Table 3.

Hysteresis index (HI) corresponding to the desorption of MON from the six bio-adsorbents, and for each of the initial concentrations of the antibiotic added.

MON Concentration Added (µmol L−1)	Hysteresis Index (HI)
	Alfa Fiber	Cactus Fiber	Palm Fiber	Acacia Bark	Eucalyptus Bark	Zean Oak Bark
5	0.852	0.977	0.982	0.904	0.869	1
10	0.907	0.956	0.961	0.914	0.895	1
20	0.935	0.855	0.918	0.921	0.903	0.996
40	0.973	0.390	0.748	0.932	0.914	0.943
80	0.979	−0.221	−0.248	0.938	0.919	0.914
100	0.985	−1.546	−1.281	0.957	0.936	0.824
Average values	0.938	0.235	0.429	0.928	0.906	0.946