Polyurethanefoamcube (PUC)was employed to investigate the removal efficiency of Ni(II) ions from aqueous solution.The effec t of various parameters such as pH,contact time, temperature,adsorbent dosage,adsorbent size and initial metal concentration was studied in batch experiments. The raw and modified PUC were characterized by FTIR and SEM. Adsorption isotherms results showed that Freundlich isotherm (R2 =0.988)