Figure 14.
Elution of Cu(II), Cd(II), Zn(II), Co(II) and Pb(II) from the metal-loaded (a) BC-CS 1-1, (b) BC-CS 2-1 and (c) BC-CS 4-1, using HNO3, HCl and H2SO4 at a concentration 1 mol/L in three sorption–desorption cycles.
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