A Chemical manufacturer emits air with 250 PPM of toluene at 1 atm and 30 degrees C at a flow rate of 10,000 cubic meters per minute.The air is routed to a biofilter to control total emissions to less than 110 kg/day of toluene.The biofilter contains a mix if GAC and compost with 52% voids, it is 1.6 meters deep and 200 square meters. the pressure drop prior to the biofilter is 400 Pa.
(a)determine the control efficiency needed to meet the emission criteria.
(b)predict the total pressure drop including the biofilter,in inches of water.