Table 3.

Adsorption isotherm parameters of Malachite green dye.

t/ 5 oC	Langmiur Isotherm			Freundlich Isotherm			D-R Isotherm
	qmax (mg.g–1)	b (L.mg–1)	R2	n	Kf (L.mg–1)	R2	Xm (mg.g–1)	Kdr (L.mg–1)	E (kJ.mol–1)	R2
ZnO	73	0.025	0.95	0.74	2.5	0.93	39	18	0.28	0.75
ZnO-CTAB	60	0.134	1	0.35	14	0.93	47	2.66	0.72	0.96
t / 40 oC	Langmiur Isotherm			Freundlich Isotherm			D-R Isotherm
	qmax (mg.g–1)	b (L.mg–1)	R2	n	Kf (L.mg–1)	R2	Xm (mg.g–1)	Kdr (L.mg–1)	E (kJ.mol–1)	R2
ZnO	70	0.046	0.99	0.49	7.5	0.93	44	9.6	0.38	0.98
ZnO-CTAB	59	0.67	0.96	0.21	27	0.70	53	0.29	2.17	0.91
t/55 oC	Langmiur Isotherm			Freundlich Isotherm			D-R Isotherm
	qmax (mg.g–1)	b (L.mg–1)	R2	n	Kf (L.mg–1)	R2	Xm (mg.g–1)	Kdr (L.mg–1)	E (kJ.mol–1)	R2
ZnO	64	0.054	0.99	0.47	7.2	0.91	43	8.5	0.40	0.93
ZnO-CTAB	58	0.17	0.99	0.34	15.2	0.95	58	1.96	0.84	0.94