Phenol is removed from waste water by a batch adsorption using activated carbon. 4.0m3 of the waste water containing 0.25kg/m3 of phenol is mixed with 4kg of fresh adsorbent. (a) Detach the isotherm on page 6 and attach it to the answer booklet for submission. Determine the exit phenol concentration of the waste water. (8 marks) (b) Explain the limitations of a batch adsorption when compared to a continuous adsorption process. (3 marks) (c) Sketch the setup of a continuous adsorption process using two adsorption columns in parallel