Table 2.

Removal efficiency of selected pharmaceuticals and their metabolites using ferrate-based tablets.

Sample	Hospital wastewater
Compound/tablet	Initial concentration (ng/L)	Removal efficiency (%)
		A	B	F
Carbamazepinea	1550	13–29	91–99	36–39
Cetirizine	250	8–16	73–91	26–41
Dihydro CBZ	140	13–31	88–98	35–37
Epoxy CBZ	1530	9–27	17–30	0
Metoprolol acid	1000	0	43–50	32–39
Mirtazapine	320	53–62	>99	77–86
O-desmethylvenlafaxine	530	0	>96	>98
Oxcarbamazepine	940	0	>97	>89
Trazodone	120	41–47	>98	>98
Venlafaxine	450	7–22	22–26	67–69

^aCBZ - carbamazepine.