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2. A single pass reverse osmosis plant is used for the desalination of seawater (3.5wt% NaCl ). The membranes used have a salt rejection of
2. A single pass reverse osmosis plant is used for the desalination of seawater (3.5wt% NaCl ). The membranes used have a salt rejection of 99.3% and a pure water flux of 1500l/m2-day, measured at 25 bar. The applied pressure is 55 bar and the temperature is 25C. Use van't Hoffs' law to calculate the osmotic pressure. You may choose for the recovery to be 0.3,0.4,0.5 or 0.6 . a. Which recovery would you choose and why? b. Determine the permeate concentration at the chosen recovery. c. Calculate the membrane area for a small installation with a capacity of 1 m3/hr
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