Adsorption Equilibrium and Kinetics of the Removal of Ammoniacal Nitrogen by Zeolite X/Activated Carbon Composite Synthesized from Elutrilithe

Table 1

Isotherm parameters of ammoniacal nitrogen adsorption on X/AC at different temperatures.

Isotherm; model	Isotherm constants	Ammonium
		30°C	35°C	40°C
Langmuir	(mg/g)	35.04	35.50	35.91
	(L/mg)	0.013	0.018	0.026
		0.9221	0.9571	0.9512
	RMSE	1.76	1.96	2.29
Freundlich	((mg/g) (L/mg)^1/n)	3.23	3.56	4.69
		0.38	0.37	0.34
		0.9936	0.9805	0.9681
	RMSE	0.17	1.11	1.34
R-P	(L/g)		1.83
	(L/mg)^β		0.28
	β	0.62	0.73	0.67
		0.9936	0.9867	0.9681
	RMSE	0.19	0.91	1.64