Question No. 2 (20 Points) An air stripping tower is to be designed to lower the ethylbenzene (C8H10) concentration in a contaminated groundwater from 5mg/L to 30ug/L. Use the tabulated data for water, air and packing material, and determine the following design parameters for this stripping tower; a) The air flow rate in (m3/min). b) The diameter of the stripping tower in (m). c) The height of each transfer unit (HTU) in (m) and number of transfer units (NTU). d) The total height of the air stripping tower ZT in (m). Note: (ZT=20%Z) g(lg)Qm23.28Cfl0.1