A waste water $($volume $1$ m$)$ contains $0\mathrm{.}21$ kg phenol$/$m$.$ A total of $1\mathrm{.}40$ kg of fresh granular AC is added to the solution, mixed thoroughly to reach equilibrium. Using isotherm in Example $12\mathrm{.}1-1,$ calculate the final equilibrium values and percentage of phenol adsorbed by the AC$.$