Eq. (2) are solved for i knowing the molar flow of the feed, the total pressure, the saturation vapor pressure of water (determined from the effluent temperature) and relative humidity in each of the effluent streams. The value of i was determined from the mass balances at both the anode and cathode and checked for consistency to be the same within 5%. The water removal rates at the anode and cathode are given by the molar flows of the effluents multiplied by the mole fraction of water in the effluent streams, and are given by Eq. (3).