Adsorption of Nitrate onto ZnCl₂-Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

Figure 1

Linear plots of adsorption kinetics: (a) the variation of adsorption capacity with adsorption time at various initial nitrate concentrations; (b) pseudo-first-order adsorption plot; (c) pseudo-second-order adsorption plot; (d) intraparticle diffusion adsorption plot.

(a)

(b)

(c)

(d)