: Currently, the environmentally friendly energy source is an important renewable fuel sources. Therefore, biofuel purity has been developed, especially the removal of phenols, which are harmful to humans and engines. By using the selective adsorbent faujasite zeolite, a porous three dimensional structure. The unit cells were composed of Si or Al linked to 4 O atoms, thus studied the effect of the Si / Al ratios of the phenolic absorber form the phenolic adsorption experiment and adsorption regeneration. Together with theoretical computation and simulation method for the effect of acid sites in different Si/Al ratios to intreation between phenol and protonated faujasite.