Attapulgite Nanofiber-Cellulose Nanocomposite with Core-Shell Structure for Dye Adsorption

Table 4

The isotherms parameters for methylene blue adsorption onto AC2.

(°C)	Langmuir model			Freundlich model			Dubinin-Radushkevich model			Sips model
								(kJ/mol)
25	11.2284	4.6800	0.9365	0.2410	8.8710	0.9282	8.7615	6.3976	0.8012	123.1803	0.0795	0.2963	0.9153
30	14.1965	0.7031	0.9875	0.5227	5.7221	0.9991	9.1354	2.0422	0.9360	51.6949	0.1252	0.5965	0.9992
35	13.1130	1.5313	0.9801	0.4446	7.6222	0.9677	9.6025	2.9773	0.9125	16.70934	0.8786	0.7696	0.9677
40	11.6023	8.7149	0.9721	0.1413	9.4353	0.9199	8.8507	12.1932	0.7702	151.0619	0.0699	0.1783	0.9006
50	11.3469	36.8745	0.9940	0.0741	10.7578	0.8544	10.2382	16.4501	0.7087	320.9413	0.0351	0.0818	0.8492