Usually, for a good adsorbent
1 < n < 10. A smaller value of n indicates better adsorption and formation
of relatively strong bond between adsorbate and adsorbent,
respectively, qm (mg/g) is the amount of adsorption corresponding
to complete monolayer coverage and b (l/mg) is the Langmuir constant
related to the energy or net enthalpy of adsorption