A reverse osmosis membrane has a hydrodynamic permeance of Lp = 4.10 ms.Pal and a salt rejection R = 0.995. The membrane is used to produce potable water from a saline solution of the following average composition: NaCl = 25 kg m-3, CaCl2 = 4.2 kg m?, Na2CO3 = 6.4 kg m, NaHCO3 = 2.0 kg m?. The applied hydrostatic pressure is 6.5-10 Pa. Calculate the membrane flux. MW-NaCl = 58.4; MW-Na2CO3 = 105.9; MW-NaHCO3 = 84.0; and MW-CaCl2 =110.9. The reflection coefficient and the osmotic coefficient are assumed to be 1. A reverse osmosis membrane has a hydrodynamic permeance of Lp = 4.10 ms.Pal and a salt rejection R = 0.995. The membrane is used to produce potable water from a saline solution of the following average composition: NaCl = 25 kg m-3, CaCl2 = 4.2 kg m?, Na2CO3 = 6.4 kg m, NaHCO3 = 2.0 kg m?. The applied hydrostatic pressure is 6.5-10 Pa. Calculate the membrane flux. MW-NaCl = 58.4; MW-Na2CO3 = 105.9; MW-NaHCO3 = 84.0; and MW-CaCl2 =110.9. The reflection coefficient and the osmotic coefficient are assumed to be 1