Indigo Carmine and 2,6-Dichlorophenolindophenol Removal Using Cetyltrimethylammonium Bromide-Modified Palm Oil Fiber: Adsorption Isotherms and Mass Transfer Kinetics

Figure 13

Linear regression of adsorption kinetics of (a) pseudo-first-order, (b) pseudo-second-order, (c) intraparticle diffusion, (d) Elovich, (e) Boyd, and (f) external mass transfer.

(a)

(b)

(c)

(d)

(e)

(f)