The mass transfer within, the membrane for pure liquid. Polymeric membrane an overview sciencedirect topics. Before the membranes were subjected to pervaporation studies, the membranes sorption studies were carried out. The pervaporation of binary alcoholwater mixtures across polymeric membranes is modeled by combining the maxwellstefan ms diffusion formulation with the floryhuggins fh description of. Trends in design and preparation of polymeric membranes for.
Apart from the evident need for resistant and efficient polymeric membranes for the process, an important parameter to be maximized in all applications is the membrane permeability 6. To combine the advantages of inorganic and polymeric membranes to obtain a high ratio of. Comparison of transport properties of polymer membranes in the pervaporation of methanolmtbe mixture. Nms and embedded polymeric membranes with regard to its synthesis. Author links open overlay panel dihua wu 1 2 3 aoran gao 2 3 xianshe feng 2. Pervaporation is a membrane process for liquid separation, a polymeric or zeolite membrane, usually serves the separating barrier for the process.
Trends in design and preparation of polymeric membranes for pervaporation. C 1968, separation of liquid mixtures using polymer membranes. The selectivity factor and permeate flux of the membrane in the pervaporation of the ethanolwater mixture of 95 wt% ethanol concentration decrease similarly with. Pervaporation of ethanolwater mixture using polymeric membrane 1. Pervaporation study for the dehydration of tetrahydrofuranwater mixtures by polymeric and ceramic membranes. In press, corrected proof what are corrected proof articles. An overview of various types of membranes used in pervaporation dehydration of alcohols. Pervaporation of a benzenecyclohexane mixture through these membranes was carried out in order to study the effect of microphase separated structures on selective permeability. Journal of environmental science and health, part a. This is a pdf file of an unedited manuscript that has been accepted for publication. Strategy for scaleup of sbs pervaporation membranes for. Uncrosslinked and crosslinked polybutadiene membranes were used to investigate the pervaporation of lower alcoholwater mixtures alcohol. Novel perfluorinated polymerbased pervaporation membranes for. Surface modification is a promising method to improve polymeric membranes pervaporation performance.
Salt transport in polymeric pervaporation membrane pdf. Pdf trends in design and preparation of polymeric membranes for. The past decades had witnessed substantial progress and exciting breakthroughs in both the fundamental and application aspect of pervaporation. Pervaporation is an efficient membrane process for liquid separation.
Membranes for dehydration of alcohols via pervaporation. The performance of the dense polymeric membrane can be improved by decreasing the membrane thickness, and by developing new materials. Pervaporation membrane mass spectrometry for investigating membrane mass transport phenomena membrane motivation. For a few decades, membrane pervaporation pv has been considered one of the most. Pvdf membranes were prepared by casting a polymer solution containing. Membrane pervaporation an overview sciencedirect topics. Pdf highlighting thermodynamic coupling effects in. When a membrane is in contact with a liquid mixture, one of the components can be preferentially removed from the mixture due to its higher affinity with, andor quicker diffusivity in the membrane.
1097 127 555 1013 194 665 913 291 1129 1311 564 730 492 1079 802 191 1452 344 647 1559 507 1152 898 1517 1495 719 1229 1283 499 828 906 1000 873 585 660 1101 942 1132