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Abstract
The recovery of ethyl acetate from dilute aqueous process waste streams commonly found in the specialty chemical and pharmaceutical industry has been shown to be effectively performed by membrane pervaporation. A silicone membrane filled with a zeolite material, “silicalite,”; proved extremely effective in yielding high ethyl acetate selectivities under a variety of processing conditions. Permeate ethyl acetate concentrations in excess of 90% were obtained for processing aqueous feed mixtures from 1 to 8% ethyl acetate. The effects of feed concentration, temperature and permeate‐side pressure were examined. Flux increased with increasing feed concentration and temperature, and decreased with increasing permeate‐side pressure.