Effect of low flow rate on pervaporation of 1,2-dichloroethane with novel polydimethylsiloxane composite membranes

Crosslinked oligosilylstyrene–polydimethylsiloxane composite membranes were used to separate trace 1,2-dichloroethane (1,2-DCE) from the mixtures of 1,2-DCE and water by pervaporation. The performances of pervaporation were evaluated by low feed flow rates (0.35–1.0l/min), corresponding to Reynolds number from 79 to 220. The resistance-in-series model and semi-empirical Sherwood correlations were employed to study the transfer characteristics. …