Adsorption kinetics parameters of the different models for Co(ii) adsorption on the CMC and PCMC beads.

Initial concentration (mg L−1)		Pseudo-first-order			Pseudo-second-order			Intraparticle diffusion
		Q e (mg g−1)	K 1 (h−1)	R 2	Q e (mg g−1)	K 2 (g mg−1 h−1)	R 2	K 3 (mg g−1 h−0.5)	C	R 2
50	CMC	17.76	0.0483	0.9949	21.71	0.0039	0.9988	1.6951	3.141	0.8550
	PCMC	10.77	0.2594	0.9618	23.78	0.0529	0.9998	3.6973	9.870	0.8243
100	CMC	28.18	0.0316	0.9723	32.72	0.0020	0.9935	2.4965	3.642	0.9519
	PCMC	34.92	0.3941	0.9894	45.96	0.0176	0.9992	8.3918	13.22	0.8770
200	CMC	30.22	0.0251	0.9886	37.44	0.0017	0.9861	2.7746	4.657	0.9733
	PCMC	40.35	0.6716	0.9936	50.05	0.0168	0.9980	14.201	8.369	0.9110