Parameters of the process of tetracycline adsorption by Zr/Fe-MOFs.

Concentration	Pseudo-first order		Pseudo-second order
	K	R 2	K	R 2
60 mg L−1	0.004950	0.9927	−0.01252	0.9920
50 mg L−1	0.003150	0.9946	0.01112	0.9543
40 mg L−1	0.002850	0.9817	0.01108	0.9179
30 mg L−1	0.002480	0.9922	0.01695	0.9678
20 mg L−1	0.001800	0.9974	0.02458	0.9962