fig7
Figure 7. (A) Effect of humic acid on PFOA adsorption on 0.1 M ChCl-HC; (B) Regeneration study using 50% ethanol (Experimental conditions: PFOA concentration: 20 mg/L, Adsorbent dose: 400 mg/L, CaCl2: 20 mM, Temperature: 298 K, and RPM: 250). PFOA: Perfluorooctanoic acid; ChCl-HC: ChCl-modified hydrochar; RPM: revolutions per minute.
