. 2015 Jul 29;5:12638. doi: 10.1038/srep12638

Table 3. Parameters of pseudo-second-order kinetic model for the adsorption of crystal violet onto Fe₃O₄ coated biochar.

C₀(mg/mL)	Q_e,exp(mg/g)	Pseudo-second-order kinetic model
C₀(mg/mL)	Q_e,exp(mg/g)	K₂ × 10⁻⁶(g/mg·min)	Q_e,cal	R²
50	49.75	1.02	49.11	0.9802
100	99.18	0.42	98.11	0.9810

Table 3. Parameters of pseudo-second-order kinetic model for the adsorption of crystal violet onto Fe3O4 coated biochar.