Abstract
In this work, the effects of various operating parameters on the membrane performance in separation of water from methanol by pervaporation (PV) using a commercial poly (vinyl alcohol) (PVA) membrane have been studied. Experimental results were obtained at different feed temperatures (30–60°C) and permeate pressures (1–10 mm Hg) as well as concentrations of 1–10 wt% water in feed. Investigations indicate that increasing feed temperature and vacuum (lowering permeate pressure) increase flux and selectivity resulting in improvement of membrane performance. Also, increasing water concentration in feed from 1 to 10 wt% increases permeate flux from 0.4 to 0.6 kg/hm2 while selectivity first decreases from 10.6 to 4.8 and then increases to 6.8.
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