X=32 kpa

Question 2 Suspended plant cell is filtered in the laboratory using a 0.56 m diameter funnel and a vacuum pressure drop of *X kPa. Table Q2 shows data obtained from cell filtration process to recover the cell solids. The following information is given: Cs= 22 g/L, u = 4 x103 kPa Table Q2: Data obtained from suspended cell filtration Time (s) Volume (L) 120 9 180 11.5 360 17 540 22.5 900 28 1200 32 a. Determine Rm and specific cake resistance, a. (10 marks) b. Estimate the size of the filter (unit: m) to filter 4000 L of cell suspension in 30 minutes at the same pressure. The resistance of the filter medium can be neglected. Use the same specific cake resistance in part (a). (10 marks)