Table 2. The parameters of Langmuir and Freundlich fitting of Cu(II) adsorption on oMWCNTs.

	Langmuir constants			Freundlich constants
T(K)	qmax(mg·g−1)	b	R2	KF(mg1−n· Ln·g−1)	n	R2
298	29.69	0.33	0.962	9.34	0.31	0.788
318	32.31	0.29	0.957	9.54	0.32	0.805
338	33.97	0.44	0.965	11.72	0.29	0.824