. 2023 Sep 21;9(10):e20253. doi: 10.1016/j.heliyon.2023.e20253

Table 6.

Pseudo-first-order and pseudo-second-order kinetics results of NaP and LTA zeolites for 100 and 150 mg/L metal solutions.

Zeolite	Model	Parameters	100 mg/L				150 mg/L
Zeolite	Model	Parameters	Cu	Zn	Cd	Pb	Cu	Zn	Cd	Pb
NaP		q_exp (mg/g)	30.52	5.94	23.52	37.44	32.76	2.00	23.56	56.02
	PFO	q_m, (mg/g)	26.58	5.07	19.81	37.44	27.51	2.85	18.61	56.02
		k₁ (1/min)	0.144	0.037	0.031	1.363	0.201	0.330	0.076	1.314
		R²	0.925	0.967	0.943	1	0.923	0.523	0.885	1
	PSO	q_m, (mg/g)	28.01	5.60	21.99	37.08	28.77	2.80	20.08	56.79
		k₂ (g/[mg·min])	0.008	0.009	0.002	7.186	0.011	5.621	0.005	2.398
		R²	0.978	0.975	0.985	1	0.967	0.492	0.953	1
LTA		q_e (mg/g)	37.58	33.96	36.79	37.07	50.25	18.52	41.30	56.01
	PFO	q_m, (mg/g)	36.93	30.60	35.62	37.08	46.09	17.42	38.00	55.99
		k₁ (1/min)	0.422	0.167	0.318	1.594	0.273	0.329	0.272	1.363
		R²	0.996	0.945	0.990	1	0.957	0.953	0.961	1
	PSO	q_m (mg/g)	37.42	32.08	36.29	37.08	47.60	17.84	39.21	56.00
		k₂ (g/[mg·min])	0.037	0.008	0.021	13.49	0.011	0.042	0.008	2.576
		R²	0.999	0.988	0.999	1	0.986	0.971	0.988	1