Fig. 13

Van’t Hoff plots for Pb2+ adsorption onto HA-100, HA-500, and HA-900 at various temperatures (CPb2+=20 ppm; m = 0.25 g; pH = 9; t = 3 h).

Van’t Hoff plots for Pb2+ adsorption onto HA-100, HA-500, and HA-900 at various temperatures (CPb2+=20 ppm; m = 0.25 g; pH = 9; t = 3 h).