Deposition of a few toxic metal ions under induced EMF using blast furnace granulated slag

摘要

Effect of the applied EMF on the rate of electro-deposition of selected toxic metal ions [Pb(Ⅱ), Hg(Ⅱ), Ni(Ⅱ) and Cu(Ⅱ)] in aqueous solutions in presence of blast furnace granulated slag of steel plant has been studied. An external EMF of 4 V is found to enhance the rate of electrodeposition of Hg(Ⅱ), Cu(Ⅱ), Pb(Ⅱ) and Ni(Ⅱ) by 24, 32, 9 and 9.7%; respectively, whereas a decrease in the pH of the solution enhances the removal of metal ions.