Removal of Some Heavy Metals from Inorganic Industrial Wastewaters by Ion Exchange Method 1 (original) (raw)

—Removal of heavy metals such as Cu(II), Cd(II), Zn(II), Ni(II) and Pb(II) from wastewaters in several industrial areas of Kerman, Iran, was evaluated by using ionnexchange method. Dowex 50WX8 (H +) resin was selected as suitable adsorbent for reduction of toxic elements in wastewater. The most effec tive sorption was observed within in pH between 4–6, fow rate of 4 mL min –1 and amount of 200 mg resin. Sorbent capacities for Cu(II), Cd(II), Zn(II), Ni(II) and Pb(II) were 45; 50; 50; 40 and 60 mg/g respec tively. The results determine that exchanger resin is extremely effective in lowering the metal content of wastewaters.