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Dynamic adsorption and desorption profiles of HMs on EDAR at 25 °C. (a) Adsorption breakthrough curves (experimental conditions: [HMs] = 0.5 mM, flow rate was 2.0 mL/min at pH 5.0); (b) desorption of Pb(II) from EDAR column loaded with 1.63 mmol/g Pb using 0.1 mol/L HCl with a flow rate of 4 mL/min, and 7 h desorption time followed by 0.2 mol/L NaHCO3; and (c) breakthrough curves for Pb(II) on EDAR that had been subjected to successive regeneration treatments.
