????? ?????? ?????? ??????? ?? ???? ??????? ???????? ???????? ?????? ?????? ????????

الملخص

   In this study , the adsorption of an industrial blue dye  was investigated by using  date palm tree waste . The effect of the process parameters such as, contact time ; adsorbate concentration, ( pH) and (temperature ) are reported . "Nearly 2-3 hr of contact time are found to be sufficient for the adsorption to reach equilibrium" (A better fixation was obtained at acidic pH (2) and  room temperature 25^?C.