Removal of arsenate using graphene oxide-iron modified clinoptilolite-based composites: adsorption kinetic and column study

Journal of Analytical Science and Technology

Table 2 The parameters of pseudo first order and second order kinetic model for arsenate adsorption on GOFeZA and GOFeZB

C₀ (μg/L)	q_e (exp) (μg/g)	Pseudo first order kinetic model			Pseudo second order kinetic model
C₀ (μg/L)	q_e (exp) (μg/g)	K₁ (1/min)	q_e (cal) (μg/g)	R²	K₂ (g/μg min)	q_e (cal) (μg/g)	R²
GOFeZA
50	60.458	0.0263	5.171	0.8011	0.0206	59.524	0.9999
250	310.106	0.0421	25.045	0.9910	0.0038	312.500	0.9999
450	557.856	0.0291	37.446	0.9430	0.0025	555.556	0.9999
GOFeZB
50	59.854	0.0308	27.568	0.9783	0.0022	61.728	0.9999
250	306.128	0.0410	21.612	0.9874	0.0042	303.030	0.9999
450	554.641	0.0316	31.681	0.9804	0.0025	555.556	0.9999