Synthesis of Iron Doped Zeolite Imidazolate Framework-8 and Its Remazol Deep Black RGB Dye Adsorption Ability

Table 6

Activation energy, equilibrium and rate constants for RDB dye adsorption, and rate constants for forward and reverse process of RDB adsorption onto ZIF-8 and Fe-ZIF-8.

Absorbent	Temp.; (K)		(mg·g^−1)	(×10^3); (min^−1)	k2; (×10^3); (min^−1)	(×10^3); (min^−1)		(kJ·mol^−1)
ZIF-8	298	1.272	28.89	0.890	1.800	2.700	0.990	48.270	0.991
	308	1.570	43.94	1.914	2.692	4.606	0.988
	318	1.842	53.02	3.908	5.304	9.212	0.973
Fe-ZIF-8	298	3.401	62.92	11.361	7.063	18.424	0.988	12.507	0.972
	308	4.079	77.50	12.851	7.876	20.727	0.994
	318	5.864	87.64	17.761	7.572	25.333	0.991