Pervaporation-based hybrid process: a review of process design, applications and economics

Comparison of pervaporation models with simulation of hybrid separation processes

“…However, membrane units coupled with other separation methods (distillation, liquid-liquid extraction, adsorption, etc.) form the so-called hybrid separation processes that are feasible and cost-effective solutions [16,17]. Distillation is still the most popular separation method for a wide range of industrial problems (e.g.…”

“…In case of alcohol dehydration, pervaporation is more efficient in that range of feed concentration where distillation is very inefficient, while at higher feed water concentrations distillation is the more reasonable choice. Therefore in certain cases the combination of them in a hybrid process can be the most economical option [17,21]. For adequate design and operation, proper modelling of the pervaporation process is inevitable.…”

Dynamically formed inner skin hollow fiber polydimethylsiloxane/polysulfone composite membrane for alcohol permselective pervaporation

“…Distillation is traditionally used to recover ethanol from dilute fermentation solution, which has energy and capital cost disadvantages [5]. In recent decades, pervaporation has gained increasing attention for the recovery of ethanol from broth due to its operational simplicity, nontoxicity to microorganism, and economical superiority [6]. Currently, the plate-and-frame is the dominating module configuration employed in pervaporation.…”

Ethyl oleate production by means of pervaporation-assisted esterification using heterogeneous catalysis

“…A classical example is the production of esters, which are traditionally obtained by reacting an organic acid and an alcohol in the presence of mineral acids, the homogeneous catalyst. A major drawback in such reactions is the limit established by the thermodynamic equilibrium, which requires the addition of a separation step to remove one of the products and, thus, shift the equilibrium towards the ester production (Lipnizki et al, 1999). A large excess of one reactant leads to equilibrium displacement, although separation costs are increased.…”