The single layer adsorption mechanics on the surface of the
adsorbent can be analyzed by Langmuir isotherm. This model
explains about the uniform adsorption which occurs on the active
sites of the nano-adsorbents. The absorption process is terminated
naturally once all the active sites are occupied by adsorbates. If the
adsorption obeys Langmuir model, Ce/qe versus qe should be a
linear plot. The linear Langmuir adsorption equation is given by the
following equation: