Fig. 6
From: Adsorption of Fe-modified peanut shell biochar for Pb(II) in mixed Pb(II), Cu(II), Ni(II) solutions
FT-IR spectra of Fe@BC and BC before and adsorbed by Pb(II), Cu(II), and Ni(II) in mixed metal ions solution (conditions: V = 80 mL, pH = 4.0, C0 = 100 mg/L, t = 24 h, T = 25 °C).
