Question 1

Table 1 below shows the data for the filtration of pineapple juice to produce clarified fruit juice at 298.2 K.

Table 1: Total volume of filtrate collected at a certain time

V 103 (m3)	t (s)
0.5	17.3
1.0	41.3
1.5	72.0
2.0	108.3
2.5	152.0
3.0	201.7

The filtration process was conducted at a constant pressure of 46.2 kN/m². The area of the plate-and-frame press was 0.0439 m² and the pulp concentration was 23.47 kg solid/m³ filtrate.

a) Convert the data in Table 1 into a graph. You can either use Excel or graph paper. Your graph should be self-explanatory.

(2 marks)

b) Using the graph in (a), estimate the specific cake resistance and the resistance of the filter medium to filtrate flow.

(5 marks)