The Date palm leaves were collected from Ouargla (Algeria) region palm trees, the collected materials
were washed with distilled water for several times to remove all the dirt particles and laid flat on clean
table to dry. Dry leaves were grounded with grinder. After, the leaves particles were sieved by using
available sieves of nominal sizes (74, 149, and 250 ȝm). This produced a uniform material for the
complete set of adsorption tests, which was stored in an air-tight plastic container for all investigations.
Particle sizes of 74ȝm were used in all experiments throughout this work; the other sizes 149 and 250 ȝm
were used only for particle size effect study. The main components of the date palm leaves are cellulose
38.10% , hemicellulose 22.74%, lignin 11.95%, ash 7.71%.