The positive values ofS◦ showed the affinity of the adsorbent for adsorbate and the increasing randomness at the solid–solution interface with some structural changes in the adsorbates and adsorbents during the adsorption process
The positivevalues ofS◦ showed the affinity of the adsorbent for adsorbateand the increasing randomness at the solid–solution interface withsome structural changes in the adsorbates and adsorbents duringthe adsorption process