Adsorption experiments were conducted by varying pH, contact time, adsorbent dose, temperature and
Methylene blue concentration. The experiments were carried out in 250 mL Erlenmeyer flasks and the
total volume of the reaction mixture was kept at 100 mL. The equilibrium concentrations of the solution
samples were analyzed using UV-Vis spectrophotometer (Model SHIMADZU 1800) Standard calibration
curve was prepared by recording the absorbance values of various concentration of methylene blue dye at
maximum absorbance of wavelength (668 nm). The surface of date palm leaves fibers were observed with
a Hitachi S4700 field emission scanning electron microscope after coating them with 4nm of
platinum/palladium in a Agar model 208HR high resolution sputter coater. A HANNA instrument pH
meter was used for pH measurements, A magnetic stirrer was used to agitating the samples.