Kinetics, Equilibrium, and Thermodynamics of the Sorption of Bisphenol A onto N-CNTs--Cyclodextrin and Fe/N-CNTs--Cyclodextrin Nanocomposites

Figure 6

(a) Adsorption isotherm of BPA in aqueous solution (1), (b) linearized Langmuir isotherm (3) for BPA adsorption, (c) linearized Freundlich isotherm (5) at temperatures 298 K, 308 K, and 318 K, and (d) Langmuir and Freundlich isotherms ((2) and (4), resp.) obtained using nonlinear fitting onto Fe/N-CNTs-β-CD at 298 K. Sorbent dose = 0.05 g/50 mL solution.

(a)

(b)

(c)

(d)