Table 4.

Thermodynamic parameters for the adsorption of DCF onto chitosan grafted derivatives.

Adsorbent	C i	T	Q e	K c	ΔG 0	ΔH 0	ΔS 0
	(mg L−1)	K	mg g−1		kJ mol−1	kJ mol−1	kJ mol−1 K−1
CsSUC	5	298	8.42	5.25	−4.11	21.13	0.084
		308	8.61	6.14	−4.65
		318	9.05	9.00	−5.81
	50	298	32.04	0.47	1.87	17.01	0.051
		308	38.21	0.61	1.25
		318	42.35	0.72	0.85
	100	298	38.44	0.23	3.59	13.85	0.034
		308	44.02	0.28	3.24
		318	50.04	0.33	2.90
CsMAL	5	298	8.04	4.04	−3.43	32.28	0.121
		308	9.13	9.03	−5.63
		318	9.16	9.04	−5.81
	50	298	26.02	0.35	2.59	7.91	0.018
		308	30.04	0.43	2.17
		318	30.21	0.44	2.24
	100	298	30.04	0.18	4.30	5.87	0.005
		308	32.12	0.19	4.25
		318	34.34	0.20	4.19
CsITA	5	298	8.22	4.56	−3.76	36.32	0.134
		308	8.61	6.14	−4.65
		318	9.24	11.50	−6.46
	50	298	62.03	1.63	−1.21	22.06	0.079
		308	72.10	2.57	−2.42
		318	74.02	2.85	−2.77
	100	298	64.09	0.47	1.87	23.45	0.073
		308	82.08	0.69	0.93
		318	92.04	0.85	0.42
CsTACON	5	298	8.81	7.33	−4.94	17.70	0.076
		308	9.02	9.00	−5.63
		318	9.23	11.50	−6.46
	50	298	66.04	1.94	−1.64	19.30	0.070
		308	72.04	2.57	−2.42
		318	76.52	3.17	−3.05
	100	298	78.01	0.64	1.11	12.95	0.040
		308	90.32	0.82	0.51
		318	94.21	0.89	0.32