Fig. 5

Effect of pH on adsorption of heavy metal ions. Conditions: 15 mg MWCNTs-EDDA; 10 mL metallic ion solutions of Pb(II), Ni(II), and Cr(III) (10 μg mL−1); 10 mL Cu(II) (5 μg mL−1) and 10 mL Cd(II) (2 μg mL−1) for 15 min
Effect of pH on adsorption of heavy metal ions. Conditions: 15 mg MWCNTs-EDDA; 10 mL metallic ion solutions of Pb(II), Ni(II), and Cr(III) (10 μg mL−1); 10 mL Cu(II) (5 μg mL−1) and 10 mL Cd(II) (2 μg mL−1) for 15 min