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REDUCTION OF CONCENTRATION POLARIZATION IN PERVAPORATION USING VIBRATING MEMBRANE MODULE
Citation:
Vane*, L M., F R. Alvarez*, AND L. Giroux. REDUCTION OF CONCENTRATION POLARIZATION IN PERVAPORATION USING VIBRATING MEMBRANE MODULE. doi:10.1016/S0376-73, W.J. Koros (ed.), JOURNAL OF MEMBRANE SCIENCE. Elsevier BV, AMSTERDAM, Netherlands, 153(2):233-241, (1999).
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Description:
A vibrating membrane module currently marketed for filtration applications was evaluated for the separation of volatile organic compounds (VOCs) from aqueous solutions by pervaporation. Preliminary screening experiments with three VOCs, four silicone membranes, and in the presence and absence of a surfactant were performed to determine if further consideration of the vibrating module for a field demonstration project was warranted. The primary process variables studied were vibrational amplitude and liquid flow rate. The vibrations greatly reduced concentration polarization in the system, enhancing mass transport by an order of magnitude. Mass transfer coefficients for the vibrating module compared favorable with traditional spiral wound modules.
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REDUCTION OF CONCENTRATION POLARIZATION IN PERVAPORATION USING VIBRATING MEMBRANE MODULE