The removal of benzene by holding it on Activated Carbon can be expressed by the Freundlich isotherm given below.

Here, c (mg/L) and q (mg/g) show the concentration of benzene and the capacity of activated carbon, respectively. A solution with 0.50 mg/l benzene at a temperature of 25 oC will be treated using a batch reactor. 0.01 mg/l benzene is required in the water coming out of the treatment. Calculate the amount of activated carbon required, according to the fact that the specific surface area of Activated Carbon to be used in the batch reactor is known to be 650 m2/g.

9 benz 0.533 benz = 50.1 c