2. (35 points) A wastewater solution having a volume of 2.5 m contains 0.25 kg phenol / m of solution. This solution is mixed thoroughly in a batch process with 3.0 kg of granular activated carbon until equilibrium is reached. a. Use the isotherm from Example 3-2 and calculate the final equilibrium values and the percent phenol extracted. b. If we want to remove 90% phenol, how much activated carbon should be added to the solution? Plot both the isotherm and mass balance curves on the q versus c chart. c. You find another isotherm in literature that can be used to describe phenol-activated carbon data 0.421 c Rework your answers for parts (a) and (b). 0.0315+c as a Example 3-2 (only on Canvas) Batch tests were performed in the laboratory using solutions of phenol in water and particles of granular activated carbon. The equilibrium data at room temperature are shown below as the dependence of phenol surface concentration on the equilibrium concentration in the solution. Determine the isotherm that fits the data. C kg phenol m solution) 0.322 0.117 4, kg phenol kg carbon 0.150 0.122 0.039 0.094 0.059 0.0061 0.0011 0.045