Table 2.

The experimental and determined kinetic model parameters for the sorption of DCH onto P, PB₁, PB₂ and PB₃ microparticles.

	P	PB1	PB2	PB3
qe,exp (mg/g)	100.500	157.860	150.400	144.100
Lagergren model
qe (mg/g) a	94.960	148.779	142.18	136.109
k1 × 102 (min−1) b	3.024	3.984	3.767	3.330
R2 c	0.970	0.968	0.970	0.971
χ2 d	38.626	92.238	79.409	72.246
Ho model
qe (mg/g) a	108.280	163.543	156.750	151.615
k2 × 104 (g/mg·min) e	3.385	3.247	3.175	2.812
R2 c	0.992	0.996	0.996	0.996
χ2 d	9.961	12.427	10.369	10.123
Elovich model
α (mg/g·min) f	7.593	22.864	19.550	14.577
β (g/mg) g	0.044	0.034	0.035	0.035
R2 c	0.994	0.992	0.992	0.994
χ2 d	8.015	24.189	22.467	15.626

^a q_e—the amount of DCH sorbed onto the microparticles at equilibrium; ^b k₁—the rate constant of the pseudo-first-order model; ^c R²—correlation coefficient; ^d χ²—chi-square test; ^e k₂—the rate constant of the pseudo-second-order model; ^f α—the initial sorption rate; ^g β—the desorption constant.