Research Article

Sorption of Ammonium Ions onto Natural and Modified Egyptian Kaolinites: Kinetic and Equilibrium Studies

Figure 5

Pseudo-second-order kinetic plots for the sorption of onto all investigated sorbents at different initial concentrations (sorbent dose = 0.1 g; pH = 7; temperature= 30°C; contact time = 2 h).
935854.fig.005a
(a)
935854.fig.005b
(b)