Table 3. Kinetics Modeling Parameters of CV Dye Sorption onto MPBC Sorbent.

Kinetic models		Results
PFORE	k1 (min–1)	0.04
	qe (mg g–1)	7.49
	R2	0.98
PSORE	k2 (g mg–1 min)	0.01
	qe (mg g–1)	11.66
	R2	0.99
IPDE (Step I from 1 to 10 min)	ki (mg g–1 min0.5)	2.72
	X (mg g–1)	–1.66
	R2	0.95
IPDE (Step I from 10 to 60 min)	ki (mg g–1 min0.5)	0.81
	X (mg g–1)	4.58
	R2	0.96
IPDE Step III from (60 to 180 min)	ki (mg g–1 min0.5)	0.03
	X (mg g–1)	10.60
	R2	0.85
Elovich equation	α (mg g–1 min–1)	4.62
	β (g mg–1)	0.50
	R2	0.95