Table 4.

Kinetics parameters for the adsorption of AR9, AR13, and AB92 onto CAmGs 1‒3, determined by fitting to the pseudo-second order kinetic model.

Dye	Adsorbent	qe, t = 800 min a/mg·g−1	k2/g mg−1·min−1	qe,cal/mg·g−1	R2
AR9	CAmG 1	405	8.32 × 10−5	411	0.999
	CAmG 2	615	4.79 × 10−5	621	0.998
	CAmG 3	845	4.15 × 10−5	850	0.999
AR13	CAmG 1	396	1.23 × 10−5	398	1.000
	CAmG 2	633	6.35 × 10−5	644	1.000
	CAmG 3	849	4.36 × 10−5	852	0.999
AB92	CAmG 1	344	1.15 × 10−5	346	0.999
	CAmG 2	530	7.34 × 10−5	532	1.000
	CAmG 3	767	3.28 × 10−5	772	0.997

^a q_t value at the contact time of 800 min.