fig3
Figure 3. Removal efficiency and adsorption capacity of Pristine HC, 0.05 M ChCl-HC, and 0.1 M ChCl-HC (A) without CaCl2 and (B) with CaCl2 (Experimental conditions: PFOA concentration: 20 mg/L, Adsorbent dose: 300 mg/L, CaCl2: 20 mM, Temperature: 298 K, and RPM: 250). ChCl-HC: ChCl-modified hydrochar; PFOA: perfluorooctanoic acid; RPM: revolutions per minute.
