The basic filtration equation is given as where, is volume of the filtrate ; is the filtration area, a is specific cake resistance, μ is viscosity of the filtrate, and is the concentration of the solids in the feed slurry. In a 20 minutes constant rate filtration, 5 m of filtrate was obtained. If this is followed by a constant pressure filtration, how much more time in minutes, it will take for another 5 m of filtrate to be produced ? Neglect filter medium resistance, ; assume incompressible cake.

The basic filtration equation is given as where, is volume of the fi

1.	The basic filtration equation is given as where, is volume of the filtrate ; is the filtration area, a is specific cake resistance, μ is viscosity of the filtrate, and is the concentration of the solids in the feed slurry. In a 20 minutes constant rate filtration, 5 m of filtrate was obtained. If this is followed by a constant pressure filtration, how much more time in minutes, it will take for another 5 m of filtrate to be produced ? Neglect filter medium resistance, ; assume incompressible cake.
A.	10
B.	20
C.	25
D.	30
Answer» C. 25

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