Fig. 3. Kinetics of Pb adsorption onto CMTAB: (a) the Pb adsorption capacity and removal efficiency as functions with contact time; (b) fitting of kinetics data by the pseudo-second-order kinetics model. Operating conditions: initial pH, 5.0; biomass
dosage, 2.0 g L−1; initial lead concentration, 100 mg L−1; temperature, 298 K.