Fig. 29. (A) Representation of the % Hg removal and log K_d values versus the initial Hg²⁺ concentration for K₆MS. (B) % Hg removal vs. pH (initial Hg²⁺ concentration = 441 ppm, V m^–1 = 500 mL g^–1). (C) % Hg removal vs. time (min) (initial Hg²⁺ concentration = 441 ppm, V m^–1 = 500 mL g^–1). (D) Fitting of the kinetic data with Lagergren's equation (red solid line).