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- W2971851580 abstract "Conventional distillation failed to separate a ternary azeotropic mixture of ECH, IPA and water (50/30/20 w/w, %) exist in the epoxy resin manufacturing process. Thus, we prepared a PVA-tetraethyl orthosilicate organic–inorganic hybrid membrane and modified the membrane by layer-by-layer deposition of a PVAm/silicotungstic acid polyelectrolyte for the pervaporation (PV) dehydration of ECH/IPA/water mixtures. In PV experiments at 30 °C, the flux decreased from 0.14 to 0.05 kg m−2 h−1 and separation factor increased from and 2099 to 13,320 with TEOS addition in the PVA membrane was observed. And for the layer by layer deposition on PVA-TEOS (4) membranes flux increased and separation factor decreased from 0.14 to 0.28 kg m−2 h−1 and 2099 to 416 with the number of layer of deposition were observed respectively. On varying the feed water content from 20 to 10 wt. %, the pervaporation flux at 30 °C decreased from 0.22 to 0.0066 kg m−2 h−1 and the separation factor increased from 1061 to 9094 was observed. By applying the Arrhenius equation, permeation activation energies of ECH and IPA (97.42 and 111.96 kJ mol-1, respectively) are higher than that of water (40.88 kJ mol−1) were reported for the layer by layer membrane." @default.
- W2971851580 created "2019-09-12" @default.
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- W2971851580 date "2020-01-01" @default.
- W2971851580 modified "2023-10-16" @default.
- W2971851580 title "Surface-modified polyvinyl alcohol (PVA) membranes for pervaporation dehydration of epichlorohydrin (ECH), isopropanol (IPA), and water ternary feed mixtures" @default.
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- W2971851580 doi "https://doi.org/10.1016/j.jiec.2019.09.007" @default.
- W2971851580 hasPublicationYear "2020" @default.
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