Flavor and odor components of foods are often lost during processing, which leads to a final product with poorer quality when compared to fresh made ingredients. It is not a different scenario in orange juice and other beverage industries. Heating processes cause severe physical and chemical losses of the natural characteristic flavour of orange juice. Methods, that use lower heat, present ther...

By using binary ethanol/water mixtures, the separation performance of two improved commercial pervaporation embranes (PERVAPTM) are presented. Separation performance data are analyzed and compared as a function of operating conditions. The effect of initial feed concentration on the separation performance and the effect of feed concentration on apparent activation energy are presented. For memb...

Biodiesel production through chemical interesterification of triglycerides requires an excess methyl acetate that must be recovered once the reaction is finished and catalyst neutralized. The present study concerns with purification by pervaporation. PERVAP 2201 was chosen as pervaporation membrane due to its high hydrophilic character makes it suitable for elimination water in acetate. Runs we...

Highly efficient PDMS based membranes with a new type of fluorinated MOF-808 were successfully prepared and used for the first time in pervaporation (PV). Two types ligands i.e. trifluoroacetic acid (TFA) pentafluoropropionic (PFPA) during MOF synthesis. These slightly different size chemical character influenced material properties membranes, roughness, contact angle, surface free energy, ther...

The development of a reactive distillation process for the production of n-butyl acetate by transesterification of methyl acetate with n-butanol is presented. Thermodynamic aspects of the quaternary system n-butyl acetate – n-butanol – methyl acetate – methanol are discussed and UNIQUAC interaction parameters derived using the Dortmund Data Bank (DDB) are given. The reaction kinetics of the het...

Sugar fatty acid esters (SFAE) are well known as bio-surfactants. Their excellent biodegradability as well as the fact that they are tasteless, odorless, nontoxic, non-irritant and non-ionic explains their increasing importance in numerous areas. On the other hand, for a long time, large scale production of SFAE remained mainly in the realms of organic chemistry and chemical processing. Chemica...

this is a comprehensive review of the recent progresses made in the field of zeolite membranes. it describes zeolitic materials and methods of membrane fabrication, followed by a summary of applications for gas separation, pervaporation and separation of liquid mixtures. special attention is called to polymer mixed matrix membranes (mmms) and membranes based on metal organic frame works (mofs)....