Performance of a New Magnetic Chitosan Nanoparticle to Remove Arsenic and Its Separation from Water

Table 3

Kinetics parameters for As(V) and As(III) adsorption on the MCNP and MICB with various initial arsenic concentrations.

Arsenic species	Initial concentration (mg/L)	Adsorbent category	First-order kinetics			Second-order kinetics
			(1/min)			(1/min)
As(V)	2.02	MICB	0.00447	0.09829	0.923	0.0184	2.03	0.999
		MCNP	0.66894	2.0381	0.999	1.47387	2.05	0.988
	5.28	MICB	5.37 × 10^−3	2.762	0.786	6.985 × 10^−3	5.229	0.999
		MCNP	0.80321	5.07219	0.999	1.35289	5.09	0.989
	10.73	MICB	5.82 × 10^−3	3.549	0.648	5.80 × 10^−3	10.619	0.999
		MCNP	1.03997	10.1352	0.999	0.83557	10.21	0.98
As(III)	2.01	MICB	0.00937	0.6384	0.886	0.0152	2.03	0.999
		MCNP	0.67013	2.00007	0.999	2.0559	2.002	0.96
	5.19	MICB	0.00898	3.9759	0.927	6.659 × 10^−3	5.089	0.999
		MCNP	0.80656	4.99143	0.999	1.10786	5.01	0.985
	10.58	MICB	0.00963	7.9044	0.960	3.07 × 10^−3	9.859	0.999
		MCNP	1.19382	9.68389	0.999	1.00456	9.724	0.982

Note: the data of MICB is taken from the study of Wang et al. [19].