Question: Pervaporation is to be used to separate ethyl acetate (EA) from water. The feed rate is 100,000 gallday of water containing 2.0 wt% EA at

Pervaporation is to be used to separate ethyl acetate (EA) from water. The feed rate is 100,000 gallday of water containing 2.0 wt% EA at 30°C and 20 psia. The membrane is dense polydimethylsiloxane with a 1-μm-thick skin in a spiral-wound module that approximates crossflow. The permeate pressure is 3cmHg. The total measured membrane flux at these conditions is 1.0 L/m2-h with a separation factor given by (14-36) of 100 for EA with respect to water. A retentate of 0.2 wt% EA is desired for a permeate of 45.7 wt% EA. Determine the required membrane area in m2 and estimate the temperature drop of the feed.

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