Risultato della ricerca: Article

14 Citazioni (Scopus)

Abstract

In membrane reactors, the interaction of reaction and membrane separation can be exploited to achieve a “process intensification”, a key objective of sustainable development. In the present work, the properties that the membrane must have to obtain this result in a pervaporation reactor are analyzed and discussed. Then, the methods to enhance these properties are investigated for the photocatalytic synthesis of vanillin, which represents a case where the recovery from the reactor of vanillin by means of pervaporation while it is produced allows a substantial improvement of the yield, since its further oxidation is thus prevented. To this end, the phenomena that control the permeation of both vanillin and the reactant (ferulic acid) are analyzed, since they ultimately affect the performances of the membrane reactor. The results show that diffusion of the aromatic compounds takes place in the presence of low concentration gradients, so that the process is controlled by other phenomena, in particular by the equilibrium with the vapor at the membrane-permeate interface. On this basis, it is demonstrated that the performances are enhanced by increasing the membrane thickness and/or the temperature, whereas the pH begins to limit the process only at values higher than 6.5.
Lingua originaleEnglish
pagine (da-a)96-112
Numero di pagine17
RivistaMEMBRANES
Volume4
Stato di pubblicazionePublished - 2014

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Pervaporation
Membranes
ferulic acid
Aromatic compounds
Permeation
vanillin
Sustainable development
Vapors
Recovery
Oxidation
Acids

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Filtration and Separation
  • Process Chemistry and Technology

Cita questo

Improvement of Membrane Performances to Enhance the Yield of Vanillin in a Pervaporation Reactor. / Palmisano, Leonardo; Loddo, Vittorio; Parrino, Francesco; Camera-Roda, Giovanni; Cardillo, Antonio.

In: MEMBRANES, Vol. 4, 2014, pag. 96-112.

Risultato della ricerca: Article

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AU - Cardillo, Antonio

PY - 2014

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