a) Data for the laboratory filtration of CaCO3 slurry in water at 298.2 K (25°C) are reported as follows at a constant pressure (-Ap) of 338 kN/m². The filter area of the plate-and-frame press was A= 0.0439 m² and the slurry concentration was Cs = 23.47 kg/m³. Calculate the constants a and Rm from the experimental data given, where t is time in s and V is filtrate volume collected in m³. Ans Rm= 1.079x10^11 a=1.81x10^11 b) The same slurry used is to be filtered in a plate-and-frame press having 20 frames and 0.873 m² area per frame. The same pressure will be used in constant pressure filtration. Assuming the same filter cake properties and filter cloth, calculate the time to recover 3.37 m³ of filtrate. Ans= 269.7 T V 4.4 0.498 x10-3 9.5 1.000 x10-3 16.3 1.501 x10-3 24.6 2.000 x10-3 34.7 2.498 x10-3 46.1 3.002 x10-3 59.0 2.506 x10-3 73.6 4.004 x10-3 89.4 4.502 x10-3 107.3 5.009 x10-3