A novel model based on cluster formation for pervaporation separation of polar components from aqueous solutions

Investigating the influence of diffusional coupling on mixture permeation across porous membranes

“…ZIF-8) and mixed matrix membranes [49][50][51]. There is considerable evidence in the literature to indicate that hydrogen bonding, and consequent cluster formation manifests in LTA-4A [52,53], MFI [54][55][56][57][58][59][60][61][62][63][64], ZIF-8 [65], Nafion [66], PDMS [67], NaX [68][69][70][71][72], and Chitosan [73].…”

“…Further research is necessary to generalize the Maxwell-Stefan formulation in a manner that explicitly allows for cluster formation, by defining a cluster to be a pseudo-species in the mixture. A step in this direction has been taken by Nasiri and Aroujalian [67] who model water/ ethanol pervaporation across PDMS membrane by explicitly allowing for dimer formation.…”

Comparison of pervaporation models with simulation of hybrid separation processes

“…Among the numerous and diverse pervaporation models described in the literature, the most popular ones are the pore-flow [23][24][25], the resistancein-series [26,27], Maxwell-Stefan theory-based [28], and the most widely used solution-diffusion model [29][30][31][32][33][34]. According to the latter, the mechanism of pervaporation is defined by the following steps:…”

Modeling of transport and separation in a thermopervaporation process

“…(29)). In the literature, the coupling between the EtOH and H 2 O flows through PDMS is indicated as a reason for the changes of EtOH and H 2 O diffusivities in PDMS in contact with their mixture of various EtOH contents [39,45].…”