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SECTION B (F Instructions: Answer ALL questions in a separate answer book 6. A dust collector device is designed to remove a particulate matter 2.5m(PM2.5). At an air flow rate of 180m3s1, the PM2.5 is emitted at a concentration of 125,000gm3. The device removes 0.48 metric ton per day. a) Develop a general material balance in a black box diagram. b) Determine the emission concentration. c) Determine the recovery percentage of PM2.5