Two thousand kilograms per minute of a slurry containing 10 % CaCO3 are to be filtered in a rotary vacuum filter. The filter cake from the filter contains 60 wt% water. Assume all CaCO3 from the slurry is recovered in the filter cake. This cake is placed into a drier and dried to a moisture content of 9.09 kg H2O/100 kg bone dry CaCO3. The humidity of the air entering the drier is 0.005 kg H2O/kg dry air, and the humidity of the air leaving the drier is 0.015 kg H2O/kg dry air.

a. What is the quantity of water (kg/minute) removed by the filter?
b. What is the flow rate of air on a water-free basis (kg dry air/minute) through the drier?