a) Calculate osmotic pressure for 6000 mg/L NaCl at 25 deg C with osmotic co-efficient of 0.98
b) The feed of a UF membrane is seeded with MS-2 bacteriophage virus. On sampling we find 110 colony forming units (cfu)/mL in the feed and 70 cfu/mL in the permeate. Calculate rejection and log removal.
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