Parameters of the Langmuir and Freundlich models of uranium adsorption by GPNB-BT at different temperatures.

Type	T (K)	Langmuir constant			Freundlich constant
		K L (L mg−1)	q m (mg g−1)	R 2	n	K F(mg g−1), (L mg−1)1/n	R 2
Linear model	288.15	0.105	231.482	0.999	6.375	98.998	0.901
	298.15	0.106	238.663	0.972	5.970	97.417	0.937
	308.15	0.121	242.719	0.971	6.077	101.849	0.975
	318.15	0.149	250.001	0.995	6.798	115.639	0.920
	328.15	0.120	261.780	0.999	6.025	108.923	0.899
Non-linear model	288.15	0.105	231.461	0.999	6.864	104.233	0.889
	298.15	0.102	240.019	0.949	6.252	100.862	0.931
	308.15	0.113	244.908	0.950	6.292	104.492	0.971
	318.15	0.146	250.853	0.990	7.260	120.614	0.913
	328.15	0.119	262.108	0.997	6.558	115.738	0.888