“…Some other studies reported that most of the biosorbion was achieved in 5 to 15 min. The fluctuation of equilibrium period was recorded by many workers and depended in many factors of which the type and nature of the biomass, pH, metal ions, and physicochemical properties of the biosorption process (Saglam et al, 1999;Kacar et al, 2000;Abu Al-Rub et al, 2004;Herrero et al, 2005;Bayramoglu et al, 2006;EL-Sherif et al, 2008;Parameswari et al, 2009;Al Garni et al, 2009).…”