A reverse-osmosis membrane has a kω value of 2.5 × 10-4 litcrs/m2•s•bar and an average ks value of 3.5 × 10-4 litcrs/m2s for TDS. Find the expected permeate TDS concentration of chloride if the feed concentration is 4500 mg/l and the system operates at a gauge pressure of 35 bar on the feed-concentrate side of the membrane. Assume that the permeate has negligible osmotic pressure and is at atmospheric pressure.
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