ABSTRACT. Biosorption is a cost effective tool for removing heavy metals from aqueous solutions. In the present study, M. azedarach biomass has been used biosorption of Ni(II) ion solution. The effect pH, contact time, concentration and temperature were separately studied. optimum pH was found to be 6.0. 92% founded, when 25 mg/L initial concentrations at room temperatures in 60 min. It also ob...