The preliminary design for a vapor-phase adsorber specified a bed of 6 x 16-mesh carbon 6 ft in diameter and 4 ft deep, with a superficial velocity of 60 ft/min. However, the estimated pressure drop of 16 in. H₂O is more than twice the desired value. If the same amount of carbon is used in a wider and shallower bed, how will that affect the pressure drop and the steepness of the breakthrough curve? Suggest an appropriate design for the bed.